- CRUX Academy 9, crux, CRUX Academy, crux, Array, The CRUX Academy ensures a structured dissemination of knowledge and training within the company. In addition, the Academy encourages and inspires our employees to utilize their fulll potential. Professionalism, quality and job satisfaction are the basis. Expertise in various fields is shared among employees in a unique way. An extensive in-house course programme guarantees effective and inspiring knowledge building. The experienced specialists and MT members of CRUX are the teachers in the CRUX Academy. As an employer CRUX invests time and shares knowledge in a structured way at all levels to give special attention to the individual development of the employees. Besides substantive training and knowledge building through internal courses, mentoring and coaching play an important role in the CRUX Academy. With this we want to stimulate the development from engineer to consultant. Do you want to start in the fascinating field of geotechnical engineering or have you been working in the field for a number of years and are you looking for a new challenge? …. Or do you feel that there is more to the profession than what you are doing now? Then take a look at what the CRUX Academy can do for you to become a consultant who can (continue to) develop on various fronts with a lot of job satisfaction. Through knowledge you get more self-confidence and experience job satisfaction. You are never done learning! , crux-academy
- Our history 5, crux, Our history, crux, Array, CRUX has a young and dynamic history. Within almost 20 years of our founding, we have grown to become the leading independent geotechnical consultancy agency in the Netherlands. 2002 Almer van der Stoel and Holger Netzel both devoted their doctoral research to topics related to the North/South line in Amsterdam. Based on this basis, they founded CRUX Engineering BV in 2002, to be able to realize their shared ideas about the geotechnical profession in daily practice. The company had a brilliant and versatile start; the first projects concerned, for example, geotechnical advice for the construction of the New Rijksmuseum, a piled embankment structure for a train track in the Far East and various works for Waternet, the water company for Amsterdam and its environs. In the first years, Almer and Holger continued to work on realizing their mission: to provide high-quality and technically sound geotechnical and geo-structural design and implementation solutions across the breadth of the field, whereby risk management of settlement impact is always the starting point. ### 2005 Jacco Haasnoot became involved as the third partner. ### 2008 The company grew, and adding Delft as a second location was a logical step. In 2008, CRUX Engineering opened its doors here, and Jacco Haasnoot began leading this location. It marked a new phase in the development of the company. CRUX would later be approached by the project organization of the North/South line for the role of ‘trouble-shooter’ and auditor. Risk management and ground improvement through ground freezing form an important part of the dossier. By this time, the company is an experienced party in the design of construction pits and piled embankment structures. In collaboration with Waternet, a Building Protocol was set up for the risk management of its work in the city centre of Amsterdam. The CRUX approach to settlement risk assessment therefore also has a policy character and has formed the basis for the expansion of our company in the following years. ### 2010 During the Dutch crisis years, we expressly became a partner for contractors on civil engineering projects with regard to the design and management of geotechnical risks. The branch on Asterweg in Amsterdam Noord welcomed new colleagues and found itself bursting at the seams. In 2010, we moved to our current office in Amsterdam IJburg. It is a new, sustainable and comfortable building, with many neighbours from the construction industry, and it is a nice place to work. The set-up and ICT facilities suit a modern consultancy firm. In 2010, we opened our branch in the south of the country, in Eindhoven. Bas Snijders is the branch manager here. ### 2013 In January 2013, Bas Snijders and Auke Balder became partners. Because CRUX calculates and consults about everything having to do with, on and in the ground, setting up an environmental department in 2013 was a logical step. This department is involved in consulting and managing working with contaminated ground, an almost daily phenomenon for construction work in urban areas. Today, they are an integral part of our business operations, with Arnold Bleumink as the first point of contact. The earthquake problem in the north of the Netherlands has been one of the spearheads of our company since 2013. ### 2015 In January 2015, Johan Zwaan joined as a partner, and our colleagues in Delft relocated to the Delftechpark, a commercial park for innovative, knowledge-intensive companies. ### 2016 In July 2016, Guido Meinhardt became involved as the seventh partner. Maarten van Baars became branch manager in Delft. ### 2017 As of 1 July 2017, CRUX Holding BV, the parent company of CRUX Engineering, acquired a majority interest in BouwRisk, with the aim of achieving further growth in size and quality and of combining the expertise of the two subsidiaries. This should lead to an even more integrated approach, in particular with respect to settlement risk assessment of construction pits and (line) infrastructure, among other things. In November 2017, the Delft location relocated to a new and larger office at Mijnbouwstraat 112 in Delft. With the arrival of the highly experienced Gerhard Winters, CRUX has also had in-house hydrogeology since the end of 2017 to advise on pumping operations (including barrier function and permit applications), urban groundwater, water-related installations and contamination. We are very proud of the past years, during which we have laid a solid foundation under our company. As an independent geotechnical consultancy firm, CRUX is currently involved in virtually all the (more complex) geotechnical projects and issues in the Netherlands, as a designer or as an expert. As a specialist, foreign firms now turn to us as well. We have been nominated with both our company and with high-profile projects for various coveted prizes, such as the Schreuders prize, the Beton prize, the Keverling Buisman prize and the Entrepreneur Awards of the city of Amsterdam and the Provence of Noord Holland. The CRUX team currently has more than forty consultants and specialists, reaching a size that perfectly suits a specialized and decisive consultancy agency with sufficient critical mass. After the addition of Arjan Wisse, Bas Snijders, Auke Balder, Johan Zwaan and Guido Meinhardt, our management team now consists of eight partners, each with their own knowledge, skills and competencies. Together with the many talented and committed colleagues, the partners form a solid basis for now and the future. CRUX continues to focus on the future and follows intriguing technical and social developments within its field. The substrate plays an increasingly important role in more sustainable building. Earthquake-resistant building and strengthening foundations and flood protection have our attention, as well as geo-risk management. There are plenty of challenges in the coming years. We at CRUX are just as enthusiastic and engaged as when we started in 2002 with just our knowledge and three computers. CRUX is the honest construction partner where knowledge, transparency in the relationship, safety and sustainability are central. Together, we get to the heart of the matter! , our-history
- Partnership 7, crux, Partnership, crux, Array, Interested in a possible collaboration with us? Contact us to discuss a project and/or make an appointment via info@cruxbv.nl., partnership
- Great Place to Work 10, crux, Great Place to Work, crux, Array, Vaak hoor je in de wandelgangen van CRUX dat het zo leuk is om bij CRUX te werken en dat CRUX innovatief is, veel opleidingsmogelijkheden biedt, aan mooie projecten werkt et cetera. Ruim 15 jaar na de oprichting van CRUX vonden we het tijd om grondig in kaart te brengen waarom we deze goede reputatie hebben en wat we kunnen doen om dit te behouden. In 2019 heeft CRUX het certificeringstraject van Great Place to Work Nederland succesvol doorlopen en afgesloten. Great Place to Work® is de internationale partner voor organisaties in het traject van onderzoek, ontwikkeling en erkenning van goed werkgeverschap. Het vergroten van de mate van vertrouwen, trots en plezier binnen organisaties zijn de factoren die bijdragen aan blijvend organisatiesucces. Het onderzoek bestaat uit de Trust Index en Culture Audit. Resultaat Trust index De Trust Index (medewerkersonderzoek) is een vaste set vragen die universele waarden meet waarvan uit onderzoek is gebleken dat dit de factoren zijn die een organisatie succesvol maken. CRUX heeft de Trust Index gecombineerd met een werkgeversonderzoek (Culture Audit). Op die manier hebben we inzicht gekregen of dat wat wij als werkgever doen, ook het gewenste effect heeft op onze medewerkers. In deze afbeelding (nb: dit is slechts één beeld uit een uitgebreide feedback die we hebben gekregen) zie je hoe hoog de antwoorden scoren op de ‘big five’ van Great Place to Work NL: Resultaat Culture Audit “We zijn in positieve zin verrast door de eerste Culture Audit die CRUX heeft aangeleverd! De website die is gebouwd, is meteen een mooie afspiegeling van de manier waarop CRUX kwalitatief hoogstaand werk levert. Het eveneens hoog hebben zitten van kwaliteit als het gaat om het bieden van een goede werkomgeving voor medewerkers, wordt gedurende het lezen helder. Met name op het gebied van Ontwikkelen laten jullie mooie initiatieven en programma’s zien. Wat daarnaast opvalt is dat er duidelijk veel aandacht wordt besteed aan het creëren van ruimte voor de ideeën en suggesties vanuit medewerkers. Dit is iets waar veel organisaties grote moeite mee ervaren en daarom des te meer iets om trots op te zijn.” Goed werkgeverschap is voor iedereen van groot belang, op basis van de resultaten mogen we officieel hardop zeggen: CRUX is een Great Place to Work! Een primeur voor technische advies- en ingenieursbureaus in de bouw. Meer info over het Great Place to Work principe, klik [hier](https://www.greatplacetowork.nl/word-een-great-place-to-work#ons-proces). Top 10 Best Workplaces Op basis van deze erkenning komt CRUX ook in aanmerking voor een plek in de Top 10 Best Workplaces in de categorie Small Workplaces (organisaties met 20 t/m 49 medewerkers). De Best Workplaces worden eind maart 2020 bekendgemaakt tijdens het Best Workplaces event. Cobouw Awards Beste Werkgever 2019 Naast het behalen van de certificering is CRUX in 2019 doorgedrongen tot de laatste drie bedrijven die in aanmerking komen voor de Cobouw Award Beste Werkgever. [Nieuwsbericht website](nl/artikel/crux-genomineerd-voor-cobouw-award-beste-werkgever-2019) [Cobouw artikel PDF](https://cruxbv.nl/contents/uploads/nieuws/44_11.interview-almer-cobouw.pdf) , great-place-to-work
- Quality & safety 3, crux, Quality & safety, crux, Array, As the mission statement of CRUX indicates, we want to make a positive contribution to society by carrying out qualitatively and technically sound geotechnical, geohydrological, environmental and geo-structural design and implementation solutions. Quality is the starting point in our operations and services. We want to be an honest construction partner, where knowledge, transparency, safety and sustainability are central. The work is performed according to our quality management system in accordance with **ISO 9001:2015 **. We meet additional specific quality requirements for work where it applies. CRUX Engineering has the following certificate for this purpose: BRL SIKB 6000-protocol 6001: Assessment guidelines for environmental supervision of land remediation with conventional methods and aftercare. CRUX works in the field of constructional recordings and monitoring, (water)soil and pavement research, lot inspections and probing with fixed, competent and certified partners. In the unlikely event that a client notices that CRUX does not meet the requirements of the standards as mentioned above, the client should immediately report this to the management of CRUX. In such cases the management of CRUX will act according to an established complaints procedure. , quality-safety
- Research and development 8, crux, Research and development, crux, Array, Innovation Research and development are important spearheads at CRUX. In various collaborations with contractors and market parties we are continuously working on innovation. Research is being conducted in the area of innovative ground improvement techniques, the development of new pile systems and the use of alternative (geotechnical) building materials. Promotion & international Five of our colleagues have performed PhD research , a.o., at Delft University of Technology, for instance on Building Response due to Ground Movements and Grouting for Pile Foundation Improvement. CRUX consultants also actively participate in national and international research committees, for instance in the area of underground construction, ground improvement techniques and risk management. CRUX is also closely involved in committees of SBRCURNet, COB, PLAXIS, Geo-Impuls and the ISSMGE. Knowledge At CRUX, ample attention is paid to maintaining the level of knowledge within the company, for example by participating in courses, symposiums, internal knowledge transfer sessions (KOS) and an intranet. The dissemination of the acquired knowledge is done by regularly writing for (professional) publications and giving lectures and (guest) lectures. Design tools and CRUXRisk CRUX is alert to and engaged in developments in the field of geotechnical design tools. Of course, CRUX has state-of-the-art geotechnical calculation software, such as D-series from Deltares Systems, PLAXIS 2D and 3D and Geostudio software. In addition, the consultants and programmers from CRUX develop automated calculation software in-house, such as CRUXRisk (for complex settlement risk analyses) and probabilistic calculation models in combination with Plaxis for the safety of dikes , research-and-development
- Mission, vision and core values 2, crux, Mission, vision and core values, crux, Array, Mission We want to make a positive contribution to society from our field of expertise. We do this by producing high-quality and technically sound geotechnical, geohydrological, environmental and geo-structural design and execution solutions. This applies in particular for construction in infrastructure, water construction, non-residential construction and the energy sector. Risk management and care for the environment, both inside and outside urban areas, is always a critical factor for us. Where possible, we want to contribute to the further development of our field, and we share knowledge and skills both nationally and internationally. Vision In our vision, quality is the starting point for our operations and services. We want to be an honest construction partner where knowledge, transparency, safety and sustainability are central. In collaboration with our customers and other stakeholders, we want to realize projects at a market-conforming price with an environmental impact that is acceptable to all concerned. Training, development and job satisfaction of our employees form the basis of the continuity of our company. Core values We possess a unique combination of geotechnical, geohydrological, environmental, soil improvement techniques and soil energy knowledge. We combine creativity with expertise, decisiveness and speed. Our slogan and our logo refer to our company name; we get to ‘the heart of the matter’. , mission-vision-and-core-values
- CRUX – Social involvement 4, crux, CRUX – Social involvement , crux, Array, CRUX wants to make a positive contribution to society from its field. This has to do with the quality and sustainability of the built environment with respect for human and natural norms and values. We believe sustainability is important, in our consultancy work and our operations. CRUX contributes to making small to (very) large projects technically, financially and socially feasible. In addition, we always strive for an acceptable environmental impact to all concerned. ### Social responsibility themes By participating in projects, research and innovation, CRUX offers added value to social issues such as earthquake problems, flood protection and energy storage as well as the preservation of cultural heritage (such as the Unesco canal belt of Amsterdam, the Mesdag’s panorama, The New Rijksmuseum, the Stedelijk and Van Gogh Museum, the Mauritshuis, De Waag Amsterdam and Our Lord in the Attic Museum). ### Donations CRUX also feels connected to a number of projects and initiatives with a social character outside our field. CRUX annually supports a number of initiatives with which we feel connected. Sometimes there is overlap with the scope of our work, but mostly because we just find it important to contribute to these initiatives. CRUX donates, among other things, to research into medicines and treatments for diseases, such as children with Duchenne, fighting cancer through RoPaRun and Alp d’Huzes and combatting ALS via Amsterdam City Swim. ### Sharing knowledge and skills CRUX wants to contribute socially to the further development of our field, which is why we share knowledge and skills both nationally and internationally. We do this by participating in committees, writing publications, papers, (guest) lecturing at educational institutions and giving presentations and workshops. We offer graduate facilities and practical internships for students from colleges and universities. ### Sustainability CRUX strives for structural management and restriction of our settlement risk and uses the CO2 performance ladder to map and reduce our CO2 emission. Within our environmental policy, we strive, for example, to limit the energy consumption in our offices, to use sustainable energy and to limit paper use. , crux-social-involvement
- About CRUX 1, crux, About CRUX, crux, Array, Advice & solutions CRUX is an independent geotechnical consulting agency and provides high-quality advice in the field of geotechnical engineering, geohydrology, environmental and settlement risk assessment. By bundling these consultancy services with our expertise in monitoring, environmental research and improvement techniques, we are truly capable of offering complete and, where necessary, innovative geotechnical design solutions. CRUX is also leading in the field of performing analyses of settlement risk. For example, a quantitative risk analysis of expected displacements, vibrations and groundwater level changes at the site of the adjacent structures can be done prior to the work. But we can also investigate the causality of (construction) damage that has already occurred. Designer & expert domestically and abroad Due to our strong drive for knowledge and innovation, our company has grown rapidly since its founding in 2002 and is currently involved in almost all the (more complex) geotechnical projects and issues in the Netherlands, as a designer or as an expert. Foreign clients also increasingly use CRUX for support. CRUX is also engaged as an independent specialist to provide second opinions or to assist in liability issues for insurers, arbitration and lawsuits (DIX). Critical specialist With over forty consultants and specialists, our team has now reached a size that perfectly suits a specialized and decisive consultancy agency with sufficient critical mass. Our management team consists of seven partners, each with their own knowledge, skills and competencies. The partners form a solid foundation for today and the future, in collaboration with the many talented and committed colleagues. By linking creativity with expertise, we get to the heart of the matter decisively and quickly! , about-crux
- Geotechnical Engineering 8, werkvelden, Geotechnical Engineering, discipline, Array, **Soil investigation Foundations and ground structures Construction pits Bored tunnels and trenchless tech. State-of-the-art dike verification Low subsidence or sub. free systems Dynamics and earthquakes** , Geotechnical engineering is the collective name for ground mechanics and foundation technology and, according to the Van Dale dictionary, “the applied science that deals with the study of the behaviour of ground and rock for the design and realization of earthworks and art works.” Within the field of geotechnical engineering, CRUX investigates the properties of the ground, the behaviour of the ground and which structures are suitable for placing on or in the ground. In the design of (ground) structures, the subsidence and stability of the ground is investigated, and for the determination of the bearing capacity, much attention is paid to the type and dimensions of the foundation. The properties of the ground are determined in advance through field and laboratory research. These geotechnical recommendations are used by CRUX for the construction of bridges, tunnels, locks, aqueducts, viaducts, high-rise buildings, utility structures, local, provincial and highway roads, dikes, windmills, off-shore structures, quay walls, et cetera. ### Soil investigations No two clays are the same. Without a solid understanding of the ground structure, no high-quality design is possible. Each project starts with identifying, characterizing and schematizing the substrate. A combination of geological and technical knowledge makes it possible to provide a good estimate of the risks of the substrate, domestically and abroad. CRUX has ample engineering geological expertise. Efficiently setting up, managing and interpreting soil investigations is therefore part of our expertise at CRUX. CRUX conducts soil investigation in collaboration with specialized and experienced partner companies. ### (Reinforced) Ground structures The ground deforms. This happens in particular during construction preparation or construction of a dike or road, when ground is added or removed. In the typically weak Dutch soils, the subsidence and stability of the ground structure are determining factors for the design. By using the most up-to-date calculation and execution methods, CRUX recommends the most economical and optimal design for a project. ### All types of foundations No construction without a good foundation. CRUX has extensive experience with both shallow foundations and pile foundations. In determining the right type of pile foundation, not only is the bearing capacity considered, but the type of pile foundation is also attuned to the local ground conditions. Foundation consulting is provided by us for, among other things: bridges, viaducts, tunnels, high-rise buildings, non-residential and residential construction. The design of a foundation substitution by means of grouting and foundation repair is also part of the specific field of expertise of CRUX (see the field of ‘ground improvement’). ### Construction pits Space is becoming increasingly scarce. That is why, especially in urban areas, more and more functions are being brought underground (storage, infrastructure, parking garages, et cetera). This requires construction pits to be near, next to or even under existing buildings and/or infrastructure. CRUX is able to handle the complete design of such construction pits. Our added value lies in our expertise and experience in the area of settlement risk assessment and damage prevention. ### Drilling tunnels and trenchless techniques The drilling and pressing of tunnels is increasingly being used in the Netherlands. This technique has been on the rise since the end of the last century. CRUX consultants have been involved since the introduction of these new techniques in the execution of projects and in the development of expertise in the area of underground construction. ### State-of-the-art dike testing CRUX is one of the first consultancy firms in the Netherlands to use state-of-the-art CSSM and SHANSEP (POV-M) for the study and design of dikes. In addition, CRUX offers comprehensive support for the design process, the execution of the environmental studies and the inventory of the risk of damage and for limiting this as well as possible. More information on this subject can be found in our ‘State-of-the-art dikes’ special. ### Low-subsidence or subsidence-free systems More information on this subject can be found in our ‘Piled embankments’ special. ### Dynamics and earthquakes With the recognition of the earthquake problem in the north of Groningen and the subsequent technical question concerning structural reinforcement, CRUX has developed in recent years into one of the experts in the field of induced earthquakes and the geotechnical risks involved. More information on this subject can be found in our ‘Earthquakes’ special. , geotechnical-engineering
- Subsurface Energy (ATES) 9, werkvelden, Subsurface Energy (ATES), discipline, Array, **Energy sheet pile CSM-wall ATES (BRL 11000)** , Since 2018 CRUX has been active in the world of heat and cold storage systems. Through consultancy in soil energy CRUX contributes to the energy transition. Soil energy uses the available energy or energy storage in the soil to heat or cool houses, offices and greenhouses. Soil energy is mainly of two types: closed soil energy systems and open energy systems, both focusing on thermal energy. Advising on the environmental effects that occur through the interaction between underground construction activities and existing ATES systems was the direct reason for including ATES in our range of services. ATES systems must operate stably for many years, whereas in densely built-up urban areas there are continual changes in the deep subsurface caused by large-scale construction projects. The joint design of building foundations and ATES is then a logical step. Our hydrogeologists create hydrogeological models to analyse the influence of UTES on the environment. CRUX also studies the influence of the environment in the form of deep pile systems, gel injections and deep walls on the ATES systems. In addition, the hydrochemistry of the groundwater is calculated and analysed by us to determine the effects on well clogging and lifespan. ### Energy sheet pile [Read all about the Energy Sheet pile here.](https://cruxbv.nl/en/special/energy-sheet-pile) ### CSM Energy wall Besides being busy with the development and research of the Energy sheet pile, CRUX Engineering has set its sights on a new concept in collaboration with [BodemBouw](https://www.bodembouw.com/nl/cutter-soil-mixing). In January CRUX and Bodembouw received an MIT R&D funding for research into the thermal activation of a CSM wall. This is a funding for R&D cooperation projects of the SME-Innovation Stimulation Region and Top Sectors. CSM stands for “Cutter Soil Mix”. In this process, the soil is mixed in vertical strips to the desired depth to form a homogenous mixture, after which it becomes a solid wall by injecting a cement mix. This results in a water and soil retaining construction that can be used for both foundations and flood defences. By placing loops in the still liquid mix, the CSM wall is thermally activated and heat can therefore be extracted and stored directly under the building. The first pilot project that CRUX will finance with the MIT R&D grant has already started: at this moment, the CSM Energy Walls are being designed at several project sites in the Netherlands. The CSM Energy Wall will have a ground retaining function for the basement and will also serve as a foundation for the house. As an additional function, the wall will also function as a closed ground energy system for the extraction and storage of heat. Source figure: Bodembouw ### ATES (BRL 11000) CRUX has been active in consulting in CHP systems since 2018. With a recent BRL11000 certification, CRUX contributes to the energy transition while meeting the applicable quality standards. The immediate reason for including ATES in our consultancy services is the interface between underground construction activities, existing and future ATES systems, which are regularly overlooked. Lasting stable groundwater conditions are becoming increasingly rare. In densely built urban areas, conditions in the deep subsurface change regularly, due to large-scale construction projects with deep drainage and return drainage or area developments. The joint design of construction activities, area developments and CHP is therefore a logical and necessary step for a reliable understanding of the life expectancy for systems and threats to energy yields. CRUX focuses on analyses of the soil part of ATES systems, with specific (numerical) determination of the energetic yield, environmental effects and interference with adjacent user functions such as drainage, ATES systems, soil injections. To this end, our geohydrologists use advanced modelling for heat transport, hydrochemistry and interference. In addition, CRUX also designs the underground part of CHP systems. This can be used as input for a designing party drafting DO or writing specifications. Long-term strategic calculations of the effects of future drainage and new WKO systems near existing ones are also possible. Such calculations are then the underpinning for targeted monitoring programmes that track the hydrochemical composition of groundwater to quantify well plugging. In disputes over potentially adverse effects of third-party activities, this is a valuable source of information. [See also our publication in the Water Special of the magazine Civiele Techniek (nr. 1 2023) – In Dutch only -.](https://cruxbv.nl/contents/uploads/werkvelden/9_16.ct2023-nummer-12-van-beregeningsbron-naar-open-bodemenergies.pdf) , subsurface-energy-ates
- Hydrogeology
4, werkvelden, Hydrogeology , discipline, Array, **Dewatering and pumping tests Groundwater statistics and climate Infrastructure constructions Sustainability and construction Risk Assessments and monitoring Aquifer Thermal Energy Storage (ATES) Geochemistry** , Hydrogeology is the summary term for all groundwater issues. Everywhere in the subsurface we encounter groundwater at some depth. This leads, for example, to a variety of consulting questions when work has to be done below the groundwater table. The groundwater level may be too high to build dry. Or there may be risks to the surroundings, such as subsidence, attracting groundwater pollution by pumping groundwater or damage to nature. But also questions about flooding, drought as a result of climate change, energy storage in groundwater, (hydro)chemistry and remediation of groundwater pollution are part of the discipline of hydrogeology. In the field of hydrogeology CRUX bases its advices on high quality knowledge and translates the knowledge into practice based on extensive experience. CRUX has knowledge of model codes, theoretical background of both the hydrological and mathematical side of hydrogeology and also develops new knowledge and numerical methods. ### Dewatering and pumping tests For the realization of a cofferdam below ground water level, a temporary lowering of the ground water level is needed. Examples can be found in simple drainage of small structures to very complex issues, from basements in inner cities to large-scale infrastructure projects. CRUX provides advice for the entire permit process for the Water Act in the form of drainage advice, environmental impact assessments, guidance and interpretation of pumping tests and support for the permit application at the Water Board, Water Board and Directorate-General of Public Works and Water Management. Here CRUX takes into account the wishes of the contractors, developers and the licensing authorities. CRUX is aware of the latest legislation and regulations in this area and maintains good contacts with the competent authorities. CRUX can also take care of supervision of the implementation of drainage and interpretation of the monitoring of drainage and environmental effects. For smaller excavation pits CRUX draws up practical brief drainage recommendations. ### Groundwater statistics and climate (drought & wetness) Statistics of groundwater levels are essential for geotechnical and geohydrological analyses and designs. Groundwater level statistics are practised with time series analyses of monitoring well measurements and spatial analyses. Here, CRUX can determine all necessary statistical key figures such as GHG, GLG, GG and recurrence times. When determining the groundwater statistics, not only the data and the theoretical arithmetic approach are considered, but also the multi-year trend in the measurement series and the practical application of the normative groundwater statistics in requirements analyses and standard determinations. CRUX regularly performs this work in (large) projects in the fields of housing and infrastructure, from tender to construction phase. Besides applying statistical analysis to groundwater levels measured in the past, statistics can also be applied to expected groundwater levels in the future. As a result of climate change, groundwater levels may fluctuate more than in the past. This results in periods of both desiccation (groundwater level too low) and rewetting (groundwater level too high). Statistical analysis answers questions such as: how much higher or lower is groundwater in the future and how often does this occur? Is desiccation to be expected in places where it is undesirable (natural areas)? Is dehydration to be expected in places where this is undesirable (residential areas)? In the case of groundwater damage: what part of the damage is due to climate and what part is due to project work (drainage)? ### Infrastructure constructions Large infrastructure projects often have a strong hydrogeological impact. This is accompanied by a wide range and diversity of hydrogeological issues. Examples are construction of new road networks, tunnels, rail and metro systems, maintenance of canals and rivers, construction of locks and realization of quay walls. The hydrogeologists of CRUX are involved in large infrastructural projects. For such projects advices are written on technical level with groundwater statistics, groundwater system analysis, drainage advices, barrier effect, drainage analyses and monitoring. In addition, CRUX consultants are involved in aspects outside the construction pit such as environmental influence and risks, supervision of permit procedures, requirements analysis and optimization of activities and risks. Because CRUX is very experienced in the field of geotechnical engineering and foundation consultancy the connection between the two disciplines is great. Because groundwater (levels) and geotechnical means such as sheet piling influence each other this connection is of great added value. Examples where this is strongly expressed is in the analysis towards chances on settlement damage versus damage cases and the development of quay walls. The scale of infrastructure projects often creates challenges and aspects that are not addressed in smaller dewatering projects. ### Sustainability and construction Almost all governments stipulate as a precondition in designs that they must be built in a groundwater neutral way. The exact definition differs from place to place, but from a hydrogeological point of view it is a recurring issue with elements such as water balance, rewetting and dehydration, barrier effect and heat stress. In case of a large groundwater gradient, a barrier (basement) can even lead to settlement damage. CRUX uses knowledge of groundwater statistics, water system analyses and groundwater models to test designs for groundwater neutrality in accordance with the applicable rules. ### Risk Assessments and monitoring Influencing the environment is actually caused by any change in the (ground) water system. Major environmental impacts are caused by, for example, drainage, alterations to quay walls, rivers and canals, and climate change (desiccation and water table change). Examples of environmental effects are ground level settlements at adjacent properties, monuments, archaeology or railroad tracks, displacement of groundwater contaminants, influence of soil energy systems and displacement of the freshwater-saltwater interface. The environmental impact can be calculated beforehand by means of a hydrogeological analysis in the drainage advice and environmental impact report. In the determination of environmental effects the effects are assessed by CRUX. The assessment of effects is done by means of hard requirements and in some cases based on relatively flexible norms. Some norm violations are easy to measure while others only occur over time or in a specific season. Across this spectrum, CRUX is able to use models and statistical analysis to propose mitigation measures and monitoring strategies. In this way, the interests of the permitting authority, developer and contractor are represented to develop an effective design and solid implementation without harming the environment. Groundwater monitoring provides insight into environmental influences and is therefore indispensable during activities such as cofferdam drainage, but also for policy aspects such as monitoring of desiccation. On the basis of groundwater monitoring, negative effects are detected at an early stage, thus minimizing the risk of damage. ### Aquifer Thermal Energy Storage (ATES) CRUX employs several specialists with extensive experience in the field of soil energy. Innovations like the energy Sheet Pile were co-developed by CRUX. And in the larger drainage projects that potentially influence thermal storage systems we work with coupled hydraulic and thermal models to quantify the degree of influence. [More information on ATES.](https://cruxbv.nl/en/discipline/soil-energy) ### Geochemistry By definition, chemical processes take place during construction activities in the subsurface. Think of clogging of drainage wells as a result of iron precipitation or calcification, influence of water glass and underwater concrete on groundwater quality, degasification of methane during deep dewatering, erosion of metals and displacement of components of a groundwater contaminant during dewatering. CRUX advises on geochemical aspects that occur during underground construction by means of risk analyses in the design phase, monitoring and interpretation of groundwater composition during (and after) the execution and damage analysis afterwards. In addition, environmental effects such as displacement of groundwater contamination is a social issue with basic hydrogeological aspects and also hydrogeological solutions. Legally, relocation of contamination is not allowed. And if the remediation has already been designed or is already being carried out, then adjacent dewatering is a disturbance. Displacement of groundwater contaminations is considered by CRUX by means of modelling studies in combination with field and laboratory research. Displacements of groundwater contaminants are modelled by MODFLOW and Mt3d/Rt3d or PHREEQc. The Special Geochemistry of Water Glass Injections outlines the issues of concern for drainage in construction pits with water glass injections. See also the [Special Geochemistry of Water Glass Injections](https://cruxbv.nl/en/special/geochemistry-of-water-glass-injections), hydrogeology
- Ground Improvement
5, werkvelden, Ground Improvement , discipline, Array, **Permeation grouting Jet grouting Mixed-in-place Compensation grouting (compaction) Compensation grouting (fracture) Ground freezing** , If the ground does not cooperate, it can be given a helping hand. By injecting or grouting ground, the ground can be stabilized and made more or less impermeable. The freezing of the groundwater with the aid of liquid nitrogen or a saline solution produces the same effect on a temporary basis. In the past, ground improvement techniques were regularly applied as an emergency measure. Due to the better manageability of the process, however, these techniques are increasingly used as a regular method for the design of temporary or permanent structures. Almer van der Stoel wrote his thesis on injection methods (grouting) for the improvement of pile foundations. He and other consultants from CRUX have gained unique experience with various projects in the design of ground improvement techniques. CRUX also provides the course guidance for the PAO course and lectures at the University of Twente and TU Delft in this area and has given several national and international ‘state-of-the-art’ lectures on this subject. CRUX has specialized computer software for ground improvement calculations. CRUX has successfully created the design for the following ground improvement techniques in many projects. ### Permeation Grouting The essence of the ‘Permeation Grouting’ technique rests on the fact that the pores in the ground are filled with an injection fluid, while the grain structure is left intact. If the ground has a coarse structure (gravel), this is easier to do than with fine-grained soils (fine sand). ### Jet grouting Jet Grouting is also known in the surrounding countries as Very High-Pressure grouting (VHP) or Hohe Druck Injektion (HDI). Due to improvements, the scope has been broadened to such an extent that almost all ground types can be treated. The principle of the technique is based on jetting the ground loose under high pressure and mixing this ground with a mixture of water and cement. The ground is also partly replaced, whereby the effluent, the so-called spoil, is pushed to the ground level by the overpressure at the bottom along the injection lance, where it is pumped away. The effect is clearly eroding, so that the grain structure, unlike with permeation grouting, does not remain intact. ### Mixed-in-Place Mechanical mixing of soil, commonly called Mix in Place (MIP), or Soil Mixing for short, is based on the principle of mixing the soil using a mixing tool (paddle) with lime and/or cement. The product of the technique is often referred to as a stabilized soil-column. The properties of a soil massif treated by soil mixing show great similarities with the properties of a soil massif treated by the injection methods, namely improving the permeability and strength properties. ### Compensation grouting (compaction) Compaction Grouting is a term used for those injection methods where the ground is compacted by displacing the ground around the injection point with grout (water, cement and sand). The ground is thus compacted and suspended. The reasons for application may be the undoing of subsidence due to consolidation or compensating for relaxation caused by, for example, the excavation or drilling of a tunnel. ### Compensation grouting (fracture) Fracturing (ground-fracturing grouting), also known as hydrofracture grouting, is a technique that aims to create a fracture surface in the ground by applying a very liquid injection fluid (usually water and cement in 1:1 ratio) under very high pressure. The fundamental difference from permeation grouting lies in the fact that the goal is not to infiltrate the grain skeleton, but to displace (or ‘jack up’) the ground. When the initial horizontal grain tensions are larger than the vertical, the injection liquid forms predominantly horizontal lenses in the ground; if the opposite is the case, the ground is fractured predominantly vertically. This technique of ‘fracturing the ground’ can be usefully applied when subsidence must be compensated. ### Ground freezing The freezing of groundwater is often used to resolve problems with regard to (ground) water during construction. Because freezing does not provide a permanent solution from a cost perspective, the technique is only used to create temporary stabilization or water inhibition. A distinction can be made between freezing with brine (relatively cheap and slow, often for longer project duration) and freezing with nitrogen (relatively expensive and fast, often for shorter project duration). Primarily, a distinction can be made by function for stabilizing injections (increasing strength and stability), sealing injections (reducing water permeability) and compensating injections (compacting or displacing). , ground-improvement
- Second Opinions 2, werkvelden, Second Opinions, discipline, Array, **Review designs and/or plans Liability cases Improved insurance terms CAR insurance or (construction) permits** , In addition to design work, CRUX is also frequently asked to provide second opinions and reviews. This may include, for example, reviewing the design or plan prepared by another consultancy firm or contractor. In addition, parties are regularly assisted by a number of CRUX senior advisers in liability proceedings of insurers, arbitrations and court cases (DIX). For the various construction and housing inspection organizations, transport companies and infrastructural services, the risk analyses and monitoring work as performed are recognized as a good approach to assessing the risks of settlement and groundwater changes. CRUX is also recognized by all insurers as a qualified party for conducting settlement-groundwater-impact risk analyses to obtain the CAR insurance. Having such a risk analysis performed by CRUX may therefore result in improved insurance conditions (premium, deductible), and it reduces the risks for the project developer, particularly with regard to the often-considerable costs of any delay in construction. Finally, a risk analysis may also play an important political role in showing the parties concerned and in particular owners of adjacencies that the developer/contractor has seriously and thoroughly had the risks assessed by an external and independent, highly-qualified party. , second-opinions
- Environmental
3, werkvelden, Environmental , discipline, Array, **Environmental soil and water studies (Re)usability of soil and construction materials Working in contaminated soil Environmental supervising** , An important driver for including Environmental Soil and Water Quality work in our recommendations is that in our experience little influence can be exerted over environmental legislation and regulations, but that the way in which these are integrated into daily practice can indeed be managed. By taking the intended developments as a starting point and adjusting them from there to laws and regulations, there is much to be gained! By applying research and advice in the right way and at the right time, CRUX ensures that unnecessary work and stagnation in the execution soil excavation and-or groundwater pollution/sanitation are prevented. This significantly reduces construction costs and minimizes the risk of delays. CRUX can be of service from the initiation phase through the realization phase of a project, including the following recommendations and research. Advice: Interpretation of existing research data: do the studies performed comply with the relevant legislation and regulations and with the intended purpose of the client? Are research results interpreted correctly and are no unnecessary follow-up steps recommended? Advice on excavation and disposal/reuse of recovered soil. Advice on soil quality-related tender specifications. Preparing remediation plan/BUS notification. Guidance during execution. Advice regarding changes in the assumptions or unforeseen issues during execution. Research: Determining environmental hygiene quality of asphalt, foundation material and (watery) soil. Determining remediation needs. Determining reuse options/usability of soil and paving materials. Determining safety classes (T&F class). Environmental guidance and process management in accordance with BRL 6001., environmental
- Risk Assessments
6, werkvelden, Risk Assessments , discipline, Array, **Condition surveys Sound Predictions Vibration predictions Deformation analysis Damage predictions Monitoring plans Monitoring and supervising Damage investigations** , Every construction project influences the surroundings. Especially when construction is done in urban areas, the consequences this has for the surroundings must be thoroughly investigated. Does the construction of the basement create an unacceptable damage-risk profile for the adjacent building? Will the discharge pipe continue to function if the adjacency is elevated? Are the vibrations due to driving piles or installing sheet piles acceptable? How long can the groundwater level be lowered so as not to adversely affect the surroundings? CRUX is recognized by all insurers as a qualified party for conducting environmental-impact risk analyses to obtain the CAR insurance. Having a settlement risk analysis performed by CRUX may result in improved insurance conditions (premium, deductible), and it reduces the risks for the project developer, particularly with regard to the often-considerable costs of any delay in construction. A settlement risk analysis may also play an important political role in showing the parties concerned and in particular owners of adjacencies that the developer/contractor has seriously and thoroughly had the risks assessed by an external and independent, highly-qualified party. With the new tender forms, such as D&C, D&B, BVP and DBFM contracts, the most economically advantageous tender (‘Economisch Meest Voordelige Inschrijving’; EMVI) plays an increasingly important role. Conducting a settlement risk analysis and preparing a good monitoring and management plan can significantly improve the score on points such as limiting and controlling damage and nuisance to the surroundings. CRUX has unique expertise and experience in answering questions in the area of settlement risk assessment. We provide the following services within the field of settlement risk assessment: ### Adjacencies research For all projects, CRUX meticulously examines whether the nature of construction work gives reason for a preliminary investigation of the surrounding area. The damage sensitivity of the adjacent buildings can be determined on the basis of archival research, visual inspections, structural assessments, measurements and possibly a foundation study. Not only are buildings studied, but also civil structures , cables and pipes, roads, water works and/or vibration-sensitive equipment. ### Vibration predictions Piling or vibrating piles and sheet piling cause vibrations in the ground, which extend into a certain impact area around the construction work. Existing structures located in this impact area are subjected to these vibrations via the foundation and can suffer damage as a result. CRUX maps expected vibrations in advance by performing vibration predictions and tests vibration against the SBR-A measurement and assessment guideline relevant in the Netherlands for damage to buildings. Vibrations can also be tested against SBR-B (hindrance for persons) and SBR-C (failure of equipment). Where necessary, CRUX prepares set-ups for vibration tests to map the vibration impact on site. ### Deformation analyses Ground deformations are the foremost source of damage risks for the surroundings. Existing structures located in this impact area are subjected to these (change) distortions via the foundation and can suffer damage as a result. The ground deformations resulting from construction work are calculated by CRUX with, among other methods, the computer programs PLAXIS 2D and 3D. With these programs, it is possible to consider the stress and deformation condition and the stability of a ground massif with a complicated geometry. ### Damage predictions Damage predictions are performed in order to be able to take into account the consequences of settlements due to construction work. The information obtained from the adjacencies research and the deformation analyses is an important starting point for this. The predictions are tested against standards, guidelines and design recommendations. To assess the likelihood of damage to structures, CRUX has developed its own calculation model based on Holger Netzel’s graduate thesis. With the help of these design tools, an optimal design from the perspective of settlement risk assessment is created. This approach reflects the state-of-the-art in design practice domestically and abroad and has been successfully used by CRUX for damage predictions of adjacencies in small- and large-scale underground construction projects in an urban environment. ### Monitoring Where risks can be expected from the risk analyses, monitoring is a critical component. The monitoring precisely records the development of vibrations, deformations and groundwater levels during the execution. CRUX works with expert parties to perform the monitor of specific vibrations, displacements and groundwater levels. By measuring on time, intervention can be done in time during construction to prevent damage to the surroundings. ### Monitoring and management plans A monitoring plan includes the description of the necessary measurements of vibrations, displacements and groundwater levels during the execution. The size and specifications of monitoring, the measuring frequency and the test values are determined by CRUX based on risk analyses. Up to reaching the intervention value, the expectations for the settlement risk assessment and the damage risk profile from the risk analysis are met. If unforeseen deviations are detected based on measurements, whether implementing a (subsidence- or vibration-mitigating) measure is necessary can be determined in a timely way through feedback of the monitoring results with the damage predictions. CRUX can include such mitigating measures in advance in a management plan, so that in the case of any deviation during execution, it is immediately clear to everyone which measures can be applied to adjust the process. ### Monitoring supervising The supervising of monitoring works and expert interpretation of the measurement results by CRUX, during execution, is an important factor in the case of a sudden (continuing) increase in deformation in having a rapid understanding of the cause of any deviations, the impact on the outcome of the risk analyses and the necessity of implementing mitigating measures. ### Damage investigation Unfortunately, damage does sometimes occur as a result of construction projects. In that case, the cause must often be determined by means of an independent analysis. CRUX has the know-how, expertise and experience to perform thorough qualitative and/or mathematical analyses of the causal relationship between the work done and the damage that has occurred. CRUX frequently performs this (forensic engineering) work for insurers and legal parties (lawyers, courts). , risk-assessments
- Students on a mission 115, nieuws, Students on a mission, artikel, Array, In recent years, CRUX Engineering has always had the pleasure of welcoming enthusiastic and driven interns/graduates. Sometimes we put one of them in the spotlight. Meet Diana Portillo!, Diana Portillo Arreguin (student TUDelft) My internship took place from August 15th to November 30th at the office in Delft. It did not involve only one specific main task, but the technical collaboration in various engineering projects, as if I were a junior engineer working for the company. Nonetheless, I carried out two main projects. The first project was about the analysis of possible alternatives to overcome the ultimate limit state conditions of an existing foundation in Den Haag. The municipality planned an overpass over a section of the existing A12 highway. This structure was built over tension piles, but due to the new project, they will be subjected to compressive loads in the future. The goal of the investigation was to analyse if the existing piles have enough bearing capacity for compressive loads, and if necessary, evaluate alternatives to overcome the limitations. The second investigation was about the comparison of several FE modelling software (Plaxis, DIANA and Adonis). The selected options were evaluated and compared in terms of general technical aspects, user-friendliness, and licensing costs. The objective of this was to set the basis for further detailed analyses, and seek for quality alternatives to traditional geo-engineering FE modelling tools. Further, other projects in which I worked consisted of the design of deep and shallow foundations, and design of deep excavations considering retaining walls and supporting structures. This internship gave me the opportunity to develop my FE modelling skills, and also learn to use Deltares software (D-sheetpiling, D-settlement, D-foundations), which are highly required in the working field. From walking in on my first day until leaving, I gained plenty of knowledge and experience I did not know I would have before I started. Not only have I gained plenty of technical knowledge, but I have also learned a lot about my strong skills and have gained confidence in my own abilities. By doing this internship I reaffirmed that after graduation I would like to work as a geotechnical consultant and contribute to the development of safe infrastructure and new geo-engineering knowledge. Interested? In recent years, CRUX Engineering has always had several internship/graduate places available (and filled!) in the field of geotechnical engineering and construction. During this period, students from, among others, BSc Civil Engineering Alkmaar, Amsterdam, Haarlem and Utrecht, and MSc TU Delft and University of Twente have successfully completed their internships/studies at CRUX Engineering. CRUX is also open to foreign students. Are you an enthusiastic and motivated student of Civil Engineering or Structural Engineering, and are you interested in an internship/thesis project at CRUX? Send your CV and cover letter to [hr@cruxbv.nl](mailto:hr@cruxbv.nl)., students-on-a-mission
- Students on a mission II 116, nieuws, Students on a mission II, artikel, Array, In recent years, CRUX Engineering has always had the pleasure of welcoming enthusiastic and driven interns/graduates. Sometimes we put one of them in the spotlight. Meet Petros Zakynthinos!, Petros Zakynthinos (student TUDelft) My internship took place from September 1st to December 15th (3.5 months) at CRUX Engineering, at their office in Delft. CRUX mission is to provide excellent-quality advice in the field of geotechnical engineering, geohydrology, ground and settlement risk assessment. The main goal of my internship was to put the academic information I learned during my MSc studies into reality and to comprehend the impact of geotechnical engineering to society. I was given the chance to participate in all aspects of design as part of my internship, from concept development and modeling to visualizing the various stages of construction. My workday was off-site, where I worked both in design of simple and more complex projects. The spectrum of the problems consisted of: Design of a deep foundation system for the construction of an underground parking (2 layers deep) in Rotterdam Design of a deep foundation system for the construction of a road project. Design of the grout body of anchors for a dyke reinforcement project in Tiel Modelling of an overpass in A12 highway in The Hague Modelling of a construction of an elevator pit inside an existing building in The Hague. It was my first experience working in a geotechnical engineering design company and it was a great learning experience. It helped me grow not only in my future career, but also as a person. I collaborated with individuals from all backgrounds and took lessons from their experience. As an international student, I understood better what a workplace in the Netherlands entails and was able to socialize and expand my network. CRUX provided me with fantastic assistance and room to grow so that I could learn about many different parts of projects and, most importantly, how to think like an engineer. Interested? In recent years, CRUX Engineering has always had several internship/graduate places available (and filled!) in the field of geotechnical engineering and construction. During this period, students from, among others, BSc Civil Engineering Alkmaar, Amsterdam, Haarlem and Utrecht, and MSc TU Delft and University of Twente have successfully completed their internships/studies at CRUX Engineering. CRUX is also open to foreign students. Are you an enthusiastic and driven student civil engineering or structural engineering and interested in an internship/graduation position at CRUX Engineering BV? Then send your CV and motivation to [hr@cruxbv.nl](mailto:hr@cruxbv.nl). , students-on-a-mission-ii
- PhD study Marco Gerola 104, nieuws, PhD study Marco Gerola, artikel, Array, CRUX embraces the cooperation with companies, colleagues, graduates and interns from all over the world. We are glad to share our cooperation with the University of Milan for example. Marco Gerole is currently one of our PhD graduates and travels back and forth between Milan and Delft. We asked Marco how he divides his time and keeps his focus on his work. , why did you choose to do a PhD on energy geo-structures? I had already worked for six months at University of Trento before I sent the application for the PhD call, and I really appreciated the geotechnical research field in general. To be honest I only discovered energy geostructures (EGS) when I read for the first time the PhD description, because I think it is not so common to learn about geothermal subjects during a civil engineering course. But after reading some publications on EGS I was so impressed by the great potential that this kind of structures have. Then I realized that that EGS are necessary to reduce C02 emissions and thus contrast the world climate change, and this gave me a great motivation to apply for the PhD call. what is the focus of your studies? The most important project I am currently working on, in the frame of a collaboration between CRUX Engineering and the University of Milan, concerns the energy quay wall, that is an innovative EGS type. CRUX installed an experimental site facility near Delft to understand the real potential of this EGS and to understand the system behavior. They also installed a very good monitoring system to monitor a lot of different parameters, such as the temperature into the soil and the water flow into the pipes. I am trying to simulate with a Finite Element code the heat exchange between the energy quay wall and the surrounding soil and the water. I can validate my model with all the data collected from the monitoring system and thanks to the model I hope we can improve the efficiency of the system and simplify the design process. What is it that makes the energy sheet pile so interesting? Normally an EGS exchange heat only with the soil and after many years the EGS may be less efficient because the soil does not have an infinite heat to extract but it is necessary to establish a balance between the amount of heat extracted and injected, to have a more or less constant efficiency over time. But the energy quay wall is different because it can exchange heat with the open water that could be a canal. The temperature of the open water, that is flowing, seems to not be affected by the heat exchange with the energy quay wall so it represents a sort of infinite energy resource that could be really useful to use. Your generation is well aware of climate change, what are you doing yourself in this field? I feel that my work could be useful to reduce C02 emissions and to mitigate climate change, and this is also why I am very motivated to do my best. But I also think that if we want to stop climate change, everyone has to make an effort. Every day I pay attention to use only the resources that I need trying to avoid wastage. For example, I rarely use my car to go to work but I use my bike or the public transports, I never throw food away but I organize my meals carefully. When I go to supermarkets I buy as little plastic as possible. And I use the electricity for the lights or for cooking only when I need it. I could add other points on the list but I think I am trying to do as much as possible every day to slow down the climate change and I hope all the other people are committed to do that. What do you find interesting working both at the University of Milan and at CRUX? I really like working both at the University of Milan and at CRUX engineering. I was impressed the first time I discovered the energy quay wall project because I think it has a great potential and could reduce the energy consumption of buildings, which account for 40% of global energy consumption in the EU. Moreover I like to work on practical projects, like the energy quay wall one, because I know that my results, if they will be good, will be used in order to improve for example, the energy efficiency. I know there are a lot of other PhD students who are working on very theorical topics that are very interesting, but I prefer to see the application of my work, that is a great possibility when you work with a society like CRUX. And I think everyone has to experience living abroad at least once. Is there a big difference between Italy and the Dutch? I lived in Milan for 6 months and now I’m in Delft. I think there are many differences between the two cities. Milan is one of the biggest cities in Italy and I used to take public transportation such as trains, metro and buses, to go to the university. In Delft my life is easier because in less than 10 minutes by bike I can go to the CRUX office. Another big difference is the weather. In 6 months I think I saw the rain more or less 5 times in Milan and when I came in Delft it rained for a whole week, a very nice welcome! Also the temperature is quite different. In this July in Milan there were 40 degree in some days and in Delft the highest temperature I saw until now is more or less 27 degrees. But when I took the plane in June to move to The Netherlands I did not check the weather and I left my jacket in Italy because I thought I would find like 30 degrees. I will never forget my jacket again. Now you are staying in NL for a few months, what do you miss most about Milan? I miss my family, my friends and my colleagues at the university and I like to see the city surrounded by (some) mountains, this is quite hard to find in the Netherlands. But I think that is all. I really like living in Delft. It seems very peaceful compared Milan. There are few cars into the city and most of them I think are electric. I can go everywhere with my Swapfiets bike and I don’t have to wait to take public transports hoping they won’t be late. I almost forgot, but in my opinion the Italian food is unbeatable! Following on from the previous question; is your future in sunny Milan or in the Netherlands? This is a very difficult question. If someone had told me one year ago that now I would be in the Netherlands I would probably have started laughing. In my life I took my choices based only on what I like to do without thinking about the future. I applied for this PhD because I like doing research and I like the EGS topic, so when I discovered this occasion I thought it was perfect for me. Now I have at least other 2 and half years where I want to be focused on my work without other distractions. So what will I do afterwards? The best answer I can give is that I don’t know! But I’m sure I will try to keep doing a job the I like, and it could be both in Italy or in the Netherlands., phd-study-marco-gerola
- CRUX started a new company: CEMS B.V. is born! 56, nieuws, CRUX started a new company: CEMS B.V. is born!, artikel, Array, The last few months a small baby boom has been going on at CRUX Engineering and now a new baby sister company has been ‘born’ on a business level as well. Since last year, CRUX invests heavily in the development of the automation of its consultancy and engineering activities., The last few months a small baby boom has been going on at CRUX Engineering and now a new baby sister company has been ‘born’ on a business level as well. Since last year, CRUX invests heavily in the development of the automation of its consultancy and engineering activities. In order to contribute to these new developments, several colleagues have been made available and employees are continuously trained and supervised in terms of content. Because there is a desire at CRUX to further expand our IT services and products and to offer them to the market, we have set up a separate BV for this purpose under the CRUX Holding: CRUX Engineering MicroServices BV, in short CEMS. On behalf of CRUX Engineering, [Jacco Haasnoot](https://cruxbv.nl/en/team#jacco-k-haasnoot) remains the driving force behind the IT developments within CRUX Engineering BV and CEMS B.V. And [Ritchie Vink](https://www.linkedin.com/in/ritchievink/?originalSubdomain=nl) is co-founder and shareholder of CEMS. With this we have connected an expert, strong and innovative IT professional to CRUX and we are very happy with that! Besides [BouwRisk](https://bouwrisk.nl/), CRUX Engineering has a new baby sister! Through CEMS we will offer MicroServices to the market in the field of geotechnics, hydrogeology and monitoring. MicroServices are cloud-based tools that can be part of a design process or another form of automated service provision via an API. The website of [cemsbv.nl](https://cemsbv.com/) is still under construction so news articles are shared on cruxbv.nl and its [LinkedIn](https://www.linkedin.com/company/230990/admin/).
- Pilotproject Energiedamwand in De Zweth 58, nieuws, Pilotproject Energiedamwand in De Zweth, artikel, Array, Drawing energy from the hundreds of kilometres of quay walls in the Netherlands? In Amsterdam alone, some 200km of quay walls need to be renovated. Is it possible to install sheet piling in the quay walls that can extract heat and cold from the water and supply this energy to surrounding buildings?, Drawing energy from the hundreds of kilometres of quay walls in the Netherlands? In Amsterdam alone, some 200km of quay walls need to be renovated. Is it possible to install sheet piling in the quay walls that can extract heat and cold from the water and supply this energy to surrounding buildings? In our water-rich country, steel sheet piles are used in many places as riverbank protection. The Energy sheet pile wall is a system where these sheet piles are activated by so-called activation loops. By pumping a liquid through these loops, it is possible to extract heat (or cold!) from slowly flowing shallow water and from the water in the subsurface. After previous support from the Top Sector Energy, a consortium of CRUX Engineering BV, Handelmaatschappij Gooimeer B.V., Groep Duurzame Energie, TU Delft and TU Eindhoven will map the potential with a pilot project in De Zweth! https://youtu.be/2m_1mfAto5A https://www.youtube.com/watch?v=gYoQYAzsg8Y More information: [Artikel COB ‘Damwand als duurzame energieopwekker’ (oktober 2021)](https://www.cob.nl/magazines-brochures-en-nieuws/verdieping/november-2021/damwand-als-duurzame-energieopwekker/) (in Dutch) [Artikel NEN Magazine (oktober 2021)](https://nenmagazine.nen.nl/nenmagazine-3-2021/oud-winnaars/) (in Dutch) [CRUX trotse winnaar NENnovation Award](https://cruxbv.nl/nl/artikel/crux-trotse-winnaar-nennovation-award) (in Dutch) [Special Duurzame Geo Energie](https://cruxbv.nl/nl/special/duurzame-geo-energie) [Article Civiele Techniek (juli 2021)](https://cruxbv.nl/uploads/nieuws/58_12.ct2021-nummer-56-energiedamwand-lr3.pdf) (in Dutch) [Article Civiele Techniek (september 2020)](https://cruxbv.nl/uploads/nieuws/58_11.ct20207_art_proef_energie_damwand_www.pdf) (in Dutch) [Article van H20 Online (juli 2020)](https://cruxbv.nl/contents/uploads/specials/13_16.h2o-bericht-over-energiedamwand-22-juli-2020.pdf) (in Dutch),
- Symposium on Energy Geotechnics (SEG23) 112, nieuws, Symposium on Energy Geotechnics (SEG23), artikel, Array, As a leader in the field of Energy Geotechnics, CRUX, together with TU Delft, TU Eindhoven, Deltares and Cohere, is organising the International Symposium on Energy Geotechnics (SEG23) in Delft., As a leader in the field of Energy Geotechnics, CRUX, together with [TU Delft](https://www.tudelft.nl/citg/over-faculteit/afdelingen/geoscience-engineering/sections/geo-engineering/staff/academic-staff/dr-pj-phil-vardon), [TU Eindhoven](https://www.tue.nl/en/research/researchers/david-smeulders/), [Deltares](https://www.deltares.nl/nl/experts/ahmed-elkadi/) and [Cohere](https://www.cohereconsult.com/nl/siefko-slob) , is organising the International [Symposium on Energy Geotechnics (SEG23)](https://seg23.dryfta.com/index.php) in Delft. The reason for the symposium is to give science and practice the opportunity to exchange ideas and experiences on this topic. Keynote speakers in the field of energy geotechnics, state-of-the-art lectures and technical sessions focused on task forces of TC-308 are part of the SEG23. The upcoming edition of the symposium on energy geotechnics will be held under the auspices of the ISSMGE Technical Committee 308 on Energy Geotechnics and will take place from 3 to 5 October 2023. The keynote speakers for this event: Wessel van Kesteren (Fugro) Susan Gourvenec (Southampton University) Marcelo Sanchez (Texas A&M University) Chloé Arson (Georgia Tech) Ioannis Stefanou (Ecole Centrale de Nantes) During the international symposium, several CRUX colleagues will be present, including to explain the works of the Energy sheet pile at the stand of [Energiedamwand Nederland](https://energie-damwanden.nl/). Two of our colleagues have submitted an abstract and are speaking at SEG23: Vincent Leclercq: * Cutter Soil Mix-Energywall full-scale test experimental setup* Marco Gerola: * Numerical modelling of Energy Quay Walls to assess their thermal behaviour* The symposium SEG23 will take place from: Date: 3 to 5 Oct Location: Lijm & Cultuur > Rotterdamseweg 272, 2628 AT in Delft More info on the [website](https://seg23.dryfta.com/index.php) [You can register online here](https://seg23.dryfta.com/81-registration-fees-and-more/registration) In 2019, [CRUX co-hosted](en/article/crux-medeorganisator-symposium-energy-geotechnics) the national Energy Geotechnics Symposium, thanks to the success of that year, the symposium is now being organised internationally. , symposium-on-energy-geotechnics-seg23
- Amsterdam's groundwater system studied per district 47, nieuws, Amsterdam’s groundwater system studied per district, artikel, Array, What is the influence of the barrier effect of cellars, Rainproof Amsterdam and climate change on the groundwater system studied at district level in Amsterdam? , The groundwater system in urban areas is determined by the balance between natural processes and human activity. The balance between natural and human factors deserves careful attention, so that groundwater nuisance is prevented. However, this balance is under increasing pressure due to urbanisation (underground infrastructure and cellars) and climate change (increasing rainfall intensity). What is the influence of the barrier effect of cellars, Rainproof Amsterdam and climate change on the groundwater system studied at district level in Amsterdam? ***This article was previously published as a H2O-article on www.h2owaternetwerk.nl (in Dutch). A summary of the article online, has been published [in H20-magazine, may 2020](https://cruxbv.nl/uploads/nieuws/47_12.h2omei20-overlast-sted-grondw-onderzoeken-wijkniveau-adam.pdf) (in Dutch).* *Explanation of illustration > A: Increase in groundwater level due to precipitation. Cellars and streets are flooded. B: lowering of the groundwater level by evaporation. Foundation piles become dry, amsterdam-s-groundwater-system-studied-per-district
- Results Survey & Roadmap to the future 87, nieuws, Results Survey & Roadmap to the future, artikel, Array, It has been a few months since CEMS acquired ownership of MLU / MicroFEM from dr. Kick Hemker and we are hard at work on the new releases. , It has been a few months since CEMS acquired ownership of MLU / MicroFEM from dr. Kick Hemker and we are hard at work on the new releases. A survey among the current user base provided us with the future wishes of the users. The survey determined the overall satisfaction among users of both MLU and MicroFEM and surfaced the most wanted improvements. In this news item we present a short overview of the results and a teaser of our plans. On the topic of satisfaction, it can be said that about 2/3rd of the user satisfaction is good with MLU / MicroFEM, which is great to hear. There is however room for improvement and modernization. Based on the survey results the following improvements are in highest demand: 1. Improvements in user interface design 2. Visualization & import/export to GIS software 3. Make unconfined calculations in MicroFEM easier These improvements are our top priority on the roadmap. Both MLU and MicroFEM will be converted to a modern, web-based application with the source code converted from Pascal to Rust. MLU is first on our list with a scheduled 2021 release of the new interface followed by MicroFEM in 2022. When both applications are in their new release the improvements on GIS integration will follow (more on this topic later). Besides the user interface and GIS integration, many feature requests showed up through the survey. Some interesting requests mentioned are: Interaction with geological models Solute & heat transport modelling Inverse modelling Design of climate adaptation measures such as wadi’s MicroFEM should brew fresh coffee in the morning While we are ambitious in our ideas for MLU / MicroFEM, we can’t promise that all of these features will make it into the release. Especially that last request will be challenging ;). We share more developments and updates through the [CEMS website](https://cemsbv.nl/other-developments/microfem) and [LinkedIn channels](https://www.linkedin.com/groups/3704072/). Also, note that if you missed the survey you can always contact [info@microfem.com](mailto:info@microfem.com) for more information and suggestions. , results-survey-roadmap-to-the-future
- Crossroads 78, projecten, Crossroads, project, Array, Geotechniek,Omgevingsbeïnvloeding, Kondor Wessels Amsterdam, Sloterdijk, Amsterdam, 4,21, crossroads
- Wonderwoods 69, projecten, Wonderwoods, project, Array, Omgevingsbeïnvloeding,Geohydrologie, Wonderwoods Development (G&S Vastgoed en KondorWessels Projecten), Utrecht, 4,41, wonderwoods
- Atrium Zuidas 4, projecten, Atrium Zuidas, project, Array, Geotechniek, G&S Vastgoed, Amsterdam, 1, atrium-zuidas
- Landtunnel A4 27, projecten, Landtunnel A4, project, Array, Geotechniek, A4ALL, Delft-Schiedam, 19, landtunnel-a4
- De Groene Boog 67, projecten, De Groene Boog, project, Array, Geotechniek,Geohydrologie, o.a. Besix, Dura Vermeer, Van Oord, TBI, Rotterdam, 6,17,46,49,32,23, de-groene-boog
- Nieuwe Zeesluis 8, projecten, Nieuwe Zeesluis, project, Array, Second opinions & reviews, Omgevingsdienst Noordzeekanaalgebied, IJmuiden, 16,
- Strand East London 11, projecten, Strand East London, project, Array, Geotechniek, Vastint, Londen, 4, strand-east-london
- Conservatoriumhotel 54, projecten, Conservatoriumhotel, project, Array, Geotechniek, IQNN Vastgoed, Amsterdam, 1, conservatoriumhotel
- Walmuren Oudegracht 45, projecten, Walmuren Oudegracht, project, Array, Geotechniek, IBU Stadsingenieurs, Utrecht, 15,
- Dike Reinforcement KIJK 36, projecten, Dike Reinforcement KIJK, project, Array, Geotechniek, Hoogheemraadschap van Schieland en de Krimpenerwaard, Krimpenerwaard, 3,17, dike-reinforcement-kijk
- New Hoog Catherijne 40, projecten, New Hoog Catherijne, project, Array, Geotechniek, Corio, Utrecht, 6, new-hoog-catherijne
- Highway A12 24, projecten, Highway A12, project, Array, Geotechniek, Provincie Zuid-Holland, Gouda, 17,6,5, highway-a12
- Stabilisation quay walls 35, projecten, Stabilisation quay walls, project, Array, Second opinions & reviews, Max Bögl, Antwerpen, 1, stabilisation-quay-walls
- Costa Concordia Salvage 23, projecten, Costa Concordia Salvage, project, Array, Second opinions & reviews, TITAN-MICOPERI, Giglio, 1, costa-concordia-salvage
- NHow Amsterdam RAI Hotel 39, projecten, NHow Amsterdam RAI Hotel, project, Array, Omgevingsbeïnvloeding, COD, Amsterdam, 4, nhow-amsterdam-rai-hotel
- New Amsterdam Court House 7, projecten, New Amsterdam Court House, project, Array, Geotechniek, De Nijs & Zonen BV, Amsterdam, 7,15, new-amsterdam-court-house
- TOWER TEN - WTC Amsterdam 73, projecten, TOWER TEN – WTC Amsterdam, project, Array, Geotechniek, CBRE Global Investors, Amsterdam, 15,6, tower-ten-wtc-amsterdam
- Nieuwe Zeesluis (hydrogeology) 64, projecten, Nieuwe Zeesluis (hydrogeology), project, Array, Geohydrologie, Consortium OpenIJ, IJmuiden, 30,46, nieuwe-zeesluis-hydrogeology
- Thermal design Grabenstrasse 51, projecten, Thermal design Grabenstrasse, project, Array, Grondverbetering, Bilfinger Berger Specialtiefbau, Düsseldorf, 3, thermal-design-grabenstrasse
- New Rijksmuseum 53, projecten, New Rijksmuseum, project, Array, Geotechniek, Het Nieuwe Rijksmuseum, Amsterdam, 2,6, new-rijksmuseum
- Ocean Reef Island II - Punta Pacifica 1, projecten, Ocean Reef Island II – Punta Pacifica, project, Array, Geotechniek, Compañía Insular Americana, Panama, 1,21, ocean-reef-island-ii-punta-pacifica
- A1/A6 30, projecten, A1/A6, project, Array, Geotechniek, SAAone, Diemen – Almere Havendreef, 15,22, a1-a6
- Earthquakes 3, specials, Earthquakes, special, Array, With the recognition of the earthquake problem in the north of Groningen and the subsequent technical question concerning structural reinforcement, CRUX Engineering BV has in recent years developed into one of the experts in the field of induced earthquakes and the geotechnical risks involved., In a short time, a lot of expertise has been developed in the field of earthquake response, foundation testing, foundation reinforcement, softening, monitoring and the associated geotechnical (laboratory) research. During this period, CRUX has provided geotechnical advice for testing and reinforcing more than 80 buildings – including the prominent foundation repair of the Pastorie in Garrelsweer – and geotechnical designs for a broad range of new construction projects, including the development of the Velden in Groningen. CRUX Engineering has been part of the FiveL consortium since the end of 2017. The consortium works for clients for the purpose of strengthening and preserving buildings in the earthquake area. The team is set up in such a way that it can tackle these projects from A to Z, from inspection through completion. CRUX consultants support the builders of, among others, Blaauw ingenieurs & Goudsticker de Vries with load capacity tests and foundation reinforcement recommendations. CRUX is also actively involved in the development of the new practice guideline for earthquakes, the NPR9998, via the softening task force. Research The developments in the area of seismic geotechnical engineering never stop, and CRUX constantly supervises several graduates in the field of earthquake-related research. This approach guarantees the constant development of the knowledge level in the field of earthquake risks within the organization as well as a constant stream of newly graduated engineers familiar with the specific seismic problems in the Groningen region. This is desperately needed given the enormous technical task with which the construction industry in the Groningen region will continue to be confronted in the coming years. Monitoring From our years of experience with monitoring and risk management of urban projects, CRUX has an excellent view of the necessity and scope of monitoring the earthquake risks for, among other things, monumental and iconic buildings. We work together with trusted partners with years of experience in the field of monitoring. We are also working on new and innovative monitoring techniques that specifically connect with the seismic risks in the region. , earthquakes
- 3D Modelling 1, specials, 3D Modelling, special, Array, In the design of construction projects, increasingly use is being made of three-dimensional (3D) modelling. The increase in the available computing capacity and speed of computers and the improvements in the available software (such as Plaxis and GeoSlope) mean that the difference in costs, computing time and possibilities compared to standard 2D calculations are becoming smaller and smaller., What will it do for you? 3D ‘finite element calculation models’ (FEM) offer the great advantage that conservative assumptions, which are often required in 2D models, can be omitted. Investing in a 3D calculation can therefore result in positive financial returns, since the design of the foundation and/or construction pit is optimized through a more realistic consideration and better insights into the deformation behaviour. In addition, the risk profile can also be better mapped and managed. This applies in particular for foundations that can impact each other and where different deformations can occur in asymmetrical conditions and/or with large local differences in foundation loads. Where a quay wall or (highway) road can be well modelled as a line element (2D), a construction pit is a structure that should be considered 3D, in view of the corner effects. The force effect and the deformation behaviour in the corners of a construction pit are namely different from the behaviour in the middle. This has consequences for struts and anchoring, as well as for the settlement impact on adjacencies. For example, adjacent buildings or cables and pipes at these corners will deform less due to the greater stiffness of the construction pit. CRUX is specialized and highly skilled in performing 3D calculations using PLAXIS and has done this for the following projects, among others. , 3d-modelling
- CRUX RisK SCAN 4, specials, CRUX RisK SCAN, special, Array, Every construction project impacts the surroundings. When construction is done in an urban setting, attention to and research into the environment impact is important. Will the construction of a basement cause damage to the adjacent property? Will the discharge pipe continue to function if the adjacency is elevated? Are the vibrations due to driving piles or vibrating sheet piles excessively high for a parcel or (production) process? How much and for how long can the groundwater level be lowered without subsidence of nearby buildings?, CRUX RisK scan Based on the CRUX RisK scan (risks and opportunities), the above questions can be answered, and we investigate qualitatively whether the underground and environmental risks in, for example, a building plan have been sufficiently considered. The scan can be used in the development and start-up of the construction process, but also as an interim control moment. In addition, it can play an important role as an instrument for making it clear to all parties involved that you as a governmental authority, client, architect or builder, project developer, developing builder or construction company/contractor have had the risks considered in a serious and thorough way by an external and independent client, qualified party. Depending on the building plan, the following components may be discussed in our scan; Ground composition and ground conditions, groundwater Deformation and stability of (sub)ground Adjacencies (settlement risk assessment) Foundations and/or retaining structures Vibrations Ground contamination Optimization opportunities Risk analysis and management Construction phasing/order of work, crux-risk-scan
- Energy sheet pile 13, specials, Energy sheet pile, special, Array, The Netherlands is increasingly working on an energy transition to sustainable heating and cooling. For CRUX, it is clear that the subsurface makes an indispensable contribution to the design of techniques for a sustainable energy need. CRUX provides high-quality design & advice in the field of generating and storing sustainable Geo-Energy., Thinking in terms of underground energy flows, CRUX gained experience in drawing up the thermal design for recent large ground freezing projects in Rotterdam and Amsterdam. Subsequently, this knowledge, in combination with geohydrological ‘‘know-how’‘, is applied in the sustainable energy sector. In order to share and increase the knowledge in the chain, CRUX organised the [Energy Geotechnics Symposium](https://cruxbv.nl/nl/artikel/energy-geotechnics-symposium-het-begin-van-een-reeks) (link in Dutch) in Delft in 2019. In addition, CRUX is an initiator of an innovative method to extract energy from quay wall constructions in the Netherlands. This involves extracting thermal energy from surface water and buffering it in the subsurface. Since 2019, CRUX has been leading in the design and implementation of the Energy Sheet Pile Test. These two technologies can be combined very well, offering an elegant solution for an inner city heat demand. Q-sHeat Energy sheet pile wall Waterways form a large part of our Dutch landscape. Quay walls and sheet piling are often the chosen riverbank protection. The water in the subsurface and in the waterways is often just warmer than the outside air. By means of heat exchangers on these quay constructions, the heat can be extracted from the water and the soil. Due to the large number of quay constructions a considerable heat potential is available here. The energy sheet pile wall is a patented system in which the sheet piles can be activated over any desired height by means of activation loops placed on the plank. By pumping around a liquid substance, it is possible to extract heat from slowly flowing, shallow water and the subsoil. The extracted heat can then be upgraded for heating buildings by means of a heat pump. The system also offers the great advantage of being able to turn around to meet cool demand. This also makes it extremely suitable for acclimatizing buildings in hot summer months. The strength of the energy sheet piling lies in the thermal conductivity of the steel. Thanks to the way in which the heat exchangers are fixed to the sheet pile wall, the high thermal conductivity of steel is used to return the heat in the ground from the surface water in the months when no heat is extracted. A test set-up is set up at the village of “De Zweth”. The aim is to test the potential of the energy sheet piling to reduce CO2 emissions from the waterways of the province of South Holland. In cooperation with [Gooimeer](https://www.gooimeer.nl/stalen-damwand/stalen-damwand/energie-n-damwanden), [Groep Duurzame Energie](https://www.duurzaamopgewekt.nl/), TU Delft and TU Eindhoven the heat extraction and storage performance of the Q-sHeat will be tested. The test has a duration of 2 years, during which the sheet piling loops are tested on different activation depths and operating scenarios. https://youtu.be/eUMarkquHxA https://youtu.be/2m_1mfAto5A More information: [Artikel COB ‘Damwand als duurzame energieopwekker’ (oktober 2021)](https://www.cob.nl/magazines-brochures-en-nieuws/verdieping/november-2021/damwand-als-duurzame-energieopwekker/)(in Dutch) [Artikel NEN Magazine (oktober 2021)](https://nenmagazine.nen.nl/nenmagazine-3-2021/oud-winnaars/) (in Dutch) [CRUX trotse winnaar NENnovation Award](https://cruxbv.nl/nl/artikel/crux-trotse-winnaar-nennovation-award) (in Dutch) [Pilot project Energiedamwand in de Zweth](https://cruxbv.nl/en/article/pilotproject-energiedamwand-in-de-zweth) [Artikel Civiele Techniek (juli 2021)](https://cruxbv.nl/uploads/specials/13_17.ct2021-nummer-56-energiedamwand-lr3.pdf) (in Dutch) [Artikel Civiele Techniek (september 2020)](https://cruxbv.nl/uploads/nieuws/58_11.ct20207_art_proef_energie_damwand_www.pdf) (in Dutch) [Artikel van H20 Online (juli 2020)](https://cruxbv.nl/contents/uploads/specials/13_16.h2o-bericht-over-energiedamwand-22-juli-2020.pdf) (in Dutch) More information on Soil Energy | Aquifer Thermal Energy Storage (ATES).(https://cruxbv.nl/en/discipline/soil-energy) , energy-sheet-pile
- Pile embankment structures 2, specials, Pile embankment structures, special, Array, A pile embankment system, granulate embankment on piles , granulate embankment on slender piles (GSP) or Load Transfer Platform (LTP), consists of a field of (usually slender) piles, with an embankment on it. This usually consists of a granulate fill that is reinforced with a geosynthetic material. On top of that, the embankment can be further elevated with sand or a granulate. Finally, the pile embankment is finished with a foundation layer and a paving or railway track, and in some cases even a soil embankment founded on steel., CRUX Engineering is currently the engineering firm with the most experience in the Netherlands in designing LTPs. The designs of these LTPs have followed the development of the applicable standards and guidelines, initially based on BS8006 (in GB), EBGeo through the current Dutch design guideline for Pile embankment systems CUR226 (version 2016). CRUX Engineering has actively participated with various employees in the two DelftCluster – CUR working groups, which resulted in the first and revised Pile embankment systems design guidelines (CUR 226, 2010 and 2016). CRUX Engineering, along with ProRail, Voorbij FT, Huesker, Movares and Deltares, has also participated in an extensive monitoring programme of a pile embankment system in Houten (the first in the Netherlands, at the location of the railway). The designing of an LTP is done with internally-developed spreadsheets based on advanced analytical calculations supplemented with PLAXIS calculations. Some examples of the pile embankment systems designed and realized by CRUX are: Barendrecht (Tramplus line), Almere (Literatuurwijk noise barrier, Bastions), Haarlemmermeer (Zuid branch), Wijdemeren (N201 Turborotonde), Beesd (A2 Culemborg – Deijl) and Houten (the first in the Netherlands, at the location of the railway), Urk (crane installation sites for the construction of wind turbines), Gouda (PST A12), Gouda (VRI N207-N454) and the ring road of Reeuwijk-Brug, with the longest pile embankment in the Netherlands at a length of approximately 3.4 km. , pile-embankment-structures
- State-of-the-Art Dikes 5, specials, State-of-the-Art Dikes, special, Array, CRUX Engineering was one of the first consultancy firms in the Netherlands to apply ‘state-of-the-art’ geotechnical expertise to the research and design of dikes. In addition, CRUX offers comprehensive support for the design process, the execution of the environmental studies and the inventory of the risk of damage and for limiting this as well as possible., CRUX has extensively assessed the safety of the KIJK dike (Krachtige IJsseldijken Krimpenerwaard), in particular for outward and inward macro-stability, based on the new flood protection standards in accordance with WBI2017. In addition to the traditional techniques of dike reinforcements, such as the use of support berms, CRUX also has experience with innovative techniques such as dike spiking and optimization for longitudinal structures. In addition, CRUX has been involved for more than two years in developing the Probabilistic Model Macro Stability (PMMS). The objective of the PMMS is to make available a practical, quick and accurate method to determine a reliability level or a failure probability of a flood defence. This is done through a combination of a number of FEM model calculations (usually PLAXIS) and the PMMS, so that minimal effort is required to achieve maximum results. The PMMS is a further development of the probabilistic model described in the TR Kistdammen and Diepwanden. Some exceptional features of the model are the ability to include geometrical uncertainties in the reliability level based on multivariate statistics and to be able to discount those uncertainties in the shear strength in the PMMS using a FORM analysis from the Shansep model. CRUX also has the expertise to gather the right information and identify risks, with which the design team can be supported and guided. The information gathered concerns archival investigations, visual inspections of the buildings and the determination of the autonomous subsidence rate of the buildings and the dike based on satellite measurements. For special cases, a detailed mathematical analysis can be performed using the detail data. CRUX uses the expertise it has gained in the urban construction of construction pits and tunnels. This can be used to determine the risk of damage for individual or multiple buildings, so that the risk of damage of a reinforcement solution can be clearly substantiated. With this experience and expertise development, CRUX is at the forefront of geotechnical testing and design of flood defences in the Netherlands. , state-of-the-art-dikes
- Our PLAXIS Expert Assistance 7, specials, Our PLAXIS Expert Assistance, special, Array, CRUX offers assistance to engineering companies worldwide in the modelling of geotechnical problems using FEM calculations by means of PLAXIS. Because CRUX is highly experienced in a wide range of geotechnical design issues and also has been involved in the use and development of PLAXIS since the early days of this FEM program, we are the ideal partner to help you with specific modelling issues. This way you can reach the optimal model for your calculations, as well as help your employees significantly develop their PLAXIS modelling skills., CRUX offers support to engineering companies worldwide in the modelling of geotechnical problems using FEM calculations by means of PLAXIS. Because CRUX is highly experienced in a wide range of geotechnical design issues and also has been involved in the use and development of PLAXIS since the early days of this FEM program, we are the ideal partner to help you with specific modelling issues. This way you can reach the optimal model for your calculations, as well as help your employees significantly develop their PLAXIS modelling skills. The geotechnical modelling experts of CRUX are both skilled in very practical design as well as in advanced finite element modelling issues. CRUX engineers also have extensive experience in choosing the correct material models and soil and structural parameters for your model. Over the years CRUX has helped out many international companies with their PLAXIS modelling issues and has trained a wide range of geotechnical engineers in the (advanced) use of PLAXIS. For instance, we can help you with building an optimal mesh and model, defining calculation stages and fine tuning your calculation. Our extensive project experience will help you find errors and workarounds much quicker and easier. In addition, CRUX also has very convenient pre- and postprocessing software available that can help you considerably speed up your calculations and interpretation processes. This way you will be able to work considerably more efficient! Also, because CRUX mainly works in the Netherlands and, when working abroad, are almost exclusively active for Dutch contractors, there is no risk for any conflict of interest. Our services can be provided on site, on your location, at our location and/or by video conferencing / desktop sharing services and range from a quick brainstorm to extensive on-site support. CRUX services can be performed on an hourly rate or on a fixed fee basis. The client should be in possession of their own PLAXIS license. CRUX will not accept any design liability for the work committed under the expert service contract (for this an engineering contract should be granted). , our-plaxis-expert-assistance
- GIS (Geographical Information System) 6, specials, GIS (Geographical Information System), special, Array, Our projects are related to the geographical location: both the ground and the surroundings are different for each project. In order to incorporate these insights in our advice, we use GIS (Geographic Information System). Here we link information to the project location and surroundings at an early stage, so that efficient insights can be gained into opportunities and risks, since it is true that ‘a picture says more than a thousand words’., The GIS is an interactive system and can serve as a database of geographic information during projects and for the presentation of ground research, monitoring plans and various geotechnical analyses. For special cases, a detailed mathematical analysis can be performed using the detail data. CRUX uses the expertise it has gained in the urban construction of construction pits and tunnels. This can be used to determine the risk of damage for individual or multiple buildings, so that the risk of damage of a reinforcement solution can be clearly substantiated. , gis-geographical-information-system
- Almer E.C. van der Stoel 1, team, Almer E.C. van der Stoel, team, CEO, See Dutch page
- Alwin (A.W.G.) Rutgers 10, team, Alwin (A.W.G.) Rutgers, team, Geotechnical Senior Consultant, See Dutch page
- Anita Mulder 37, team, Anita Mulder, team, HR&O Consultant, See Dutch page
- Arjan Wisse 19, team, Arjan Wisse, team, Geotechnical Senior Consultant | Partner, See Dutch page
- Arnold F.J. Bleumink 11, team, Arnold F.J. Bleumink, team, Strategical Senior Consultant for Soil, See Dutch page
- Auke T. Balder 4, team, Auke T. Balder, team, Senior Specialist | Partner, See Dutch page
- Bas Flierman 20, team, Bas Flierman, team, Environmental Consultant | Supervisor, See Dutch page
- Bas Snijders 5, team, Bas Snijders, team, Senior Specialist | Director, See Dutch page
- Ben van Meeteren 45, team, Ben van Meeteren, team, Environmental Consultant | Supervisor, See Dutch page
- Bob van Amsterdam 89, team, Bob van Amsterdam, team, Geotechnical Consultant, See Dutch page
- Bryan Sjauw Pan 44, team, Bryan Sjauw Pan, team, Finance Employee, See Dutch page
- Camille Luichies 82, team, Camille Luichies, team, Strategy & Policy Coordinator, See Dutch page
- Daan Vink 12, team, Daan Vink, team, Geotechnical Specialist, See Dutch page
- David Hartmann 21, team, David Hartmann, team, Geotechnical Senior Consultant, See Dutch page
- Dimitrios Kargias MSc. 86, team, Dimitrios Kargias MSc., team, Geotechnical Consultant, See Dutch page
- Dirk G. Goeman 9, team, Dirk G. Goeman, team, Geotechnical Specialist, See Dutch page
- Gerhard W. Winters 30, team, Gerhard W. Winters, team, Geohydrological Senior Specialist, See Dutch page
- Guido Meinhardt 7, team, Guido Meinhardt, team, Senior Specialist | Partner, See Dutch page
- Harrie M.H. Dieteren 8, team, Harrie M.H. Dieteren, team, Geotechnical Senior Consultant, See Dutch page
- Holger D. Netzel 2, team, Holger D. Netzel, team, Board of advisers, See Dutch page
- Ivaylo Pantev MSc. 80, team, Ivaylo Pantev MSc., team, Geotechnical Junior Consultant , See Dutch page
- Jacco K. Haasnoot 3, team, Jacco K. Haasnoot, team, Senior Specialist | Director, Jacco Haasnoot has worked as an all-round geotechnical consultant for more than 25 years, with a focus on risk management in geotechnical projects. Jacco graduated as a mining engineer, specialising in engineering geology, so he always includes the geological component in his advice. This risk management is based on extensive analysis of the situation, the technical effects the project may have on the environment and control during execution through monitoring. Major projects to which Jacco has made a significant contribution include the Noord/Zuidlijn in Amsterdam, the Rotterdamsebaan in The Hague and the Rotterdam Centraal metro station. He has also carried out and supervised designs in the areas of settlement and stability. Advice is substantiated with the latest calculation methods, in which finite element models usually play an important role. Ground improvement techniques, such as soil freezing and jet grouting, are substantiated and targeted to bring the risk profile of a project to an acceptable level. Finally, Jacco’s CV is characterised by exploring and applying new innovative techniques. An excellent example is the Energy sheet pile, in which a foundation element is given a second function by using the geothermal properties of the underground. CRUX Holding’s IT activities are carried out from CEMS, a development of which Jacco is initiator and director. Awards and prizes show that these initiatives are also appreciated outside CRUX. Jacco’s roles within the CRUX companies (CRUX Holding, CRUX Engineering and CEMS – CRUX Engineering Microservices) are: R&D and Innovation lead at CRUX; initiator Energiedamwand – director Energiedamwand Nederland BV; initiator Automated Engineering at CRUX – director CEMS – CRUX Engineering MIcroservices; senior specialist office CRUX Engineering Delft. Jacco represents the Netherlands in TC308 “Energy Geotechnics” of ISSMGE (International Society of Soil Mechanics and Geotechnical Engineering). Jacco is also course leader for the PAO course “Soil Improvement Engineering” and sits on the European Implementation Standards Committee for Ground Freezing on behalf of the Netherlands.
- Jan Aartsen MSc. 85, team, Jan Aartsen MSc., team, Geotechnical Junior Consultant, See Dutch page
- Jasper Havik MSc. 49, team, Jasper Havik MSc., team, Geohydrological Senior Consultant, See Dutch page
- Jefta Bouma 15, team, Jefta Bouma, team, Geotechnical Senior Consultant, See Dutch page
- Jennifer Kalkhoven 81, team, Jennifer Kalkhoven, team, Office manager, See Dutch page
- Johan Zwaan 6, team, Johan Zwaan, team, Senior Specialist | Partner, See Dutch page
- Jordy van de Ven MSc. 84, team, Jordy van de Ven MSc., team, Junior Geohydrological Consultant, See Dutch page
- Jorrit de Vries 75, team, Jorrit de Vries, team, Geotechnical Junior Consultant, See Dutch page
- Karin Veenman 42, team, Karin Veenman, team, Marketing & Communications Coordinator, See Dutch page
- Kirsten Dobber Thomsen 26, team, Kirsten Dobber Thomsen, team, Controller, See Dutch page
- Korneel (F.K.) de Jong 16, team, Korneel (F.K.) de Jong, team, Geotechnical Senior Consultant | Partner, See Dutch page
- Maarten J. van Baars 13, team, Maarten J. van Baars, team, Geotechnical Senior Consultant | Head of department, See Dutch page
- Michel de Koning 17, team, Michel de Koning, team, Geotechnical Senior Consultant, See Dutch page
- Patrice de Wolf 70, team, Patrice de Wolf, team, QWE Coordinator, See Dutch page
- Rik Honing 29, team, Rik Honing, team, Geotechnical Senior Consultant, See Dutch page
- Roderik van der Kamp 22, team, Roderik van der Kamp, team, Geotechnical Senior Consultant, See Dutch page
- Sander Broeders 58, team, Sander Broeders, team, Geotechnical Consultant, See Dutch page
- Senne Koevoets 90, team, Senne Koevoets, team, Geotechnical Junior Consultant, See Dutch page.
- Stavros Kazamiakis 87, team, Stavros Kazamiakis, team, Geotechnical Junior Consultant, See Dutch page
- Thomas Sweijen 41, team, Thomas Sweijen, team, Geohydrological Specialist, See Dutch page
- Tim van Koelen 92, team, Tim van Koelen, team, Geotechnical Consultant, See Dutch page
- Vincent Leclercq MSc. 68, team, Vincent Leclercq MSc., team, Geotechnical Consultant, See Dutch page
- Wout Hanckmann MSc. 83, team, Wout Hanckmann MSc., team, Geohydrological Consultant, See Dutch page
- Amsterdam 1, vestigingen, Amsterdam, contact, CRUX Engineering BV Pedro de Medinalaan 3c 1086 XK Amsterdam Nederland KvK Amsterdam 34171248
- Delft 2, vestigingen, Delft, contact, CRUX Engineering BV Phoenixstraat 28C 2611 AL Delft Nederland
- Eindhoven 3, vestigingen, Eindhoven, contact, CRUX Engineering BV Esp 228 5633 AC Eindhoven Nederland
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