2020 Finalist for Technical Excellence – The Evolving Buttress Pile Solution.
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Our geotechnical work has been recognised by a series of Ground Engineering awards including: These often require rigorous checking and approvals processes.ĭepending on the complexity, our analysis and designs are undertaken using conventional (WALLAP, PDISP, GWALL) or advanced numerical (FLAC 2D and PLAXIS 3D) analysis software, or if required a combination of both. We also carry out ground movement analysis to assess the impact of retaining wall installation, basement excavation, retaining wall deflection and foundation loading on site constraints such as neighbouring structures (often listed buildings), Network Rail, National Grid, London Underground and Thames Water infrastructure. Where piled walls have been proposed in competent soils, our detailed analysis and implementation of observational methods have allowed the replacement of such elements with open-cut slopes and king posts, even adjacent to sensitive railway infrastructure. We have also designed numerous pile-raft foundations to eliminate the need for large diameter and deep conventional piles through difficult ground conditions, including the reuse of existing piles where relevant. Our soil-structure interaction analysis of foundation options has enabled the removal of pile foundations from designs and substituted them by more conventional raft foundations with associated benefits of decreased cost and programme time.
We are proud to have won awards for our innovative approach, which often reduces cost, risk, uncertainty or timescale in construction projects.
CGL’s Geotechnical Design services include:
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By exploring non-conventional and innovative solutions with the support of advanced numerical analysis software we have often added value engineering to projects for our clients. We can use a range of analytical software systems to predict soil-structure interaction with a high degree of accuracy enabling us to design appropriate solutions to the risks faced at a particular site. Our Geotechnical Design team at CGL has strong design and engineering expertise for temporary and permanent works including foundations, retaining walls and earthworks.