Page 1 - Deep Basements Project Examples

Godalming London Exeter
01483 310600 020 3096 7567 01392 439905
Harrogate Bristol Dublin
01423 276000 0117 373 6140 (01) 554 6210

Deep Basements

How CGL Can Help You Our Strengths
CGL aims to help its clients by reducing risks, reducing Ÿ Technical Expertise
costs of construction, shortening construction
programmes, improving cost effectiveness or viability or Ÿ Specialist Advice
facilitating the approval process. Ÿ Pragmatic Thinking
Ÿ Innovative Solutions
Site Investigation
Ÿ Value Engineering
CGL aims to maximise benefits from site investigation by
combining geotechnical and geoenvironmental
investigation where appropriate. This avoids multiple Ground Modelling/Numerical Analysis
investigations and facilitates modifications to the scope on CGL offers detailed ground modelling to aid geotechnical
the basis of site observations and is key to avoid design, using specialist software such as PLAXIS 3D, PDISP,
unexpected costs of bulk soil removal. FREW, FLAC, WALLAP and SLOPE. Modelling has been
undertaken for deep basements, steep retained slopes and
Retaining Wall Design design of foundations over and around existing sensitive
structures.
CGL's geotechnical engineers are skilled in developing
sustainable embedded retaining wall design solutions that
add value by being cost effective, facilitate construction or Temporary Works Design
maximise available space in the temporary condition. CGL's engineers provide advice to optimise temporary
Designs include sheet piles and king posts, diaphragm works solutions for piled walls, basement propping, plunge
walls, secant and contiguous walls through to more columns, king post designs, berm stability, cofferdams,
innovative solutions involving buttress piles, injection tower crane foundations and working platforms. Our
grouting and plunge columns to provide efficient design engineers can also provide temporary works structural
solutions that overcome challenging ground conditions. design of capping beams, thrust blocks and corbels and
use software including CADS A3D, Steel Work Member
Basement Impact Assessments Design (SWMD) and AdSec to develop designs.
CGL's experience includes production of over 300 BIAs
tailored to the requirements of the current planning
guidelines of local authorities. Over the past few years
they have developed into complex documents that require
a qualitative groundwater/surface water flow assessment
and desk study, plus ground movement assessments with
heave calculations or retaining wall assessments.

Construction Sequencing
Construction sequencing dictates ground movements in
most cases. CGL's experience in temporary works design
enables us to provide realistic and buildable construction
sequences which can then be modelled to predict ground
movements.

visit our website at cgl-uk.com