At CGL, our expert team conducts Earthworks design for various-sized schemes under a variety of ground conditions, along with ensuring earthworks are implemented under proper construction control.

Our Earthworks Design and Control Services 

We can develop effective earthworks design strategies as part of a larger enabling works package that addresses remediation planning and regulatory issues to deliver a build-ready development platform for our clients, allowing follow-on contractors to continue as normal.

Our senior staff has substantial experience in the design of major earthworks schemes, including:

  • Highways And Rail Schemes,
  • Landfill Reprofiling and Redevelopment,
  • Large Mass Balance Exercises.

Many of these have necessitated detailed engineering analysis to overcome difficult ground conditions and ensure long-term stability and serviceability.

Earthworks Design Specification, Assessment and Testing 

Our capabilities include the production of earthworks specifications, assessment of sources to identify material suitability, the effective reuse of materials, and minimisation of the cost of imported fill. 

Our approach uses the principle of ‘relationship testing’ where complex engineering parameters can be correlated to routine test procedures on site. This simplified but robust approach to compliance testing results in confidence in the construction and savings in earthworks design programs.

Earthworks Design Specialist Engineers    

CGL specialises in the design of earthworksover soft alluvial soils and in the design of ground improvement methods to enhance settlement rates. Typically, these permit settlements would take 12 or 18 months under normal conditions but can be completed in as little as 3 to 6 months, substantially reducing construction programs and associated costs.

In addition, careful earthworks design with geotextile reinforcement can lead to the creation of near-vertical walls and development platforms that can allow highly constrained sites to become developable. 

We have been involved in a number of schemes in which levelling of sloping sites has been recommended to allow the construction of residential development. Similarly, the judicious use of test data and detailed specifications can be used to allow placed fill to support structural foundations.

In-House Waste Advisors – Disposal Classification

Where earthworks necessitate the removal of contaminated materials, CGL’s in-house waste advisors are able to refine disposal classifications that substantially reduce off-site disposal costs. 

Our work often leads to substantial savings which make marginal schemes financially viable. An example of this is our recent involvement with the Wandsworth project. Clients often seek our independent advice during early tender evaluation to enhance their competitive position and, ultimately, their success rate.

Why Choose CGL For Earthworks Design and Control Services?

At CGL, we are industry-leading experts with a proven track record in providing earthworks design and control services throughout the UK.   

Supporting our earthworks designs, we provide construction quality assurance services to monitor and validate the formation of different types of earthworks ranging from simple capping layers and reprofiled sites, to large, reinforced earth structures. 

This independent validation and certification offers confidence to clients that their asset conforms to the relevant design codes, providing posterity for the future.