Case Studies

SOILS IMPROVEMENT FROM CONCEPT TO COMPLETION

Location: Weston-Super-Mare, Somerset, UK - 1998

 

Client: LIDL

 

Main contractor: HBG

 

Works undertaken:The original specification for pavement construction in external parking areas was amended to allow for subsoil stabilisation to be used to treat suitable available soils to depths of 250mm and 350mm, to a specification equivalent to a capping material (i.e. with a 15% soaked CBR value, and frost resistance where appropriate, where the stabilised soils lay within the frost heave layer). Approximately 5600m³ of primarily clay, with some silty sand deposits, were treated in lieu of offsite removal of surplus spoil, and to replace imported capping material. The works were carried out over a period of 2 weeks, in April 1998.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Location: City General Hospital, Stoke on Trent - 2006

 

Client:NHS

 

Main contractor: Laing O’Rourke Midlands Limited

 

Works undertaken: approximately 7000m³ of treatment of unsuitable material, to decrease the moisture content and produce a modified fill material.

 

 

 

 

 

 

 

Location: Alnwick, Northumberland - 2006

 

Main contractor: Mansell Construction Services Limited

 

Works undertaken: approximately 6600m³ of treatment of unsuitable material, to decrease the moisture content and produce an engineered foundation fill material (5% CBR).

 

 

Location: Lisburn, County Antrim - 2006

 

Client: Coca Cola

 

Main contractor: P J Careys PLC

 

Works undertaken: approximately 150,000m³ of treatment to engineer subsoils to increase allowable bearing pressures to 150kN/m² (building footprint) and 80kN/m² (external areas); and 100,000m² of soil treatment, along with HEIC (High Energy Impact Compaction), to produce a stabilised capping material (15% CBR).

 

 

 

 

 

Location: Ashford, Kent - 2006

 

Main contractor: Bluehammer Limited

 

Works undertaken: approximately 1000m³ of engineered foundation fill (5% CBR), 1000m³ to provide an allowable bearing pressure of 15kN/m² (Structural foundation fill) and 5000m² of capping (15% CBR).

(The movie)

Location: Leeds Valley Park, Leeds - 2005

 

Main contractor: Bowmer and Kirkland Limited

 

Works undertaken: approximately 15,500m³ of capping (15% CBR).

 

 

 

Location: City General Hospital, Stoke on Trent - 2006

 

Client:NHS

 

Main contractor: Laing O’Rourke Midlands Limited

 

Works undertaken: approximately 12,500m³ of treatment to achieve an engineered foundation fill specification (5% CBR).