Case Studies
LIDL
Location
Weston-Super-Mare, Somerset, UK - 1998
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.
NHS
Location
City General Hospital, Stoke on Trent - 2006
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).
Coca Cola
Location
Lisburn, County Antrim - 2006
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).
Location
Leeds Valley Park, Leeds - 2005
Main contractor
Bowmer and Kirkland Limited
Works undertaken
Approximately 15,500m3 of capping (15% CBR).
NHS
Location
City General Hospital, Stoke on Trent - 2006
Main contractor
Laing O’Rourke Midlands Limited
Works undertaken
Approximately 12,500m3 of treatment to achieve an engineered foundation fill specification (5% CBR).
