Excavation

Dig out and remove 6m x 6m approx 2.5m deep. All soil to be stockpiled for removal by grab lorry. Dig out soil for 300mm below finished floor level, and create toe around outside 200mm deep. Lay out 100mm crushed concrete in the centre and compact.

Time taken for completion : 5 days
Grab lorries of waste : 12 loads