Specs & Compliance
Automated checks of the ground model against project specifications and codes of practice.
Class 1A/1B granular fill — max particle size 125 mm, ≤15% passing 63µm.
River Terrace Deposits meet grading for Class 1B general fill. Suitable for reuse below formation.
Acceptable earthworks materials — organic/soft cohesive excluded as structural fill.
Alluvium (soft organic CLAY, 0.5–1.5 m) is unsuitable (U1). Strip and dispose or stabilise; do not reuse.
Verify GEO ultimate limit state for spread foundations.
Allowable bearing in London Clay to be confirmed via Calculators (Bearing Capacity) — pending CU triaxial data.
Dewatering required where excavation extends below groundwater.
Groundwater rests ~3 m bgl in gravels. Excavations >3 m require dewatering / cut-off — design needed.
Ground gas risk assessment where Made Ground present.
Made Ground (ash/fill) present in all BHs. Gas monitoring rounds recommended before characterisation.