ABSTRACT
Shallow foundations Allowable bearing capacity 25 mm for building Deep foundations Shaft friction 10 mm for shaft friction to be mobilised Retaining walls Active and passive earth 0.1% H for Ka to be mobilised in dense sands
Pressure coefficient 1% H for Kp to be mobilised in dense sands Reinforced soil walls Frictional and dilatancy to 25 to 50 mm for geogrids
transfer load to soil 50 to 100 mm for geotextiles reinforcement
Pavements Rut depth based on a 20 mm rut depths in major roads – paved strain criterion related to 100 mm rut depths in mine haul roads number of repetitions
Embankment Self weight settlement 0.1% height of embankment Drainage Total settlement Varies with crossfall. 100 to 500 mm
• The immediate settlement is calculated using elastic theory. • Consolidation settlements occur with time as water is expelled from the soil.
