I wouldn't recommend compressible backfill because there may be consequences of ground movement beneath/adjacent to the building foundations.
Perhaps Geo69 could confirm the proposals for the building foundations and the type of founding soils? The soils beneath the building would also...
Steveyeung stated that he was hoping to reduce the deflections by allowing for a reaction, which had previously been neglected, hence my earlier response. K0=1 when the friction angle is zero, i.e. in the case of a clay soil in the undrained condition. Given that the reaction had been neglected...
steveyeung
With respect to lateral pressures you could refer to the 'lateral earth pressure' entry under 'earth retention engineering'. You will find that for the case where lateral deflections are not desirable you should use K0 = 1. (Kay nought equals one)i.e. lateral earth pressure 'at...
Clearly, with regard to bearing capacity, footings within the basement have a reduced depth of overburden, which no longer contributes to the bearing resistance, hence the foundation depth should be taken from basement level. Since failure would occur in the weakest direction then foundations...
