7.1 Design Information
For the satisfactory design of foundations, the following information is necessary:
a) Type and condition of the soil or rock to which the foundation transfers the loads;
b) General layout of the columns and load-bearing walls showing the estimated loads, including moments and torques due to various loads (dead load, imposed load, wind load, seismic load) coming on the foundation units;
c) Allowable bearing pressure of the soils;
d) Changes in ground water level, drainage and flooding conditions and also the chemical conditions of the subsoil water, particularly with respect to its sulphate content;
e) Behaviour of the buildings, topography and environment/surroundings adjacent to the site, the type and depths of foundations and the bearing pressure assumed; and
f) Seismic zone of the region.