In the absence of plate load tests, estimated values of kl and hence ks are used. The values suggested by Terzaghi for k1 (converted into S.I. units) are given in Table 14.1.
14.5 PROPORTIONING OF CANTILEVER FOOTING Strap or cantilever footings are designed on the basis of the following assumptions:
1. The strap is infinitely stiff. It serves to transfer the column loads to the soil with equal and uniform soil pressure under both the footings.