I am designing a raft/slab foundation on grade for a G+1 light gauge steel hospital building in SAFE software. The soil bearing capacity is 50 KN/m2 and soil is soft clay soil but to analyze this foundation in SAFE I need to know the subgrade modulus “K” value so any one can suggest the conservative K value range for this type of soil and bearing capacity????
One thing I would like to shear that I am planning to replace the existing soil with new special granular compacted material of 30 cm thick layer for soil improvement.
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