SOIL & FOUNDATION TYPES:

Well graded gravel and sand that are confined and drained have a safe bearing capacity of 3,000 - 12,000 PSF. Silts and clays have lower safe bearing capacity of 1,000 – 4,000 PSF. Role of Foundations: Transfer the building load to the ground. Anchor building against wind and seismic load. Isolate building from frost heaving. ................
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