A 1.5 m x 2.0 m rectangular foundation is placed at 1.0 m depth in sand where angle (prime) phi = 40 and gamma = 18.5 kN/m3. Bedrock is present at 1.0 m below the foundation. Using Eq. (7.3), determine the ultimate bearing capacity of the foundation. RECTANGULAR FOUNDATION ON GRANULAR SOIL Neglecting the depth factors, the ultimate bearing capacity of rough circular and rectangular foundations on a sand layer (c' = 0) with a rough rigid base located at a shallow depth can be given as 9.=qNF+yBNF (7.3)