A footing 2.25 x 2.25 m is located at a depth of 1.5 m in a sand, the shear strength parameters to be used in design being c' = 0 and ϕ' = 38˚. Determine the ultimate bearing capacity: (a) if the water table is well below foundation level and (b) if the water table is at the surface. The unit weight of the sand above the water table is 18 kN/m^3; the saturated unit weight is 20 kN/m^3. Note: Use the equations to solve for Nc, Nq and Nγ.
A footing 2.25 x 2.25 m is located at a depth of 1.5 m in a sand, the shear strength parameters to be used in design being c' = 0 and ϕ' = 38˚. Determine the ultimate bearing capacity: (a) if the water table is well below foundation level and (b) if the water table is at the surface. The unit weight of the sand above the water table is 18 kN/m^3; the saturated unit weight is 20 kN/m^3. Note: Use the equations to solve for Nc, Nq and Nγ.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A footing 2.25 x 2.25 m is located at a depth of 1.5 m in a sand, the shear strength parameters to be used in design being c' = 0 and ϕ' = 38˚. Determine the ultimate bearing capacity:
(a) if the water table is well below foundation level and
(b) if the water table is at the surface.
The unit weight of the sand above the water table is 18 kN/m^3;
the saturated unit weight is 20 kN/m^3.
Note: Use the equations to solve for Nc, Nq and Nγ.
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