Considering general shear failure , compute the gross allowable load of a rectangular footing 6m long by 1.25m wide using a load factor (FS) of 2.50. The depth of the bottom is 4.50 m below the ground surface. Cohesion of soil is 30 kPa, unit weight of soil is 19.20 kN/m3 and angle of friction is 10°.

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A:

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Q: Soil mechanics

A: Step 1:Step 2:Step 3:Step 4:

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.