A concrete column carries an axial load of 450 kN and a bending moment of 60 kN-m at its base. An isolated footing of size 2 m x 3 m, side 3m along the plane of the bending moment, is provided under the column. Centres of gravity of column and footing coincide. The net maximum and the minimum pressures in kN/m2 on soil under the footing are respectively

Q: a) Find the allowable load on the foundation by Terzaghi method, assuming a general shear failu with…

A: AnswerNet allowable load = Qall Cohesion C =13 kpaDry Unit weight of soil () =17 Kn/m3Saturated Unit…

Q: H.W./2 A rectangular footing of 2.4 m x 3.5 m size is to be constructed at 1.5 m below ground level…

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Q: A rectangular footing 2 m x 3 m carries a column load of 600 kN a at depth of 1 m. The footing rests…

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Q: A strip footing 1.5 m wide is located at a depth of 0.75 m (equal to the foundation thickness) in a…

A: Width of strip footing = 1.5m , Depth = 0.75m = Thickness of foundation , Unit weight of sand =…

Q: 1) Find the stress beneath Point A of the 40 ft by 80 ft. L-Shaped flexible mat foundation at depth…

A: Given Data: Size of Mat is 40 ft x 80 ft. Mat loading is w=200 psf. Depth Z=20 ft.

Q: Calculate the factor of safety of a square footing with a moment in one axis. Use Terzaghi’s…

A: Terzaghi's Bearing Capacity Theory : According to Terzaghi's Bearing Capacity Theory, a foundation…

Q: A square footing carries an allowable load of 59,130 kg including its own weight. The bottom of the…

A: Given data: y = 1846 kg/m3  C = 1605 kg/m2  Nc = 35 Nq = 19 ysat = 1965 kg/m3  Assuming  Nγ=16

Q: Q8) For the rectangular footing shown in Fig. (8), find the footing dimensions (BxL) for which the…

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Q: A 5 ft wide, 8 ft long, 3 ft deep footing supports a downward load of 200 k and a horizontalshear…

A: Solution Given Data A 5 ft wide, 8 ft long, 3 ft deep footing

Q: A square footing 3 x 2 m carries a column load of 3500 kN resting 0.60 m below the ground on the…

A: To Find :- Preconsolidation pressure Total effective stress at center of clay Settlement of clay

Q: SITUATION: A rectangular footing, a=3m, b32m, has a thickness of 0.40m. If P-800KN is acting at…

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Q: A footing 2.5 × 2.5 m carries a pressure of 400 kPa at a depth of 1m in sand. The saturated unit…

A: Given; A footing 2.5 × 2.5 m pressure of 400 kPa at a depth of 1m The saturated unit weight of the…

Q: A rectangular footing of size 3 x 2 m is founded at a depth of 1.5 m in a clay stratum of very stiff…

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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.