A square footing will carry a design load of 3500kN. The footing is founded on a soil having a saturated unit weight of 21.5 kN/m3 and a cohesion of 45 kPa. The embedment depth of the footing is 1.7m and the water table rises to the ground surface. Using Terzaghi's Bearing capacity formula, what must be the perimeter of the footing's cross section so that the gross allowable soil pressure will not exceed with a factor of safety of 3? Use the following Terzaghi's bearing capacity factors: Nc-25.1, Nq=12.7, and Ny = 9.7. Assume a general shear failure.

Q: A rectangular footing, with a plan area of 1-4mx2·0m is to be placed 2m below the ground surface.…

A: Given Information:

Q: Determine the safe load that may be applied to the footing

A:

Q: a square footing is to be constructed on a uniform thick deposit of clay with a unconfined…

A:

Q: 5- A 1.5x1.5 m square footing is constructed in a cohesive soil at depth 1.2 m the ultimate bearing…

A: Square footing 1.5×1.5m Ultimate bearing capacity = 728 KN/ m2Depth of foundation = 1.2 me = 0.18 m…

Q: Determine the wall loading that can be carried by a long footing 1.2 m wide and located 1.5 m below…

A: Solution:- Given data,Long footing (B)=1.2mDf=1.5mSoil cohesion( C)=62kN/m3Angle of internal…

Q: A 3.5 m square footing is proposed to be used to support a 521 mm x 376 mm RC column loaded with 675…

A: Given data:- Square footing size = 3.5m x 3.5m column size = 521 mm x 376 mm Dead Load = 675 kN Live…

Q: footing shown below with the groundwater table at position . and C 2 ft 4 ft 1it B

A: Using Terzaghi's equation of ultimate bearing capacity, qu=CNC+γDfNq+γBNγ2where, NC, Nq and Nγ are…

Q: A certain column carries a vertical downward load of 448.0 k. It is to be supported on a 3.0-ft deep…

A:

Q: A 1.4-m wide, 2.5-m long, 0.5-m deep spread footing is underlain by a soil with c' = 10.0 kPa, o' =…

A: 1) For Strap footing best suited method is  Terzaghis method.

Q: A combined footing is proposed to support two columns, C1 and C2, with loads equal to 2000 kN and…

A: (i) Soil Bearing Capacity:The bearing capacity of the soil can be calculated using the following…

Q: 2. Design the dimension of a square footing to carry a column load 1800 kN. The base of the footing…

A: To design the footing, we will proceed by determining the ultimate bearing capacity of the footing.…

Q: 5- A 1.5x1.5 m square footing is constructed in a cohesive soil at depth 1.2 m the ultimate bearing…

A: Square footing 1.5×1.5m Ultimate bearing capacity = 728 KN/m2Depth of foundation = 1.2 me = 0.18 m

Q: 5-A 1.5x1.5 m square footing is constructed in a cohesive soil at depth 1.2 m the ultimate bearing…

A: b = 1.5 mQu = 728 kN/m2 e = 0.18 m

Q: 5-A 1.5x1.5 m square footing is constructed in a cohesive soil at depth 1.2 m the ultimate bearing…

A: B = 1.5 m e = 0.18 mQu = 728 kN/m2

Q: A 10 foot diameter circular footing is to be constructed and will have a net bearing pressure of…

A: Footing is the subgrade of the structure which is very useful to transfer the load and also to give…

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.