Design an isolated rectangular footing: P(dead load) = 225 kN P(live load) = 130 kN Qa = 180 kPa Df = 1.5 m Unit wt. of concrete = 23.5 kN/m^3 Unit wt. of soil =17.2 kN/m^3 Bar diameter = 20 mm f`c = 20.7 MPa fy = 248 MPa Width of footing, B is limited to 2m only Column = 40 cm x 40 cm Assume height of footing = 350 mm (check adequacy, if failed - increase the depth) Use min. cover = 75 mm Determine the following: (a) Effective Soil Bearing Pressure, Qe (b) Footing Dimension, L (c) Ultimate Soil Bearing Pressure, Qu (d) Check for Shear Criteria (Beam She

Q: A proposed office building will include a 10 ft x10 ft square, 3 ft deep (the footing height is also…

A: Given data: Building area=10 ft*10 ft Depth of footing=3 ft Unit weight, γdry=115 pcf Frictional…

Q: A circular footing with a radius of r = 4.0 ft will be embedded D = 2 ft in uniform clay. The top of…

A: Given, Footing radius, r = 4 ft  Footing depth, D = 2 ft

Q: Using the following soil data (dense sand): γsoil = 18 kN/m3 γsub = 10 kN/m3 c = 12 kPa Nc = 17.69…

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Q: A footing 2.25 x 2.25m is located at a depth of 1.5 m in a sand, the shear streng parameters to be…

A: Given : Footing size = 2.25 X 2.25 m Depth = 1.5 m To Find : Ultimate bearing capacity : A) if the…

Q: A 414 mm square interior column carries a dead load of 955 kN and a live load of 888 kN. A…

A:

Q: 1- Given Data Footing = 3.25 ksi = 60 ksi = 2.7 ksf Column = 350 Kips = 250 Kips D L fy 40 in × 30…

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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: Q#3:…

A: The allowable safe bearing capacity is given by: Where,

Q: SITUATION: A square spread footing is to be designed to carry a 1560 kN Live Load and a Dead Load of…

A: The given problem is based on the preliminary sizing of the column.  Given data :  Live load= 1560…

Q: 5b) (P) = 75 k (shown below). The footing is 3 ft thick and flush with the ground surface. Assume x=…

A: Solution:- The given diagram is shown below,

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: The average correcte N60 = 7 in the effective zone for a square footing (1m x 1m) located at a depth…

A: If the soil support of the continuous foundation yields due to the load imposed by the foundation,…

Q: A square footing having a dimension of 4m has its bottom at a depth of 3.2m Trom the ground surface.…

A: Given data Dimension of footing= 4m depth of footing = 3.2m Specific gravity, Gs = 2.7 Void ratio, e…

Q: A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below grade. The…

A: Question is based on the footing which is proposed to design a which bottom of which is set at some…

Q: A rectangular column footing is to be designed to carry the following column loads: PDL = 850 kN MDL…

A: Column size 500* 500mPDL = 850 kNPLL = 690 kNMDL = 160 kN-mMLL = 190 kN-mL= 1.4Bf'c = 27.6 MPafy =…

Q: A strip footing is to be placed 2m below the surface or soil having a cohesion of 40 KPa, unit…

A: Given:- The depth of the footing to be placed = 2 m The cohesion of the soil = 40 kPa The unit…

Q: A building will have a factored column load of 300 kN. The column is to be supported on a square…

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Q: A square footing having a dimension of 4m has its bottom at a depth of 3.2m Trom the ground surface.…

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Q: Determine: 1. Allowable bearing capacity (qa) 2. Allowable wall load in lb/ft.

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Q: Q.6 A column 12" square with fe' = 5 ksi reinforced with 8 # 10 bars of fy= 60 ksi, supports a…

A: Column size =12"                             Reinforced with 8#10 bars…

Q: A continuous footing with a B = 7.5ft is constructed with a Df of 3ft in a soil with the following…

A: Consider the given data Consider the Tarzaghi Bearing capacity table

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.