A continuous strip footing is to be located concentrically under a 300 mm wall that delivers service loads D = 360 kN/m and L= 220 kN/m to the top of the footing. The bottom of the footing will be 1.2 m below the final ground surface. The soil has a density of 20Kn/m3 and allowable bearing capacity of 280 Kn/m2. Materials strengths are fc’ =21 MPa and fy = 276 MPa.  *Give an on-scale schematic structural detail

Q: a. A column 425 mm x 425 mm carries a characteristic axial load of 800 kN dead and 300KN imposed. A…

A: Load on Column = 800 kN + 300 kN = 1100 kN Dead Weight of footing = 2.8*2.8*0.5*24 = 94.08 kN Total…

Q: 1) A footing whose one side spans 4.2m carries a 520 kN dead load and 640kN live load from a…

A: Answer  (1) Calculation of Dimension of the footing We know that Area of footing is given by A = Pqe…

Q: A 3.2 m square footing is proposed to be used to support a 373 mm x 605 mm RC column loaded with 637…

A: Given data:- Square footing size = 3.2m x 3.2m column size = 373mm x 605mm Dead Load = 637 kN Live…

Q: Question 1 Design an isolated footing to support an interior column 35 cm x 35 cm in cross section…

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Q: Design a square spread footing to support an edge column 460mm x 460mm in dimension. The allowable…

A: Given: column dimension = 460mm x 460 mm Allowable soil pressure = 478.5 kPa = 478.55 kN/m2 fc = 21…

Q: What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn)

A: Two way shear or punching shear is a failure mechanism in members such as slabs and footings under…

Q: A strip footing is resting on the ground surface of a pure clay bed having an undrained cohesion c.…

A: given- Df=0footing is on surface,

Q: What is the size of the footing required in mm?

A: The values given in the question are as follows Size of column=500 mm x 395 mm Dead load on…

Q: A square footing of size 2.5 m x 2.5 m is placed 1.0 m below the ground surface on a cohesionless…

A: A square footing of size 2.5 m × 2.5 m is placed 1 m below the ground surface. The groundwater table…

Q: A square footing is required to support a column of dimensions 450 X 450 mm. carrying 1000KN dead…

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Q: A column load of 72 kips is applied to the 6 ft by 8 ft rectangular concrete footing shown below.…

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Q: Bearing Capacity A strip footing is resting on the ground surface of a pure clay bed having an…

A: Given- Depth of footing d=0 (since footing on ground surface) Pure clay. Undrained cohesion = Cu. It…

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: A square footing is to be designed to carry a total axial load of 5000kg. The bottom of the footing…

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Q: en the two layers of the bars.

A: Given Data:Square footing size = 4.31m×4.31mColumn size = 331×361mmDead load = 586kNLive load =…

Q: A rectangular combined footing 8 ft * 20 ft is founded at a depth of 6 ft on a normally…

A: B = 8ft. D = 20ft. B' = 6ft Zh = 28 ft. qc = 50tsf

Q: A 10ft x 8ft foundation is set 4 feet below grade in the geotechnical setting provided in the above…

A: The given data is: B=8 ft L=10 ft Q=420 kips Calculating increase in stress at 15 ft below the…

Q: 3m 75 KEN m Im The footing plan is shown loaded uniformly in a rectangular area. What is the value…

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Q: Design a square pad footing with an overall depth of 600mm, cover to the reinforcements 50mm with…

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Q: a square footing with a size of 10 ft by 10 ft is located 8ft below the ground surface. the subsoil…

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Q: Design a square spread footing to support an edge column 460mm x 460mm in  dimension. The allowable…

A: Answer  Let us assume a thickness of footing say t = 1000 mm (large loads less than 1000 mm are not…

Q: A 2.90 meter square isolated footing with thickness of 650 mm is to carry a concentric load of 1200…

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Q: A 60 kip column is supported on a square footing with a length and base of 4 ft. Using the 2:1…

A: Given Load 60 kipWidth 4 ftDepth 5 ft2:1 methodTo find out Increase in stress

Q: A footing supporting a 2 ft x 2 ft column load carring 550 kips (dead load) and 200 kips (live…

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Q: Question 3. A strip footing is to be used in a clay soil in which the imposed load is 1 MN/m length.…

A: Cohesion , Angle of Internal friction , Unit weight ,

Q: (5) There is a strip footing with a width of 2 m and a buried depth of 1.5 m. The foundation soil is…

A: The Ultimate Bearing capacity is calculated by Terzaghi theory.

Q: to be constructed on able is at depth 15 pacity and the colum

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Q: A 5 * 7 ft footing is founded at a depth of 2 ft and supports a vertical load of 80 k and a moment…

A: Solution Given Data Foundation Dimension= 5*7 ft Vertical load= 80 k Moment load in the B Direction=…

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

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Q: A 4.0 m square footing is proposed to be used to support a 766 mm x 766 mm RC column loaded with 550…

A: In sloped and stepped footing, the effective cross section in compression shall be limited by the…

Q: a square footing is designed to support a 300-mm x 400-mm concrete column that sustains an axial…

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Q: A 3.5 m square footing is proposed to be used to support a 328 mm x 328 mm RC column loaded with 815…

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Q: A 3.4 m square footing is proposed to be used to support a 353 mm x 630 mm RC column loaded with 634…

A:

Q: A 3.4 m square footing is proposed to be used to support a 353 mm x 630 mm RC column loaded with 634…

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Q: A 3.3 m square footing is proposed to be used to support a 435 mm x 435 mm RC column loaded with 585…

A:

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.