A square column 363 mm x 363 mm rests on a square footing. The column supports adead load of 1,290 kN and a live load of 814 kN. The soil bearing capacity is 337.72kPa. The base of the footing is 1.88 m below the ground. Assume unit weight ofconcrete of 24 kN/m and unit weight of soil of 17.47 kN/m. The footing has athickness of 562 mm and the centroid of the main bars is 100 mm from the bottom ofthe footing. Use fc' 25.86 MPa, fy 248 MPa.Calculate the number of required number of 16 mm o barsNote: Present the width (B) in multiples of 100 mm.

A square column 363 mm x 363 mm rests on a square footing. The column supports a dead load of 1,290 kN and a live load of 814 kN. The soil bearing capacity is 337.72 kPa. The base of the footing is 1.88 m below the ground. Assume unit weight of concrete of 24 kN/m3 and unit weight of soil of 17.47 kN/m³. The footing has a thickness of 562 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Use fc' = 25.86 MPa, fy 248 MPa. Calculate the number of required number of 16 mm o bars

A square column 363 mm x 363 mm rests on a square footing. The column supports a dead load of 1,290 kN and a live load of 814 kN. The soil bearing capacity is 337.72 kPa. The base of the footing is 1.88 m below the ground. Assume unit weight of concrete of 24 kN/m3 and unit weight of soil of 17.47 kN/m³. The footing has a thickness of 562 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Use fc' = 25.86 MPa, fy 248 MPa. Calculate the number of required number of 16 mm o bars

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Shallow Foundations-bearing Capacity

Section: Chapter Questions

Problem 16.19CTP: A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a...

See similar textbooks

Similar questions

A square column 369 mm x 369 mm rests on a square footing. The column supports a dead load of 1,289 kN and a live load of 739 kN. The soil bearing capacity is 336[85 kPa. The base of the footing is 1.77 m below the ground. Assume unit weight of concrete of 24 kN/m and unit weight of soil of 17.77 kN/m. The footing has a thickness of 593 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Calculate the nominal punching shear stress in MPa. Note: Present the width (B) in multiples of 100 mm.
A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a column load Q. The depth of the footing is 1.0 m. The soil parameters are: c = 0, =26, = 19 kN/m3, cu = 60 kN/m2 (=0 condition). Determine the maximum possible value for Q, considering short-term and long-term stability of the footing.
A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a column load Q. The depth of the footing is 1.0 m. The soil parameters are: c = 0, = 26, = 19 kN/m3, and cu = 60 kN/m2. Determine the maximum possible value for Q, considering short-term and long-term stability of the footing.
A rectangular footing 3m by 4m is founded 1.2m below the ground surface for which the unit weight of soil is 17.8kN/m3. The cohesion strength is 10kPa and the angle of internal friction is 20degrees. Under the condition of general failure, evaluate the contribution from the following to the ultimate soil bearing capacity in kPa. The ground water table is at a level that does not affect the unit weight of the soil. Use Terzaghi’s bearing capacity factor. For Ø=20degrees: Nc = 17.69, Nq = 7.44, Ny = 3.64. 23. Due to Cohesion Strength Due to soil overburden Due to footing dimension
A 3.5 m square footing is proposed to be used to support a 328 mm x 328 mm RC column loaded with 815 kN dead load and 770 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m³ and the allowable soil bearing pressure is 314 kPa. The thickness of the footing is 553 mm. f = 21 MPa and f = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m³ as the unit weight of concrete. Use an effective depth measured from the top of the footing until the center of the bottom-most bar (d1) Calculate the number of bars required in one direction. Answer is 15 (Complete Solution)
A 4.7 m square footing is proposed to be used to support a 398 mm x 398 mm RC column loaded with 860 kN dead load and 654 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m³ and the allowable soil bearing pressure is 285 kPa. The thickness of the footing is 552 mm. f = 21 MPa and fy = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m³ as the unit weight of concrete. Use an effective depth measured from the top of the footing until the center of the bottom-most bar Calculate the number of bars required in one direction. Provisions are given below for the minimum area of main reinforcements Reinforcement Type fy. MPa ima Nimist Deformed Bars < 420 MPa 0.0020A Deformed Bars and Welded Wire 2 420 MPa Reinforcement Greater of: 00018 x 420 0.0014A
You are to desigh a square footing having properties as given: Dimensions: B-2m a=0.6m b=1m c-0.4m Column toads: My P (kN) (kN- m) Dead Load 230 48 Live Load 120 28 Earthquake 25 220 Load Determine the maximum net soil pressure in kPa..
A 3.5 m square footing is proposed to be used to support a 328 mm x 328 mm RC column loaded with 815 kN dead load and 770 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 314 kPa. The thickness of the footing is 553 mm. f'c = 21 MPa and fy = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of concrete. Use an effective depth measured from the top of the footing until the center of the bottom-most bar (d1) Calculate the number of bars required in one direction.
A 3.6 m square footing is proposed to be used to support a 530 mm x 309 mm RC column loaded with 704 kN dead load and 530 kN live load. The bottom of the footing is 1.5 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 312 kPa. The thickness of the footing is 525 mm. f'.= 21 MPa and f, = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of %3D concrete. Note: For two-way shear, use an effective depth measured from the top of the footing until the top of the bottom-most bar (d3) What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn) Answer in 4 decimal places (1.6125, 1.5140, 0.8461, etc.)
A 4.7 m square footing is proposed to be used to support a 635 mm x 635 mm RC column loaded with 665 kN dead load and 843 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 331 kPa. The thickness of the footing is 462 mm. f'c = 21 MPa and fy = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m³ as the unit weight of concrete. Use an effective depth measured from the top of the footing until the center of the bottom-most bar Calculate the number of bars required in one direction. Provisions are given below for the minimum area of main reinforcements Reinforcement Type fy. MPa As.min. mm² Deformed Bars 420 MPa Reinforcement Greater of: 0.0018×420 f₂ 0.0014A -A₂
A 4.0 m square footing is proposed to be used to support a 766 mm x 766 mm RC column loaded with 550 kN dead load and 590 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m³ and the allowable soil bearing pressure is 307 kPa. The thickness of the footing is 563 mm. f'. = 21 MPa and fy = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of concrete. Use an effective depth measured from the top of the footing until the center of the bottom-most bar (d1) Calculate the number of bars required in one direction. You Answered Correct Answer 13
A 4.31 m square footing is proposed to be used to support a 331 mm x 361 mm RC column loaded with 586 kN dead load and 561 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 299 kPa. The thickness of the footing is 490 mm. f'c = 21 MPa and fy = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of concrete. What is the ratio of the Demand Shear Force and the Capacity in Punching shear? Use an effective depth located midway between the two layers of the bars.