A square column 439 mm x 439 mm rests on a square footing. The column supports a dead load of 1,040 kN and a live load of 928 kN. The soil bearing capacity is 326.12 kPa. The base of the footing is 2.16 m below the ground. Assume unit weight of concrete of 24 kN/m and unit weight of soil of 16.72 kN/m3. The footing has a thickness of 636 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Calculate the nominal one-way shear stress in MPa. Note: Present the width (B) in multiples of 100 mm.

A square column 439 mm x 439 mm rests on a square footing. The column supports a dead load of 1,040 kN and a live load of 928 kN. The soil bearing capacity is 326.12 kPa. The base of the footing is 2.16 m below the ground. Assume unit weight of concrete of 24 kN/m and unit weight of soil of 16.72 kN/m3. The footing has a thickness of 636 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Calculate the nominal one-way shear stress in MPa. Note: Present the width (B) in multiples of 100 mm.

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 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 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/m and unit weight of soil of 17.47 kN/m. 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 Note: Present the width (B) in multiples of 100 mm.
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 square column 422 mm x 422 mm rests on a square footing. The column supports a dead load of 1,014 kN and a live load of 869 kN. The soil bearing capacity is 343.53 kPa. The base of the footing is 1.58 m below the ground. Assume unit weight of concrete of 24 kN/m and unit weight of soil of 16.73 kN/m. The footing has a thickness of 621 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Use fc' = 27.8 %3D MPa, fy 248 MPa. Calculate the number of required number of 16 mm o bars
A strap footing consists of two footings connected by strap beam. Allowable soil pressure is 450 kPa. Footing thickness is 600mm and the bottom of the footing is 1.5m below the ground. Assume soil weight to be 19 Kn/m3 and concrete weight to be 24 Kn/m³. Use f'c = 20.7 Mpa and fy = 414 Mpa. Use 1.2DL + 1.6LL. gog = galow - footing weight – soil weight. DL = 275 kN LL = 400 kN DL = 600 kN LL = 500 kN 4.8 m 400 x 400 column 400 x 400 column 1.2 m 1.2 m a) Calculate the footing dimensions. (Size is in multiples of 100 mm) b) Draw the Shear and Moment Diagram on the Longitudinal Direction. Show the maximum shear and moment.
A square column 449 mm x 449 mm rests on a square footing. The column supports a dead load of 1,039 kN and a live load of 830 kN. The soil bearing capacity is 254.26 kPa. The base of the footing is 1.57 m below the ground. Assume unit weight of concrete of 24 kN/m3 and unit weight of soil of 16.6 kN/m3. The footing has a thickness of 597 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Use fc’ = 24.4 MPa, fy = 248 MPa. Calculate the number of required number of 16 mm ϕ bars Note: Present the width (B) in multiples of 100 mm.
A square column 439 mm x 439 mm rests on a square footing. The column supports a dead load of 1,040 kN and a live load of 928 kN. The soil bearing capacity is 326.12 kPa. The base of the footing is 2.16 m below the ground. Assume unit weight of concrete of 24 kN/m³ and unit weight of soil of 16.72 kN/m³. The footing has a thickness of 636 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Calculate the nominal one-way shear stress in MPa.
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
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)
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 square column footing is to support a 500 mm square tied column that carries a dead load 1000 KN and a live load of 810 KN, the column is reinforced with 8 – 25 mm bars. The base of the footing is 1.50 m below the natural grade where the allowable soil pressure is 235 Kpa. The soil above the footing has a weight of 15.6 kn / cu.m. Assume fy = 27.5 Mpa, fc = 27.5 Mpa, and unit weight of concrete as 23.50 kn/cu.m, design the footing. Use 25 mm main bars.
A circular footing with a 1.5 m diameter is to be constructed 1.2 m below the ground surface. Thesubsoil consists of a uniform deposit of dense soil having the following strength parameters.Angle of internal friction = 25o, Nc = 24.1 ; Nq =13.1 ; N = 9.1Unconfined compressive strength = 96 kN/m2Unit weight of soil = 20.12 kN/m3The ground water table is at great depth and its effect can be ignored.a) Compute the Ultimate bearing capacity of the soil.b) Compute the gross allowable bearing capacity of the soil using a factor of safety of 3.c) Compute the allowable load the footing could carry