A square footing which carries an axial load of 13000 kg has its bottom resting on a ground water table at a depth of 2.5 m from the ground surface. Nc = 35, Nq = 22, Nγ = 19. Take PDRY = 1910 kg/m3 and PSAT = 1600 kg/m3, c = 1800 kg/m2. a. Compute the required width of the footing using a factor of safety of 2. b. Compute the ultimate bearing capacity of the soil. c. Compute the net factor of safety.

A square footing which carries an axial load of 13000 kg has its bottom resting on a ground water table at a depth of 2.5 m from the ground surface. Nc = 35, Nq = 22, Nγ = 19. Take PDRY = 1910 kg/m3 and PSAT = 1600 kg/m3, c = 1800 kg/m2. a. Compute the required width of the footing using a factor of safety of 2. b. Compute the ultimate bearing capacity of the soil. c. Compute the net factor of safety.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Mat Foundations

Section: Chapter Questions

Problem 10.2P

See similar textbooks

Similar questions

A rectangular footing has a dimensions shown and is acted upon by a dead load of 722 kN and a live load of 620 kN. The column dimension is 326 x 662 mm where he shorter dimension is parallel to B The thickness of the footing is 408mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=3.1m and B=5.1m
A rectangular footing has dimensions shown and is acted upon by a dead load of 570.00 kN and a live load of 621.00 kN. The column dimension is 366x576 mm where the shorter dimension is parallel to B. The thickness of the footing is 476mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.5m and B=4.5m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in two- way shear. Answer is 0.9238 (Complete Solution)
A rectangular footing has dimensions shown and is acted upon by a dead load of 668.00 kN and a live load of 551.00 kN. The column dimension is 282x572 mm where the shorter dimension is parallel to B. The thickness of the footing is 564mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=3.3m and B=5.7m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in one- way shear. Consider critical case only. Answer is 0.6175 (Complete Solution)A
A rectangular footing has dimensions shown and is acted upon by a dead load of 1200 kN and a live load of 1600 kN. The column dimensions is 300x600 where the shorter dimension is parallel to B. The thickness of the footing is 500mm. f'c = 28 MPa and fy = 420 MPa for diameter 20mm bars. A = 2.4m and B = 4.2m Calculate the Following: A.) Critical Ultimate Shear Strength and Shear Force of the footing for beam shear action, kNB.) Critical wide beam nominal shear stress, MPaC.) Ultimate Shear Strength of the footing in punching shear action, kN Please answer it ASAP and correctly for upvotes.
A rectangular footing has dimensions shown and is acted upon by a dead load of 653 KN and a live load of 647 kN. The column dimension is 269x677 mm where the shorter dimension is parallel to B. The thickness of the footing is 442mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.9m and B=4.8m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in one-way shear. Consider critical case only.
A rectangular footing has dimensions shown and is acted upon by a dead load of 584 kN and a live load of 412 kN. The column dimension is 399x719 mm where the shorter dimension is parallel to B. The thickness of the footing is 696mm. fc=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.8m and B=5.7m Calculate the number of bars along the long direction
A square footing shown has the following details: Unit weight of soil = 15.28 kN/m3 Saturated unit weight of soil = 19.92 kN/m3 cohesion = 21.44 kPa %3D friction angle = 24 degrees %3D B = 2 meter Df = 2.45 meter P = 861 kN e/B = 0.12 --> one way eccentricity Calculate for the net allowable bearing capacity using FOS = 2.8. Use Meyerhof General Bearing Capacity Formula. D, B B Water table
3. A square footing that carries an axial load of 150000kg has its bottom resting on a ground water table at a depth of 2.5m from the ground surface. Take PDRY = 1860kg/m3 and PSAT = 1950kg/m3, c = 1600kg/m2, ø = 30degrees. Use the approximate formulas for the determination of the bearing capacity factors. a.Compute the required width of the footing using a factor of safety of 2. b.Compute the ultimate bearing capacity of the soil. c.Compute the net factor of safety. d.Compute the net soil pressure.
A square footing 1m x 1m in dimension has its bottom located 4m below the ground surface. The unit weight of soil is 18kN/m3 and has a cohesion of 20kPa. Nc = 37, Nq = 22, Ny = 19. Determine the net ultimate bearing capacity.
A square footing having a dimension of 2.5m x 2.5m is supported by a cohesionless soil with the following properties: ϕ = 32∘ γ = 18 kN/m3 γsat = 20 kN/m3 The bottom of the footing is 1.5m below the ground surface. Use FS = 3 and γw = 9.81 kN/m3. Apply the general bearing capacity equation. GWT is at the bottom of the footing and load is applied at an eccentricity of 250mm along one side. 1. Determine the effective short dimension, B' (in m). 2. Determine the effective long dimension, L' (in m). 3. Determine the ultimate bearing capacity (in kPa). 4. Determine the magnitude of the gross allowable load applied eccentrically (in kN).
A rectangular footing of breadth size 3 m and length 5 m is designed on CLAY at a depth of 1.5 m below the ground level to support a vertical load of 1200 kN. The unit weight of the soil is 19 kN/m³ and shear strength parameters are cu 65 kN/m² and θ =0°. Calculate factor of safety and take the appropriate bearing capacity coefficient Nc, Nq, and Nr, as 5.7, 1.0 and 0 respectively.
A rectangular footing has dimensions shown and is acted upon by a dead load of 382 kN and a live load of 536 kN. The column dimension is 307x560 mm where the shorter dimension is parallel to B. The thickness of the footing is 656mm. fc=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.6m and B=5.2m