A square footing is to be designed to carry a total axial load of 5000kg. The bottom of the footing is 2.8m below the ground surface, and the groundwater table is located at the bottom of the footing. Take PDRY = 1860kg/m3 and PSAT = 1950kg/m3, c = 1600kg/m2, Ø = 30degrees. Use the given Chart for the 90 80 70 determination of the bearing capacity factors. a. Determine the dimension of the footing using a factor of safety of 2. b. Compute the ultimate bearing capacity of the soil in kPa. c. Compute the net allowable bearing capacity of the soil. 60 Ng Nr 50 40 30 20 10 10 20 30 40 50 Friction Angle Ne, Nq, Nr TILLL|||||||||TI

A square footing is to be designed to carry a total axial load of 5000kg. The bottom of the footing is 2.8m below the ground surface, and the groundwater table is located at the bottom of the footing. Take PDRY = 1860kg/m3 and PSAT = 1950kg/m3, c = 1600kg/m2, Ø = 30degrees. Use the given Chart for the 90 80 70 determination of the bearing capacity factors. a. Determine the dimension of the footing using a factor of safety of 2. b. Compute the ultimate bearing capacity of the soil in kPa. c. Compute the net allowable bearing capacity of the soil. 60 Ng Nr 50 40 30 20 10 10 20 30 40 50 Friction Angle Ne, Nq, Nr TILLL|||||||||TI

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Subject:( Geotechnical and foundation engineering )
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
depth "z" = 16ft
Calculate the ultimate bearing capacity considering the following: A strip footing, 2 meters wide A square footing 3m by 3m A circular footing 3m in diameter. All footings are located at the ground surface and groundwater level is at the ground surface. The soil is coarse grained with saturated unit weight of 19.8 kn/m3 and angle of internal friction of 25 degrees.
Please explain and number steps
A 3.4 m square footing is proposed to be used to support a 353 mm x 630 mm RC column loaded with 634 kN dead load and 853 kN live load. The bottom of the footing is 2.3 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 431 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. Note: For two-way shear, use an effective depth measured from the top of the footing until the top of the bottom-most bar (d;) What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn) Answer is 1.5881 (Complete Solution)
A 6ft x 6ft foundation is subjected to an axial load Q = 225k and a moment M = 100k ft. The depth of footing is 5ft. The soil unit wt is 125pcf, phi = 32deg and c=1000psf Find: qmin qmax e B' L' qult using the general BC equation
B 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 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
A 3.3 m square footing is proposed to be used to support a 435 mm x 435 mm RC column loaded with 585 kN dead load and 643 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 290 kPa. The thickness of the footing is 459 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. Answer in multiples of 1
A 6ft x 6ft foundation is subjected to an axial load Q = 225k and a moment M = 100k ft. The depth of footing is 5ft. The soil unit wt is 125pcf, phi = 32deg and c=1000psf Find: 9min qmax e L' qult using the general BC equation
Answer the following problem and show your solution 1. A 400 mm concrete wall supports a DL= 200 kN and LL =146 kN. The allowable bearing pressure is 216 kPa at the level bottom of the footing which is H=1.2m below the grade. Weight of concrete is 24 kN/m^3 and that of soil is 16kN/m^3. Thickness of footing is 300mm with an effective depth of 225mm. use load combination of U=1.4DL+1.7LL f'c-28 MPa, fy=248MPa. Use 28 mm diameter reinforcing bars. Normal weight concrete λ=1.0 a. Determine the effective soil pressure b. Find the width of the wall footing c. Compute the spacing of 28mm diameter steel reinforcement