Foundation Design: Principles and Practices (3rd Edition)
3rd Edition
ISBN: 9780133411898
Author: Donald P. Coduto, William A. Kitch, Man-chu Ronald Yeung
Publisher: PEARSON
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Chapter 7, Problem 7.11QPP
A bearing wall carries a factored ultimate vertical load Of 67 k/ft. It is to be supported on a 13 in deep continuous footing. The underlying soils are medium sands with
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Determine the width needed for a wall footing to support loads: D = 263 KN/m and L = 176 KN/m. In addition, a moment of 53 KN m must be transferred from the column to the footing. Assume the footing is 450 mm. thick, its base is 1.5 m below the final grade, and qa = 192 KPa.
A 200 mm wide concrete block wall carries a vertical dead load of 120 kN/m and a verticallive load of 88 kN/m. The expected sustained load for serviceability is 160 kN/m. The wallis to be supported on a continuous spread footing that is to be founded at a depth of at least500 mm below the ground surface. The geotechnical design for the project was done usingASD and determined the allowable bearing pressure based on bearing capacity as 310 kPa andthe allowable bearing pressure to meet settlement requirements as 155 kPa. The groundwatertable is at a depth of 10 m. Develop a structural design for this footing using f′
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Chapter 7 Solutions
Foundation Design: Principles and Practices (3rd Edition)
Ch. 7 - List the three types of bearing capacity failures...Ch. 7 - A 1.2 m square, 0.4 m deep spread footing is...Ch. 7 - A 5 ft wide, 8 ft long, 2 ft deep spread footing...Ch. 7 - A column carrying a vertical downward unfactored...Ch. 7 - A column carrying a vertical downward ultimate...Ch. 7 - A 120 ft diameter cylindrical tank with an empty...Ch. 7 - A 1.5 m wide, 2.5 m long, 0.5 m deep spread...Ch. 7 - A 5 ft wide, 8 ft long, 2 ft deep spread footing...Ch. 7 - A bearing wall carries a total unfactored load 220...Ch. 7 - After the footing in Problem 7.9 was built, the...
Ch. 7 - A bearing wall carries a factored ultimate...Ch. 7 - A 5 ft wide, 8 ft long, 3 ft deep footing supports...Ch. 7 - Prob. 7.13QPPCh. 7 - A spread footing supported on a sandy soil has...Ch. 7 - A certain column carries a vertical downward load...Ch. 7 - A building column carries a factored ultimate...Ch. 7 - A 3 ft square footing is founded at a depth of 2.5...Ch. 7 - A building column carries factored ultimate loads...Ch. 7 - Develop a spread sheet to compute allowable total...Ch. 7 - A certain column carries a vertical downward load...Ch. 7 - Repeat Problem 7.20 using LRFD assuming the...Ch. 7 - Conduct a bearing capacity analysis on the Fargo...Ch. 7 - Three columns, A, B, and C, are collinear, 500 mm...Ch. 7 - Two columns, A and B, are to be built 6 ft 0 in...Ch. 7 - In May 1970, a 70 ft tall, 20 ft diameter concrete...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- A square footing (B B) must carry a gross allowable load of 1160 kN. The base of the footing is to be located at a depth of 2 m below the ground surface. If the required factor of safety is 4.5, determine the size of the footing. Use Terzaghis bearing capacity factors and assume general shear failure of soil. Given: = 17 kN/m3, c = 48 kN/m2, =31.arrow_forwardRedo Problem 6.2 using the general bearing capacity equation [Eq. (6.28)]. A 5.0 ft wide square footing is placed at 3.0 ft depth within the ground where c = 200 lb/ft2, = 25, and = 115.0 lb/ft3. Determine the ultimate bearing capacity of the footing using Terzaghis bearing capacity equation and the bearing capacity factors from Table 6.1. What is the maximum column load that can be allowed with a factor of safety of 3.0?arrow_forwardRefer to Problem 16.1. If a square footing with dimension 2 m 2 m is used instead of the wall footing, what would be the allowable bearing capacity? 16.1 A continuous footing is shown in Figure 16.17. Using Terzaghis bearing capacity factors, determine the gross allowable load per unit area (qall) that the footing can carry. Assume general shear failure. Given: = 19 kN/m3, c = 31kN/m2, =28, Df = 1.5 m, B = 2 m, and factor of safety = 3.5. Figure 16.17arrow_forward
- For the following footing, determine the allowable load (Qu) being Fs=1.5arrow_forwarda) A square footing placed at a depth of 1 m is required to carry a load of 1000 kN. Find the required size of footing given the following data. C = 10 kPa, ϕ = 38o, γ = 19 kN/m3, Nc = 61.35, Nq = 48.93, Nγ= 74.03 and F = 3.Assume water table is at the base of footing.arrow_forwardThe square footing shown below must be designed to carry a 294 kN load. Use Nc = 57.8 ; Nq = 41.4 and N? = 41.1. a.) Using Terzaghi's capacity formula, determine the width B of the square footing with a factor of safety of 3.0arrow_forward
- A 1.5 m square footing is founded at a depth of 1m (equal to the foundation thickness) in fine-grained soil with the following properties: ?dry = 20 kN/m3; ?sat = 22 kN/m3; ?u,k = 70 kPa; ?k′ = 10 kPa; ?k′ = 30° The load on the footing is vertical but has a maximum eccentricity (?) of 250 mm from one axis (Hint: B- = B − 2e). If the water table is at the foundation level, determine the design bearing resistance of the footing for a. short-term condition b. long-term conditionarrow_forwardSolve Problem 2 using the general bearing capacity equation Problem 2) A 1.5 m wide square footing is placed at 1 m depth within the ground where c = 10 kN/m², varphi' = 25 ^ 0 and 18 kN/m³. Determine the ultimate bearing capacity of the = footing using Terzaghi's bearing capacity equation. What is the maximum column load that can be allowed with a factor of safety of 3.0?arrow_forwardA 460 mm reinforced concrete interior spiral column carries service loads of 1025 kN dead load and 715 kN live load (Figure 3). The column rest on a square spread footing 2.75 m x 2.75 m in dimension. The net ultimate soil pressure at the base of the footing is 314 kPa, f’c =21 MPa, fy = 345 MPa, clear cover is 75 mm and 25 mm-diameter bars, the allowable soil pressure is 250 kPa? Unit weight of soil is 17kN/m3 ; unit weight of concrete is 23.5 kN/m3. The underside of footing is 1.50m below the natural grade linearrow_forward
- If the footing 3.5m×3.5m, What is the critical factored shear force considering wide beam action? And If the footing is 3.5m×3.5m, What is the design shear strength of footing considering beam action?arrow_forwardWrong attempt will be downvoted Three parallel strip footings 3m wide each and 5m apart center to center transmit line loads of 300, 200, and 100 kN/m respectively. Calculate the vertical stress due to the combined loads beneath the center of each footing at a depth of 4m below the base. Assume footings are placed at a depth of 2m below the ground surface. Use Boussinesq's Method for line loads.arrow_forwardA building column carries factored ultimate loads of 5,500 kN vertical and 1,200 kN horizontal.The column is founded on a 1.5 m square footing at a depth of 1.7 m. The soil is a cohesionless sandwith f′ = 32° and g = 18.8 kN/m3 . The water table is at a depth of 6 m. Using LRFD with anactive earth pressure load factor of 1.5, determine if this footing satisfies requirements for sliding.arrow_forward
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