A circular footing having a diameter of 2.5 m is supported by a soil (dense sand) with the following properties: O = 20° c = 50 kPa Y = 18 kN/m3 Ysat = 20 kN/m3 The bottom of the footing is 1.5 m below the ground surface. GWT is located at the bottom of the footing. Using Terzaghi's equation, determine the net allowable bearing capacity with factor of safety with respect to shear failure of 3.0. Use Yw = 9.81 kN/m3.

A circular footing having a diameter of 2.5 m is supported by a soil (dense sand) with the following properties: O = 20° c = 50 kPa Y = 18 kN/m3 Ysat = 20 kN/m3 The bottom of the footing is 1.5 m below the ground surface. GWT is located at the bottom of the footing. Using Terzaghi's equation, determine the net allowable bearing capacity with factor of safety with respect to shear failure of 3.0. Use Yw = 9.81 kN/m3.

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

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Concept explainers

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

Question

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A circular footing having a diameter of 2.5 m is supported by a soil (dense sand) with the following
properties:
O = 20°
C = 50 kPa
Y = 18 kN/m3
• Ysat = 20 kN/m³
%3D
%3D
The bottom of the footing is 1.5 m below the ground surface. GWT is located at the bottom of the
footing. Using Terzaghi's equation, determine the net allowable bearing capacity with factor of safety
with respect to shear failure of 3.0. Use Yw= 9.81 kN/m3.

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