43. A footing 3 m x 3 m (10 ft x 10 ft) is designed to carry a 200-tonne (220-ton) load. Find the stress level at 0, 5, 10, 15, and 20 ft using the 2:1, Boussinesq, and Westergaard methods. Compare the answers obtained. Which would likely be used for checking the adequacy of the soil? Explain.

43. A footing 3 m x 3 m (10 ft x 10 ft) is designed to carry a 200-tonne (220-ton) load. Find the stress level at 0, 5, 10, 15, and 20 ft using the 2:1, Boussinesq, and Westergaard methods. Compare the answers obtained. Which would likely be used for checking the adequacy of the soil? Explain.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter17: Settlement Of Shallow Foundations

Section: Chapter Questions

Problem 17.2P: A 3 m 4 m footing, founded at 2 m depth in a clay, applies a net pressure of 200 kN/m2. The bed...

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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

43. A footing 3 m x 3 m (10 ft x 10 ft) is designed to
carry a 200-tonne (220-ton) load. Find the stress level
at 0, 5, 10, 15, and 20 ft using the 2:1, Boussinesq,
and Westergaard methods. Compare the answers
obtained. Which would likely be used for checking
the adequacy of the soil? Explain.

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