The load from a continuous footing of width 2m, which may be considered to be strip load of considerable length, is 200kN. Determine the maximum principal stress at 1.5m depth below the footing, if the point lies (i) directly below the centre of the footing (ii) directly below the edge of the footing and (iii) 0.8m away from the edge of the foo

The load from a continuous footing of width 2m, which may be considered to be strip load of considerable length, is 200kN. Determine the maximum principal stress at 1.5m depth below the footing, if the point lies (i) directly below the centre of the footing (ii) directly below the edge of the footing and (iii) 0.8m away from the edge of the foo

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter11: Load And Resistance Factor Design (lrfd)

Section: Chapter Questions

Problem 11.1P: A continuous foundation is required in a soil where c=10kN/m2, =26, and =19.0kN/m3. The depth of the...

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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

The load from a continuous footing of width 2m, which may be considered to be strip load of
considerable length, is 200kN. Determine the maximum principal stress at 1.5m depth below the
footing, if the point lies (i) directly below the centre of the footing (ii) directly below the edge of
the footing and (iii) 0.8m away from the edge of the foo

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