A rigid footing with B = 3m and L = 4m carries a total load of P = 890kN as shown. A.) Determine the elastic settlement of the footing if the Poisson’s ratio (µs) of soil = 0,32, modulus of elasticity of soil Es = 15900kPa, Influence factor Ip = 0.88. B.) Compute the primary consolidation settlement of clay layer if it is normally consolidated. C.) Compute the total consolidation of the clay 6 years after the completion of primary consolidation settlement. Time for completion of primary settlement is 2 years.

A rigid footing with B = 3m and L = 4m carries a total load of P = 890kN as shown. A.) Determine the elastic settlement of the footing if the Poisson’s ratio (µs) of soil = 0,32, modulus of elasticity of soil Es = 15900kPa, Influence factor Ip = 0.88. B.) Compute the primary consolidation settlement of clay layer if it is normally consolidated. C.) Compute the total consolidation of the clay 6 years after the completion of primary consolidation settlement. Time for completion of primary settlement is 2 years.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter18: Sheet-pile Walls

Section: Chapter Questions

Problem 18.17P

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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

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A rigid footing with B = 3m and L = 4m carries a total load of P = 890kN as shown.
A.) Determine the elastic settlement of the footing if the Poisson’s ratio (µs) of soil = 0,32, modulus of elasticity of soil Es = 15900kPa, Influence factor Ip = 0.88.
B.) Compute the primary consolidation settlement of clay layer if it is normally consolidated.
C.) Compute the total consolidation of the clay 6 years after the completion of primary consolidation settlement. Time for completion of primary settlement is 2 years.

P= 890kN
LOOSE
1.5m
SAND
Teny= 16.2 kN/m
3m
1.5m
V GWT
Yan = 18 kN/m
2m
T= 19.4 kN/m
CLAY
3m
e, = 0.6
LL = 45
ROCK

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