Scenario The wall footing at right is to be constructed to carry an inclined load at 85 degrees with the horizontal, as shown. Assume that there is impenetrable bedrock below the Sample point shown in the figure. Question #1: Calculate the expected primary settlement of the soil at the Sample point. Also, determine the time it will take for 60% of the expected primary settlement to occur. 2.5 m www 0.5 m 120 kN/m 2 m 1 m Y = 17.7 kN/m³ • Sample Ce = 0.190 Cv = 0.5 cm²/day eo= 0.83 Silty clay Question #2: Determine the factor of safety against bearing failure of the soil for the wall footing if qult of the soil is 160 kN/m².

Scenario The wall footing at right is to be constructed to carry an inclined load at 85 degrees with the horizontal, as shown. Assume that there is impenetrable bedrock below the Sample point shown in the figure. Question #1: Calculate the expected primary settlement of the soil at the Sample point. Also, determine the time it will take for 60% of the expected primary settlement to occur. 2.5 m www 0.5 m 120 kN/m 2 m 1 m Y = 17.7 kN/m³ • Sample Ce = 0.190 Cv = 0.5 cm²/day eo= 0.83 Silty clay Question #2: Determine the factor of safety against bearing failure of the soil for the wall footing if qult of the soil is 160 kN/m².

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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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

Scenario
The wall footing at right is to be
constructed to carry an inclined load at
85 degrees with the horizontal, as
shown. Assume that there is
impenetrable bedrock below the
Sample point shown in the figure.
Question #1:
Calculate the expected primary
settlement of the soil at the Sample
point. Also, determine the time it will
take for 60% of the expected primary
settlement to occur.
2.5 m
0.5 m
120 kN/m
2 m
y = 17.7 kN/m³
• Sample Cc = 0.190
Cv = 0.5 cm²/day
eo = 0.83
Silty clay
Question #2:
Determine the factor of safety against bearing failure of the soil for the wall footing if qult of the
soil is 160 kN/m².

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