A 1.5 m square footing is founded at a depth of 1m (equal to the foundation thickness) in fine-grained soil with the following properties: Ydry = 20 kN/m³; Ysat = 22 kN/m³; Cu.k = 70 kPa; ck' = 10 kPa; k' = 30° The load on the footing is vertical but has a maximum eccentricity (e) of 250 mm from one axis (Hint: B- = B 2e). If the water table is at the foundation level, determine the design bearing resistance of the footing for a. short-term condition b. long-term condition

A 1.5 m square footing is founded at a depth of 1m (equal to the foundation thickness) in fine-grained soil with the following properties: Ydry = 20 kN/m³; Ysat = 22 kN/m³; Cu.k = 70 kPa; ck' = 10 kPa; k' = 30° The load on the footing is vertical but has a maximum eccentricity (e) of 250 mm from one axis (Hint: B- = B 2e). If the water table is at the foundation level, determine the design bearing resistance of the footing for a. short-term condition b. long-term condition

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Shallow Foundations-bearing Capacity

Section: Chapter Questions

Problem 16.19CTP: A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a...

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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

Solving using Eurocode 7, design approach 1, combination 2

A 1.5 m square footing is founded at a depth of 1m (equal to the foundation thickness)
in fine-grained soil with the following properties:
Ydry = 20 kN/m³; Ysat
22 kN/m³; Cu.k = 70 kPa; ck' 10 kPa; k' = 30°
The load on the footing is vertical but has a maximum eccentricity (e) of 250 mm from
one axis (Hint: B- = B − 2e). If the water table is at the foundation level, determine the
design bearing resistance of the footing for
a. short-term condition
b. long-term condition
=

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