a) A foundation, 1.5 m square, will carry a load of 700 kN and will be founded at a depth of 1.0 m in a deep deposit of sand. The soil is saturated throughout with a unit weight of 19.5 kN/m³. Ground water level occurs at a depth of 1.5 m below the surface of the soil. A series of SPT tests gave the following results: Depth range (m) Ground surface - 1.0 1.0 2.0 2.0-3.0 3.0-4.0 4.0-5.0 N value 10 12 14 20 Determine the elastic settlement at the centre of the foundation using De Beer and Martens' method.

a) A foundation, 1.5 m square, will carry a load of 700 kN and will be founded at a depth of 1.0 m in a deep deposit of sand. The soil is saturated throughout with a unit weight of 19.5 kN/m³. Ground water level occurs at a depth of 1.5 m below the surface of the soil. A series of SPT tests gave the following results: Depth range (m) Ground surface - 1.0 1.0 2.0 2.0-3.0 3.0-4.0 4.0-5.0 N value 10 12 14 20 Determine the elastic settlement at the centre of the foundation using De Beer and Martens' method.

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

a) A foundation, 1.5 m square, will carry a load of 700 kN and will be founded at
a depth of 1.0 m in a deep deposit of sand. The soil is saturated throughout
with a unit weight of 19.5 kN/m³. Ground water level occurs at a depth of 1.5
m below the surface of the soil.
A series of SPT tests gave the following results:
Depth range (m)
Ground surface - 1.0
1.0-2.0
2.0-3.0
3.0-4.0
4.0-5.0
N value
---
10
12
14
20
Determine the elastic settlement at the centre of the foundation using De
Beer and Martens' method.

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