A square foundation is shown in Figure P4.12. Use FS = 6, and determine the size of the foundation. Use Prakash and Saran theory [Eq. (4.55)]. 450 kN70 kN•my = 16 kN/m³c' = 01.2 md'= 30°B× BWater tableYsat = 19 kN/m3c' = 0%3Do' = 30°Figure P4.12 1Qu = BL c'Nde)Feste) + qNgle)Fqgsle)te) + ;yBNye}Fyate

Given:- A square foundation is shown The magnitude of the load acting on the foundation (P) = 450…

Answered: 450 kN 70 kN•m y = 16 kN/m³ c' = 0 1.2…

450 kN 70 kN•m y = 16 kN/m³ c' = 0 1.2 m d'= 30° B× B Water table Ysat = 19 kN/m3 c' = 0 %3D o' = 30° Figure P4.12 1 Qu = BL c'Nde)Feste) + qNgle)Fq gsle) te) + ;yBNye}Fyate

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 square foundation is shown in Figure P4.12. Use FS = 6, and determine the size of the foundation. Use Prakash and Saran theory [Eq. (4.55)].

450 kN
70 kN•m
y = 16 kN/m³
c' = 0
1.2 m
d'= 30°
B× B
Water table
Ysat = 19 kN/m3
c' = 0
%3D
o' = 30°
Figure P4.12

1
Qu = BL c'Nde)Feste) + qNgle)Fq
gsle)
te) + ;yBNye}Fyate

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