Problem 4A footing supports a 200mm thick concrete wall.Wall loads: = 175Dead Load kN/m89%DLive LoadkN/m= 20.6%3DConcrete, f'cMPа= 415Steel, fyMPаUnit weight = 23.6of concrete kN/m3Factored= 1.2Dload+ 1.6LcombinationThickness of =footing 350mmSteel Cover (bottom offooting tocentroid of90mmbars) The gross allowable soil pressure is 100 kPa andwidth of the wall is 200mm. Assume that the top ofthe footing is at the ground level.A) What should be the width (m) of the footing sothat the allowable soil pressure will not beexceeded? (Dimensions in multiples of 50mm)

The gross allowable soil pressure is 100 kPa and width of the wall is 200mm. Assume that the top of the footing is at the ground level. A) What should be the width (m) of the footing so that the allowable soil pressure will not be exceeded? (Dimensions in multiples of 50mm)

The gross allowable soil pressure is 100 kPa and width of the wall is 200mm. Assume that the top of the footing is at the ground level. A) What should be the width (m) of the footing so that the allowable soil pressure will not be exceeded? (Dimensions in multiples of 50mm)

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

Problem 4
A footing supports a 200mm thick concrete wall.
Wall loads: = 175
Dead Load kN/m
89
%D
Live Load
kN/m
= 20.6
%3D
Concrete, f'c
MPа
= 415
Steel, fy
MPа
Unit weight = 23.6
of concrete kN/m3
Factored
= 1.2D
load
+ 1.6L
combination
Thickness of =
footing 350mm
Steel Cover (
bottom of
footing to
centroid of
90mm
bars)

The gross allowable soil pressure is 100 kPa and
width of the wall is 200mm. Assume that the top of
the footing is at the ground level.
A) What should be the width (m) of the footing so
that the allowable soil pressure will not be
exceeded? (Dimensions in multiples of 50mm)

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