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1. Differentiate the permanent and the variable action with suitable examples

1. Differentiate the permanent and the variable action with suitable examples

Structural Analysis
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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1. Differentiate the permanent and the variable action with suitable examples

2. Analyze the stress-strain relationship of steel.

Notes :

                         Internal forces

                         Fcc = 0.567fck(b x 0.8x) = 0.454 fck bx

                         Fst = 0.87 fyk As

 

                         Moment of resistance with respect to steel,

                         M = Fcc.z

 

                         Moment of resistance with respect to concrete,

                         M = Fst.z

                        

                         Mbal = Kbal fck bd2 where Kbal = 0.167

 

                         As ‘ = (M-Mbal) / 0.87 fyk (d-d’)

                        

                         As = Mbal / 0.87 fyk zbal  + As’

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