A.B.L14L14L(a)(b)BHinge(c) Construct influence lines for the support reaction at A in the beams shown in Fig. P.20.1(a), (b)and (c).Ans.a. Unit load at C, RA=1.25.b. Unit load at C, RA=1.25; at D, RA=-0.25.c. Unit load between A and B, RA=1; at C, RA=0.

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Answered: A. B. L14 L14 L L14 (a) (b) B Hinge (c)…

Engineering

Civil Engineering

A. B. L14 L14 L L14 (a) (b) B Hinge (c) col

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

Loads and Reactive Forces

Loads are the external influences that a beam experiences under its working conditions. For instance, a beam may be subjected to shear loads, twisting loads, bending moment, and axial loads during its working conditions. Engineers primarily deal with beams and trusses in the civil engineering domain. Due to the influence of loads, it is very crucial to determine the induced stresses and deformation values. These values give an insight into the critical area of the beam that needs to be worked upon to make it fail-safe.

Question

Construct influence lines for the support reaction at A in the beams shown in Fig. P.20.1(a), (b)
and (c).
Ans.
a. Unit load at C, RA=1.25.
b. Unit load at C, RA=1.25; at D, RA=-0.25.
c. Unit load between A and B, RA=1; at C, RA=0.

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