For the simply supported beam shown, draw influence lines for moment at C (12-ft from support A), andreaction at B. Clearly identify critical points on the influence lines with ordinates.The beam supports a uniform dead load of 100 lb/ft, a live load of 400 lb/ft, and a single live concentratedload of 10-kips. What is the maximum positive and negative moments at C? A is a pin and B is a roller.Aオ1212-71224C.

Answered: For the simply supported beam shown,…

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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Question

For the simply supported beam shown, draw influence lines for moment at C (12-ft from support A), and
reaction at B. Clearly identify critical points on the influence lines with ordinates.
The beam supports a uniform dead load of 100 lb/ft, a live load of 400 lb/ft, and a single live concentrated
load of 10-kips. What is the maximum positive and negative moments at C? A is a pin and B is a roller.
A
オ
12
12-7
12
24
C.

Expert Solution

Step 1

when the unit load at A and B then bending moment at C equal to 0 .and if the unit load at C then bending moment at c is ab/l.

from the muller

to draw the ILD for bending moment at any section c assume an imaginary hinge at C and lifted it by ab/l so that the sum of angle of the adjacent support is equal to 1 then corresponding deflected shape of the bending moment it self the ILD for bending moment at C.

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