Answered: F H ft 15 ft B C D 4 panels at 20 ft =…

Engineering

Civil Engineering

F H ft 15 ft B C D 4 panels at 20 ft = 80 ft (a)

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter6: Beam–columns

Section: Chapter Questions

Problem 6.9.1P

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Concept explainers

Influence Lines

The graphs that show the variation of a function at a specific point on a beam or truss due to a unit load placed at any point along the structure are known as influence lines in engineering. Some common functions that are studied with influence lines are shear, moment, and deflection. In designing beams and trusses, it is important to use influence lines in structures where loads would move along their span such as bridges, crane rails, conveyor belts, floor girders, etc. The influence lines help to study where a load will create the maximum effect for any of the functions.

Question

Draw the influence lines for the forces in members AF, CF, and CG of the Parker truss shown in Fig. 8.19(a). Live loads are transmitted to the bottom chord of the truss

F
H
ft
15 ft
B
C
D
4 panels at 20 ft = 80 ft
(a)

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