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determine the support reactions on the following structures

determine the support reactions on the following structures

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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Question

determine the support reactions on the following structures

(Situation 2) Determine the support reactions and member forces on the following trusses: 9 ft 12 ft *Assume B to be rocker and D to be pinned. 12 ft 12 ft 30°
Transcribed Image Text:(Situation 2) Determine the support reactions and member forces on the following trusses: 9 ft 12 ft *Assume B to be rocker and D to be pinned. 12 ft 12 ft 30°
Expert Solution
Step 1

degree of static indeterminacy, Ds = number of members + number of unknown support reactions - 2 x (numbers of joints)

DS = 9 +3- 2×6=0

thus, unknown support reactions can be found by using equilibrium equations only.

to determine support reactions

 

let us assume

RB = vertical reaction at B

RD = vertical reaction to the inclined plane at D

HD = along the inclined plane at D

as shown below,

Civil Engineering homework question answer, step 1, image 1

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