The scissor truss below supports a roof with the factored loads shown. All members are steel shapes with E - 29000 ksi. Complete the following prompts considering this truss. a. Show mathematically that the truss is statically indeterminate. b. If all members have equal areas of A = 8 in.², determine all member forces and report your results in a table. You should use the principle of virtual work with Member BE as your redundant member. c. Repeat part (b) but modify Member BE only such that its area is A = 2 in.2. Describe the effect of this modification on the member forces in the truss compared to those found in part (b) (both the total member forces in the indeterminate system and those in the statically determinate subsystem).

The scissor truss below supports a roof with the factored loads shown. All members are steel shapes with E - 29000 ksi. Complete the following prompts considering this truss. a. Show mathematically that the truss is statically indeterminate. b. If all members have equal areas of A = 8 in.², determine all member forces and report your results in a table. You should use the principle of virtual work with Member BE as your redundant member. c. Repeat part (b) but modify Member BE only such that its area is A = 2 in.2. Describe the effect of this modification on the member forces in the truss compared to those found in part (b) (both the total member forces in the indeterminate system and those in the statically determinate subsystem).

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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