You are trying to design a roof that will support the loads of about 1kN on the upper joints. There are two options (a) a Pratt roof truss and (b) a Howe roof truss. Use the method of sections to find the forces in members BC, HG, and HC (in (a))/BG (in (b)) for both structures and compare their values. 1 kN 1 kN 1 kN 1 kN 1 kN 1 kN 1 kN B 1 kN 1 kN B 1 kN 2 m 2 m A E A 2 m E 2 m H 2 m G 2 m F 2 m H 2 m G 2 m F 2 m

You are trying to design a roof that will support the loads of about 1kN on the upper joints. There are two options (a) a Pratt roof truss and (b) a Howe roof truss. Use the method of sections to find the forces in members BC, HG, and HC (in (a))/BG (in (b)) for both structures and compare their values. 1 kN 1 kN 1 kN 1 kN 1 kN 1 kN 1 kN B 1 kN 1 kN B 1 kN 2 m 2 m A E A 2 m E 2 m H 2 m G 2 m F 2 m H 2 m G 2 m F 2 m

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

Plane and Space Trusses

In civil engineering, a truss is the most important structure that forms the most fundamental member of any building structure and commercial complexes. Trusses are composed of individual members or links that are interconnected by suitable joints, such as rivets, welds, or bolts, and nuts. In trusses, the interconnection leads to the formation of a series of triangles joined together such that all the triangular members behave as a single rigid body. In a simple truss, three members are connected to form a truss member. In trusses, the force always acts at the joints or the interconnection between the individual members.

Question

You are trying to design a roof that will support the loads of about 1kN on the upper joints.
There are two options (a) a Pratt roof truss and (b) a Howe roof truss. Use the method of
sections to find the forces in members BC, HG, and HC (in (a))/BG (in (b)) for both structures
and compare their values.
1 kN
1 kN
1 kN
1 kN
1 kN
1 kN
1 kN
B
1 kN
1 kN
B
1 kN
2 m
2 m
Ap
E
A
2 m
H
2 m
G
2 m
F
2 m
2 m
Н
2 m
G
2 m
F
2 m
(a)
(b)

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