1. What is meant by the term 'two-dimensional truss/framework? 2 What is a space truss? Explain. 3. How will you know whether a two-dimensional framework will be stable? Use a sketch to support your answer.
1. What is meant by the term 'two-dimensional truss/framework? 2 What is a space truss? Explain. 3. How will you know whether a two-dimensional framework will be stable? Use a sketch to support your answer.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1. What is meant by the term 'two-dimensional truss/framework?
2 What is a space truss? Explain.
3. How will you know whether a two-dimensional framework will be
stable? Use a sketch to support your answer.
4. How will you know whether a three-dimensional framework will be
stable? Use a sketch to support your answer.
5. If a member of a framework is compressed as a result of the external
forces acting on the framework, what will the member be termed?
6. Identify three methods of calculating internal forces in the members of
a simple two-dimensional truss.
.7. Explain the tension coefficient method of calculating the internal
forces in the members of a simple three-dimensional truss.
8. Derive expressions for the state of frameworks with or without
foundations
* 9. Using the knowledge gained from your research into two-dimensional
frameworks, solve the following:
Details for the bridge truss design:
8KN
6KN
GKN
A Warren girder bridge truss that will be subjected to loads as shown above
is to be designed and analysed. All triangles are equilateral triangles and
member a-b is 2 m long. Calculate the following:
• State the nature of the framework.
• Calculate the reactions at the supports.
• Using the method of sections (analytical method), calculate the
magnitude of the internal forces in member b-c, b-g and g-h and state
the sense (nature) of each force.
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