Which of the following types of trusses is commonly used for large-span industrial buildings?
- AHove truss
- BPratt truss
- CWarren trussCorrect
- DFink truss
Solution
Concept
Truss forms used for large spans
Step-by-step solution
1. Fink and Howe trusses are used for small and medium spans of roofs. 2. Pratt trusses are used for medium spans. 3. For large-span industrial buildings the Warren truss (with its efficient triangulation) is commonly used.
Explanation
The Warren truss, with equilateral triangles and equal-length members, uses material efficiently over large spans. It is commonly adopted for large-span roofs and bridges.
Shortcut
Fink: short span roofs. Warren: large spans.
Common mistake
Choosing Pratt due to its popularity in bridge design.
Correct answer: C) Warren truss