Q. Roof trusses are generally used when the spans exceeds :

A
3m
B
5m
C
10m
D
15m
Solution:
  • When the span of the roof exceed 5m and where there are no inside walls to support the purlins then trusses are provided at suitable intervals along the length of the beam.
  • Spacing is limited to 3m for wooden trusses.
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