With the help of neat sketches, explain connections between purlin and roof covering in a roof truss.
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Purlins are the horizontal structural members of the roof. It supports the load from the roof deck and is supported by principal rafter/steel beams/building walls.
Roof coverings are mainly of two types:
Connections Between Purlins And Roof Coverings:
Roof covers are connected to Purlins by bolts. The bitumen washer is replaced under GI washer to make the joint water tight.