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Trusses are used in trussed roofs to support the _________

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Trusses are used in trussed roofs to support the _________

(a) Rafters

(b) Roofing material

(c) Purlins

(d) Beams

The question was posed to me in an interview for internship.

Question is taken from Trussed Roofs topic in chapter Roofing Materials of Construction & Building Materials

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The correct choice is (c) Purlins

Explanation: There are basically three elements in trussed roofs. These are rafters, purlins and trusses. The function of the trusses is to provide support to the purlins which in turn provide support to the rafters. Rafters are used to provide support to the roofing material.

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