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In a king-post truss, common rafters have the same slope as the principal rafters.

(a) True

(b) False

The question was asked in class test.

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

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The correct choice is (a) True

For explanation I would say: In a king-post truss, common rafters have the same slope as the principal rafters. The function of the principal rafters is to provide support to the purlins while the function of the purlins is to provide support to the common rafters.

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