Author Question: When collar beams (ties) are needed to brace rafters, they are installed on _____ rafter. A) ... (Read 42 times)

NClaborn · **on:** Jul 24, 2018

When collar beams (ties) are needed to brace rafters, they are installed on _____ rafter.

A) every
B) every other
C) every third
D) every fourth

Question 2

In order to obtain the correct length for a common rafter, it is necessary to _____.

A) subtract the width of the birds mouth
B) subtract half the thickness of the ridgeboard
C) subtract half the thickness of the rafter
D) add half the thickness of the ridgeboard