which of the following is necessary in order to determine the correct length for a common rafter?\nsubtract…
which of the following is necessary in order to determine the correct length for a common rafter?\nsubtract the width of the birds mouth\nsubtract half the thickness of the rafter\nadd half the thickness of the ridgeboard\nsubtract half the thickness of the ridgeboard
Answer
Brief Explanations:
When calculating the length of a common rafter, one needs to account for the ridge - board. Adding half the thickness of the ridgeboard is necessary to get the correct length as it affects the overall measurement from the top of the wall plate to the ridge.
Answer:
add half the thickness of the ridgeboard