It will help you with plumb and side cuts for hip and rafter down and side purlin cuts and more.
Roof cuts and rafter lengths book.
Invaluable to anyone who wants to cut a roof by hand and not use trusses.
There are a few good ready reckoners.
A ready reckoner is pretty much a rafter length calculator a book full of tables for working out the rafter lengths quickly and easily.
Roof sheathing cuts and angles.
Gives rafter runs to locate ridges and framing points.
For larger roofs though i use a roofing ready reckoner.
Calculations for roof frames roof cuts and rafter lengths.
Exact lengths of all rafters including all regular and irregular hips valleys commons and jacks.
Each page has a different table depending on the pitch angle of your roof with all the figures you need.
This is the rafter length from the top cut to the seat plumb mark.
The tail or eave overhang must be added to the rafter length.
Tail or eave length.
You put in the width and the pitch and this book will give you the full length of the rafter.
Details cuts and bevels for all rafters.
Lots of illustrations and easy to follow example problems.
With calculations diagrams and tables.
Rafter book page 1 created date.
Subtract what you are using as a ridge and you have your length perfect every time.
Using the 7 inch rise table and our 15 run the common rafter length is 17 43 8.