Shed Roof Rafter Span Calculator

Our roof rafter calculator tools are handy for calculating the number of rafters needed, rafter length calculator, lineal feet of rafter, board feed in ridge and sub-facia,and the total board feet in the roof.. Calculate the length of lean to shed roof rafters for any common roof pitch when the top of the rafters stop into a wall. it includes the rise and works in feet and inches or metric values.. Quick look-up shed size & roof pitch. for exact rafter length please use punching calculator.

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Calculate the length of common rafters with this free and easy online tool by entering a dimension for the roof width, selecting a pitch for the roof, and the thickness of the ridge.. Rafter spans for southern yellow pine, douglas fir, and eastern spruce. rafter span tables - use these tables to determine lengths, sizes and spacing of rafters based on a variety of factors such as, species, load, grade, spacing and pitch.. Bpkjn wrote: i am building a shed with a 12' x 6' floor space. i am planning a single span and single pitch roof constructed from timbers about 18" apart and covered with 0.451" (or 15/32") plywood and roofing felt..