Rafter Length Calculator Shed Roof

If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length.

Rafter length calculator shed roof.

How to calculate a lean to rafter. Rafter length using pitch v r 2 sqrt 1 p 2 where v overhang r roof span p pitch use our online rafter length calculator to quickly compute the length of the shed roof rafter by entering the measurements of overhead length of roof span pitch or angle. 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. If you look at the rafter span chart you ll notice that 2x4s can be used for rafters on spans up to 11.

It includes the rise and works in feet and inches or metric values. Input the rafter span on the flat eave overhang and pitch of the roof. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. The preview window displays a dimensioned side view of the shed roof.

The results are automatically fired. The pitch and span of your roof will dictate how long of a rafter you ll need use maximum span calculator to help you find your rafter size. See rafter run to outer wall calculator below. Allow for ridge thickness when determining rafter run to outer wall.

Half building width minus 1 2 ridge thickness. It is the length of this portion of the rafter. Anything beyond that you are looking at using 2x6s for most sheds. Rafter length the rafter length results from this calculator represents the length of line l on the diagram s.

Click the button to calculate the stock size needed for this job. If you plan to have overhang etc. Online rafter length calculator 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. This calculator is to be used as an estimating tool only.

Includes result for hip valley factor slope factor and the roof slope in degrees. Lean to shed rafter calculator into a wall calculate the length of lean to shed roof rafters for any common roof pitch when the top of the rafters stop into a wall. Note that this is not the actual length of the rafter. The rafter member will be longer.