Hello
I'm constructing/ building a roof on shed , I have a run of 4ft and rise of 42inches. I am looking for a the pitch angle to construct the rafters?

Thanks
ldrotos

That is a very very steep roof pitch.

10.5'' rise to 12'' run

Chuck

Your angle will be 41.19 degrees

41.19 degrees is your angle

Hello
I had placed the incorrect information about the run of my shed roof, I apologize
My run is 6ft from the birds mouth plus over hang and the rise is 42 inches. I'm planing to construct roof trusses and apply plywood. I plan to use a jig , after using the
rise/run = pitch, I calculated the pitch to be 7/12? With an top rafter angle of 30 degrees
at top of rafter.
Please advise if truss construction information is correct and if incorrect explain how to arrive at the correct information.

Regards
ldrotos

Hi, ldrotos!

Then, this post by you should be placed on your other thread about this.

Thanks!

Idrotos, based on the measurements you provided, your calculations are correct. 7/12 is the pitch and the rafters will be angled arctan(7/12) = 30.26 degrees from horizontal.