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    ldrotos's Avatar
    ldrotos Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jun 7, 2009, 06:37 AM
    Rafters Angle
    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
    creahands's Avatar
    creahands Posts: 2,854, Reputation: 195
    Ultra Member
    		  
    #2

    Jun 7, 2009, 07:01 AM

    That is a very very steep roof pitch.

    10.5'' rise to 12'' run

    Chuck
    ifightfires247's Avatar
    ifightfires247 Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Jun 7, 2009, 02:52 PM
    Your angle will be 41.19 degrees
    ifightfires247's Avatar
    ifightfires247 Posts: 3, Reputation: 1
    New Member
    		  
    #4

    Jun 7, 2009, 02:54 PM

    41.19 degrees is your angle
    ldrotos's Avatar
    ldrotos Posts: 2, Reputation: 1
    New Member
    		  
    #5

    Jun 7, 2009, 06:04 PM
    Rafters 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
    Clough's Avatar
    Clough Posts: 26,677, Reputation: 1649
    Uber Member
    		  
    #6

    Jun 7, 2009, 06:13 PM

    Hi, ldrotos!

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

    Thanks!
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
    Senior Member
    		  
    #7

    Jun 7, 2009, 06:39 PM
    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.
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