Greek says one must keep rafter length in range of 1 9 to 1 7 th of span but as per roman style the standard dimensions are kept about 1 3 to 2 9 th of span with an angle of 23 to 24 degree.
Roof pitch angle app.
Pitch finder take pictures accurate roof take offs measurements preview the roof on the map then save or import image blueprint access sketch tool and trace the roof to measure one plane at a time no need to set a scale unless using an image blueprint use positioning tool and tap points to reposition or delete.
Download roof pitch factor and enjoy it on your iphone ipad and ipod touch.
Get the pitch factor or degrees without remembering any complex equations or doing any calculating.
Roof pitch is expressed as a ratio of the amount of the roof s vertical rise over a corresponding horizontal distance called the run pitch is written assuming a run of a foot or 12 inches so the ratio describes how much the roof rises for every foot of its run.
Commonly it is 3 4 th of span as per gothic rafter must be equal to span.
Pitch tan angle where angle is the roof pitch expressed in degrees.
In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally.
Quickly and easily find the pitch to a roof just by looking through your camera.
The height and placing of the roof window have to be adjusted according to the pitch of the.
The value displayed as the rise will be your x.
Usually average roof pitch is determined using the same roof length method.
After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.
Use the velux roof pitch app to measure the pitch of your roof and thereby your choice of roof window.