The ridge of a hip roof is equal to the length of the building minus twice the run plus the thickness of the rafter stock.
Roof hip length.
In the example at left the run is 10.
Then divide this number by 2 to reflect the separate halves of the roof.
This calculator will help you estimate hip roof parameters including rafters and roof area person outline anton schedule 2011 08 29 17 53 20 one of users asked us to create calculator which will help him estimate hip roof parameters like rafter s lengths roof rise and roof area.
So this is the measurement to the center of the first common rafter.