Problem
entering a saltbox roof into BidMagic roofing
estimating software
salt box roof- different slopes on gable roof, or gable not centered
Diagnosis
A 'saltbox' roof is like a gable roof, but the gable is off-center. Eave heights are different,
front and back. The two parts may have different pitches.
Solution
Enter as a gable roof.
If pitches are different, use the average between them. This will give roof area that is pretty close
to the real thing. Can use a weighted average (based on area on each side) if it's very uneven.
For eave height, use the average between the two eave heights. This will give siding and gable end
area that's pretty close to the real thing.
Comments
Another alternative, especially if there is a big difference between eave heights:
1. Enter as a gable roof.
2. Use average roof slope, if necessary
3. Enter higher eave height as the eave height.
4. This will give too much gable end area. The area to subtract is approximately building width (perpendicular
to ridge) * height difference between high eave and low eave. This covers the reduction of area on BOTH sides of the
building.
Entered 8/21/97 by Dennis. Updated 10/22/2010.
NOTE-- We retired BidMagic estimating software back
in 2002, and replaced with Goldenseal-- which is integrated estimating
software and project
management software (plus optional accounting
software).
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