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DiaDot Tool Box |
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DiaDot Tool Box |
| For each of
the roof types pictured below, L =
horizontal Length, W = horizontal Width,
and H = vertical Height, all entered
in feet. Slope
in inches
per foot may substituted for H.
Hip roofs can present a problem for height measurement, and the slope method may be substituted in place of height measurement. Since modern architecture has allowed the incidence of mixed slopes in a single structure, the calculator allows for entry of differing slopes for intersecting roofs. For many roofs, dimensions can be taken from the ground or from a ladder. Be sure that your measurements include any overhang at the eaves. Height can often be measured at the end wall at the center of a gable. Complex roofs may have numerous repeats of these shapes - perform a separate calculation for each section, then add the results together (on paper) to obtain total roof area. A "salt box" roof with unequal sides may be calculated as two separate shed roof shapes. An "A-Frame" roof is simply a gable with high slope. |
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| Enter roof
dimensions in feet, (or slope in inches rise per foot.)
If you enter only L-1, W-1, & H-1, the result will be the area of a single straight gable roof. If you enter all six values, the result will be the actual exposed area of both roofs. The values calculated for roof 1 and roof 2 are independent. The total will not equal their added values, as the calculator subtracts the hidden area from roof 1 at the intersection, and displays only the actual exposed roof area for the total. |
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L-1
W-1 H-1
slope1
OR /12 |
Area 1
= Square Feet |
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| L-2
W-2 H-2
slope2
OR /12 |
Area 2
= Square Feet |
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| Total Roof Areas 1& 2
(Unless only Roof 1 entered) Square Feet |
Roof 1 Hidden area subtracted
Square Feet Roof 2 Ridge Length Feet |
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