HBS SERVICES


RAFTER CALCULATOR

RAFTER CALCULATOR
Slope (IN 12) Slope Factor Slope (IN 12) Slope Factor
3 1.031 4 1.054
5 1.083 6 1.118
7 1.158 8 1.202
9 1..25 10 1.302
11 1.357 12 1.474

To use the calculator, multiply the run of the truss by the appropriate slope factor in the chart above. The result will be the approximate length of truss required, not including the overhang.


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