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Wall Length Rafter Thickness
Wall Width Rafter Depth
Roof Angle Ridge Thickness
Overhang (level) Rafter Spacing
Overhang Gable Extend Ridge
End Rafters Set-in Birdsmouth foot cut  
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Gable roof plan


With a building length of 12000 mm and width of 6000 mm, a (level) roof overhang of 600 mm, the roof is 13200 mm long and 7200 mm wide
With an angle of 15 °, the overall height above outer wall is 907 mm. The roof area is 98.39 m²
Rafter spacing is 853.6 mm (Next larger spacing = 919.2 Next smaller = 796.7)
38.8 lineal metres eave @ 600 mm overhang = 23.3 m²
You need: 1 Ridge @ 13200 × 50
30 Rafters @ 3701 × 100 × 50

Rafter dimensions Framing Span Tables (Australia)





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Australia

Wonga Beach Q.L.D. Australia


ALWAYS CHECK WITH YOUR LOCAL BUILDING AUTHORITY BEFORE LAYING OUT
OR BUILDING ANYTHING, AND FOLLOW ALL LOCAL CODES

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With angle of degrees Close
If Heel Cut = ?
If Foot Cut = ?