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Gable Roof Framing Calculator - With Running Layout Points - Inch



Wall Length Rafter Thickness
Wall Width Rafter Depth
Roof Angle Enter angle in degrees directly or select pitch from dropdowns to calculate and enter angle °   in 12 Ridge Thickness
Overhang (level) Ridge Depth
Overhang Gable Rafter Spacing
Birdsmouth Seat   Birdsmouth Seat Cut diagram Rafter Spacing Type
End Rafter Setin
Actual Physical Sizes All measurements are actual physical finished sizes.

Email this Calculation Creates a link to save or Email current calculation

Scale

Gable roof framing calculator plan diagram with full dimensions

Trim rafter tails after placement For a good straight fascia, add an extra inch or 2 to the tails of all your rafters (total length). After they're up, you can snap a line to mark and trim the tails in a nice straight line, to make up for any ridge warp or marking, cutting and fixing errors.



All running measurements are 'and on', from start point to near side of rafter.
Running Ridge: Mark out


Running Wall: Mark out

Left click, release then drag to measure at scale in diagram below - Enlarge diagram scale for more accurate measurements.

Angle Scale

Gable roof profile diagram with all angles, dimensions and volumes



Gable roof common rafter detail diagram with all dimensions and birds mouth



DON'T BREATH THE DUST If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks

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Check relevant local regulations for appropriate sizes, spacings and all engineering requirements.


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