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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) Rafter Spacing
Overhang Gable
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Seat Cut Rafters birdsmouthed
  Calculate Plumb and Seat cuts + HAP from roof angle
End Rafter Setin Bottom Plumbcut Rafters are longer for bottom plumb cut
Include running measurements for ridge, wall and hip spacing Running Setout Points Extend Ridge

Battens Top Batten Set-in from top end of Rafter
NOT Ridge Center
Batten Spacing Top Batten Set-in
Batten Width Bottom Batten Set-in

RunTalk Android App - Speaks Running Measurements while you mark them out! (free)




With a building length of 40' and width of 20', a roof overhang of 2' the roof is 44' long and 24' wide.

At an angle of 22 °, the overall height above outer wall is 4'9~1/8"
The ridge top is 4'8~13/16" above top of wall.
The roof area is 1138.93 ft²
Rafter spacing is 1'3~15/16"
(Next larger spacing = 1'4~1/2" Next smaller = 1'3~7/16")

139'9~1/4" lineal eave @ 2' overhang = 279.5 ft² level
( or 293.4 ft² with side eaves = 22 ° )

Gable Area (under rafters ) = 40.4 ft²
Roof Volume (top of wall/plate to under rafters) = 1616.1 ft³
Roof Volume (top of wall/plate to top of rafters) = 2191.32 ft³


You need: 1 Ridge @ 44' × 1~1/2"
62 Rafters @ 13'1~23/32" × 8" × 1~1/2"







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8" Block Vertical Rebar Placement
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With angle of ° Close Delete
If Plumb Cut = ?
If Seat Cut = ?
(Rafter depth ) To set HAP = 2/3 rafter plumbcut length
set the

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