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Roof Framing terms

Key Concepts:

Terms in this set (25)

Birds Mouth
Cut in lower part of rafter that attaches to the top plate
Collar Tie
a horizontal element that connects two opposing rafters near the ridge
Dead Load (roof)
Al materials that comprise roof
Rake
Roof edge on gable end
Fascis
Area of trim behind gutter or rake
Framing square
L-shaped too with dimensions and tables
Hypotenuse
the side of a right triangle opposite the right angle also called slope
Live load (roof)
All load applied to roof (snow, Ice, people)
Lookouts
Gable framing members attaed to gable rafter and outlook, barge or fly rafter
Purlin
Horizontal member between trusses that support the roof.
Rafter (common)
Roof framing member stretching from ridge to wall line
Ridge
Horizontal line at the top of a roof
Rise (unit or total)
Amount in inches the roof projects upward per ft of run
Sheathig
Roof decking attached to rafters
Slope
Hypotenuse or pitch of roof
Speed Square
Measuring and marking 0-90 degree angles, finding roof pitches, and laying out rafters
Span
Total width of a building/structure.
Run
Half the span
Body
Long side of framing square 24"
Tounge
Short side of framing square 16"
Diagonal side of speed square
degrees of angle
Rafter pitches on speed square
common, hip, valley
Two fixed angles on speed square
45 and 90
Roof spreading is called
Wayne
Found on framing square
rafter table
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