Essay 1-2 pages Cost & estimating
Ssult89
Lecture11-Wood.pdf
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Lecture 11 - Wood
Lumber
Bid by the piece or board measure
Must keep sizes and lengths separate
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Board Measure
Board Measure
N = P x T x W x L /12
N = Number of feet
P = Number of pieces of lumber
T = Thickness of lumber (in)
W = Width of lumber (in)
L = Length of lumber (ft)
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Floor Framing Includes:
Girder
Sill
Floor joist
Joist headers
Subflooring
Wood Floor Joists
Lumber
2 x 6s, 2 x 8s, 2 x 10s, 2 x 12s
I-joists
I-joist
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Trimmers and Headers
Trimmers and Headers
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Bridging
Wall Framing
Includes
Sole plates
Studs
Top plates (double?)
Headers
Finish materials
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Wall Framing
Bottom Plates
Bid by the
Piece
Lineal foot
Board measure
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Plates
Bottom plates:
Equals the length of the wall
Must be of naturally durable or treated wood when on concrete or masonry
Double top plates Equals twice the length of the wall
Studs
Must be kept separate by size and length
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Studs
Estimating
Review specification
Divide length by spacing
Add extra studs for:
Corners
Wall intersections
Wall openings
Add studs for gable ends
Corners
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Wall Intersections
Gable Ends
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Headers
Headers
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Headers
Exterior Wall Sheathing
May be:
Fiberboard, bituminous impregnated
Insulation board
Waferboard (OSB-Oriented Strand Board)
Plywood
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Ceiling Assembly
Includes:
Ceiling joists
Headers and trimmers
Bid same as floor joists
Not needed with trusses
Roof Assembly
Includes:
Rafters
Headers and trimmers
Collar ties
Ridge
Lookouts
Sheathing
Felt (may be included with roofing)
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Slope and Pitch
Rafters
Must take into account the slope of the roof
Estimating
Divide length by spacing
Handle openings the same as openings in floor or ceiling joists
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Rafter Length
Collar Ties and Ridge Board
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Ridge
Equals the length of the building plus any overhang
Lookouts
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Roof Sheathing
Be sure to take slope into account
Sketch sheathing as was done for subflooring and wall sheathing
Wood Trusses
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Wood Trusses
Wood Trusses
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Laminated Beams and Arches
Laminated Beams and Arches
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Exercise Given the length of the sole plate (12x12) is 30’ and height of
the 10x12 studs are 10’ placed at 2.5’ on center, find the amount of lumber needed for the studs if the door is 3.6’x 7.2’
