Building Materials.

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Presentation transcript:

Building Materials

Trees Softwoods (pine) - Framing Hardwoods (Oak, Walnut, Cherry, Mahogany) - Decorative finishing / furniture

Lumber Sawing Plainsawing Quartersawing

Seasoning 19% less is considered seasoned Wood is hygroscopic (cannot hold less than 13%) Air Drying vs. Kiln Drying

Surfacing S2S vs. S4S

Chemical Treatment Pressure Impregnation Moisture and Insect Resistance

Wood Fasteners Nails Screws and Lag Screws Bolts / Timber Connectors Common used for framing and sheeting 8d sheeting 16d framing Box – toe nailing and light work Casing – door and window frames Finish Brad Screws and Lag Screws Bolts / Timber Connectors Toothed Plates Sheet Metal and Metal Plate Framing Devices Adhesives

Toothed Plates

Wood Products Dimensional Lumber Wood Panel Products Plywood Composite Nonveneered OSB Fiberboard & Particleboard

Structural lumber for trusses, joists, & beams Laminated Veneer Lumber (LVL) Parallel Strand Lumber (PSL)

Plywood / OSB (oriented strand board) 4’ x 8’ (4 x 9’) Thickness – 1/8” to 1-1/2”

Lumber Dimensions Actual vs. Nominal 2x4 = 1-1/2 x 3-1/2 2x8 = 1-1/2 x 7-1/4 2x6 = 1-1/2 x 5-1/2 2x10 = 1-1/2 x 9-1/4

Sizes of building materials designed for ease of assembly 4” walls 6” walls Header Construction 16” stud/joist/truss spacing 24” stud/joist/truss spacing