Lumber & Wood
3 items
Standardized North American lumber and engineered wood dimensions: DOC PS 20 nominal vs actual surfaced dimensional framing lumber, DOC PS 1/PS 2 structural plywood and OSB panel thicknesses, and ANSI A190.1 Glulam architectural beam profiles.
Items
Dimensional Lumber Sizes (Nominal vs Actual)
Dimensional lumber sizes under the American Softwood Lumber Standard (DOC PS 20) define the difference between rough-sawn 'nominal' green lumber designations and finished 'actual' Surfaced 4-Sides (S4S) dry dimensions. A standard 2×4 measures exactly 1.5 × 3.5 inches (38 × 89 mm) following planing and kiln drying.
9 specs
Plywood & OSB Panel Thicknesses (DOC PS 1 / PS 2)
Structural wood panels including softwood plywood and Oriented Strand Board (OSB) are standardized under Voluntary Product Standards DOC PS 1 and PS 2. Sized in standard 4×8 ft (1219×2438 mm) sheets, panels are classified by 'Performance Category' thickness with a -1/32" decimal reduction, where a nominal 1/2" panel measures 15/32" (0.469" / 11.9 mm).
8 specs
Glulam Timber Beam Dimensions (ANSI A190.1)
Structural Glued Laminated Timber (Glulam) under ANSI A190.1 is an engineered heavy timber beam manufactured by face-bonding individual 2x softwood dimensional lumber laminations with structural adhesives. Featuring standardized widths of 3-1/8", 5-1/8", and 6-3/4" and depths in 1.5-inch increments, Glulam beams support spans exceeding 100 feet.
7 specs