Specifications

ASTM standard reference for residential roofing materials including asphalt shingles, metal panels, underlayment, and ice protection membranes.

A quick-reference framing fastener schedule based on common IRC residential connections including studs, plates, joists, rafters, and subfloor fastening.

Fastener types, sizes, and spacing requirements for structural wood panels (OSB and plywood) per IRC Table R602.3(1). Covers roof sheathing, wall sheathing, and floor sheathing nailing schedules.

Standard lumber grades per NLGA (National Lumber Grades Authority) and WCLIB rules, covering structural and appearance grades, MSR ratings, species groups, and grade stamps used for dimensional lumber in construction.

Veneer grade classifications for structural and appearance plywood per the U.S. Voluntary Product Standard PS 1-09. Covers face/back veneer grades A through D, exposure durability classifications, and group numbers.

Reference load tables for common beam types used in residential construction, including LVL, glulam, and steel W-shapes. Covers allowable uniform loads and maximum spans for standard configurations.

Allowable span tables for LVL beams, I-joists, and glulam beams under standard residential loading conditions. Includes floor joist spans, beam spans, and header spans.

APA-rated structural panel span ratings for roof sheathing and subflooring. Shows maximum support spacing by panel span rating and thickness.