82 © 2009, AWI, AWMAC, WI - Architectural Woodwork Standards - 1st Edition, October 1, 2009
As may be updated by errata at http://www.awinet.org, http://www.awmac.com, or http://www.woodworkinstitute.com/awserrata/Section 4 - Sheet Products (Page 13 of 31)
PRODUCT
SHEET PRODUCT RULES (continued)
These rules are not intended to create a face grade; they are intended only to establish the acceptable requirements and/
or characteristics after the architectural woodwork is completed or installed.DESCRIPTION E C P
4.1
G E N E R A L
GENERAL (continued)
4.1.4REFERENCE STANDARDS (continued)4.1.4.5 Thermally Fused Overlay (Melamine or Polyester ) - NEMA - LD-3 (latest edition) for facecharacteristic only.4.1.4.6 High-Pressure Laminate (HPDL) - NEMA - LD-3 (latest edition)
4.1.4.7 Hardboard - ANSI A135.4 (latest edition)
4.1.4.8 Particleboard - ANSI 208.1 (latest edition) - Grade M2 or better
4.1.4.9 Medium-Density Fiberboard (MDF) - ANSI A208.2 (latest edition)
4.1.4.10 Oriented Strand Board (OSB) - APA PS-2 (latest edition)
4.1.5 Additional REQUIREMENTS, if so specified:
4.1.5.1 FIRE-RETARDANT CORE, which:
4.1.5.1.1 If particleboard, shall be dyed red4.1.5.2MOISTURE-RESISTANT CORE, which:
4.1.5.2.1 If particleboard, shall be dyed green
4.1.5.3 WATERPROOF ADHESIVE
4.1.6 PANEL LAY-UP
4.1.6.1 Shall be for interior use, unless specified otherwise.
4.1.6.2 Shall be constructed with an odd number of plies.4.1.6.3Requires BALANCED CONSTRUCTION of faces, thickness, and moisture content to
produce a warp-free panel suitable for its intended use.
4.1.6.4 Shall have a rigid glue line, and:4.1.6.4.1
DELAMINATION or SEPARATION shall not occur that exceeds
2" (50.8 mm) in length, 1/4" (6.4 mm) in depth, or 0.003" (0.08 mm) in
width.
4.1.6.5 Shall NOT USE CONTACT ADHESIVE unless there is no other alternative, and if used:
4.1.6.5.1 Shall be spray-applied.
4.1.6.5.2 Wood face veneers shall have a backer or barrier.
4.1.6.6 Requires cores of veneer, lumber, composition, or a combination thereof, and:
4.1.6.6.1 Veneer core shall not be used for cabinet-door or drawer-front components.4.1.6.7 SURFACEor ridges in the exposed face veneer, shall not occur. distortions or defects, such as bubbling, blistering, cracking, crazing, telegraphing,4.1.7 THICKNESS TOLERANCE shall be as established by HPVA.
4.1.7.1 +0/-1/32" (0 / 0.8 mm) for nominal thickness up to 1/4" (6 mm)
4.1.7.2 +0/-3/64" (0 / 1.2 mm) for nominal thickness of 1/4" (6 mm) or more
4.1.8 SQUARENESS TOLERANCE shall be as established by HPVA.
4.1.8.1 +0/-3/32" (0 / 2.4 mm) for panels larger than 48" x 48" (1220 mm x 1220 mm)
4.1.8.2 +0/-1/16" (0 / 1.6 mm) for panels smaller than 48" x 48" (1220 mm x 1220 mm)
4.1.9 STRAIGHTNESS TOLERANCE shall be as established by HPVA.
4.1.9.1 +0/-1/16" (0 / 1.6 mm) for edges up to 96" (2440 mm) in length
4.1.9.2 +0/-3/32" (0 / 2.4 mm) for edges longer than 96" (2440 mm) in length4