AWS EDITION 1, 2009

© 2009, AWI, AWMAC, WI - Architectural Woodwork Standards - 1st Edition, October 1, 2009 97

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 28 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



4.2e

MATERIAL - VINYL FILM (continued)

4.2e.5

Not have SURFACE APPEARANCE affected when exposed to the following agents:

Water Coffee Olive Oil Beet Juice Vinegar

Alcohol Mustard Shoe Polish Mercurochrome Washable Inks

Crayon Tea Household Detergents and Soaps

MM

4.2f

M

D

O

MATERIAL - MDO (Medium-Density Overlay) shall:

4.2f.1 Be (in conformance with APA PS1 [latest edition]) a thermosetting phenolic resin-impregnated cellulose fiber

sheet or sheets containing not less than 34% phenolic resin after pressing.

4.2f.2 Have CORE option with manufacturer, within the provisions of these standards.

4.2f.3 Have BALANCE SHEET.

4.2g

H

D

O

MATERIAL - HDO (High-Density Overlay) shall:

4.2g.1 Be (in conformance with APA PS1 [latest edition]) a thermosetting phenolic resin-impregnated cellulose fiber

sheet or sheets, not less than 0.012" (0.30 mm) in thickness after pressing.

4.2g.2 Be suitable for painting.

4.2g.3 Be allowed in lieu of paint-grade wood veneer for opaque finish.

4.2g.4 Have CORE option with manufacturer, within the provisions of these standards.

4.2g.5 Have BALANCE SHEET.

4.2h

H A R D B O A R D

MATERIAL - HARDBOARD shall:

4.2h.1 Be (in conformance with CAP/ANSI A135.4 [latest edition]) a panel manufactured of interfelted

lignocellulosic fibers, consolidated under heat and pressure to a density of 31 lb/ft^3 or greater with the

following minimum performance properties based on 1/4" (6.4 mm) thickness:

4.2h.1.1

STANDARD GRADE:

PROPERTY PERFORMANCE

Water Absorption 25% Maximum

Thickness Swelling 20% Maximum

Modulus of Rupture 4500 psi

Tensile Strength - Parallel 2200 psi

Tensile Strength - Perpendicular 90 psi

M

4.2h.1.2

TEMPERED GRADE:

PROPERTY PERFORMANCE

Water Absorption 20% Maximum

Thickness Swelling 15% Maximum

Modulus of Rupture 6000 psi

Tensile Strength - Parallel 3000 psi

Tensile Strength - Perpendicular 130 psi

MM

4.2i MATERIAL - BALANCE SHEET shall be:

4.2i.1 WOOD VENEER of the same or a compatible species and thickness.

4.2i.2 HPDL of a compatible thickness.

4.2i.3 OVERLAY of a compatible thickness.

4.2j



MATERIAL - BACKER shall be:

4.2j.1 Brown-colored, minimum 0.002" (0.05 mm) thick, factory-applied, hot-melt coating of blended

wax petroleum, copolymer resins, and anti-oxidants with swipe-controlling agents.

M

4.2j.2 Polyester or melamine overlay. M

4