AWS EDITION 1, 2009

66 © 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 3 - Lumber (Page 17 of 18)

PRODUCT

LUMBER RULES (continued)

These rules are not intended to create a lumber grade; they are only intended to establish the acceptable requirements

and/or characteristics after the architectural woodwork is completed or installed.

DESCRIPTION E C P



4.2b

S O F T W O O D 

MATERIAL - SOFTWOOD (continued)



4.2b.7

T R A N S P A R E N T 

TRANSPARENT FINISH (continued)



4.2b.7.3

NATURAL CHARACTERISTIC LIMITATIONS (continued)

4.2b.7.3.5 NONE in any face smaller than 900 sq. in. (22860 sq. mm), with: M

4.2b.7.3.5.1

ONE permitted for each additional 400 sq. in.

(10160 sq. mm) M

4.2b.7.3.6 A maximum of TWO, with: M

4.2b.7.3.6.1 NO(1219 mm) of one another knots, pitch streaks, or pitch pockets within 48" M

4.2b.7.4

A L L O W A N C E S 

NATURAL CHARACTERISTIC ALLOWANCES at interior or exterior use:

4.2b.7.4.1 BARK POCKET - None

4.2b.7.4.2 BIRDSEYE, Sound - Unlimited

4.2b.7.4.3 BIRDSEYE, Checked

4.2b.7.4.3.1 Unlimited M

4.2b.7.4.3.2 < 10% of face M

4.2b.7.4.3.3 None M

4.2b.7.4.4 BURL, Sound

4.2b.7.4.4.1 < 3/4" (19 mm) in diameter M

4.2b.7.4.4.2 < 5/8" (16 mm) in diameter M

4.2b.7.4.4.3 < 1/2" (13 mm) in diameter M

4.2b.7.4.5 CHECK

4.2b.7.4.5.1 < 3/32" (2 mm) wide x 8" (203 mm) long M

4.2b.7.4.5.2 < 1/16" (2 mm) wide x 6" (152 mm) long M

4.2b.7.4.5.3 < 1/32" (1 mm) wide x 4" (102 mm) long M

4.2b.7.4.6 HONEYCOMB - None

4.2b.7.4.7 KNOT, Sound and Tight

4.2b.7.4.7.1 < 3/4" (19 mm) in diameter M

4.2b.7.4.7.2 < 1/2" (13 mm) in diameter M

4.2b.7.4.7.3 < 1/4" (6 mm) in diameter M

4.2b.7.4.8 KNOT, Checked

4.2b.7.4.8.1 < 1/2" (13 mm) in diameter M

4.2b.7.4.8.2 < 1/4" (6 mm) in diameter M

4.2b.7.4.8.3 None M

4.2b.7.4.9 MINERAL STAIN

4.2b.7.4.9.1 Unlimited M

4.2b.7.4.9.2 < 10% of face M

4.2b.7.4.9.3 None M

4.2b.7.4.10 PATCH

4.2b.7.4.10.1 < 1-1/2" (38 mm) wide x 3-1/2" (89 mm) long, and

inconspicuous from 60"

M

4.2b.7.4.10.2 < 1-1/2" (38 mm) wide x 3-1/2" (89 mm) long, and

inconspicuous from 36"

M

4.2b.7.4.10.3 None M

3