AWS EDITION 1, 2009

64 © 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 15 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.6

O P A Q U E 

OPAQUE FINISH (continued)



4.2b.6.3

NATURAL CHARACTERISTIC LIMITATIONS (continued)

4.2b.6.3.2 NONE in any face smaller than 400 square inches

(10160 square mm), with: M

4.2b.6.3.2.1 ONEinches (3810 square mm) permitted for each additional 150 square M

4.2b.6.3.2.2 A maximum of FOUR M

4.2b.6.3.2.3 NO knots, pitch streaks, or pitch pockets within 24"

(610 mm) of one another.

M

4.2b.6.3.3 NONE in any face smaller than 600 square inches

(15240 square mm), with: M

4.2b.6.3.3.1 ONEinches (5080 square mm) permitted for each additional 200 square M

4.2b.6.3.3.2 A maximum of THREE M

4.2b.6.3.3.3 NO knots, pitch streaks, or pitch pockets within 36"

(914 mm) of one another.

M

4.2b.6.4

A L L O W A N C E S 

NATURAL CHARACTERISTIC ALLOWANCES at interior or exterior use:

4.2b.6.4.1 BARK POCKET - None

4.2b.6.4.2 BIRDSEYE, Sound - Unlimited

4.2b.6.4.3 BIRDSEYE, Checked and Filled - Unlimited

4.2b.6.4.4 BURL, Sound

4.2b.6.4.4.1 < 1" (25 mm) in diameter MM

4.2b.6.4.4.2 < 3/4" (19 mm) in diameter M

4.2b.6.4.5 CHECK, Filled

4.2b.6.4.5.1 < 3/32" (2 mm) wide x 9" (229 mm) long M

4.2b.6.4.5.2 < 1/16" (2 mm) wide x 7" (178 mm) long M

4.2b.6.4.5.3 < 1/32" (1 mm) wide x 5" (127 mm) long M

4.2b.6.4.6 HONEYCOMB - None

4.2b.6.4.7 KNOT, Sound and Tight

4.2b.6.4.7.1 < 1" (25 mm) in diameter M

4.2b.6.4.7.2 < 5/8" (16 mm) in diameter M

4.2b.6.4.7.3 < 3/8" (10 mm) in diameter M

4.2b.6.4.8 KNOT, Checked and Filled

4.2b.6.4.8.1 < 3/4" (19 mm) in diameter M

4.2b.6.4.8.2 < 1/2" (13 mm) in diameter M

4.2b.6.4.8.3 < 1/4" (6 mm) in diameter M

4.2b.6.4.9 MINERAL STAIN - Unlimited

4.2b.6.4.10 PATCH

4.2b.6.4.10.1 < 1-1/2" (38 mm) wide x 3-1/2" (89 mm) long M

4.2b.6.4.10.2 < 1-1/2" (38 mm) wide x 3-1/2" (89 mm) long, and

inconspicuous from 60"

MM

3