AWS EDITION 1, 2009

© 2009, AWI, AWMAC, WI - Architectural Woodwork Standards - 1st Edition, October 1, 2009 61

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 12 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



4.2a

H A R D W O O D 

MATERIAL - HARDWOOD (continued)



4.2a.11

T R A N S P A R E N T 

TRANSPARENT FINISH (continued)



4.2a.11.3

NATURAL CHARACTERISTIC LIMITATIONS (continued)

4.2a.11.3.6 For: CHERRY, American RED & WHITE OAK, Rift/Quarter Sawn

WALNUT, American

4.2a.11.3.6.1 NONE in any face smaller than 150 square inches

(3810 square mm), with: M

4.2a.11.3.6.1.1

ONE permitted for each

additional 75 square inches

(1905 square mm)

M

4.2a.11.3.6.2 NONE in any face smaller than 200 square inches

(5080 square mm), with:

M

4.2a.11.3.6.2.1

ONE permitted for each

additional 100 square inches

(2540 square mm)

M

4.2a.11.3.6.3 NONE in any face smaller than 300 square inches

(7620 square mm), with: M

4.2a.11.3.6.3.1

ONE permitted for each

additional 150 square inches

(3810 square mm)

M

4.2a.11.4

A L L O W A N C E S 

NATURAL CHARACTERISTIC ALLOWANCES at interior or exterior use:

4.2a.11.4.1 BARK POCKET - None

4.2a.11.4.2 BIRDSEYE, Sound - Unlimited

4.2a.11.4.3 BIRDSEYE, Checked

4.2a.11.4.3.1 Unlimited M

4.2a.11.4.3.2 < 10% of face M

4.2a.11.4.3.3 None M

4.2a.11.4.4 BURL, Sound

4.2a.11.4.4.1 Unlimited M

4.2a.11.4.4.2 < 1" (25 mm) in diameter M

4.2a.11.4.4.3 < 1/2" (13 mm) in diameter M

4.2a.11.4.5 CHECK

4.2a.11.4.5.1 < 3/32" (2 mm) wide x 8" (203 mm) long M

4.2a.11.4.5.2 < 1/16" (2 mm) wide x 6" (152 mm) long M

4.2a.11.4.5.3 < 1/32" (1 mm) wide x 4" (102 mm) long M

4.2a.11.4.6 HEARTWOOD, in Select White Ash, Birch, and Maple - None

4.2a.11.4.7 HONEYCOMB - None

4.2a.11.4.8 KNOT, Sound and Tight

4.2a.11.4.8.1 < 3/8" (10 mm) in diameter M

4.2a.11.4.8.2 < 1/4" (6 mm) in diameter M

4.2a.11.4.8.3 < 1/8" (3 mm) in diameter M

3