AWS EDITION 1, 2009

© 2009, AWI, AWMAC, WI - Architectural Woodwork Standards - 1st Edition, October 1, 2009 55

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 6 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



4.2

MATERIAL (continued)



4.2.2

FINISHED WIDTH (continued)

4.2.2.9 Nominal 12" (305 mm) = 11" (279 mm)

4.2.2.10 Nominal 12+" (305+ mm) = 1" (25 mm) less than nominal size

Finished

Width

Nominal Width

4.2.3 When MACHINE SANDED, a reduction of 1/32" (1 mm) off the above thicknesses or widths is permitted.

4.2a

H A R D W O O D 

MATERIAL - HARDWOOD

4.2a.1 Rules shall apply only to the following species:

ALDER LAUAN OAK, WHITE

ASH MAHOGANY, HONDURAS POPLAR

BIRCH MAPLE, HARD & SOFT TEAK

CHERRY, AMERICAN OAK, RED WALNUT, AMERICAN

4.2a.1.1

For SPECIES NOT LISTED, length requirements and size/exposed area of permitted natural

characteristics shall be as agreed to between owner/design professional and manufacturer/

installer.

4.2a.2 GLUING for thickness is permitted when finished dimensions exceed 1-1/6" (27 mm).

4.2a.3 GLUING for width is permitted when finished dimensions exceed 6" (152 mm).

4.2a.3.1 Rift sawn White/Red Oak; quarter sawn White/Red Oak, Maple, and Walnut; and select White/Red

Birch, White Ash, and Cherry may be glued for width when exceeding 4-1/4" (184 mm).

4.2a.3.2 Direction of the end grain of boards glued for width shall be alternated.

4.2a.4 Lumber of the American and European Cherry).SAME SPECIES but of DIFFERENT ORIGINS shall not be mixed on a project (example:

4.2a.5 If only the generic term MAHOGANY is specified, it shall mean Honduras Mahogany.

4.2a.6 Specifications calling for natural Philippine species of wood.PHILIPPINE MAHOGANY shall permit the use of Lauan, Tanguile, and other

4.2a.7

OAK, RIFT GRAIN, shall permit twenty-five percent (25%) of the exposed surface area of each board to

contain medullary ray flake.

4.2a.8 ASH, BIRCH, and MAPLE shall permit both sapwood and heartwood in any board.

4.2a.9



MAXIMUM LENGTH REQUIREMENT for given width up to 1-1/2" (38.1 mm) in thickness shall be:

4.2a.9.1

Boards required to be longer than those listed as available may be glued for length or furnished in

multiple pieces.

4.2a.9.2



ALDER

4.2a.9.2.1 2" (51 mm) in width = 9'-10" (2997 mm)

4.2a.9.2.2 3" (76 mm) in width = 8'-10" (2692 mm)

4.2a.9.2.3 4" (102 mm) in width = 7'-6" (2286 mm)

3