AWS EDITION 1, 2009

308

© 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/

PRODUCT

MATERIAL, MACHINING, AND ASSEMBLY RULES (continued)

DESCRIPTION E C P



4.4

A S S E M B L Y 

ASSEMBLY (continued)

4.4.13

METAL TRIM RIMS (furnished by others) at sinks or self-rimming sinks must overlap the countertop

and/or sink by a minimum of 3/16" (4.8 mm).

4.4.14

W

O

O

D



At WOOD:

4.4.14.1 Requires FLUSHNESS VARIATIONS at exposed surfaces when mitered or butted (see Test D

illustrations in COMPLIANCE) not to exceed:

4.4.14.1.1 0.025" (0.6 mm) M

4.4.14.1.2 0.005" (0.1 mm) M

4.4.14.1.3 0.001" (0.03 mm) M

4.4.14.2 Requires GAPS at exposed surfaces when mitered or butted (see Test A illustrations in

COMPLIANCE) not to exceed:

4.4.14.2.1 0.05" (1.3 mm) wide by 20% of the joint length. M

4.4.14.2.2 0.025” (0.6 mm) wide by 20% of the joint length. M

4.4.14.2.3 0.015" (0.4 mm) wide by 20% of the joint length. M

4.4.14.3 Requires GAPS at exposed surfaces at parallel members (see test B illustrations in COMPLIANCE)

not to exceed:

4.4.14.3.1 0.05” x 8” (1.3 mm x 203 mm) and shall not occur within 48" (1219 mm) of a similar gap. M

4.4.14.3.2 0.025” x 6” (0.6 mm x 152 mm) and shall not occur within 60"

(1524 mm) of a similar gap.

M

4.4.14.3.3 0.015” x 3” (0.4 mm x 76 mm) and shall not occur within 72" (1829 mm) of a similar gap. M

4.4.14.4 Requires GAPS at exposed surfaces when mitered or butted (see Test C illustrations in

COMPLIANCE) not to exceed:

4.4.14.4.1 0.05" (1.3 mm) M

4.4.14.4.2 0.025" (0.6 mm) M

4.4.14.4.3 0.015" (0.4 mm) M

4.4.14.5 Requires FLATNESS of installed and removable sheet products (see Test E illustrations in

COMPLIANCE) not to exceed:

4.4.14.5.1 0.050" (1.3 mm) per 12" (305 mm) or portion thereof. M

4.4.14.5.2 0.036" (0.9 mm) per 12" (305 mm) or portion thereof. M

4.4.14.5.3 0.027" (0.7 mm) per 12" (305 mm) or portion thereof. M

4.4.14.6 JOINTS:

4.4.14.6.1 At L-shaped tops shall have an approximate 45º diagonal joint; butt joints are not permitted.

4.4.14.6.2 INSTALLATION JOINTS shall be fit tight and flush with the use of splines, dowels, or

biscuits for alignment, and:

4.4.14.6.2.1 Be securely fastened with draw-bolt-type mechanical fasteners, if practical.

4.4.14.6.3 Utilize clamp nail, biscuit, butterfly, scarf, or dowel joinery. M

4.4.14.6.4 Utilize biscuit spline, butterfly, scarf, or dowel joinery. M

4.4.14.7 CANTILEVER, with or without a sub-top, shall not exceed 12” (305 mm) from a support, whether in

the front, back, or end.

4.4.14.8 Where alternately set with crown up and crown down.WIDE WIDTH GLUE-UP is used, boards exceeding 3” (76 mm) in width shall be

4.4.14.9 Solid wood edges and applied moldings shall be:

4.4.14.9.1 Nailed. M

Section 11 - Countertops (Page 13 of 25)

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