AWS EDITION 1, 2009

137

© 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 6 - Interior & Exterior Millwork (Page 16 of 31)

PRODUCT

MATERIAL, MACHINING, AND ASSEMBLY RULES (continued)

DESCRIPTION E C P

4.3

M A C H I N I N G 

MACHINING of:

4.3.1

E X P O S E D S U R F A C E S

EXPOSED SURFACES shall comply with:

4.3.1.1

S M O O T H N E S S

SMOOTHNESS REQUIREMENTS (see 7.1 in COMPLIANCE):

4.3.1.1.1 SHARP EDGES shall be eased with a fine abrasive. MM

4.3.1.1.2 TOP FLAT WOOD surfaces, those that can be sanded with a drum or wide belt

sander:

4.3.1.1.2.1 Minimum 15 KCPI or 100-grit sanding M

4.3.1.1.2.2 120-grit sanding M

4.3.1.1.2.3 150-grit sanding M

4.3.1.1.3 PROFILED and/or SHAPED WOOD surfaces:

4.3.1.1.3.1 Minimum 15 KCPI or 100-grit sanding M

4.3.1.1.3.2 Minimum 20 KCPI or 120-grit sanding M

4.3.1.1.3.3 120-sanding M

4.3.1.1.4 TURNED WOOD surfaces:

4.3.1.1.4.1 Minimum 15 KCPI or 100-grit sanding M

4.3.1.1.4.2 120-grit sanding M

4.3.1.1.4.3 180-grit sanding M

4.3.1.1.5 CROSS-SANDING, excluding turned surfaces:

4.3.1.1.5.1 Is not a defect. M

4.3.1.1.5.2 Is not allowed. MM

4.3.1.1.6 TEAR-OUTS, KNIFE NICKS, or HIT-OR-MISS machining is not permitted.

4.3.1.1.7 KNIFE MARKS are not permitted where sanding is required.

4.3.1.1.8

GLUE or FILLER, if used, shall be inconspicuous and match the adjacent surface for

smoothness.

4.3.2 TRIM to be applied on flat surfaces shall have the reverse side backed out. MM

4.3.2.1 Door and window trim over 2" (50.8 mm) in width with non-exposed ends shall be backed out. MM

4.3.3 SOLID-MACHINED and BLOCK-LAMINATED members shall be divided to minimize the exposure of cross

grain in the face of the member, and:

4.3.3.1

ANGLE of GRAIN at the face of the curved member shall not exceed 30 degrees,

unless a small part size requires otherwise.

30 o

90 o

Acceptable Unacceptable

MM

4.3.4 INTERSECTIONSmechanically fastened. at radius and straight members shall be splined or half-lapped, securely glued, and

4.3.5 DADOES shall completely house the male member throughout the entire length of the joint.

4.3.6 STANDING & RUNNING TRIM:

4.3.6.1 At1/4" (6.4 mm) deep, a maximum of 1-1/2" (38.1 mm) on center. EXTERIOR application,^ 5-1/4" (133.4 mm) and wider shall require kerfing, 1/8" (3.2 mm) wide by

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