AWS EDITION 1, 2009

327

© 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

4.3

M A C H I N I N G

MACHINING

4.3.1 Shall COMPLY with Sections 3 - 11, as applicable, and any modifications by the plans and specifications.

4.3.2 Machine new and replacement woodwork to dimensions, profiles, and details to MATCH EXISTING.

4.3.3

Where EXISTING MOLDINGS are hand-made and not necessarily uniform in profile, replacement moldings

shall be profiled to an agreed representative sample.

4.3.4 All machine work shall be of excellent quality, with all exposed (visible) surfaces SMOOTHLY SANDED.

4.3.5

E X P O S E D

Of EXPOSED SURFACES shall comply with the following smoothness requirements:

4.3.5.1 SHARP EDGES shall be eased with a fine abrasive.

4.3.5.2

TOP FLAT WOOD surfaces; those that can be sanded with a drum or wide belt sander shall be

150-grit sanded.

4.3.5.3 MOLDED, TURNED, and shaped WOOD surfaces shall be 120-grit sanded.

4.3.5.4 CROSS-SANDING, excluding turned surfaces, is not allowed.

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

4.3.5.6 KNIFE MARKS are not permitted where sanding is required.

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

4.4

A S S E M B L Y 

ASSEMBLY

4.4.1 Shall COMPLY with Sections 3 - 11, as applicable, and any modifications by the plans and specifications.

4.4.2 PLYWOOD BACKING may be used in the fabrication of built-up panel assemblies, door and/or window frames,

and stacked base trim, provided the exposed profile and configuration matches existing.

4.4.3

J O I N T S 

Of JOINTS at ASSEMBLED WOODWORK shall:

4.4.3.1 Be neatly and accurately made.

4.4.3.2 Be SECURELY GLUED, with:

4.4.3.2.1 ADHESIVE residue removed from all exposed and semi-exposed surfaces.

4.4.3.3 Be REINFORCED with glue blocks where essential.

4.4.3.4 Be MECHANICALLY FASTENED with nails or screws where practical, with:

4.4.3.4.1 Fasteners at solid wood countersunk.

4.4.3.4.2 Fasteners at solid wood in molding quirks or reliefs where possible.

4.4.3.5 Require COMPLIANCEFLATNESS) not to exceed 0.027” (0.7 mm) per 12” (305 mm) or portion thereof. of installed and removable sheet products (see Test F illustrations in

4.4.3.6 Require FLUSHNESS VARIATIONS at exposed surfaces when mitered or butted (see Test D

illustrations in COMPLIANCE) not to exceed:

4.4.3.6.1 At INTERIOR, 0.001” (0.03 mm).

4.4.3.6.2 At EXTERIOR, 0.015” (0.4 mm).

4.4.3.7 Require GAPS at exposed surfaces when mitered or butted (see Test A illustrations in

COMPLIANCE) not to exceed:

4.4.3.7.1 At INTERIOR, 0.15” (0.4 mm) wide by 20% of the joint length.

4.4.3.7.2 At EXTERIOR, 0.025” (0.6 mm) wide by 30% of the joint length.

4.4.3.8 Require GAPS at exposed surfaces at parallel members (see Test B illustrations in COMPLIANCE)

not to exceed:

4.4.3.8.1 At of a similar gap.INTERIOR, 0.015” x 3” (0.4 mm x 76 mm) and shall not occur within 72” (1829 mm)

4.4.3.8.2 At of a similar gap.EXTERIOR, 0.025” x 6” (0.6 mm x 152 mm) and shall not occur within 30” (762 mm)

Section 12 - Historic Restoration Work (Page 6 of 12)

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