AWS EDITION 1, 2009

164

© 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 7 - Stairwork & Rails (Page 11 of 16)

PRODUCT

MATERIAL, MACHINING, AND ASSEMBLY RULES (continued)

DESCRIPTION E C P



4.4

A S S E M B L Y

ASSEMBLY (continued)



4.4.1

JOINTS at ASSEMBLED WOODWORK shall (continued)



4.4.1.12

At HPDL and PVC, edges shall be machined flush (continued)



4.4.1.12.3

REMOVAL of color or pattern of face material due to (continued)

4.4.1.12.3.2 1/16" x 1-1/2" (1.6 mm x 38.1 mm) and shall not occur within 60" (1524 mm) of a similar occurrence. M

4.4.1.12.3.3 1/16" x 4" (1.6 mm x 102 mm) and shall not occur within 72" (1829 mm) of a similar occurrence. M

4.4.2 APPLIED MOLDINGS shall be spot-glued and mechanically fastened.

4.4.3 MITER JOINTS shall be well fitted and cleaned.

4.4.4 BUILT-UP ITEMS shall be soundly fabricated with half-lapped, mitered, shoulder-mitered, tonged, or equivalent

construction.

4.4.5 STAIRWORK shall be furnished KD (knocked down), with:

4.4.5.1 TRIM MEMBERS cut to required length plus allowance for fitting.

4.4.5.2 STARTING STEPS with returned riser assembled ready for installation.

4.4.5.3 SCOTIA and shoe molds temporarily attached.

4.4.5.4 BALUSTERS for open-string stairs shall be provided with dowel or tenon to fit into treads.

4.4.5.5 CROOKS and RETURNS shall be doweled and provided with rail bolts ready for assembly.

4.4.5.6 GLUE BLOCKS shall be provided at 12" (305 mm) on center maximum for each riser.

EXECUTION

5 PREPARATION & QUALIFICATION REQUIREMENTS (unless otherwise specified)

5.1 CARE, STORAGE, and BUILDING CONDITIONS shall be in compliance with the requirements set forth in Section 2

of these standards.

5.1.1 Severe damage to the woodwork can result from noncompliance. THE MANUFACTURER AND/OR INSTALLER

OF THE WOODWORK SHALL NOT BE HELD RESPONSIBLE FOR ANY DAMAGE THAT MIGHT DEVELOP

BY NOT ADHERING TO THE REQUIREMENTS.

5.2 CONTRACTOR IS RESPONSIBLE FOR:

5.2.1 Furnishing and installing structural members, grounds, blocking, backing, furring, brackets, or other anchorage

required for architectural woodwork installation that becomes an integral part of walls, floors, or ceilings to

which architectural woodwork shall be installed.

5.2.1.1 In the absence of contract documents calling for the contractor to supply the necessary blocking/

backing in the wall or ceilings, either through inadvertence or otherwise, the architectural woodwork

installer shall not proceed with the installation until such time as the blocking/backing is installed by

others.

5.2.1.2 Preparatory work done by others shall be subject to inspection by the architectural woodwork

installer, and shall be accepted or rejected for cause prior to installation.

5.2.1.2.1 WALL, CEILING, and/or opening variations in excess of 1/4" (6.4 mm) or FLOORS in

excess of 1/2" (12.7 mm) in 144" (3658 mm) of being plumb, level, flat, straight, square,

or of the correct size are not acceptable for the installation of architectural woodwork, nor

is it the responsibility of the installer to scribe or fit to tolerances in excess of such.

7