AWS EDITION 1, 2009

159

© 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 6 of 16)

PRODUCT

MATERIAL, MACHINING, AND ASSEMBLY RULES (continued)

DESCRIPTION E C P



4.2

M A T E R I A L 

MATERIAL (continued)

4.2.10

R A D I U S

Requires radiused woodwork to be constructed of solid-machined, block-laminated, laminated plies, core-

veneered, or kerfed solid stock and:

Solid-machined Block-laminated Laminated Plies Core-veneered Kerfed Solid Stock

4.2.10.1

Members of solid stock or block laminations shall be furnished in such sections as to avoid

pronounced cross grain and reduce joints to a minimum.

4.2.10.2 GLUE shall be selected for color to avoid a prominent glue line.

4.2.11 For SPANDREL and SOFFIT PANELS shall conform to the requirements of Section 8.

4.2.12

E X P O S E D S U R F A C E S 

At EXPOSED SURFACES:

4.2.12.1 Requires end grain to be kept to a minimum. MM

4.2.12.2

Requires ends to be self-returned with no end grain showing.

M

4.2.12.3 Permits medium-density fiberboard (MDF) for opaque finish.

4.2.12.4 Requires sheet product edges to be banded with the same species as the face. MM

4.2.12.5 Requires plain-sliced veneer for transparent finish.

4.2.12.6 Permits mill-option veneer for opaque finish.

4.2.12.7

T R A N S P A R E N T 

For TRANSPARENT FINISH:

4.2.12.7.1 Permits hardwood or softwood.

4.2.12.7.2 Permits only one species for the entire project. MM

4.2.12.7.3 Prohibits finger joints. MM

4.2.12.7.4 Requires adhesive, used for laminating, to be selected for color to avoid a

prominent glue line.

MM

4.2.12.7.5 Requires lumber (including block segments or veneer of laminated

material) and sheet products to be compatible in color and grain.

M

4.2.12.7.6

Requires lumber (including block segments or veneer of laminated

material) to be well-matched for color and grain; sheet products shall be

compatible in color with solid stock, and adjacent sheet products shall be

well-matched for color and grain.

M

4.2.12.7.7 Requires INTERSECTIONS of radius and straight members to be splined

or half-lapped, securely glued, and mechanically fastened.

MM

4.2.12.7.8 At BLOCK LAMINATION:

4.2.12.7.8.1 Requires segments to be cut from the same board. M

4.2.12.7.8.2 Requires segment joints to be staggered.

4.2.12.7.8.3 Requires adjacent segment ends have similar grain angle. MM

4.2.12.7.9 At VENEER LAMINATIONS:

4.2.12.7.9.1 Requires exposed layers to be resawn from the same or matched boards. M

4.2.12.7.9.2 Requires veneer layers to be reassembled in the same order and orientation as cut. M

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