ANSI/AWI SMA 0643-2021.
Wood Stair, Handrail, and Guard Systems
American National Standard
Approval of an American National Standard requires verification by the American National Standards Institute (ANSI) that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. An American National Standard implies a consensus of those substantially concerned with its scope and provisions.
Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered and that a concerted effort be made toward their resolution.
The existence of an American National Standard does not in any respect preclude anyone, whether they have approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards.
ANSI does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of ANSI. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard.
CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of ANSI require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards can receive current information on all standards by calling or writing ANSI.
NOTICE ON FORMAT AND STYLE: The format and style of this document differs from ANSI style as specified by the ANSI Style Manual for Preparation of Proposed American National Standards.
The information provided by the Architectural Woodwork Institute (“AWI”) in this document is intended solely for use by appropriately licensed and experienced professionals who have the necessary background to understand and interpret the information in accordance with generally accepted professional standards and regulations. AWI Standards provide the minimum criteria for the concept, design, fabrication, finishing, and installation of architectural woodwork. Provisions for mechanical and electrical safety are not included. References to life-safety requirements may be included but are not meant to be comprehensive. Improper application of the standards set forth herein may result in hazards to health and safety of installers, consumers, and others.
Wood products installed outside of climate controlled, interior environments are not governed by this standard.
Illustrations are intended to assist in understanding the standard and may not include all requirements for a specific product or unit, nor do they show the only method of fabrication. Such partial drawings shall not be used to justify improper or incomplete design and/or construction.
The Supplemental Materials are provided as an additional resource to the manufacturer, design professional, educator, user, or certifying organization.
This standard may include citations and quotes from other industry standards and guidelines that are neither developed nor published by AWI, which makes no representation as to the quality or efficacy of such other standards or guidelines.
AWI publishes the information provided in this document after undertaking reasonable inquiry regarding the subject matter. AWI publishes this standard in furtherance of its mission of benefiting the architectural woodwork and related interior finishes industry. All or any portion of this standard may be revised or withdrawn at any time. AWI standards are voluntary. AWI is not responsible for any results of use of this standard or performance of products used or created in connection with this standard. AWI makes no representation or warranty regarding the technical accuracy or sufficiency of the standard; nor does AWI represent or warrant that the standard conforms to any statute or regulation. AWI hereby disclaims any warranty of any kind, express or implied, with respect to the information contained herein, including merchantability or fitness for a particular purpose.
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