Standard Guide for Evaluation of Exterior Building Wall Materials, Products, and Systems
4.1 This guide may be used by design professionals and others in the building construction industry to provide factual support for professional judgment of materials, products, or systems during the design development of new and remedial exterior building wall construction.
4.2 This guide is intended to provide guidance to the user of this standard in the evaluation and qualification of materials, products, or systems with which they do not have substantial, long-term experience or that are intended to be employed in a new or different manner. The standard may be used to investigate and assess the probable performance of such materials, products, or systems in relation to the proposed use on or as part of an exterior building wall.
4.3 The procedures outlined in Section 5 will help guide the user in making informed selections based on the materials, products, or systems performance history on constructed projects and provide information on limitations of use, the manufacturer's performance history, and current status. The use of this guide will reduce, but not eliminate, the risk of in-service performance problems with materials, products, or systems.
4.4 The procedures listed in this standard are intended for use in selecting materials, products, or systems that are critical to the safety, function, or serviceability of a building, or where they constitute substantial components of the work. The recommendations in this guide are not applicable to all materials, products, or systems that can be incorporated in buildings. The user must exercise appropriate judgment and care regarding the need when applying the various procedures included in this guide, including the use of the form included in Appendix X1, with regard to particular materials, products, or systems, and specific buildings. Materials, products, or systems that will be used for a noncritical or incidental use usually do not require an exhaustive evaluation. Materials, products, or systems with which the user has first-hand experience do not generally require an exhaustive evaluation since many of the evaluation tasks listed herein should have been performed previously.
4.5 Appendix X1 is provided for the user of this guide as a tool in organizing their thoughts and approach to application of the guide. It may also provide useful documentation to the user for both the building under current consideration and as a future reference for other buildings. Other forms of documentation may be developed by contract agreements or requirements of authorities having jurisdiction.
Note 1: Often components of exterior building wall construction are tested in the laboratory to help assure adequate performance. Laboratory evaluation of materials, products, or systems is not described in this guide.
1.1 This guide covers guidance to design professionals in the evaluation of materials, products, or systems with which they are not familiar and to help determine that the selected materials, products, or systems are suitable for use on or as a part of an exterior building wall.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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