T he second edition of AAMA/WDMA/CSA 101/I.S.2/A440, NAFS — North American Fenestration Standard/Specification for windows, doors, and skylights — is available for electronic download from the American Architectural Manufacturers Association (AAMA). This standard/specification supersedes the previous edition, published in 2005 under the title AAMA/WDMA/CSA 101/I.S.2/A440-05 Standard/Specification for windows, doors, and unit skylights and is expected to be referenced in the 2009 versions of the ICC Building Codes.
The version incorporates significant changes from the previous edition, including a reduction in the number of window and door performance classes from five to four by elimination of Classes C and HC and the addition of a new class identified as CW.
The edition introduces an option whereby a product is permitted to enter Performance Class R by testing a specimen of an alternative minimum test size smaller than the gateway test size specified in Table 27, provided that the minimum performance grade (PG) is correspondingly increased (see Clause 9 for details).
Relating to door force-to-latch performance, the standard/specification now references the revised AAMA 925-07, Specification for Determining the Vertical Loading Resistance of Side-Hinged Door Leaves and excludes any separate discussion of force-to-latch requirements.
Clarification of the meaning of, and difference between, design pressure (DP) and performance grade (PG) has been made, and the primary designators for design pressure (DP), performance grade (PG), and size tested have been revised. In addition, standards for tubular daylighting devices (TDDs) have been added.
The product is available to members for $25 for electronic download. Non-members may purchase the document for $50 for download. Hard copies will be available. n
To order AAMA/WDMA/CSA 101/I.S.2/A440-08, visit the AAMA Online Publication Store at www.aamanet.org, call (847) 303-5664; or write the American Architectural Manufacturers Association, 1827 Walden Office Square, Suite 550, Schaumburg, IL 60173.