AAMA Releases New Curtainwall Manual With Updated Design Criteria

The American Architectural Manufacturers Association (AAMA) has developed a new manual providing guidelines for the design of curtainwalls. Publication of AAMA CWM-19, the “Curtain Wall Manual,” marks the culmination of efforts by volunteers from AAMA Curtain Wall/Storefront Council member companies to update and enhance the former AAMA MCWM1-89, the “Metal Curtain Wall Manual.” It also incorporates content from several other related AAMA publications for ease of access.

“New curtainwall guide specifications are expected to be of particular interest,” says Steve Fronek (Wausau Window and Wall Systems), a leader within the AAMA Curtain Wall Manual Update Task Group. “Formatted to include mandatory language, optional language and detailed technical commentary, guide specifications in Section 5 allow architects and specifiers to address project-specific performance and testing requirements consistently.”

Targeting manufacturers, architects, specifiers, contractors and testing agencies, AAMA CWM-19 covers many aspects of curtainwall design, specification, testing and installation with information presented in eight sections.

New content includes detailed fabrication and installation tolerances, as well as air barrier interface guidelines. Significant updates were made to reference documents, material engineering properties, specification language, laboratory testing overview information and weatherability requirements. Design criteria addressed in other AAMA documents, including noise attenuation, thermal performance and condensation control, are covered at a high level.


Trucking Industry Regulation Revisions Proposed

A recent notice of proposed rulemaking could change hours of service rules for commercial motor vehicle drivers, including those who transport glass. According to the U.S. Department of Transportation’s Federal Motor Carrier Safety Administration (FMCSA), the rule seeks to give drivers more flexibility and maintain safety limits on driving time while saving the U.S. economy $274 million.

None of the revisions would increase driving time, according to the FMCSA,
meaning they won’t have an impact on flat glass delivery times.

YKK AP’s manager of transportation and logistics Dennis Howard says, “Neither proposed change increases driver’s overall available drive time, but offers the driver much greater flexibility should he/she experience traffic or other delays. These proposed changes seem to be very positive for drivers/ carriers as they enhance flexibility with regards to breaks and off-duty time.”

The comment period for the notice of proposed rulemaking closes October
7, 2019.

New Laminated Glazing Reference Manual Available

A recent update to the Laminated Glazing Reference Manual from the National Glass Association (NGA) replaces the original 2009 Glass Association of North America edition. The Laminated Glazing Reference Manual presents technical and performance data, as well as installation guidelines for laminated glass products.

The 2019 edition includes the latest information on laminating interlayers as well as in-depth discussions on the variety of applications in which laminated architectural glass may be used such as safety, solar, sound, security and more, according to the association.

“The Laminated Glass Reference Manual is the most up-to-date compilation
of industry consensus documentation on laminated glass use, performance and specification,” says task group chair Julia Schimmelpenningh, Eastman Chemical Co. “An evergreen document, users can expect current information on standards and their applicability, performance data that has been backed up by supporting peer reviewed documentation and introductions to new uses for laminated glass.

Updates on laminated glass strength, cutting, handling and installation are highlighted. This edition also features a comprehensive listing of standards applicable to laminated glass.

According to Urmilla Sowell, advocacy and technical director, “safety and durability performance considerations are primary considerations in compiling this information and presenting it in an industry consensus, technically-advanced manner.”

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