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ANSI Updates Single-Ply Roofing Standard

2/13/2020

ANSI/SPRI RP‐4 “Wind Design Standard for Ballasted Single‐Ply Roofing Systems” has been revised and reapproved as an American National Standard. The standard includes: information on performance of pavers when exposed to wind loads; guidance on the impact of the air space under the paver when using paver/pedestal systems; and guidance on design of ballasted systems for buildings over 150’ feet in height. Click here for more information.




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