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pdf - 92 KiB
DateJanuary 2, 2020
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PlatformsWindows 8
LicenseFreeware
SPRI, the association representing sheet membrane and component suppliers to the commercial roofing industry, announced that ANSI/SPRI RP-4 “Wind Design Standard for Ballasted Single-ply Roofing Systems” has been revised and reapproved as an American National Standard.