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Wfcm manual8/31/2023 ![]() ![]() Revised provisions for roof rake overhangs at gable ends.Updated fastener criteria to coordinate with 2018 National Design Specification® (NDS®) for Wood Construction including provisions for roof sheathing ring shank (RSRS) nails and fastener head pull-through design values. ![]() ![]() The inclusion of lower wind speed categories (e.g., 90, 95, 100, and 105 mph) to coordinate with ASCE/SEI 7-16.Updated wind loads from ASCE/SEI 7-10 to ASCE/SEI 7-16.Primary changes to the 2018 WFCM are listed here, and major topics are subsequently covered in more detail: A range of structural elements is covered, including sawn lumber, structural glued laminated timber, wood structural panel sheathing, I-joists, and trusses. The WFCM includes design and construction provisions for connections, wall systems, floor systems, and roof systems. 90-195 mph 3-second gust basic wind speeds for risk category II buildings.The majority of changes to the 2018 WFCM reflect increased C&C wind pressures in ASCE/SEI 7-16. ![]()
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