The material used to construct roof decks, and the methods used to attach the deck to the roof framing members can influence the likelihood of failure in high winds. •Attachment A – Plywood/OSB roof sheathing attached to roof trusses/rafters by 6 penny nails (2” x 0.131” diameter) or greater which are properly spaced at a maximum of 6” along the edge and 12” in the field on 24” truss/rafter spacing. OR Batten decking or Skipped decking (typically used on roof decks supporting wood shakes or wood shingles). OR Any system of screws, nails, adhesives, other roof deck fastening systems or truss/rafter spacing that has an equivalent mean uplift resistance of 55 pounds per square foot or more as evidenced by laboratory uplift tests on & full size sheets of plywood/OSB. •Attachment B – Plywood/OSB roof sheathing with a minimum thickness of 1/2" attached to roof trusses/rafters by 8 penny (2.5” x 0.131” diameter) nails or greater which are properly spaced at a maximum of 6” along the edge and 12” in the field on 24” truss/rafter spacing. OR Any system of screws, nails, adhesives, other roof deck fastening systems, or truss/rafter spacing that has an equivalent mean uplift resistance of 103 pounds per square foot or more as evidenced by laboratory uplift tests on full size sheets of plywood/OSB. •Attachment C – Plywood/OSB roof sheathing with a minimum thickness of 1/2" attached to roof trusses/rafters by 8d nails (2.5” x 0.131” diameter) which are properly spaced at a maximum of 6” along the edge and 6” in the field on 24” truss/rafter spacing. OR Dimensional Lumber or Tongue & Groove deck roof composed of ¾” thick boards with nominal widths of 4” or more. OR Any system of screws, nails, adhesives, other roof deck fastening systems, or truss/rafter spacing that has an equivalent mean uplift resistance of 182 pounds per square foot or more as evidenced by laboratory uplift tests on full size sheets of plywood/OSB.