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b.Staples are 16 gage wire and have a minimum 7/16-inch on diameter crown width. <br /> c. Nails shall be spaced at not more than 6 inches on center at all supports where spans are 48 inches or greater. <br /> d. Four-foot by 8-foot or 4-foot by 9-foot panels shall be applied vertically. <br /> e.Spacing of fasteners not included in this table shall be based on Table R602.3(2). <br /> f. For wood structural panel roof sheathing attached to gable end roof framing and to intermediate supports within 48 inches of roof edges and ridges, nails shall <br /> be spaced at 6 inches on center where the ultimate design wind speed is less than 130 mph and shall be spaced 4 inches on center where the ultimate design <br /> wind speed is 130 mph or greater but less than 140 mph. <br /> g.Gypsum sheathing shall conform to ASTM C1396 and shall be installed in accordance with GA 253. Fiberboard sheathing shall conform to ASTM C208. <br /> h.Spacing of fasteners on floor sheathing panel edges applies to panel edges supported by framing members and required blocking and at floor perimeters only. <br /> Spacing of fasteners on roof sheathing panel edges applies to panel edges supported by framing members and required blocking. Blocking of roof or floor <br /> sheathing panel edges perpendicular to the framing members need not be provided except as required by other provisions of this code. Floor perimeter shall <br /> be supported by framing members or solid blocking. <br /> i.Where a rafter is fastened to an adjacent parallel ceiling joist in accordance with this schedule, provide two toe nails on one side of the rafter and toe nails from <br /> the ceiling joist to top plate in accordance with this schedule.The toe nail on the opposite side of the rafter shall not be required. <br /> j. RSRS-01 is a Roof Sheathing Ring Shank nail meeting the specifications in ASTM F1667. <br /> TABLE R602.3(2) <br /> ALTERNATE ATTACHMENTS TO TABLE R602.3(1) <br /> SPACING`OF FASTENERS <br /> NOMINAL MATERIAL THICKNESS DESCRIPTIONa'b OF FASTENER AND LENGTH <br /> (inches) (inches) Edges intermediate supports <br /> (inches) (inches) <br /> Wood structural panels subfloor,roofs and wall sheathing to framing and particleboard wall sheathing to framing <br />