675 IAC 14-4.4-78 Table R703.8.4(1); tie attachment and airspace requirements

Sec. 78. Change TABLE R703.8.4(1) to read as follows: TABLE R703.8.4(1) TIE ATTACHMENT AND AIRSPACE REQUIREMENTS BACKING AND TIE MINIMUM TIE MINIMUM TIE FASTENERa AIRSPACEc Wood stud backing with corrugated sheet metal 22 U.S. gage (0.0299 in.) x 7/8 in. wide 8d common nailb (2 1/2 in. x 0.131 in.) 3/4 in. minimum between sheathing and veneer Wood stud backing with metal strand wire W1.7 (No. 9 U.S. gage; 0.148 in.) with hook embedded in mortar joint 8d common nailb (2 1/2 in. x 0.131 in.) 3/4 in. minimum between sheathing and veneer Maximum 4 1/2 in. between backing and veneer Cold-formed steel stud backing with adjustable metal strand wire W1.7 (No. 9 U.S. gage; 0.148 in.) with hook embedded in mortar joint No. 10 screw extending through the steel framing a minimum of three exposed threads 3/4 in. minimum between sheathing and veneer Maximum 4 1/2 in. between backing and veneer For SI: 1 inch = 25.4 mm. a. In seismic design category D0, D1, or D2, the minimum tie fastener shall be an 8d ring-shank nail (2 1/2 in. x 0.131 in.) or a No. 10 screw extending through the steel framing a minimum of three exposed threads. b. All fasteners shall have rust-inhibitive coating suitable for the installation in which they are being used, or be manufactured from material not susceptible to corrosion. c. Mortar is permitted to encroach into the airspace or make incidental contact with the sheathing or the sheathing paper or equivalent.