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Technical Evaluation Report (TER) <br /> Solution <br /> Step 1: Choose the furring type and orientation that will be used. We'll use 1x4(min.)wood furring in a <br /> vertical orientation over studs in this example (Figure la). <br /> Step 2: Consult siding manufacturer data for siding weight (3 psf)and add 1 psf for furring. Total = 4 psf. <br /> Step 3: Using Table 2, min. 1x4 wood furring at 24" o.c. attached to studs at 24" o.c. supporting up to 5 <br /> psf requires maximum 24" o.c. fastener spacing. <br /> Step 4: From Table 3, the connection allowable design wind pressure resistance is 33 psf. <br /> Step 5: Check the applicable building code to verify the wind pressure resistance required. Table 4 gives <br /> an example of the 2009 IRC wind pressures, and this example's connection resistance of 33 psf <br /> exceeds the required resistance for wind speeds up to 90 mph in Exposure C and 110 mph, Exp. <br /> B of 29.1 psf. <br /> Step 6: The minimum length of HeadLOK fastener required is 0.75" (furring) + 4" (foam) + 2.0" <br /> (penetration) = 6.75". Select a 7" HeadLOK (GM point)fastener. Note: <br /> 1. Add length for thickness of additional sheathing material layer behind foam, if included. <br /> 2. Verify furring provides adequate thickness for siding fastener per code or siding <br /> manufacturer's installation instructions, or specify an appropriate siding fastener for use in <br /> 3/4"-thick furring. <br /> Sheathing Sheathing <br /> ,l(optional) /(optional) <br /> Stud spacing v '/ Stud spacing <br /> per Table 1 , per Table 1 r' <br /> �1 p Siding �% <br /> Siding <br /> jiIlI Furring p Furring <br /> �� <br /> foam Foam li / <br /> Sheathing TIll Sheathing <br /> i <br /> Spacing per <br /> Table 1 Spacing per / <br /> Table 1 <br /> Head Lok . Screws <br /> Li(mtrati HeadLokr"Screwspenetration into stud) (mira2tipenotsationinto stud) <br /> ii ' <br /> .1 <br /> Figure 1a: Illustration of Exterior Wall Covering Assembly Figure 1b: Illustration of Exterior Wall Covering Assembly <br /> with Vertically-Oriented Furring with Horizontally-Oriented Furring <br /> TER No. 1009-01 Page 6 of 12 <br /> Use of FastenMaster HeadLOKTM Fasteners to Attach Cladding <br /> and/or Furring to Wood Framing through Foam Sheathing <br />