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• Technical Evaluation Report(TER) Stud Spacing and Cladding Weight when Connected to Wood Studs Using HeadLOK Fasteners6,7 5.3.2. Check for wind resistance. Step 1: Using the information derived from Steps 1-5 in Section 5.3, determine the allowable design wind pressure using HeadLOK fasteners from Table 3 below. Allowable Design Wind Pressure Furring or WSP Installation Condition Min. 1x4 Wood Furring Min. 1x4 Wood Furring Min.3/8"WSP and Min.3/e"WSP and at 16"o.c. at 24"o.c. 16"o.c.studs 24"o.c.studs HeadLOK Fastener Spacing in Furring 24 16 12 8 24 16 12 8 12 8 6 12 8 6 or Sheathing(in) Connection Allowable Design Wind 49 73 98 147 33 49 65 98 49 73 98 33 49 65 Pressure(PSF) 1) Wood framing and furring shall be minimum Spruce-Pine-Fir or any species with specific gravity,G,of 0.42 or greater. 2) Connection allowable design wind pressure applies to connection resistance only and shall meet or exceed design wind pressure. 3)Wood framing,furring,and sheathing shall be of adequate size,species,and grade to resist design loads and requirements in accordance with the applicable building code. 4)Where required by applicable building code,adequate resistance of connections and materials to seismic forces shall be provided based on local seismic ground motion hazard and the weight of the supported cladding system. Table 3:Allowable Design Wind Pressure for Connections Using HeadLOK Fasteners Step 2: Based on the design wind speed (85-140mph)and wind exposure category(A-D)specific to your region, determine the design wind pressure to be resisted for your application from Table 4 below. Example Design Wind Loads Design Wind Speed(mph)&Exposure 85/B 90/B 100/B 110/B 120/B 130/B 140/B 5'e - - 85/C 90/C 100/C 110/C 120/C - - 85/D 90/0 100/D 110/D Design Negative Wind Pressure Load to be Resisted(psf) 17.4 19.5 24.4 29.1 34.7 40.7 48.3 1)Mean roof height shall not exceed 30'(measured vertically from grade plane to middle of roof slope). 2)Refer to applicable building code for wind exposure descriptions(B=typical suburban/wooded terrain;C=open flat terrain;D=ocean/lake exposure). 3)Where topographic effects occur(e.g.,wind speed up due to hill-top exposure),refer to building code for wind load. 4)Tabulated wind pressures are from ASCE 7-05,for wall corner zones.For lesser values away from wall corners,refer to the building code. 5)Tabulated wind pressures assume 100%of wind load is resisted by the cladding/foam sheathing or furring/foam sheathing layer and not otherwise distributed or shared with other wall assembly layers. Table 4:Example of Components and Cladding Design Wind Loads Step 3: Verify that the allowable design wind pressure using HeadLOK fasteners(Table 3) meets or exceeds the design wind pressure for your project(Table 4). 5.3.3. Design Example: Given Foam Sheathing Thickness: 4" Cladding Material: Fiber cement lap siding Cladding Weight from Manufacturer Data: 3 psf Design Wind Speed/Exposure: 100/B Seismic Design Category: B (exempt) Wood Framing: 2x6 at 24" o.c. 6 For cladding system weights exceeding 25 psf with any thickness of foam sheathing,a design professional should be consulted. 7 Table 2 solutions are limited to 4"maximum thickness of foam sheathing.Design required for thicknesses of foam sheathing greater than 4".For cladding attachment over foam sheathing exceeding a 4"thickness,a design professional should be consulted. TER No. 1009-01 Page 5 of 12 Use of FastenMaster HeadLOKTM Fasteners to Attach Cladding and/or Furring to Wood Framing through Foam Sheathing