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v1vit `�� 1800 W Ashton Blvd_ <br /> -s�'l ' Ecf,, Lehi, UT 84043 <br /> Structural Group <br /> J. Matthew Walsh,PE Kirk M.Nelson, SE Samuel Brown,PE-Civil <br /> Diredor of Engineering Structural Engineering Structural Engineering <br /> james.walsh@vivinrsolar com kirk.nelson@vivintsolar.com sam.brown@vjWnisolar.com <br /> Mount Spacing Calculation <br /> ASCE 7-10 Simplified Procedure for Components and Cladding <br /> NDS Section 12 <br /> [CC Code Cycle 2015 <br /> Wind speed (V) 145 mph <br /> Exposure Category D <br /> Roof Slope (0) 27.0 deg <br /> Effective Wind Area 20 sf <br /> Least Horizontal Dimension 0.00 ft <br /> Adjustment Factor(lt) 1.47 <br /> Topographic (Kt ) 1 <br /> Panel Dead Load TO 3 psf <br /> Ground Snow Load 0 psf <br /> Flat Roof Snow Load (pf) 0 psf ASCE 7-10 Eq. 7.3-1 <br /> Slope Factor(Cs) 0.72 ASCE 7-10 Fig. 7-2b <br /> Panel Snow Load 0 psf Pfcs <br /> Total Dead Load (D) 3 psf Panel Dead Load + Roof Snow Load <br /> Portrait Landscape <br /> Vertical Spacing (L) 67 in 39 in Based on length of the panel <br /> Wind Pressure Zone 1 Zone 2 Zone 3 <br /> Lookup Pressure (Pnet30) 31 psf 49 psf 89 psf ASCE 7-10 Fig. 30.5-1 <br /> Uplift Pressure W 46 psf 72 psf 131 psf A*Kzt*Pnet30 <br /> Fastener Type 5/16 Yield E uations NDS Table 12.3.1A <br /> Diameter 5/16 in I m 648 Ibs <br /> Fasteners 1 1 s 1222lbs <br /> Embedment (Dpen) 2 1/2 in II 359 Ibs <br /> Load Duration (Cd) 1.6 III m 372 Ibs <br /> Pullout per Inch (W) 235 lb/in III s 389 Ibs <br /> IV 336 Ibs <br /> Uplift Capacity 939 Ibs DpenCdW <br /> Shear Capacity 336 Ibs Based on equations from NDS 12.3.1A <br /> Page 3 of 4 'v'nt, <br /> 1 <br />