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W y s s l i n g C o n s u l t i n g 76 N. Meadowbrook Drive (201) 874-3483 Alpine, UT 84004 W i n dU p l if t swyssling@wysslingconsuiting.com R o o f t o p S o l a r P a n e l s P a r a l l e l t o R o o f S u r f a c e ASCE 7-16, Section 29.4.4 V= 98 ~?_?_ Basic Wind Speed Weibel Residence Exposure C ASCE 7-16, Section 26.7 2529 Alona Street K,= 0.85 Velocity Pressure Coefficient, ASCE 7-16, Figure 26.10-1 Santa Ana, CA Ka= 1 Topographic Factor, ASCE 7-16, Section 26.8.2 Ky= 0.85 _Directionality Factor, ASCE 7-16, Section 26.6 K,= 0.996 ? Ground Elevation Factor, ASCE 7-16, Section 26.9 qu= 16.6psf gy =0.00256K,K,,KyK,V? (ASCE 7-16 Eq. 26.10-1) RoofAngle=23. deg Roof Type Gable Smnchor= 72in Horizontal spacingof roof anchors A c = 17.27 sf Panel Area tributary to each roof anchor Gc,External Pressure Coefficient, ASCE 7-16, Figure 30.3-2 RoofZone Zone1 2e 2n 2r 3e 3r +150 +1.50 2.43 +2.43 2.43 3.08 g.= 0.77 Pressure Equalization Factor, ASCE 7-16 Figure 29.4.-8 Ge= 1.00 ?_ Edge Array Factor, ASCE 29.4.4 edges < 0.5*building height, and pane! spacing < 4ft. Poe: = GxGCy@eQ,= Design Wind Pressure, ASCE 7-16, Equation 29.4-7 Roof Zone 1 2e 2n 2r 3e 3r -19 psf -19 psf -31 psf ?31 psf -3l psf «39 psf Min Pressure = -16 psf Use 19 psf Use 19 psf Use31 psf Use 31 psf Use3l psf Use 39 psf ULTIMATE x0.6= 16 psf 16 psf 19 psf 19 psf 19 psf 24psf ALLOWABLE Connection to Existing Roof Framing FS.= 1 Additional Factor of Safety applied to withdrawl force, i f desired A g = 173 f t DLpanet= 2 psf Roof Zone 1 2e 2n 2r 3e 3r Wioin= 19 psf 19 psf 31 psf 31 psf 31 psf 39 psf P y , = F S . x Agi, x (0 .6 D - 0 . 6 W ) = W i t h d r a w l f o r c e f o r each r o o f a n c h o r R o o f Z o n e 1 2e 2 n 2 r 3e 3r - 1 7 2 . 6 l b s -172.6 lbs -2 9 5 .9 Ibs = -295.9 lbs -295.9 l b s -38 1 .6 Ibs Connection Capacity d,=5/16 in Lag Screw diameter Dpen=2 1/2 in Lag Screw penetration into existing framing member No.of Screws 1 Screws per Connection Douglas Fir-Larch Species of wood framing C o e 1 .6 Load Duration Factor for Wind Loading, NDS Table 2.3.2 C = 0.7 Temperature Factor, NDS Table 10.3.4 W = 266 Ib/in Withdrawl Capacity, NDS Equation 11.2-1 W = C y x C , x W = 298 Ib/in Adjusted withdrawl value Patow = Dye X W ' = 745 Ibs ?This analysis calculates the capacityo f the lag screws Roof Zone 1 2e 2n 2r 3e 3r only. For capacityof the D E M A N D = 1 7 3 l b s 1 7 3 I b s 2 9 6 l b s 2 9 6 I b s 2 9 6 1 b s 3 8 2 Ibs_? complete mounting system, C A P A C I T Y = 7 4 5 l b s 7 4 5 I b s 7 4 5 l b s 7 4 5 I b s 7 4 5 I b s 7 4 5 l b s please see manufacturer's up to72in ok up to72in ok up to72in ok up to72in ok up to72in ok up to72in ok recommendations. 2529 N Alona St 02/16/23