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WEIGHT LOAD WIND LOAD <br /> QUANTITY WEIGHT(Ibs) TOTAL(Ibs) WIND LOAD VARIABLES MINIMUM ATTACHMENTS <br /> MODULES 26 45.8 1190.80 GCP=(EXTERNAL PRESSURE COEFFICIENT) <br /> STANDOFFS 32 1.21 38.85 MODULE SIL-420-BG GC.=0(ARRAY IS AN OPEN STRUCTURE) <br /> RAIL LINEAR FT 178 0.72 127.84 WIDTH 40.51 in <br /> END CLAMP 8 0.05 0.40 P U G E T S O U N D <br /> MID CLAMP 48 0.08 3.84 LENGTH 73.39 in GCP F(EXTERNAL PRESSURE -0.8 SOLA R <br /> MICROINVERTERS 26 2.38 61.88 AREA =L(in)*W(in)*(ftz/inz) 20.65 ft COEFFICIENT) �_E +o.�REs +-,.o <br /> w <br /> TOTAL 1423.6 VELOCITY PRESSURE P =qh*(GCP-(GCD,=0)) 24.62 psf zo N PUGET SOUND SOLAR <br /> Kz =(HEIGHT AND EXPOSURE) 0.7 N =(NUMBER OF MODULES) 0 0 805 Rainier Ave S <br /> WEIGHT LOAD=Ibs/ =TOTAL Ibs/(AREA*N) 2.65 Kz1=(SPEED UP FACTOR) 1.67 F, =P*A*N 0 psf 0 <br /> TOTAL WEIGHT LOAD OF SOLAR EQUIPMENT IS 2.65 Ibs/fe Kd =(WIND DIRECTIONALITY) 0.85 MPH M� _(NUMBER OF ATTACHMENTS) o Seattle, WA 98144 <br /> V =(BASIC WIND SPEED) 110 MPH Tel: 206-706-1931 <br /> WEIGHT LOAD NOTES: I =(IMPORTANCE CATEGORY) 11:1.00 GC = -1.2 <br /> TOTAL NUMBER OF ATTACHMENTS IN SYSTEM IS DICTATED BY qh = 0.00256*Kz*Kz1*Kd*V-I 30.78 psf P =qh*(GCP-0) 36.94 psf z <br /> WIND LOAD REQUIREMENTS OR BY MAXIMUM SPAN REQUIREMENTS DESIGN UPLIFT N =(NUMBER OF MODULES) 26 a <br /> OF RAIL MANUFACTURER,WHICHEVER IS GREATER. Lag Bolt ATTACHMENT TYPE #14 SCREW F =P*A*N �LLo o <br /> MINIMUM ATTACHMENTS PER WIND LOAD:71(18/STANDOFFS) F =(DESIGN UPLIFT LOAD) 80 Ibs/attachment M2 =(NUMBER OF ATTACHMENTS) 71 3 N <br /> MINIMUM STANDOFFS PER SPAN OF 6ft:32 FORCE PER ATTACHMENT o K <br /> MToru=MI+M2+M3 71 GC = -2.0 M 1H <br /> NUMBER OF STANDOFFS REQUIRED:32w LL <br /> FTOTAL =(Fi+F2+F3)/MTOTAL 70 Ibs/attachment P =qh*(GC -0) 61.56 psf o o 0 <br /> N =(NUMBER OF MODULES) 0 N z a <br /> SAFETY FACTORF3 =P*A* W N Olbs O a <br /> O <> �0 <br /> SAFETY FACTOR, F/FTOTAL>1.0 1.72>1.0 OK 413 =(NUMBER OF ATTACHMENTS) 0 = J CIJa <br /> U 7 <br /> 00 <br /> A MINIMUM OF 71 ATTACHMENTS REQUIRED Z m Q N= <br /> WITH 4 ATTACHMENT(S)PER STANDOFF(S)WITH 1.5+DEPTH OF LAG IN DOUGLAS FIR O <br /> 0". <br /> N <br /> Y N j oza <br /> z w 3� <br /> Q "�5 <br /> m 0'N <br /> oro <br /> woy <br /> maw <br /> ioa <br /> 10 <br /> Z. <br /> 3u�5 <br /> owy <br /> TI-0 <br /> 0 PRELIMINARY DESIGN 411824 <br /> REV DESCRIPTION DATE <br /> DRAWN BY NN <br /> CHECKED BY BU <br /> PROJECT#:22117 <br /> SALES:JAKE SHIELDS <br /> PM: BILL ULSUND <br /> PM CELL:(253)951-0385 <br /> a <br /> WIND AND WEIGHT LOAD <br /> CALCULATIONS <br /> s <br /> PV-103 <br />