Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Plans
PITCH: 26 ARRAY PITCH:26 MP1 AZIMUTH:270 ARRAY AZIMUTH: 270 MATERIAL: Comp Shingle STORY: 2 Stories a ami° a, 00 a) a) _Sc° U 0 —JO ° 0 r Front Of House 0 0 LEGEND 0 (E) UTILITY METER & WARNING LABEL l� Nis 0 0 o INVERTER W/ INTEGRATED DC DISCO Q) w CO & WARNING LABELS CO � n.) 1---I DC DISCONNECT & WARNING LABELS Q 0 0 0 AC I....H AC DISCONNECT & WARNING LABELS A 0 0 0 DC JUNCTION/COMBINER BOX & LABELS co (E) DRIVEWAY 0 0 0 0 DISTRIBUTION PANEL & LABELS 0 0 Lc LOAD CENTER & WARNING LABELS o cn fB co O DEDICATED PV SYSTEM METER LnO 1 , o 0 0 0 0 RSD RAPID SHUTDOWN , Inv , ‘ D • 1 a _, ' `._„ I I STANDOFF LOCATIONS CONDUIT RUN ON EXTERIOR On CONDUIT RUN ON INTERIOR � GATE/FENCE o 0 HEAT PRODUCING VENTS ARE RED o t 1INTERIOR EQUIPMENT IS DASHED c) L_-='_J rt ald ° SITE PLAN N TOTAL ARRAY AREA (SF): 378 TOTAL ROOF AREA (SF): 2727 Scale: 1/8" = 1' W `+ E TOTAL ARRAY AREA IS a 13.87 0 1' 8' 16' PERCENT OF TOTAL ROOF AREA 1.5s J B—9723604 O O PREMISE OWNER: DESCRIPTION: DESIGN: CONFIDENTIAL- THE INFORMATION HEREIN JOB NUMBER: \* CONTAINED SHALL NOT BE USED FOR THE EDDID CORDOBA Eddid Cordoba RESIDENCE Mark Barton �\\,41SolarCiit r BENEFIT OF ANYONE EXCEPT SOLARCITY INC., MOUNTING SYSTEM: /►"'++r y® NOR SHALL IT BE DISCLOSED IN WHOLE OR IN Com Mount Type C 10156 SOUTHWEST 67TH AVENUE 6.615 KW PV ARRAY PART TO OTHERS OUTSIDE THE RECIPIENTS MODULEP ' TIGARD OR 97223 3055 ClearNew Way . ORGANIZATION. EXCEPT IN CONNECTION VMTH THE SALE AND USE OF THE RESPECTIVE (21) LG # LG315N1C-Z4 SHEET: REV DATE: San Mateo, CA 94402 SOLARCITY EQUIPMENT, WITHOUT THE WRITTEN INVERTER: PAGE NAME T:(650)638-1028 F:(650)638-1029 PERMISSION OF SOLARCITY INC. Delta # Solivia 6.6 TL SITE PLAN PV 2 a 3/7/2017 (888)-SOL-CITY(765-2489)www.aolarcity.com ` �� (E) 2x4 a$ 9/ 1'-2°+ (E) LBW PRE—MANUFACTURED TRUSS SIDE VIEW OF MP2 NTS STRUCTURE MEETS THE B PRESCRIPTIVE REQUIREMENTS MP2 X-SPACING X-CANTILEVER Y-SPACING Y-CANTILEVER NOTES OF THE OSSC SECTION 3111 r-/2.' Zi"' 9''_ if' stAbbtlttu PORTRAIT 48" 20" 64" 0" TOP CHORD 2x4 @ 24"OC ROOF AZI 90 PITCH 26 STORIES: 2 ARRAY AZI 90 PITCH 26 BOT CHORD 2x4 @24"OC Comp Shingle X AND Y ARE ALWAYS RELATIVE TO THE STRUCTURE FRAMING THAT SUPPORTS THE PV. X IS ACROSS RAFTERS AND Y IS ALONG RAFTERS. PV MODULE 5/16" BOLT WITH INSTALLATION ORDER FENDER WASHERS ' LOCATE RAFTER, MARK HOLE ZEP LEVELING FOOT (1) LOCATION, AND DRILL PILOT ZEP ARRAY SKIRT (6) -, HOLE. (4) (2) SEAL PILOT O LE WITH POLYURETHANE SEALANT. ZEP COMP MOUNT C =��` 140140 -I- i 1i14 11 ZEP FLASHING C `w1� (3) INSERT FLASHING. • (E) COMP. SHINGLE (4MA ) PLACE MOUNT. VA (E) ROOF DECKING /I. ill (5) INSTALL LAG BOLT WITH 5/16" DIA STAINLESS (5) C SEALING WASHER. STEEL LAG BOLT LOWEST MODULE SUBSEQUENT MODULES INSTALL LEVELING FOOT WITH WITH SEALING WASHER (6) BOLT & WASHERS. (2-1/2" EMBED, MIN) (E) RAFTER6 STANDOFF Scale: 1 1/2" = 1' JB-9723604 0 0 PREMISE OWNER: DESCRIPTION: DESIGN: CONFIDENTIAL— THE INFORMATION HEREIN JOB NUMBER: \\� CONTAINED SHALL NOT BE USED FOR THE EDDID CORDOBA Eddid Cordoba RESIDENCE Mark Barton \\,,t, �afCi}`` NOR BENEFIT SHALL T"BE"E EXCEPT DISCLOSED IN WHOLE OR IN ARCITY INC., M°""n"G S'S'EI': 10156 SOUTHWEST 67TH AVENUE 6.615 KW PV ARRAY 'i L Comp Mount Type C • PART TO OTHERS OUTSIDE 1HE RECIPIENTSMODULES TIGARD, OR 97223 ORGANIZATION, EXCEPT IN CONNECTION VATH 3055 OearIew Way THE SALE AND USE OF THE RESPECTIVE (21) LG # LG315N1C—Z4 PAGE NAME: SHEET: REk DATE: San Mateo,CA 94402 SOLARCITY EQUIPMENT, WITHOUT THE WRITTEN INVERTER: T:(650)638-1028 F:(650)638-1029 PERMISSION OF SOLARCITY INC. Delta # Solivia 6.6 TL STRUCTURAL VIEWS PV 3 a 3/7/2017 (888)—SOL—CITY(765-2489)www.soIaraity.com UPLIFT CALCULATIONS 03.04.2017 stem StructuralVersion#65.9 Design So r. .. Plane'Info�ltion `1 -+1 tial - tip Roof Roof Slope 26© Raft Spa g 24"r?.C. Framing Type/Direction Y-Y Rafters PV System ype SolarCity Sleeldlount'm Zep System Type ZS Comp Standoff(Attachment Hardware) Comp Mount Type C Spanning Vents No Wind"atid SnoiN e51xn Criteriel7 Wind Design Code ASCE 7-10 Design'Method ,:Partiatty 'Enclosed Method sposure CAtsioary = - S 1,`on 26.7 Ground Snow Load pg 25.0 psf ASCE Table 7-1 ending t f Snow 2512 psf ASCE Eq: Roof Snow Over PV Modules 25.0 psf ASCE Eq:7.4-1 WindWirtdViressure Catcularson Coefficients Wind Pressure Exposure Kz 0.95_ Table 30,3-1 Topographic Factor 'Kzf 1 `. Wind Directionality Factor Kd 0.85 Section 26.6-1 Importance Factor. I NR Velocity Pressure qh qh=0.00256(Kz)(1(z()0(d)(V^2) Equation 30.3-1 18.6 psf 6,,.:Wind lure ;J' it d Ext.Pressure Coefficient(Up) GCp(Up) -0.88 Fig.30.4-2n/e/C,Ais Ext.,Preisur Coefficle t:(H own) ' GCp(Down) 0.45 FC O. earstc 5A10 Design Wind Pressure p p=qh(GCp) Equation 30.4-1 Windr *sure Up' . 0p) Wind Pnissure Down A(dowrr) 101/Pt ALLOWABLE STANDOFF SPACINGS X-1 irection A r�lr— Max Allowable 3STtand ao€fe Spacing Landscapem 72" 39" Max All a able Cantil ve r. Land ' 24" NA Standoff Configuration Landscape Staggered Max$,t4ndolf Tributaryi,Atti :, T Tri 204 PV Assembly Dead Load W-PV 3.0 psf Met iAFM"-Vat Standoff 37,2 T uat -159 lbs Uplift Capacity of Standoff T-allow 637 lbs ndoff C errand/Capacity l L .44.9% _ - Max Allowable Standoff Spacing Portrait 48" 64" MaxMaillittowabtetantilever . : 'Po trait , " Standoff Configuration Portrait Staggered Max Standoff_:.Tribute ,,:, 3 31 a;r., PV Assembly Dead Load W-PV 3.0 psf "Wind pliftatSte doff-,:.- riettsial -174lbs Uplift Capacity of Standoff T-allow 637 lbs ,Standoff Demand/C`paclty 3CR - 27.30Jo" J B-9723604CONFIDENTIAL- THE INFORMATION HERON 00 PREMISE OWNER: DESCRIPTION: DESIGN: JOB NUMBER: �\�fs -- CONTAINED SHALL NOT BE USED FOR THE EDDID CORDOBA Eddid Cordoba RESIDENCE Mark Barton „ ,` o�arCity BENEFIT OF ANYONE EXCEPT SOLARCITY INC., MOUNTING SYSTEM: ,0 4us NOR SHALL IT BE DISCLOSED IN WHOLE OR IN Com Mount Type C 10156 SOUTHWEST 67TH AVENUE 6.615 KW PV ARRAY PART TO OTHERS OUTSIDE THE RECIPIENT'S MODULEp ' TIGARD, OR 97223 3055 GeaMew Way ORGANIZATION, EXCEPT IN CONNECTION WITH THE SALE AND USE OF THE RESPECTIVE (21) LG # LG315N1C—Z4 SHEET: REI DATE San Mateo,CA 94402 SOLARCITY EQUIPMENT, WITHOUT THE WRITTEN PAGE NAME T:(650)638-1028 F:(650)638-1029 PV 4 n, PERMISSION OF SOLARCITY INC. IDelta # Solivia 6.6 TL UPLIFT CALCULATIONS a 3/7/2017 (888)–SOL–CITY(765-2489)www.salarcity.eo GROUND SPECS MAIN PANEL SPECS GENERAL NOTES INVERTER SPECS MODULE SPECS LICENSE BOND (N) #8 GEC TO (E) UFER AT PANEL Panel Number:BR2040B200 Inv 1: DC Ungrounded INV 1 —(1)Delta # Solivia 6.6 TL LABEL: A —(21)LG.# LG315N1C—Z4 OR # 180498 WITH IRREVERSIBLE CRIMP Meter Number:33283753 Inverter;6600W, 240V, 97.5%, Zigbee, PLC PV Module; 315W, 292.7 PTC, 40mm, Blk Frm, Wht Back Sheet, MC4, ZEP, Mono RGC, CGC1 Underground Service Entrance INV 2 Voc: 40.6 Vpmax: 33.2 INV 3 Isc AND Imp ARE SHOWN IN THE DC STRINGS IDENTIFIER (E) 200A MAIN SERVICE PANEL E200A/2P MAIN CIRCUIT BREAKER Inverter 1 IND (E) WIRING 200A/2P Q Delta 0 op Solivia 6.6 TL , DG / MP 2: 1x11 (E) LOADS • I � I M1J : L2�� I 240V r . EGC • .-- DC+ 1 N �� DG I (2 D 35A/2P EGC/ 4,�DC+ DIC+ MI m�� r— GEC 1� pG DC- MP 2: 1x10 �— 1 ®_EGC——— EGC J c—ni L N — EGC/GEC -J Z-Z — `E GEC TO 120/240V SINGLE PHASE UTILITY SERVICE J— Voc* = MAX VOC AT MIN TEMP POI (1)CUTLER-HAMMERfi BR235 PV BACKFEED BREAKER Breaker, 35AP, 2 Spaces AC Dr v _(1)CURER-HAMMER #BD1,515 I Breaker, 15A/1P-15A/1P, 1 Space, Duplex -(1) 1515 Breaker,,H15A 1P-15A/1P, 1 Space, Duplex (1)AWG#8, THWN-2,Black--�- A - (2)AWG X10, PV Wire, 600V, Black Voc* =494.12 VDC Isc =10.02 ADC OI (1)AWG#8, THWN-2, Red O L F(1)AWG#10, THHN/THWN-2,Green EGC Vmp =365.2 VDC Imp=9.5 ADC I (1)AWG#10, THWN-2, White NEUTRAL Vmp =240 VAC Imp=27.5 MC LLLL (1 conduit Kit: 3/4" PT. .. . . . . . . . . . . . . . . . . . . . . -(1)AWG#8, THWN-2, Green EGC/GEC-(1)Conduit Kit; 3/4'EMT ° O (2 AWG p10, PV Wire,600V, Black Voc* =449.2 VDC Isc =10.02 ADC (1)AWG/10, THHN/THWN-2, Green EGC Vmp =332 VDC Imp=9.5 ADC LCL(1)Conduit Kit; 3/4' EMT i J B-9723604 0 O PREMISE OWNER: DESCRIPnoN: DESIGN: CONFIDENTIAL- THE INFORMATION HEREIN JOB NUMBER: ��`�a ■ - CONTAINED SHALL NOT BE USED FOR THE EDDID CORDOBA Eddid Cordoba RESIDENCE Mark Barton ".4�SolarCity BENEFIT OF ANYONE EXCEPT SOLARCITY INC., MOUNTING SYSTEM: , NOR SHALL IT BE DISCLOSED IN WHOLE OR IN Com Mount Type C 10156 SOUTHWEST 67TH AVENUE 6.615 KW PV ARRAY PART TO OTHERS OUTSIDE THE RECIPIENTS MODULES TIGARD, OR 97223 ORGANIZATION, EXCEPT IN CONNECTION WITH 3055 Clearview Way THE SALE AND USE OF THE RESPECTIVE (21) LG # LG315N1C—Z4 PAGE NAME: SHEET: REN DATE: San Mateo, CA 94402 SOLARCITY EQUIPMENT, WITHOUT THE WRITTEN INVERTER: T:(650)638-1028 F:(650)638-1029 PERMISSION OF SOLARCITY INC. Delta # Solivia 6.6 TL THREE LINE DIAGRAM PV 5 a 3/7/2017 (888)-SOL-CITY(765-2489)www.sdarcity.com ELECTRICAL CALCULATIONSModule: 21 LG 315N1C Z4 292.7 Inv Power WPTC Voltage Drop Calculations Version 5_8.0 Inverter 1: 1 Delta Solivia 6.6 TL 0.98 6600 5993.03 Vdrop= Imp) * (2*Length)*(Resistance) / Vmp) Module: LG 315N1C-Z4 292.7 i Imp(A) Max.Length(ft) Wire Inverter 2: String: 9.5 80 AWG#10 at Max Ave Hi:78 deg F Module: LG 315N1C-Z4 292.7 Vdrop= (9.5 160 0.00124 Ohms) / 315.24 0.6 Inverter 3: Branch: 9.5 I 50 I AWG#10 at Max Ave Hi:78 deg F • Module: LG 315N1C Z4 292.7 Vdrop= (9.5 100 0.00124 Ohms) / 365.2 0.37 Inverter 4: Total voltage drop in DC conductors= 0.97 Inverter: 27.5 10 AWG#8 at 240V Vdrop= (27.5 20 0.00078 Ohms) / 240 V 0.06 Total: 21 Modules Total Inv Pwr: 6600 5993.03 PTC Combined: I at 240V Photovoltaic Module Electrical Specifications: Total STC: 6615 Vdrop= Ohms) / 240 V Voc: 40.6 V deg F deg C Vmp: 33.2 V Record Low Temp: 8 -13 Total voltage drop in AC conductors= 0.06 Isc: 10.02 A Max Average Hi Temp: 78 26 Total voltage drop in AC and DC conductors= Imp: 9.5 A Record Hi Temp: Tvoc: -0.11 V/deg C Tisc: 3.01 mA/deg C String Type A and 2 Combined Strings Type A Voc Correction Method: Manuf TVoc Data Branch Circuit Type A 1 way wire length: N/A Voc Correction Factor: Delta Solivia 6.6 TL _ 1 strings per branch 1 1 strings per branch 2 Inverter Min Vdc Input: 146 11 LG 315N1C-Z4 Min Vmp at Max Temp: 315.24 11 modules per series string 10 modules per series string Voc= 446.6 Voc= 446.6 V Voc= 406 V nr - - _ - Ait'rtp= 3 - V- - - ---- Isc= 10.02 Inverter Max Vdc Input: 600 Isc= 10.02 A Isc= 10.02 A Max String Size: 13 Imp= 9.5 1-way wire length: 50 Imp= 9.5 A Imp= 9.5 A Icont= 12.52 Art690.8(A)(1) Icont= 12.52 A Icont= 12.52 A Art690.8(A)(1) 1.a Conductor: AWG#10 PV Wire 2.a Conductor 1: N/A Conductor 2: N/A (Cont*1.25=(Amps) 15.66 Conductor 1 Conductor 2 30 deg C ampacity= 40 Icont*1.25=(Amps) 15.66 15.66 1.b Icont=(Amps) 12.52 30 deg C ampacity= N/A N/A Start ampacity 40 2.b Icont=(Amps) 12.52 12.52 Temperature derate(%=F) 0.82 Start ampacity N/A N/A Conduit fill derate(%=#) 1 Temperature derate(%=F) N/A N/A Derated ampacity 32.8 Conduit fill derate(%=#) N/A N/A 1.c Derated ampacity N/A N/A (cont*1.25=(Amps) 15.66 2.c Term 1 Term 2 Ampacity 40 - Temp table N/A N/A Icont*1.25=(Amps) 15.66 15.66 1.d Icont*1.25=(Amps) 15.66 Ampacity N/A N/A OCP Size= 20 Inverter Type A Output 2.d OCP Size= 20 20 Delta Solivia 6.6 TL 1 way wire length: 10 ft Combined Inverter Output Icont= 27.5 A Art 690.8(A)(1) Service Voltage= 3.a Icont*1.25=(Amps) 34.38 Art 690.8(6)(1) Total Inverter Power= 1 way wire length= 10 OCP Size= 35 Art 240.6(A) Icont=#of inverters*max inverter current Art 690.8(A)(1) 3.b Conductor: AWG#8 THWN-2 at 90 deg C:Table 310.16 Icont=(Amps) Icont*1.25=(Amps) 34.38 4.a Icont*1.25=(Amps) 34.38 Art 690.8(6)(1) 30 deg C ampacity= 55 OCP size= 35 Art 240.6(A) 3.c Icont=(Amps) 27.5 4.b Conductor: AWG#8 THWN-2 at 90 deg C:Table 310.16 Start ampacity 55 Icont*1.25=(Amps) 34.38 Temperature derate(%=F) 0.91 30 deg C ampacity= 55 Conduit fill derate(%=#) 1 4.c Icont=(Amps) 27.5 Derated ampacity 50.05 Start ampacity 55 3.d Icont*1.25=(Amps) 34.38 Temperature derate(%=F) 0.91 Ampacity 50 Conduit fill derate(%=#) 1 Derated ampacity 50.05 4.d Icont*1.25=(Amps) 34.38 Ampacity 50 JB-9723604 0 0 PREMISE OWNER: DESCRIP11ON: DESIGN: CONT INEDIAL- THE IN BE USED FORHN JOB NUMBER: SolarCity CONTAINED SHALL NOT BE USED THE EDDID CORDOBA Eddid Cordoba RESIDENCE Mark Barton �. A BENEFIT OF ANYONE EXCEPT SOLARCITY INC., MOUNTING SYSTEM: aS NOR SHALL IT BE DISCLOSED IN WHOLE OR IN CompMount Type C 10156 SOUTHWEST 67TH AVENUE 6.615 KW PV ARRAY PART TO OTHERS OUTSIDE THE RECIPIENTS MODULETIGARD, OR 97223 3055 Clearview Way ORGANIZATION, EXCEPT IN CONNECTION WITH ' THE SALE AND USE OF THE RESPECTIVE (21) LG # LG315N1C-Z4 SHEET: REV DATE: San Mateo,CA 94402 SOLARCITY EQUIPMENT, WITHOUT THE WRITTEN INVERTER: PAGE NAME T:(650)638-1028 F:(650)638-1029 PERMISSION OF SOLARCITY INC. Delta # Solivia 6.6 TL ELECTRICAL CALCULATIONS PV 6 a 3/7/2017 (888)-SOL-CITY(765-2489)www.salarcity.com ZS Comp Edge Zone Calculations 1 of 4 ZS Comp Edge Zone Calculations 2 of 4 eo 3/26/15 ZeS' 3/26/15 Zatar This set of calculations is intended to show that ZS Comp has sufficient strength to allow for attachment Down Force Spacing spacings of at least 48"in Edge Zones whether the modules are orientated in landscape or portrait.The Allowable Down Force Load down force spacing= calculations will vary the design variables to account for the worst case for each failure mode that is being module width x design load checked. Wind Down Calculations All variable the same as above except for roof pitch General Design Information: Roof Pitch Module Size: 39"x 65" Basic Wind Speed= 120 mph 14 30 45 System Weight= 3 psf Ground Snow Load= 30 psf GCN landscape= 0.5 0.9 0.9 GCN portrait= 0.4 0.9 0.9 Comp Mount Allowable Loads design load landscape= 15.35 27.64 27.64 psf Load Duration Wind Sno design load portrait= 12.28 27.64 27.64 psf "'m Jk. Cf G lbsN/AM.. Lateral= 357 lbs 290 lbs a Srttt lak note:use 10 psf minimum Down Force= 1074 lbs 771 lbs EON Snow Calculations v' To account for unbalanced snow loads,ground snow loads will be used for roof pitches 30 degrees and lower. Attachment Spacing Calculations `. Per section 7.6.1 of ASCE 7-10 unbalanced snow loads do not need to be considered for slopes above 30 Uplift Spacing PAPIRES 12 j4 1 P 6 degrees. Allowable Uplift Load FOR PAGES 1-4 uplift spacing= Ground Snow Load= 30 psf module length or width x design load Roof Pitch Wind Uplift Calculations 14 30 2014 OSSC and ASCE 7-10 Method 2 Design Snow Load 29.11 25.98 psf (snow load spread over the length of the rafter) p=qh GCN qh=0.00256K,KitKdV2I Down Force Load Roof Pitch Basic Wind Speed= 120 mph Combinations: 14 30 Exposure= C Roof Zone= Edge Zone D+S= 31.16 25.10 psf Importance Factor= 1.0 K,= 0.98 from Table 6-3 D+0.6*W= 12.91 19.18 psf Gable/Hip Roof Kn= 1.0 per 6.5.7.2 D+0.75*0.6*W+0.755 31.59 ;,31 psf worst Case Roof Pitch= 14 degrees Kd= 0.85 from Table 6-4 Roof Height= 30 GCN landscape=-1.6 Allowable Spacing for Down Force Jscape effective area= 13.0 ft2 GCN portrait= -1.5 771Ibs in iortrait effective area= 21.7 ft2 landscape down force spacing= 39"x 31.91psf x 144-ft2 =89" Plandscape= -49.13 psf qh= 30.71 psf Pportrait= -46.06 psf 7711bs in portrait down force spacing= 65"x 31.91psf x 144-ft2 = 53" Uplift Load Combination:0.6D+0.6W(ASCE Section 2.4.1 equation 7) design load landscape= -27.73 psf design load portrait= - -25.89 psf 656 lbs in landscape uplift spacing = 39"x 27.73 psf x 144 ft2 = 87" 656 lbs in portrait uplift spacing = 65"x 25.89 psf x 144-ft2 = 56" ZS Comp Edge Zone Calculations 3 of 4 ZS Comp Edge Zone Calculations 4 of 4 e'.. 3/26/15 3/26/15 Lateral Spacing Module Deflection Spacing landscape module spacing= -1.4545 x Maximum Uplift or Down Force Pressure+120.7273 The lateral force on the system increases as the pitch of the roof increases,but the amount of snow on the roof decreases for slopes greater than 30 degrees.With this in mind,the lateral force will be checked at 30 degrees with ground snow load and 45 degrees with sloped roof snow. portrait module spacing =-0.8182 x Maximum Uplift or Down Force Pressure+79.909 Allowable Lateral Load Maximum Uplift Pressure Landscape= -27.73 lateral spacing= module width x design load Maximum Uplift Pressure Portrait= -25.89 Snow Calculations Maximum Down Force Pressure= 31.91 psf Ground Snow Load= 30 psf las=C5 pf Roof Pitch= 31 45 degrees landscape module spacing =-1.4545 x 31.91 psf+120.7273 = 74" pf=0.7CeCflpg Ce= 0.9 Cs= 0.71 0.45 - • 0.8182 x 31.91 s +79.909= 54" portrait module spacing- - p f I= 1.0 p5= 16.1 10.2 psf Calculation Summary Roof Pitch Calculated Edge Zone Spacing 27 30 31 45 Spacing Check Landscape Portrait Design Snow Load 26.73 25.98 -13.80 7.22 psf Uplift 87" 56" (snow load spread over the length of the rafter) Down Force 89" 53" Lateral 30" -21-4-1 Lateral Force Component 4" 48" `iE44" Down Force Load Roof Pitch Module Deflection 54" Combinations: 27 30 31 45 As can be seen in the table above,for Design Wind Speeds upto 120mph and Ground Snow Loads upto 30 D+S= 13.50 1k24-9 ' 8.65 7.22 psf g p D+0.75*0.6W+0.755 10.46 11.24 6.88 5.95 psf psf with modules orientated in landscape,the system is strong enough to be installed at 72"on center in the Edge Zone.When modules are installed in portrait,the spacing for edge zone installations can be 48"on Allowable Spacing for Lateral Force center for most roof pitches.For roof pitches that are greater than 27 but less than 31",the maximum 30 degree roof pitch attachment spacing is 44". 2901bs in landscape lateral spacing = 39"x 14.49 psf x 144 ft2 = 74" 2901bs in portrait lateral spacing = 65"x 14.49 psf x 144 ft2 =44" Portrait spacing is less than 48".Try roof pitch of 27 degrees 2901bs in portrait lateral spacing= 65"x 13.50 psf x 144 ft2 =48"