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Home My WebLink AboutBuilding plans - Solar PV PlansGodwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com R-1 # Modules (5) Pitch: 20° Azimuth: 180° R-2 # Modules (32) Pitch: 20° Azimuth: 180° 5'-6" 3'-3" FRONT OF HOUSE R-1 R-2 1/11/2021 RF . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 1st Responder Access minimum of 36" unobstructed as per Section R324 of the 2018 IRC Customer Info: S-1 Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: Represents all Fire Clearance including Alternative methods Utility Meter 2020 FL Residential Code & FBC, 7th Edition (2018 International Residential Code - 2nd Printing modified by the FL Building Standards , 2018 International Energy Conservation Code, County of Saint Lucie Code, 2017 National Electric Code. Legend First responder access Sheet Index S-1 Cover Sheet / Site Plan S-2 Detail E-1 One - Line S-1A Mounting Plan Utility Meter PV Disconnect Vent Pipe Chimney Satellite FRONT OF HOUSE N -COGEN Disconnect Located adjacent to Utility meterInverter Type: PV Panel: Racking: Total Wattage: Roof Type: Wind Load: Fastener Type: Enphase IQ7 (37) Jinko 315M-60HBL Chiko 11,655W Composition Shingles 7 to 20 Deg Use 5/16" Dia 5" Lags Layout Subject to Change Based on Site Conditions Meets All Editions of Florida Fire Prevention Code 6th Edition Compass for Aerial General Notes: -Enphase IQ7 Micro Inverters are located on roof behind each module. -First responder access maintained and from adjacent roof. -Wire run from array to connection is 40 feet. System meets the requirements of NFPA 70th Edition, Chapter 11.12 Install will be done to Manufacturer Spec Robert Sheets 1301 W 1st St. Ft. Pierce, FL 34982 2' Access Pathway 2' Access Pathway Godwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 1/11/2021 RF . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233Designed as per ASCE7-16 Modules mounted flush to roof no higher than 6" above surface. Customer Info: S-2 Roof Section Pitch Roof Rafter and Spacing Overhang Notes: R1-R2 4/12 2"x4" @ 24 O.C.20" Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: Inverter Type: PV Panel: Racking: Total Wattage: Roof Type: Wind Load: Fastener Type: Enphase IQ7 (37) Jinko 315M-60HBL Chiko 11,655W Composition Shingles 7 to 20 Deg Use 5/16" Dia 5" Lags Truss Install will be done to Manufacturer Spec Robert Sheets 1301 W 1st St. Ft. Pierce, FL 34982 General Notes (R1): - Sunmodo Nano Mount are secured to rafters @ 48" O.C. in Zone 1, @ 24" O.C in Zone 2e, @ 24" O.C. in Zone 2r, & @ 24" O.C. in Zone 3 using 5/16" x 5" stainless steel Lag bolts. - Subject roof has One layer. - All penetrations are sealed. General Notes (R2): - Sunmodo Nano Mount are secured to rafters @ 48" O.C. in Zone 1, @ 24" O.C in Zone 2e, @ 24" O.C. in Zone 2n, @ 24" O.C. in Zone 2r, @ 24" O.C in Zone 3e, & @ 24" O.C. in Zone 3r using 5/16" x 5" stainless steel Lag bolts. - Subject roof has One layer. - All penetrations are sealed. Godwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 1/11/2021 RF . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 In Case of Emergency Call Florida Power Management at 407-926-0233 #12 AWG THWN for Home runs under 100' #10 AWG THWN for Home runs over 100' (1) Line 1 (1) Line 2 Per Circuit #8 AWG THWN (1) EGC Inside @ least 3/4" Conduit (tbd on site) Photovoltaics: (37) Jinko 315M-60HBL Inverters: (37) Enphase IQ7 Micro Inverters Circuits: (2) circuits of (16) Modules (1) circuit of (5) Modules Maximum Inverters Per 20A Circuit (16)Roof Enphase Combiner Box Meter Line Side Tap 60A Service Rated Fused Disconnect Neutral to Ground Bond AC Disconnect (1) - 20A Breaker Per Circuit 50A Fuse #6 AWG THWN (1) Line 1 (1) Line 2 (1) Neutral #8 (1) EGC in @ least 3/4" Conduit Typically #6 AWG THWN (1) Line 1 (1) Line 2 (1) Neutral in @ least 3/4" Conduit Typically Disconnect Customer Info: (1)#8 AWG EGC & GEC E-1 Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: AC Max Output Current AC Max Output Current * 1.25% Overcurrent Protection (A) No. of Current Carrying Cond Conductor Gauge (AWG) Enphase Output Ckt Per String To Overcurrent Protection Device Enphase Total Output Ckt AC Max Output Current AC Max Output Current * 1.25% Overcurrent Protection (A) No. of Current Carrying Cond Conductor Gauge (AWG) Refer to NEC 312.8 for Conditions on taps in switch and over current devices Enclosures. If the conditions are not met a tap box will need to be installed. GEC NOTES Provide a grounding electrode system for an ungrounded system per 690.47(C)(3). - GEC must be installed per 250.64 - GEC must be continuous un-spliced or irreversibly spliced from inverter to existing service ground system or continuous from the arrays to the existing service ground system. - If GEC is not continuous from the array to the existing service ground an additional ground system must be provided from the arrays to a grounding electrode per 690.47(D) - GEC must be min #8 AWG and installed in conduit - If GEC is not in conduit, it must be #6 min per NEC 690.54 Main Distribution Panel 150A Main NEC LABEL NOTES: 1. THE WARNING SIGN(S) OR LABEL(S) SHALL COMPLY WITH NEC 110.21(B) 2. LABELS SHALL BE SUITABLE FOR THE ENVIRONMENT WHERE THEY ARE INSTALLED. 3. LABELS TO BE A MIN LETTER HEIGHT OF 3/8" AND PERMANENTLY AFFIXED. 4. LABELS SHALL ALSO COMPLY WITH THE SPECIFIC REQUIREMENTS OF THE AUTHORITY HAVING JURISDICTION. WARNING ELECTRIC SHOCK HAZARD DO NOT TOUCH TERMINALS. TERMINALS ON BOTH THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION WARNING: DUAL POWER SUPPLY SOURCES: UTILITY GRID AND PV SOLAR ELECTRIC SYSTEM WARNING: INVERTER OUTPUT CONNECTION: DO NOT RELOCATE THIS OVERCURRENT DEVICE PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN WARNING: DEDICATED SOLAR PANEL DO NOT CONNECT ANY OTHER LOADS WARNING:PHOTOVOLTAIC POWER SOURCE Manual Lockable Disconnect Install will be done to Manufacturer Spec Note: -All wiring to meet the 2017 NEC and Florida electric codes. 60A Disconnect -Type of conduit to be determined on site by contractor. Including the label below NEMA 3R Junction BoxBlack - L1 Red - L2 Green - Ground Robert Sheets 1301 W 1st St. Ft. Pierce, FL 34982 Located Adjacent to Utility Meter In Compliance with NEC 705(D)(2) Enphase IQ Trunk Cable Q-12-240 #12AWG THHN-THWN-2 UL 9703 Grounding Conductor to be bare #8 Awg #X-IQ-AM1-240 Solar Combiner Box 240V Inverter Type: Enphase IQ7 PV Panel: (37) Jinko 315M-60HBL Total Wattage: 11,655W System meets the grounding requirements of NEC 690.43 SOLAR PV SYSTEM EQUIPPED WITH RAPID SHUTDOWN TURN RAPID SHUTDOWN SWITCH TO THE "OFF" POSITION TO SHUT DOWN PV SYSTEM AND REDUCE SHOCK HAZARD IN THE ARRAY. SOLAR ELECTRIC PV PANELS 3/8 IN MIN. TEXT 3/16 IN MIN. TEXT ! WARNING ! POWER SOURCE OUTPUT CONNECTION: DO NOT RELOCATE THIS OVERCURRENT DEVICE PHOTOVOLTAIC SYSTEM ! AC DISCONNECT ! RATED AC OUTPUT CURRENT: 37A NOMINAL OPERATING VOLTAGE: 240VAC 3 Circuits Godwin Engineering and Design, LLC 8378 Foxtail Loop Pensacola, FL 32526 D. Chad Godwin, PE Chad@godwineng.com 5'-6" 3'-3" 7' Splice Bar Chiko Mids 4' Chiko Ends/End Caps Chiko Ground Lugs Chiko Rail 12358 10 32 2 8 Jinko 315M-60HBLEnphase IQ7 37 37 Flashed Combiner 14'23 60A Fused Disconnect 1250A Fuses 320A Breakers 1Enphase Combiner Box Sunmodo Nano Mounts R-1 # Modules (5) Pitch: 20° Azimuth: 180° R-2 # Modules (32) Pitch: 20° Azimuth: 180° 30'-2" 15'-1" 62'-4" 17'-4" 12'-0"20'-2" L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L LLL L L L L L L L L L L L L L L LL L L L 1/11/2021 RF . . 1331 Green Forest Ct, Ste 3 Winter Garden FL, 34787 407-926-0233 Customer Info: S-1A Date: Drawn by: Revised by: Rev #: 00 Rev Date: Page: Inverter Type: PV Panel: Racking: Total Wattage: Roof Type: Wind Load: Fastener Type: Enphase IQ7 (37) Jinko 315M-60HBL Chiko 11,655W Composition Shingles 7 to 20 Deg Use 5/16" Dia 5" Lags Install will be done to Manufacturer Spec Robert Sheets 1301 W 1st St. Ft. Pierce, FL 34982 Plans satisfy zones FBC-1510.7.1 Max cantilever is 16" as per manufacturer spec. Max Cantilever = Max Span * (13)=48"*(13)=16"Zone 1: Zone 2e: Zone 2n: Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8" Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8" Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8"Zone 2r: Zone 3e: Zone 3r: Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8" Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8" Max cantilever is 16" as per manufacturer spec. Max Cantilever = Max Span * (13)=48"*(13)=16"Zone 1: Zone 2e:Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8" Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8"Zone 2r: Zone 3:Max cantilever is 8" as per manufacturer spec. Max Cantilever = Max Span * (13)=24"*(13)=8" R2: R1: GODWIN ENGINEERING AND DESIGN, LLC 8378 Foxtail Loop, Pensacola, FL 32526 | (850)712-4219 | chad@godwineng.com January 12, 2021 To: St. Lucie County Building Division 2300 Virginia Avenue Ft. Pierce, FL 34982 Re: Sheets – Residential PV Roof Mount Installation 1301 W 1st St. Ft. Pierce, FL 34982 Plan Reviewer, This letter is regarding the installation of a new roof mounted Solar PV System on the existing residential structure at the address above. I have reviewed the attachment plan and have determined that the roof mounted PV system is in compliance with the applicable sections of the following Codes as amended and adopted by the jurisdiction: 2020 Florida Building Code 7th Edition, FBC ASCE 7 Min. Design Loads for Buildings & Other Structures Per 2020 FBC, the Roof Mounted PV system will be subject to the following design criteria: Design Wind Speed(Vult) - 160mph 3sec gust, Exposure Category – C The PV System consist of the modules, railing, and connection hardware. The system will add a dead load of approximately 3 psf to the roof. The existing roof covering is Asphalt Shingle with min. ½” plywood decking and 2” x 4” roof trusses 24” O.C. The roofing, decking, and roof trusses are in good condition. The existing structure will be adequate for supporting the additional PV dead load and wind loads. The securement method of the PV system is to be flush mounted to the asphalt shingle roof with the Chiko railing and flashings/attachments. The attachments can be attached up to 48” apart in roof zone 1, and 24” apart in roof zones 2e, 2r, & 3. The mounts should be staggered, where possible, to allow distribution of the design loads evenly to the structure. The mounts shall be installed with a min. 5/16” lag screw with minimum 2-5/16” thread length. Please see attached documents and contact me should you have any questions. Sincerely, D. Chad Godwin, PE 81360 Exp. 02/28/2021 Risk Category II Table 1.5‐1 Load, PSf Basic Wind Speed (Ult) 160 Figure 26.5‐1B 3 Wind Speed (asd) 124 IBC 1609.3.1 0 Roof Angle 20 °0 Effective Wind Area 10.00 ft2 26.20 n/a Wind Load Parameters n/a Wind Directionality Kd 0.85 Table 26.6‐1 n/a Exposure Cat. B,C, or D C Section 26.7 n/a Topographic factor Kzt 1.00 26.8 or 26.8.2 n/a Ground Elevation Factor Ke 0.86 Table 26.9‐1 n/a Velocity Exposure Coefficient Kz 0.85 Table 26.10‐10 Array Edge Factor gE 1.50 29.4.4 n/a Solar Panel Equalization Factor ga 0.80 Fig. 29.4‐8 see calc Velocity Pressure qp 24.43 psf qh=0.00256 KzKztKdKeV2 n/a Mean Roof Height h 20.00 ft 0.4h 8.00 ft 360 in 3.00 ft Roof Zone Set Back a 3.00 ft 12r2e3 GCp ‐1.80 ‐2.40 ‐2.60 ‐2.60 uplift GCp 0.70 0.70 0.70 0.70 downward p = qh(GCp)(gE)(γa)‐52.77 ‐70.37 ‐76.23 ‐76.23 psf uplift 29.4‐7 p = qh(GCp)(gE)(γa)20.52 20.52 20.52 20.52 psf downward 29.4‐7 Module Length C ft Module Width B ft Module Area A ft2 Total Design Load (Uplift)Pdesign ‐49.77 ‐67.37 ‐73.23 ‐73.23 psf Total Design Load (Downforce)Pdesign 20.52 20.52 20.52 20.52 psf Design Load per Module Tup ‐898.35 ‐1215.85 ‐1321.69 ‐1321.69 lbs Tup = A * Pdesign Design Load per Module Tdown 370.42 370.42 370.42 370.42 lbs Tdn = A * Pdesign Distributed Load (Uplift)Pdist. Up ‐134.89 ‐182.56 ‐198.45 ‐198.45 plf Tup / B*2 Distributed Load (Down)Pdist. Down 55.62 55.62 55.62 55.62 plf Tdn / B*2 Railspan Between Anchor Points L 4 2 2 2 ft Point Load per Mount (Uplift) R ‐539.55 ‐365.12 ‐396.90 ‐396.90 lbs Point Load per Mount (Down) R 111.24 55.62 55.62 55.62 lbs 12r2e3 Specific Gravity G 0.55 0.55 0.55 0.55 Table 11.2A, NDS 2005, page 68 (SYP) Diameter of Lag Screw D 5/16 5/16 5/16 5/16 In Pullout Value of W 306.8697 306.8697 306.8697 306.8697 lbs/in W=1800 G3/2 D3/4 # of Lag screws 1111 Thread Length Td 2.8 2.8 2.8 2.8 In Table L2, NDS 2005 Design Pullout Value per Mount Wt 859.2353 859.2353 859.2353 859.2353 Wt = W * # of Lags *Td SAFTEY FACTOR SF 1.59 2.35 2.16 2.16 Calculation: SF=Wt/R (Uplift) 12r2e3 Max Cantilever M 16 8 8 8 in Max rail span * 33% Flood Load, Fa 5.42 3.33 Design Calculations for the Use of Attachment to Roof Truss/Rafter Wind, W Self‐Straining, T Snow, S Rain, R Roof Live, Lr Wind‐on‐Ice, Wi Maximum Cantilever from Last attachment Table 1.1 ‐ Pullout Value for Single Lag Screw Fluid, F ASCE 7‐16 CHAPTER 29 WIND LOADS ‐ Rooftop Solar Panels Minimum Design Loads ‐ Part 1: Enclosed(Hip, h<60ft, 7°<θ<20°) Load Types Dead Load, D Weight of Ice, Di Earthquake, E 18.05 Zone Figure 30.3‐2G(Hip roof, h<60ft, 7°<θ<20°) least horizontal dim 10% of least horizontal dim Live Load, L Lateral Earth psi, H