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Item 6F - PlansLA K E C A R I L L O N L N MAIN LOAD CENTER & UTILITY METERVISIBLE, LOCKABLE, LABELED AC DISCONNECT PROJECT NAME: DRAWN DATE: DRAWN BY: ARCHITECT/FIELD DRAWING INFORMATION PLAN ORIENTATION OPTIONS ARE PRELIMINARY, AND ARE SUBJECT TO REVISION FOR OPTIMAL USE. SOLAR ARRAY LOCATIONS ARE TO BE REVIEWED AND APPROVED BY OWNER AND/OR ARCHITECT OF RECORD TO VERIFY SYSTEM LOCATION, FOR VENTILATION OBSTRUCTION AND POSSIBLE RELOCATION OF VENT AND/OR PIPE JACKS. FIELD VERIFICATION OF ROOF STRUCTURE, AND SOLAR ARRAY LOCATION IS REQUIRED PRIOR TO INSTALLATION FOR ALL EXISTING STRUCTURES WHERE NEW SOLAR ARRAYS ARE TO BE INSTALLED. DRAWING NOTES: PHOTOVOLTAIC SOLAR MODULE MFG/MODEL: MODULE RATED AT: MULTIPLY BY QTY. OF MODULES: ARRAY SYSTEM SIZE: SYSTEM AZIMUTH: MOUNTING HEIGHT: ROOF PITCH: RESIDENCE JURISDICTION: ° -STORY :12 821 LAKE CARILLON LN SOUTLAKE, TX 76092 SOUTLAKE 310 W 22 6.820 kW 180 8 1 TK 8/7/20 REV DESCRIPTION DATE MYO GROUP PV-1PLOT PLAN SCALE: 1"=20'-0"1 SHEET INDEX PLOT PLAN SOLAR LAYOUT ATTACHMENT DETAILS ELECTRICAL LINE DIAGRAM NOTES: - SYSTEM FOLLOWS ANY/ALL FIRE CODE SETBACKS PER ORDINANCES OF THE SOUTLAKE. - ALL PROJECTS WILL COMPLY WITH THE ORDINANCES OF THE SOUTLAKE. - PRODUCT DATA SHEETS WILL BE INCLUDED. - ALL SIGNAGE TO BE PLACED IN ACCORDANCE WITH LOCAL BUILDING CODE INSTALL A 6.820 kW GRID-TIED PHOTOVOLTAIC SYSTEM TOTALING (22) MISSION SOLAR MSE310SQ8T SOLAR MODULES WITH (1) SOLAREDGE SE6000H-US INVERTER, FLUSH MOUNTED ON A COMPOSITE SHINGLE ROOF AND INTERCONNECTED VIA MAIN LOAD CENTER. ALL SUPPLIED EQUIPMENT IS UL LISTED 2017 NATIONAL ELECTRIC CODE 2018 INTERNATIONAL RESIDENTIAL CODE 2018 INTERNATIONAL BUILDING CODE 2018 INTERNATIONAL FIRE CODE SCOPE OF WORK CODE COMPLIANCE PV-1 PV-2 PV-3 PV-4 - SYSTEM FOLLOWS ANY/ALL FIRE CODE SETBACKS PER ORDINANCES OF THE SOUTLAKE. - ALL PROJECTS WILL COMPLY WITH THE ORDINANCES OF THE SOUTLAKE. - PRODUCT DATA SHEETS WILL BE INCLUDED. - ALL SIGNAGE TO BE PLACED IN ACCORDANCE WITH LOCAL BUILDING CODE - AREA OF ARRAY: 393.6 SQ. FT. ESID #: 1044372000 0324613 8-18-2020 STRUCTURAL ONLY *VISIBLE, LOCKABLE, LABELED AC DISCONNECT TO BE LOCATED WITHIN 10' OF UTILITY METER 3' - 1 1 " 16 ' - 6 " 14 ' - 4 " 8'-6"36'-4"(E) MAIN LOAD CENTER, INSIDE GARAGE (E) UTILITY METER (N) VISIBLE, LOCKABLE, LABELED AC DISCONNECT (N) SOLAREDGE SE6000H-US INVERTER LA K E C A R I L L O N L N (N) IRONRIDGE ATTACHMENTS @ 72" MAX. SPAN (22) MISSION SOLAR MSE310SQ8T SOLAR MODULES PROJECT NAME: DRAWN DATE: DRAWN BY: ARCHITECT/FIELD DRAWING INFORMATION PLAN ORIENTATION OPTIONS ARE PRELIMINARY, AND ARE SUBJECT TO REVISION FOR OPTIMAL USE. SOLAR ARRAY LOCATIONS ARE TO BE REVIEWED AND APPROVED BY OWNER AND/OR ARCHITECT OF RECORD TO VERIFY SYSTEM LOCATION, FOR VENTILATION OBSTRUCTION AND POSSIBLE RELOCATION OF VENT AND/OR PIPE JACKS. FIELD VERIFICATION OF ROOF STRUCTURE, AND SOLAR ARRAY LOCATION IS REQUIRED PRIOR TO INSTALLATION FOR ALL EXISTING STRUCTURES WHERE NEW SOLAR ARRAYS ARE TO BE INSTALLED. DRAWING NOTES: PHOTOVOLTAIC SOLAR MODULE MFG/MODEL: MODULE RATED AT: MULTIPLY BY QTY. OF MODULES: ARRAY SYSTEM SIZE: SYSTEM AZIMUTH: MOUNTING HEIGHT: ROOF PITCH: RESIDENCE JURISDICTION: ° -STORY :12 821 LAKE CARILLON LN SOUTLAKE, TX 76092 SOUTLAKE 310 W 22 6.820 kW 180 8 1 TK 8/7/20 REV DESCRIPTION DATE MYO GROUP SOLAR LAYOUT SCALE: 3/32"=1'-0"1 SOLAR MODULE: MECHANICAL DATA PANELS: (22) MISSION SOLAR MSE310SQ8T MODULE DIMENSIONS: 65.51" x 39.33"x 1.56" MODULE WEIGHT: 40.1 lbs MODULE SQUARE FOOTAGE: 17.89 sq ft MODULE WEIGHT/MODULE AREA: 2.74 lb/sq. ft. SOLAR ARRAY: MECHANICAL DATA WEIGHT OF ARRAY: 882.2 lbs. AREA OF ARRAY: 393.6 sq ft. ARRAY DEAD LOAD WILL NOT EXCEED: 4.0 lb/sq ft. ARRAY DEAD LOAD: 2.74 lb/sq ft. No. ATTACHMENTS: 30 CONNECTOR TYPE: 5/16" X 3.5" S.S. LAG SCREW (2.5" MIN EMBEDMENT) PV-2 ESID #: 1044372000 0324613 8-18-2020 STRUCTURAL ONLY IRONRIDGE L-FOOT W/ FLASHFOOT MOUNTING SYSTEM SCALE: 1"=1'-0"1 3 3 ° IRONRIDGE MOUNTING CLAMP IRONRIDGE L-FOOT 2X6 RAFTER @ 24" OC TYP W/ PLYWOOD 12 SOLAR MODULE COMP. SHINGLE 8 5/16" x 3 1/2" SS LAG BOLT INTO RAFTER(S) 2 1/2" MIN. EMBEDMENT SEALED W/ GEOCEL. IRONRIDGE XR 100 RAIL, TYP. IRONRIDGE FLASHFOOT PHOTOVOLTAIC MODULE SPECIFICATIONS MODEL: WEIGHT: WIDTH: LENGTH: MAX. ROOF LOAD: MAX. POINT LOAD: MISSION SOLAR MSE310SQ8T 40.1 LBS 39.33" 65.51" 2.69 LBS/SQFT 35.97 LBS/ATTACHMENT PROJECT NAME: DRAWN DATE: DRAWN BY: ARCHITECT/FIELD DRAWING INFORMATION PLAN ORIENTATION OPTIONS ARE PRELIMINARY, AND ARE SUBJECT TO REVISION FOR OPTIMAL USE. SOLAR ARRAY LOCATIONS ARE TO BE REVIEWED AND APPROVED BY OWNER AND/OR ARCHITECT OF RECORD TO VERIFY SYSTEM LOCATION, FOR VENTILATION OBSTRUCTION AND POSSIBLE RELOCATION OF VENT AND/OR PIPE JACKS. FIELD VERIFICATION OF ROOF STRUCTURE, AND SOLAR ARRAY LOCATION IS REQUIRED PRIOR TO INSTALLATION FOR ALL EXISTING STRUCTURES WHERE NEW SOLAR ARRAYS ARE TO BE INSTALLED. DRAWING NOTES: PHOTOVOLTAIC SOLAR MODULE MFG/MODEL: MODULE RATED AT: MULTIPLY BY QTY. OF MODULES: ARRAY SYSTEM SIZE: SYSTEM AZIMUTH: MOUNTING HEIGHT: ROOF PITCH: RESIDENCE JURISDICTION: ° -STORY :12 821 LAKE CARILLON LN SOUTLAKE, TX 76092 SOUTLAKE 310 W 22 6.820 kW 180 8 1 TK 8/7/20 REV DESCRIPTION DATE MYO GROUP PV-3PLAQUES SHALL BE PLASTIC ENGRAVED IN A CONTRASTING COLOR TO THE PLAQUE. PLAQUE SHALL BE ATTACHED TO THE SERVICE EQUIPMENT WITH POP-RIVETS OR ADHESIVE. ALL PLAQUES AND SIGNAGE REQUIRED BY THE LATEST EDITION OF NATIONAL ELECTRICAL CODE, WILL BE INSTALLED AS REQUIRED. ALTERNATE POWER SOURCE PLACARD SHALL BE METALLIC OR PLASTIC, ENGRAVED OR MACHINE PRINTED LETTERS IN A CONTRASTING COLOR TO THE PLAQUE. THIS PLAQUE WILL BE ATTACHED BY POP RIVETS OR SCREWS OR OTHER APPROVED METHOD. IF EXPOSED TO SUNLIGHT, IT SHALL BE UV RESISTANT. PHOTOVOLTAIC DC CONDUCTORS ENTERING THE BUILDING SHALL BE INSTALLED IN METAL CONDUIT AND THE CONDUIT SHALL BE LABELED, "CAUTION DC CIRCUIT" OR EQUIVALENT EVERY 5 FT. EXPOSED NON-CURRENT CARRYING METAL PARTS OF MODULE FRAMES, EQUIPMENTS, AND CONDUCTOR ENCLOSURES SHALL BE GROUNDED IN ACCORDANCE WITH 250.134 OR 250.136(A) REGARDLESS OF VOLTAGE. EACH MODULE SHALL BE GROUNDED USING THE SUPPLIED CONNECTION POINT IDENTIFIED ON THE MODULE AND THE MANUFACTURER'S INSTRUCTIONS. IF THE EXISTING GROUNDING ELECTRODE SYSTEM CAN NOT BE VERIFIED OR IS ONLY METALLIC WATER PIPING, IT IS THE CONTRACTOR'S RESPONSIBILITY TO INSTALL A SUPPLEMENTAL GROUNDING ELECTRODE. ALL SOLAR MODULES, EQUIPMENT AND METALLIC COMPONENTS ARE TO BE BONDED. AC PHOTOVOLTAIC DISCONNECT WARNING ELECTRICAL SHOCK HAZARD DO NOT TOUCH TERMINALS. TERMINALS ON BOTH THE LINE AND LOAD SIDE MAY BE ENERGIZED IN THE OPEN POSITION WARNING THE DISCONNECT OF THE GROUNDED CONDUCTOR(S) MAY RESULT IN OVERVOLTAGE ON THE EQUIPMENT NEC 690.31(I) - AT THE INVERTER NEC 690.13(B) - ON AC DISCONNECT/BREAKER/POINTS OF CONNECTION: NEC 690.13(B) - AT JUNCTION BOX/COMBINER BOXES/BREAKER PANEL/POLE BOXES/AC DISCONNECTS/MAIN SERVICE DISCONNECT: WARNING POWER SOURCE OUTPUT CONNECTION. DO NOT RELOCATE THIS OVERCURRENT DEVICE NEC 705.12(B)(2)(c) - BY BREAKER AT DISTRIBUTION EQUIPMENT: NEC 690.54 - ON AC DISCONNECT/BREAKER/ POINT OF INTERCONNECTION/BREAKER PANEL/PULL BOXES CAUTION PHOTOVOLTAIC SYSTEM IS BACKFED NEC 690.13(F) - AT MAIN SERVICE DISCONNECT: PHOTOVOLTAIC SYSTEM AC SYSTEM SPECIFICATIONS MAX. AC OUTPUT CURRENT: A OPERATING AC VOLTAGE: V NEC 690.31(G)(3)(4) - ON CONDUIT WARNING TURN OFF PHOTOVOLTAIC AC DISCONNECT PRIOR TO WORKING INSIDE PANEL NEC 110.27(C) - AT JUNCTION BOX/COMBINER BOXES/BREAKER PANEL/POLE BOXES/AC DISCONNECTS/MAIN SERVICE DISCONNECT: WARNING PHOTOVOLTAIC POWER SOURCE NEC 705.12(D)(3), NEC 690.59 - PRODUCTION/NET METER (BI-DIRECITIONAL)/MAIN SERVICE DISCONNECT WARNING DUAL POWER SOURCE SECOND SOURCE IS PHOTOVOLTAIC SYSTEM MAIN PHOTOVOLTAIC SYSTEM DISCONNECT NEC 690.31(B) - AT MAIN SERVICE DISCONNECT/UTILITY METER DO NOT DISCONNECT UNDER LOAD NEC 690.15(C) & 690.33(E)(2) - AT MAIN SERVICE DISCONNECT NEC 690.52 - ON AC DISCONNECT/BREAKER/POINT OF CONNECTION: OPERATING AC VOLTAGE: V OPERATING AC FREQUENCY: Hz MAXIMUM AC POWER: kW MAXIMUM AC CURRENT: A MAXIMUM OCPD RATING: A LABELS ESID #: 1044372000 0324613 8-18-2020 STRUCTURAL ONLY *VISIBLE, LOCKABLE, LABELED AC DISCONNECT TO BE LOCATED WITHIN 10' OF UTILITY METER 60A VISIBLE, LOCKABLE, LABELED AC DISCONNECT THWN-2 IN 3/4" EMT AWG #8 L1 = BLACK L2 = RED N = WHITE AWG #8 G = GREEN PV BREAKER 40 A DPB LOCATED FARTHEST FROM MSD NEW, IF NO EXISTING GROUNDING ELECTRODE NEW, IF NO EXISTING GROUNDING ELECTRODE 200 A MAIN DISCONNECT EXISTING 200 A RATED MAIN SERVICE PANEL BI-DIRECTIONAL UTILITY METER 1 PHASE, 3 WIRE 120/240 V SOLAR MODULE/INVERTER MANUFACTURER AND QUANTITY: (22) MISSION SOLAR MSE310SQ8T SOLAR MODULES (1) SOLAREDGE SE6000H-US INVERTER THWN-2 IN 3/4" EMT AWG #10 POS = RED NEG = BLACK AWG #8 G = GREEN PHOTOVOLTAIC ARRAY JUNCTION BOX INVERTER (240V) & INTEGRATED DC DISCONNECT W/ INTERNAL GFDI & AFCI EGC DC-DC POWER OPTIMZER BRANCH CIRCUIT 1 = 11 MODULES BRANCH CIRCUIT 2 = 11 MODULES AWG #10 PV WIRE IN FREE AIR POS = RED NEG = BLACK AWG #6 G = BARE CU PROJECT NAME: DRAWN DATE: DRAWN BY: ARCHITECT/FIELD DRAWING INFORMATION PLAN ORIENTATION OPTIONS ARE PRELIMINARY, AND ARE SUBJECT TO REVISION FOR OPTIMAL USE. SOLAR ARRAY LOCATIONS ARE TO BE REVIEWED AND APPROVED BY OWNER AND/OR ARCHITECT OF RECORD TO VERIFY SYSTEM LOCATION, FOR VENTILATION OBSTRUCTION AND POSSIBLE RELOCATION OF VENT AND/OR PIPE JACKS. FIELD VERIFICATION OF ROOF STRUCTURE, AND SOLAR ARRAY LOCATION IS REQUIRED PRIOR TO INSTALLATION FOR ALL EXISTING STRUCTURES WHERE NEW SOLAR ARRAYS ARE TO BE INSTALLED. DRAWING NOTES: PHOTOVOLTAIC SOLAR MODULE MFG/MODEL: MODULE RATED AT: MULTIPLY BY QTY. OF MODULES: ARRAY SYSTEM SIZE: SYSTEM AZIMUTH: MOUNTING HEIGHT: ROOF PITCH: RESIDENCE JURISDICTION: ° -STORY :12 821 LAKE CARILLON LN SOUTLAKE, TX 76092 SOUTLAKE 310 W 22 6.820 kW 180 8 1 TK 8/7/20 REV DESCRIPTION DATE MYO GROUP PV-4 ESID #: 1044372000 0324613 Roof Mount System Strength Tested All components evaluated for superior structural performance. PE Certified Pre-stamped engineering letters available in most states. Class A Fire Rating Certified to maintain the fire resistance rating of the existing roof. Design Software Online tool generates a complete bill of materials in minutes. Integrated Grounding UL 2703 system eliminates separate module grounding components. 20 Year Warranty Twice the protection offered by competitors. Built for solar’s toughest roofs. IronRidge builds the strongest roof mounting system in solar. Every component has been tested to the limit and proven in extreme environments. Our rigorous approach has led to unique structural features, such as curved rails and reinforced flashings, and is also why our products are fully certified, code compliant and backed by a 20-year warranty. Datasheet © 2014 IronRidge, Inc. All rights reserved. Visit www.ironridge.com or call 1-800-227-9523 for more information. Version 1.42 XR Rails Attachments Clamps & Grounding Datasheet Design Assistant Go from rough layout to fully engineered system. For free. Go to IronRidge.com/rm MacBook Pro NABCEP Certified Training Earn free continuing education credits, while learning more about our systems. Go to IronRidge.com/training Free Resources XR100 Rail The ultimate residential solar mounting rail. • 8’ spanning capability • Heavy load capability • Clear & black anod. finish Internal Splices All rails use internal splices for seamless connections. • Self-tapping screws • Varying versions for rails • Grounding Straps offered FlashFoot Anchor, flash, and mount with all-in-one attachments. • Ships with all hardware • IBC & IRC compliant • Certified with XR Rails Slotted L-Feet Drop-in design for rapid rail attachment. • High-friction serrated face • Heavy-duty profile shape • Clear & black anod. finish Standoffs Raise flush or tilted systems to various heights. • Works with vent flashing • Ships pre-assembled • 4” and 7” Lengths Tilt Legs Tilt assembly to desired angle, up to 45 degrees. • Attaches directly to rail • Ships with all hardware • Fixed and adjustable End Clamps Slide in clamps and secure modules at ends of rails. • Mill finish & black anod. • Sizes from 1.22” to 2.3” • Optional Under Clamps Grounding Mid Clamps Attach and ground modules in the middle of the rail. • Parallel bonding T-bolt • Reusable up to 10 times • Mill & black stainless T-Bolt Grounding Lugs Ground system using the rail’s top slot. • Easy top-slot mounting • Eliminates pre-drilling • Swivels in any direction Accessories Provide a finished and organized look for rails. • Snap-in Wire Clips • Perfected End Caps • UV-protected polymer XR10 Rail A low-profile mounting rail for regions with light snow. • 6’ spanning capability • Moderate load capability • Clear & black anod. finish XR1000 Rail A heavyweight mounting rail for commercial projects. • 12’ spanning capability • Extreme load capability • Clear anodized finish MSE PERC 60 High Po wer PERC Rooftop Modu le CERTI FIED RELIABILITY ›Tested to UL1703 & IEC standards ›PID resistant ADVANCED TECHNOLOGY ›PERC and 5 busbar drive >19.2% module efficiency ›Ideal for residential applications EXTREME WEATHER RESILIENCE ›5631 Pa front and back load (117 psf) tested load to UL1703 BAA COMPLIANT FOR GOVERNMENT PROJECTS High-Power, American Quality Mission Solar Energy is headquartered in San Antonio, TX., with module production facilities on-site. We produce American quality solar modules ensuring the highest power output and reliability to our customers. Our product line is well suited for residential, commercial and utility applications. Every Mission Solar Energy solar module is certified and surpasses industry standard regulations, proving excellent performance over the long-term. 1 5 10 15 20 25 YEARS 97% 80.2% 90.7% 100% 90% 80% 70% Mission Solar Energy Warranty FRAME-TO-FRAME WARRANTY ›Buy American Act ›American Recovery & Reinvestment Act 25-YEAR* CEC Please contact Mission Solar Energy if you have questions or concerns about certification of our products in your area. * Standard 12-year product warranty extendable to 25 years with registration: https://www.missionsolar.com/warranty/ CERTIFICATIONS IEC 61215 - IEC 61730 - IEC 61701 - UL 1703 - Salt mist RESIDENTIAL | COMMERCIAL www.missionsolar.com | info@missionsolar.com TM 315-325W CLASS LEADING POWER OUTPUT 19.24% MAXIMUM EFFICIENCY -0~+3% POSITIVE POWER TOLERANCE TM DOCUMENT #: C-SA2-MKTG-0018 REVISION #: R1 REVISION DATE: 1/13/2020 ELEC TRICAL SPEC IFICAT IONS MSE320SR8T 320 18.94 0˜+3% 10.028 40.80 9.351 34.22 20 MSE315SR8T 315 18.65 0˜+3% 9.997 40.44 9.253 34.04 20 MSE325SR8T 325 19.24 0˜+3% 10.060 41.14 9.387 34.62 20 Wp % A V A V Pmax Isc Voc Imp Vmp Module Type Electrical Parameters at Standard Test Conditions (STC) Power Output Module Efficiency Tolerance Short-Circuit Current Open Circuit Voltage Rated Current Rated Voltage Fuse Rating CERT IFICAT IONS & TESTS IEC UL UL 1703 listed 61215 - 61730 - 61701 - Salt mist CEC TEM PERAT URE COEF FICIENTS OPERATING CONDITIONS SHIPPING INFORMATION MECHANICAL DATA 46.09°C (±2°C) -0.377% / °C -0.280% / °C 0.039% / °C Maximum System Voltage Operating Temperature Range Maximum Series Fuse Rating Fire Safety Classification Front & Back Load (UL standard) Hail Safety Impact Velocity 1,000Vdc -40°C (-40°F) to +85°C (185°F) 20A Type 1, Class C 5631 Pa (117 psf) Tested to UL1703 standard 25mm at 23 m/s Solar Cells Cell Orientation Front View Back View Current-voltage characteristics with dependence on irradiance and module temperature BASIC DESIGN (UNITS: mm) P-type mono-crystalline silicon (158.75mm) 60 cells (6x10), 5 busbar 1676mm x 1008mm x 40mm (65.98 in. x 39.68 in. x 1.58 in.) 20 kg (44lb) 3.2mm (0.126 in.) tempered, low-iron, anti-reflective coating Anodized aluminum alloy Ethylene vinyl acetate (EVA) Protection class IP67 with 3 bypass-diodes PV wire, 1m (39.37 in.), 4mm2 / 12 AWG MC4 Compatible Module Dimension Weight Front Glass Frame Encapsulant J-Box Cables Connector Panels 936 728 Height 42.45” Pallets 36 28 Weight 1,198lbs 320 W 299.52 kW 232.96 kW Width 45.50” Length 67.00” Double stack Double stack Panels 26Pallet Container FT 53’ 40’ Normal Operating Cell Temperature (NOCT) Temperature Coefficient of Pmax Temperature Coefficient of Voc Temperature Coefficient of Isc 10 20 30 40 50 0 2 4 6 8 10 12 0 MSE295SQ5T: 295Wp, 60 CELL SOLAR MODULE E CURVE 305.1 W Cells Temp. =25˚C Mission Solar Energy | 8303 S. New Braunfels Ave., San Antonio, Texas 78235 info@missionsolar.com | www.missionsolar.com PERC 60 CLASS LEADING 315-325W Mission Solar Energy reserves the right to make specification changes without notice Incident Incident Incident Incident Incident Irrd. = 1000 W/m2 Irrd. = 800 W/m2 Irrd. = 600 W/m2 Irrd. = 400 W/m2 Irrd. = 200 W/m2 C ur r e n t ] [ A MSE320SR8T: 320WP, 60 CELL SOLAR MODULE CURRENT - VOLTAGE CURVE Voltage [V] 1676 1008 1676 838 838 35 35 Drain Hole Grounding Hole Mounting Hole 77 300 1000 1008 10 15 DOCUMENT #: C-SA2-MKTG-0018 REVISION #: R1 REVISION DATE: 1/13/2020 Plainview Engineering LLC Texas Registered Engineering Firm #F-20680 Phone: 512.785.4179 August 18, 2020 Re: Rooftop Solar PV System 821 Lake Carillon Lane Southlake, TX 76092 To Whom It May Concern: I have reviewed the structural plans (sheets PV-2 & PV-3, drawn by MYO Group, dated 8/7/2020) for the roof-mounted solar PV (photovoltaic) system at the above-referenced address. The proposed solar array comprises (22) new flush-mounted PV panels. The structure to which the PV system will be attached is a wood-framed, single-family residence with a composition shingle, hip-style roof. The roof framing system generally consists of 2x6 SPF rafters spaced at 24” OC. This residence is categorized as a Risk Category II structure under the definitions provided in ASCE 7-10. Wind and snow design parameters for this project are as follows: • Basic Wind Speed (3 second gust): 115 MPH • Exposure Category: B • Ground Snow Load: 5 PSF The proposed solar panels will be affixed to the roof using components manufactured by IronRidge Corporation. Specifically, the roof attachments shall be IronRidge Flashfoot2 anchors and shall utilize a 5/16” diameter lag bolt with sufficient length to provide 2.5” of embedment into the rafters. Spanning between the attachments shall be IronRidge XR100 rail, which shall be oriented perpendicular to the rafters. Span limit shall be 72” and attachment points shall be staggered such that the attachments are evenly distributed among the rafters. Rail cantilever shall not exceed 18”. All structural racking components shall be installed and torqued according to IronRidge’s installation instructions using manufacturer-supplied hardware. Modules shall be top-clamped within the clamping range specified by the module manufacturer. The total distributed load of the PV array (including panels, racking, attachments, and wiring) shall not exceed 3 lb/SF. The structural design (racking, roof attachments) of this proposed solar PV system, as described above, conforms to the 2018 IRC, as adopted by the city of Southlake, TX. Solar PV arrays, since they consist of tightly-spaced glass panels, effectively prevent coincident application of live loads. I have analyzed the roof load combinations for the proposed PV array in accordance with Section R324.4.1 of the IRC. My conclusion is that the roof is capable of resisting the additional loads that will be imparted by the proposed PV system. Please do not hesitate to contact me should you have any questions about the design of this roof-mounted PV array. Respectfully, Bennett A Ford, P.E. (TX #109875) 8/18/2020