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Home My WebLink About315 N Lisabeth Common - PlanExpedited Permit Process for PV Systems - Micro-Inverter1 Expedited Permit Process for PV Systems Micro-Inverter The Solar America Board for Codes and Standards (Solar ABCs) Expedited Permit Pro- cess provides a means to differentiate systems that can be permitted quickly and easily due to their similarity with the majority of small-scale PV systems. Those systems with unique characteristics may be handled with small additions to this Expedited Permit Process or may require much more information, depending on the uniqueness of the installation. The following pages contain forms for the Micro-Inverter to use with the Expedited Per- mit Process. The Standard String, AC Module, and Supply-Side Connection forms are also available as interactive PDF files at www.solarabcs.org/permitting. In jurisdic- tions that have adopted the Expedited Permit Process for PV Systems, these forms can be filled out electronically and submitted in either printed form and via email. An elec- tronic format is used so that the supplied information is standardized and legible for the local jurisdiction. 315 N Lisabeth Common06/12/23 Expedited Permit Process for PV Systems — Micro-Inverter2 Expedited Permit Process for Small-Scale PV Systems Micro-Inverter The information in this guideline is intended to help local jurisdictions and contractors identify when PV system installations are simple, needing only a basic review, and when an installation is more complex. It is likely that 50%-75% of all residential systems will comply with these simple criteria. For projects that fail to meet the simple criteria, resolution steps have been suggested to provide as a path to permit approval. Required Information for Permit: 1. Site plan showing location of major components on the property. This drawing need not be exactly to scale, but it should represent relative location of components at site (see supplied example site plan). PV arrays on dwellings with a 3’ perimeter space at ridge and sides may not need separate ﬁre service review. 2. Electrical diagram showing PV array conﬁguration, wiring system, overcurrent protection, inverter, disconnects, required signs, and ac connection to building (see supplied standard electrical diagram). 3. Speciﬁcation sheets and installation manuals (if available) for all manufactured components including, but not limited to, PV modules, inverter(s), combiner box, disconnects, and mounting system. Step 1: Structural Review of PV Array Mounting System Is the array to be mounted on a deﬁned, permitted roof structure? l Yes l No If No due to non-compliant roof or a ground mount, submit completed worksheet for the structure WKS1. Roof Information: 1. Is the rooﬁng type lightweight (Yes = composition, lightweight masonry, metal, etc…)__________________________ ____________________________________________________________________________________________________ If No, submit completed worksheet for roof structure WKS1 (No = heavy masonry, slate, etc…). 2. Does the roof have a single roof covering? l Yes l No If No, submit completed worksheet for roof structure WKS1. 3. Provide method and type of weatherprooﬁng roof penetrations (e.g. ﬂashing, caulk).____________________________ Mounting System Information: 1. Is the mounting structure an engineered product designed to mount PV modules with no more than an 18” gap beneath the module frames? l Yes l No If No, provide details of structural attachment certiﬁed by a design professional. 2. For manufactured mounting systems, ﬁll out information on the mounting system below: a. Mounting System Manufacturer ___________Product Name and Model#________________________________ b. Total Weight of PV Modules and Rails ___________lbs c. Total Number of Attachment Points____________ d. Weight per Attachment Point (b÷c)_________________lbs (if greater than 45 lbs, see WKS1) e. Maximum Spacing Between Attachment Points on a Rail ______________inches (see product manual for maximum spacing allowed based on maximum design wind speed) f. Total Surface Area of PV Modules (square feet)_________________ ft2 g. Distributed Weight of PV Module on Roof (b÷f)_______________ lbs/ft2 If distributed weight of the PV system is greater than 5 lbs/ft2, see WKS1. Step 2: Electrical Review of PV System (Calculations for Electrical Diagram) In order for a PV system to be considered for an expedited permit process, the following must apply: 1. PV modules, utility-interactive inverters, and combiner boxes are identiﬁed for use in PV systems. 2. The PV array is composed of 4 series strings or less per inverter. 3. The total inverter capacity has a continuous ac power output 13,440 Watts or less 4. The ac interconnection point is on the load side of service disconnecting means (690.64(B)). 5. One of the standard electrical diagrams (E1.1, E1.1a, E1.1b, or E1.1c) can be used to accurately represent the PV system. Interactive PDF diagrams are available at www.solarabcs.org/permitting. Fill out the standard electrical diagram completely. A guide to the electrical diagram is provided to help the applicant understand each blank to ﬁll in. If the electrical system is more complex than the standard electrical diagram can effectively communicate, provide an alternative diagram with appropriate detail. 315 N Lisabeth Common06/12/23 Ex p e d i t e d P e r m i t P r o c e s s f o r P V S y s t e m s 3 Micro-Inverter Site Plan 315 N Lisabeth Common06/12/23 Ex p e d i t e d P e r m i t P r o c e s s f o r P V S y s t e m s 4 Micro-Inverter Electrical Diagram Contractor Name, Address and Phone: One-Line Standard Electrical Diagram for Micro-Inverter PV Systems Site Name: Site Address: System AC Size: SIZE FSCM NO DWG NO REV E1.1a SCALE NTS Date: SHEET Drawn By: Checked By: DESCRIPTION OR CONDUCTOR TYPE USE-2 or PV WIRE GEC EGC X ALL THAT APPLY EXTERIOR CABLE LISTED W/ INV. THWN-2 or XHHW-2 or RHW-2 GEC EGC X ALL THAT APPLY NO DC GEC IF 690.35 SYSTEM THWN-2 or XHHW-2 or RHW-2 GEC EGC X ALL THAT APPLY TAG 1 2 3 4 5 CONDUIT AND CONDUCTOR SCHEDULE COND. GAUGE MFG MFG NUMBER OF CONDUCTORS MFG Cable MFG Cable CONDUIT TYPE N/A N/A N/A SAME SAME CONDUIT SIZE N/A N/A N/A SAME SAME DESCRIPTION PV DC or AC MODULE DC/AC INVERTER (MICRO) J-BOX (IF USED) PV ARRAY AC COMB. PANEL (IF USED) GEN METER (IF USED) AC DISCONNECT (IF USED) SERVICE PANEL TAG 1 2 3 4 5 6 7 8 PART NUMBER NOTES FOR UNUSED MODULES PUT "N/A in BLANK ABOVE 1 1 3 2 3 EQUIPMENT SCHEDULE 2 _____ MICRO-INVERTERS IN BRANCH- CIRCUIT MOD ____ DC AC MOD ____ DC AC MOD ____ DC AC MOD ____ DC AC MOD ____ DC AC MOD ____ DC AC J-BOX 4 AC DISCO M BUILDING GROUNDING ELECTRODE G M UTILITY SERVICE MAIN SERVICE PANEL MAIN OCPD INVERTER OCPD 6 7 8 5 4 5 G SEE GUIDE APPENDIX D FOR INFORMATION ON MODULE AND ARRAY GROUNDING AC COMBINER PANEL G ____ MICRO-INVERTERS IN BRANCH- CIRCUIT 315 N Lisabeth Common06/12/23 Ex p e d i t e d P e r m i t P r o c e s s f o r P V S y s t e m s 5 Contractor Name, Address and Phone: Notes for One-Line Standard Electrical Diagram for Single-Phase PV Systems Site Name: Site Address: System AC Size: SIZE FSCM NO DWG NO REV E1.2a SCALE NTS Date: SHEET Drawn By: Checked By: MAX POWER-POINT CURRENT (IMP) MAX POWER-POINT VOLTAGE (VMP) OPEN-CIRCUIT VOLTAGE (VOC) SHORT-CIRCUIT CURRENT (ISC) MAX SERIES FUSE (OCPD) MAXIMUM POWER (PMAX) MAX VOLTAGE (TYP 600VDC) VOC TEMP COEFF (mV/oC or %/oC ) IF COEFF SUPPLIED, CIRCLE UNITS MODULE MAKE MODULE MODEL PV MODULE RATINGS @ STC (Guide Section 5) MAX DC VOLT RATING MAX POWER @ 40oC NOMINAL AC VOLTAGE MAX AC CURRENT MAX OCPD RATING INVERTER MAKE INVERTER MODEL INVERTER RATINGS (Guide Section 4) 1) IF UTILITY REQUIRES A VISIBLE-BREAK SWITCH, DOES THIS SWITCH MEET THE REQUIREMENT? YES NO N/A 2) IF GENERATION METER REQUIRED, DOES THIS METER SOCKET MEET THE REQUIREMENT? YES NO N/A 3) SIZE PHOTOVOLTAIC POWER SOURCE (DC) CONDUCTORS BASED ON MAX CURRENT ON NEC 690.53 SIGN OR OCPD RATING AT DISCONNECT 4) SIZE INVERTER OUTPUT CIRCUIT (AC) CONDUCTORS ACCORDING TO INVERTER OCPD AMPERE RATING. (See Guide Section 9) 5) TOTAL OF ______ INVERTER OUTPUT CIRCUIT OCPD(s), ONE FOR EACH MICRO- INVERTER CIRCUIT. DOES TOTAL SUPPLY BREAKERS COMPLY WITH 120% BUSBAR EXCEPTION IN 690.64(B)(2)(a)? YES NO NOTES FOR INVERTER CIRCUITS (Guide Section 8 and 9): 1.) LOWEST EXPECT AMBIENT TEMPERATURE BASED ON ASHRAE MINIMUM MEAN EXTREME DRY BULB TEMPERATURE FOR ASHRAE LOCATION MOST SIMILAR TO INSTALLATION LOCATION. LOWEST EXPECTED AMBIENT TEMP ____oC 2.) HIGHEST CONTINUOUS AMBIENT TEMPERATURE BASED ON ASHRAE HIGHEST MONTH 2% DRY BULB TEMPERATURE FOR ASHRAE LOCATION MOST SIMILAR TO INSTALLATION LOCATION. HIGHEST CONTINUOUS TEMPERATURE ____oC 2.) 2009 ASHRAE FUNDAMENTALS 2% DESIGN TEMPERATURES DO NOT EXCEED 47oC IN THE UNITED STATES (PALM SPRINGS, CA IS 44.1 oC). FOR LESS THAN 9 CURRENT-CARRYING CONDUCTORS IN ROOF-MOUNTED SUNLIT CONDUIT AT LEAST 0.5" ABOVE ROOF AND USING THE OUTDOOR DESIGN TEMPERATURE OF 47oC OR LESS (ALL OF UNITED STATES), a) 12 AWG, 90 oC CONDUCTORS ARE GENERALLY ACCEPTABLE FOR MODULES WITH Isc OF 7.68 AMPS OR LESS WHEN PROTECTED BY A 12-AMP OR SMALLER FUSE. b) 10 AWG, 90oC CONDUCTORS ARE GENERALLY ACCEPTABLE FOR MODULES WITH Isc OF 9.6 AMPS OR LESS WHEN PROTECTED BY A 15-AMP OR SMALLER FUSE. NOTES FOR ARRAY CIRCUIT WIRING (Guide Section 6 and 8 and Appendix E): OCPD = OVERCURRENT PROTECTION DEVICE NATIONAL ELECTRICAL CODE ®REFERENCES SHOWN AS (NEC XXX.XX) NOTES FOR ALL DRAWINGS: SIGNSSEE GUIDE SECTION 7 SIGN FOR DC DISCONNECT SIGN FOR INVERTER OCPD AND AC DISCONNECT (IF USED) No sign necessary since 690.51 marking on PV module covers needed information AC OUTPUT CURRENT NOMINAL AC VOLTAGE SOLAR PV SYSTEM AC POINT OF CONNECTION THIS PANEL FED BY MULTIPLE SOURCES (UTILITY AND SOLAR) Notes for Micro-Inverter Electrical Diagram 315 N Lisabeth Common06/12/23 The scope of the plans is for the installation of the solar photovoltaic system only and the approval is subject to compliance with all applicable city and state codes and regulations regarding construction. The approval of the plans does not constitute any certification of the accuracy, completeness, or building permit status of the existing buildings and structures as shown. Bldg# 101115364 Elec# 20179826 Issued 06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 signed: 6/2/2023 315 N Lisabeth Common06/12/23 signed: 6/2/2023 315 N Lisabeth Common06/12/23 315 N Lisabeth Common06/12/23 FLUSH MOUNT CERTIFICATION-1 PD-1.8 CUSTOMER INFORMATION NAME&ADDRESS: 33°44'51.17"N 117°54'38.06"W APN:198-342-14 AHJ:CA-CITY OF SANTA ANA UTILITY:SCE SYSTEM INFORMATION DESIGNER/CHECKED BY: AK/VR PROJECT NUMBER:GOSG-009372 SCALE:AS NOTED PAPER SIZE:17"x11" HA NGUYEN 315 N LISABETH COMMON, SANTA ANA, CA 92703. ENGINEER OF RECORD REV:A DC SYSTEM SIZE: 3600W AC SYSTEM SIZE: 2610W CEC AC SYSTEM SIZE: 3278W MODULES: (9)URECO FBM400MFG-BB INVERTER: (9)ENPHASE IQ7PLUS-72-2-US(240V,1PH) BRANCH DETAILS: 1 BRANCH OF 9 MICRO INVERTERS (9 MODULES) CONTRACTOR INFORMATION 18271 MCDURMOTT W SUITE E, IRVINE, CA 92614. TEL.NO: 949-309-2453 LIC:#B/C10 - 1037212 DATE:4/6/2023 315 N Lisabeth Common06/12/23 FLUSH MOUNT CERTIFICATION-2 PD-1.9 CUSTOMER INFORMATION NAME&ADDRESS: 33°44'51.17"N 117°54'38.06"W APN:198-342-14 AHJ:CA-CITY OF SANTA ANA UTILITY:SCE SYSTEM INFORMATION DESIGNER/CHECKED BY: AK/VR PROJECT NUMBER:GOSG-009372 SCALE:AS NOTED PAPER SIZE:17"x11" HA NGUYEN 315 N LISABETH COMMON, SANTA ANA, CA 92703. ENGINEER OF RECORD REV:A DC SYSTEM SIZE: 3600W AC SYSTEM SIZE: 2610W CEC AC SYSTEM SIZE: 3278W MODULES: (9)URECO FBM400MFG-BB INVERTER: (9)ENPHASE IQ7PLUS-72-2-US(240V,1PH) BRANCH DETAILS: 1 BRANCH OF 9 MICRO INVERTERS (9 MODULES) CONTRACTOR INFORMATION 18271 MCDURMOTT W SUITE E, IRVINE, CA 92614. TEL.NO: 949-309-2453 LIC:#B/C10 - 1037212 DATE:4/6/2023 315 N Lisabeth Common06/12/23 04/06/2023 Design Criteria Code 2022 California Building Code (ASCE 7-16) Risk category II Wind Load (component and Cladding) Roof Dead Load Dr 10 psf V 95 mph PV Dead Load DPV 3 psf Exposure C Roof Live Load Lr 20 psf Ground Snow S 0 psf If you have any questions on the above, please do not hesitate to call. Sincerely, Eugene Munyanziza, P.E. EV Engineering, LLC projects@evengineersnet.com http://www.evengineersnet.com Exp: 06/30/2024 RE: Structural Certification for Installation of Residential Solar HA NGUYEN: 315 N LISABETH COMMON, SANTA ANA, CA 92703 Attn: To Whom It May Concern This Letter is for the existing roof framing which supports the new PV modules as well as the attachment of the PV system to existing roof framing. From the field observation report, the roof is made of Composition shingle roofing over roof plywood supported by 2X6 Rafters at 24 inches. The slope of the roof was approximated to be 30 degrees and the allowable maximum rafter span is 8 feet between supports. After review of the field observation data and based on our structural capacity calculation, the existing roof framing has been determined to be adequate to support the imposed loads without structural upgrades. Contractor shall verify that existing framing is consistent with the described above before install. Should they find any discrepancies, a written approval from SEOR is mandatory before proceeding with install. Capacity calculations were done in accordance with applicable building codes. projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Structural Letter for PV Installation Date: 04/06/2023 Job Address: 315 N LISABETH COMMON SANTA ANA, CA 92703 Job Name: HA NGUYEN Job Number: 230406HN Scope of Work Table of Content Sheet 1 Cover 2 Attachment Uplift checks 3 Roof Framing Check 4 Seismic Check and Scope of work Engineering Calculations Summary Code 2022 California Building Code (ASCE 7-16) Risk category II Roof Dead Load Dr 10 psf PV Dead Load DPV 3 psf Roof Live Load Lr 20 psf Ground Snow S 0 psf Wind Load (component and Cladding) V 95 mph Exposure C References NDS for Wood Construction Sincerely, Eugene Munyanziza, P.E. EV Engineering, LLC projects@evengineersnet.com http://www.evengineersnet.com Exp: 06/30/2024 This Letter is for the existing roof framing which supports the new PV modules as well as the attachment of the PV system to existing roof framing. All PV mounting equipment shall be designed and installed per manufacturer's approved installation specifications. projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Wind Load Cont. 95 mph ASCE 7-16 Figure 26.5-1B C 1.0 ASCE 7-16 Sec 26.8.2 0.85 ASCE 7-16 Table 26.10-1 0.85 ASCE 7-16 Table 26.6-1 1.00 ASCE 7-16 Table 26.9-1 16.64 psf 30.0 Degrees 1.5 Conservatively assuming all exposed 0.8 conservatively assuming 10 ft2 effective area Uplift (W)Zone(1) Zone(2r) Zone(2e)Zone(3) Fig. 30-3-2 GCp=-1.9 -2.2 -1.6 -1.8 Eq. 29.4-7 P=qh(GCp)(γE)(γa)=-37.94 -43.93 -31.95 -35.94 GCp=0.7 Figure 30.3-2 P=qh(GCp)(γE)(γa)=10.48 Equation 29.4-7 Rafter Attachments: 0.6D+0.6W (CD=1.6) Connection Check Attachment max. spacing= 6 ft 5/16" Lag Screw Withdrawal Value= 266 lbs/in Table 12.2A - NDS 2.5 in DFL Assumed Prying Coefficient 1.4 Allowable Capacity= 760 lbs Zone Trib Width Area (ft) Uplift (lbs) Down (lbs) Zone(1) 6 16.5 304.0 222.5 Zone(2r) 6 16.5 348.4 222.5 Zone(2e) 6 16.5 259.5 222.5 Zone(3) 6 16.5 289.1 222.5 Conservative Max= 348.4 < 760 CONNECTION IS OK Risk Category = KZ = Kd = Ke = 2.Embedment is measured from the top of the framing member to the tapered tip of a lag screw. Embedment in sheading or other material does not count. II V= Exposure = 1.Pv seismic dead weight is negligible to result in significant seismic uplift, therefore the wind uplift governs γE= γa= KZt = qh= 0.00256KzKztKdKeV2= Pitch = Lag Screw Penetration projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Vertical Load Resisting System Design Roof Framing Rafters Snow Load Fully Exposed pg= 0 psf Ct = 1.1 Ce = 0.9 Is = 1.0 pf = 0 psf pfmin. = 0.0 psf ps = 0 psf Conservatively (Cs=1) 0 plf Max Length, L = 8.0 ft (Rafter maximum Allowable Horizontal Span) Tributary Width, WT = 24 in Dr = 10 psf 20 plf PvDL = 3 psf 18 plf Load Case: DL+0.75(0.6W+S) 0.75(Pnet+Ps)+ Ppvcos(θ)+PDL= 47 plf Mdown= 379 lb-ft Mallowable = Sx x Fb' (wind)= 975 lb-ft > 379 lb-ft OK Load Case: DL+S Ps+ Ppvcos(θ)+PDL= 38 plf Mdown= 304 lb-ft Mallowable = Sx x Fb' (wind)= 975 lb-ft > 304 lb-ft OK Load Case: DL+0.6W Pnet+ Ppvcos(θ)+PDL= 50.6 plf Max Moment, Mu= 405 lb-ft Mallowable = Sx x Fb' (wind)= 1357 lb-ft > 405 lb-ft OK Pv max Shear= 222.5 lbs Shear, Vu=wL/2+Pv Point Load = 374 lbs Max Shear, Vu=wL/2+Pv Point Load = 374 lb Member Capacity DF-L No.2 2X6 CL CF Ci Cr KF φ λ Fb = 900 psi 1.0 1.3 1.0 1.15 2.54 0.85 0.8 1346 psi Fv = 180 psi N/A N/A 1.0 N/A 2.88 0.75 0.8 180 psi E = 1600000 psi N/A N/A 1.0 N/A N/A N/A N/A 1600000 psi Emin = 580000 psi N/A N/A 1.0 N/A 1.76 0.85 N/A 580000 psi Depth, d = 5.5 in Width, b = 1.5 in Cross-Sectonal Area, A = 8.25 in2 Moment of Inertia, Ixx = 20.7969 in4 Section Modulus, Sxx = 7.5625 in3 Allowable Moment, Mall = Fb'Sxx = 847.9 lb-ft DCR=Mu/Mall = 0.39 < 1 Satisfactory Allowable Shear, Vall = 2/3Fv'A = 990.0 lb DCR=Vu/Vall = 0.38 < 1 Satisfactory Design Value Adjusted Value projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Siesmic Loads Check Roof Dead Load 10 psf % or Roof with Pv 11% Dpv and Racking 3 psf Average Total Dead Load 10.3 psf Increase in Dead Load 1.3%OK The increase in seismic Dead weight as a result of the solar system is less than 10% of the existing structure and therefore no further seismic analysis is required. Limits of Scope of Work and Liability We have based our structural capacity determination on information in pictures and a drawing set titled PV plans -HA NGUYEN. The analysis was according to applicable building codes, professional engineering and design experience, opinions and judgments. The calculations produced for this dwelling's assessment are only for the proposed solar panel installation referenced in the stamped plan set and were made according to generally recognized structural analysis standards and procedures. projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 04/06/2023 Design Criteria Code 2022 California Building Code (ASCE 7-16) Risk category II Wind Load (component and Cladding) Roof Dead Load Dr 10 psf V 95 mph PV Dead Load DPV 3 psf Exposure C Roof Live Load Lr 20 psf Ground Snow S 0 psf If you have any questions on the above, please do not hesitate to call. Sincerely, Eugene Munyanziza, P.E. EV Engineering, LLC projects@evengineersnet.com http://www.evengineersnet.com Exp: 06/30/2024 RE: Structural Certification for Installation of Residential Solar HA NGUYEN: 315 N LISABETH COMMON, SANTA ANA, CA 92703 Attn: To Whom It May Concern This Letter is for the existing roof framing which supports the new PV modules as well as the attachment of the PV system to existing roof framing. From the field observation report, the roof is made of Composition shingle roofing over roof plywood supported by 2X6 Rafters at 24 inches. The slope of the roof was approximated to be 30 degrees and the allowable maximum rafter span is 8 feet between supports. After review of the field observation data and based on our structural capacity calculation, the existing roof framing has been determined to be adequate to support the imposed loads without structural upgrades. Contractor shall verify that existing framing is consistent with the described above before install. Should they find any discrepancies, a written approval from SEOR is mandatory before proceeding with install. Capacity calculations were done in accordance with applicable building codes. projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Structural Letter for PV Installation Date: 04/06/2023 Job Address: 315 N LISABETH COMMON SANTA ANA, CA 92703 Job Name: HA NGUYEN Job Number: 230406HN Scope of Work Table of Content Sheet 1 Cover 2 Attachment Uplift checks 3 Roof Framing Check 4 Seismic Check and Scope of work Engineering Calculations Summary Code 2022 California Building Code (ASCE 7-16) Risk category II Roof Dead Load Dr 10 psf PV Dead Load DPV 3 psf Roof Live Load Lr 20 psf Ground Snow S 0 psf Wind Load (component and Cladding) V 95 mph Exposure C References NDS for Wood Construction Sincerely, Eugene Munyanziza, P.E. EV Engineering, LLC projects@evengineersnet.com http://www.evengineersnet.com Exp: 06/30/2024 This Letter is for the existing roof framing which supports the new PV modules as well as the attachment of the PV system to existing roof framing. All PV mounting equipment shall be designed and installed per manufacturer's approved installation specifications. projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Wind Load Cont. 95 mph ASCE 7-16 Figure 26.5-1B C 1.0 ASCE 7-16 Sec 26.8.2 0.85 ASCE 7-16 Table 26.10-1 0.85 ASCE 7-16 Table 26.6-1 1.00 ASCE 7-16 Table 26.9-1 16.64 psf 30.0 Degrees 1.5 Conservatively assuming all exposed 0.8 conservatively assuming 10 ft2 effective area Uplift (W)Zone(1) Zone(2r) Zone(2e)Zone(3) Fig. 30-3-2 GCp=-1.9 -2.2 -1.6 -1.8 Eq. 29.4-7 P=qh(GCp)(γE)(γa)=-37.94 -43.93 -31.95 -35.94 GCp=0.7 Figure 30.3-2 P=qh(GCp)(γE)(γa)=10.48 Equation 29.4-7 Rafter Attachments: 0.6D+0.6W (CD=1.6) Connection Check Attachment max. spacing= 6 ft 5/16" Lag Screw Withdrawal Value= 266 lbs/in Table 12.2A - NDS 2.5 in DFL Assumed Prying Coefficient 1.4 Allowable Capacity= 760 lbs Zone Trib Width Area (ft) Uplift (lbs) Down (lbs) Zone(1) 6 16.5 304.0 222.5 Zone(2r) 6 16.5 348.4 222.5 Zone(2e) 6 16.5 259.5 222.5 Zone(3) 6 16.5 289.1 222.5 Conservative Max= 348.4 < 760 CONNECTION IS OK Risk Category = KZ = Kd = Ke = 2.Embedment is measured from the top of the framing member to the tapered tip of a lag screw. Embedment in sheading or other material does not count. II V= Exposure = 1.Pv seismic dead weight is negligible to result in significant seismic uplift, therefore the wind uplift governs γE= γa= KZt = qh= 0.00256KzKztKdKeV2= Pitch = Lag Screw Penetration projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Vertical Load Resisting System Design Roof Framing Rafters Snow Load Fully Exposed pg= 0 psf Ct = 1.1 Ce = 0.9 Is = 1.0 pf = 0 psf pfmin. = 0.0 psf ps = 0 psf Conservatively (Cs=1) 0 plf Max Length, L = 8.0 ft (Rafter maximum Allowable Horizontal Span) Tributary Width, WT = 24 in Dr = 10 psf 20 plf PvDL = 3 psf 18 plf Load Case: DL+0.75(0.6W+S) 0.75(Pnet+Ps)+ Ppvcos(θ)+PDL= 47 plf Mdown= 379 lb-ft Mallowable = Sx x Fb' (wind)= 975 lb-ft > 379 lb-ft OK Load Case: DL+S Ps+ Ppvcos(θ)+PDL= 38 plf Mdown= 304 lb-ft Mallowable = Sx x Fb' (wind)= 975 lb-ft > 304 lb-ft OK Load Case: DL+0.6W Pnet+ Ppvcos(θ)+PDL= 50.6 plf Max Moment, Mu= 405 lb-ft Mallowable = Sx x Fb' (wind)= 1357 lb-ft > 405 lb-ft OK Pv max Shear= 222.5 lbs Shear, Vu=wL/2+Pv Point Load = 374 lbs Max Shear, Vu=wL/2+Pv Point Load = 374 lb Member Capacity DF-L No.2 2X6 CL CF Ci Cr KF φ λ Fb = 900 psi 1.0 1.3 1.0 1.15 2.54 0.85 0.8 1346 psi Fv = 180 psi N/A N/A 1.0 N/A 2.88 0.75 0.8 180 psi E = 1600000 psi N/A N/A 1.0 N/A N/A N/A N/A 1600000 psi Emin = 580000 psi N/A N/A 1.0 N/A 1.76 0.85 N/A 580000 psi Depth, d = 5.5 in Width, b = 1.5 in Cross-Sectonal Area, A = 8.25 in2 Moment of Inertia, Ixx = 20.7969 in4 Section Modulus, Sxx = 7.5625 in3 Allowable Moment, Mall = Fb'Sxx = 847.9 lb-ft DCR=Mu/Mall = 0.39 < 1 Satisfactory Allowable Shear, Vall = 2/3Fv'A = 990.0 lb DCR=Vu/Vall = 0.38 < 1 Satisfactory Design Value Adjusted Value projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Siesmic Loads Check Roof Dead Load 10 psf % or Roof with Pv 11% Dpv and Racking 3 psf Average Total Dead Load 10.3 psf Increase in Dead Load 1.3%OK The increase in seismic Dead weight as a result of the solar system is less than 10% of the existing structure and therefore no further seismic analysis is required. Limits of Scope of Work and Liability We have based our structural capacity determination on information in pictures and a drawing set titled PV plans -HA NGUYEN. The analysis was according to applicable building codes, professional engineering and design experience, opinions and judgments. The calculations produced for this dwelling's assessment are only for the proposed solar panel installation referenced in the stamped plan set and were made according to generally recognized structural analysis standards and procedures. projects@evengineersnet.com http://www.evengineersnet.com 315 N Lisabeth Common06/12/23 Rev: 7/15/2021 RESIDENTIAL PHOTOVOLTAIC CHECKLIST SOL-01 CBC 2019 Solar Photovoltaic (PV) Checklist for Detached SINGLE FAMILY RESIDENCES Only Instructions: The licensed contractor of record shall complete all sections, answer the ten questions and sign the certification section below. A copy of this form shall be attached to each of TWO sets of plans, of minimum 11 x 17 size. If answering NO to any of the questions, plan check shall be required. Project Address: Contractor Company Name: Contractor License Number: YES NO Are the following applicable to the proposed project? 1. Will the PV system layout provide the required three-foot wide clear access pathways per Section 605.11 of the California Fire Code, and is this shown on the roof plan? 2. Will the PV system be installed on a roof having only one roofing layer with no overlays? 3. Will the PV array be flush mounted to the existing roof so that the plane of the modules (panels) are parallel to the plane of the roof? 4. Will the PV system weigh maximum 4 pounds per square feet or less? 5. Will the PV system be installed where the modules do not overhang any roof edges (such as eaves, gabled ends, ridges and hips)? 6. Will the PV system be installed with a space of 2 minimum to 10 maximum between the underside of modules and the surface of the roof? 7. Will the PV system be installed without using any ballast system or counter-weight system? 8. Will the anchors be installed with a maximum horizontal anchor spacing of 6 feet and is this maximum horizontal spacing shown on the plans? 9. Will the minimum 5/16 lag screws be installed with a minimum of 2-1/2 inch embedment into roof rafters (with pre-drilled holes) and is this minimum embedment shown on the plans? 10. Are ALL the structural pages of the plans stamped and signed by a California licensed professional engineer? (including project specific site plan, PV layout, anchorage spacing, anchorage details and manufacturers PV support information.) I certify under penalty of perjury under the laws of the State of California that the above is true: Print Name: Signature: Phone Number: Date: Email Address: Planning & Building Agency Building Safety Division 20 Civic Center Plaza P.O. Box 1988 (M-19) Santa Ana, CA 92702 (714) 647-5800 www.santa-ana.org 315 N Lisabeth Common06/12/23