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Report OFFICE COPY z `, F I' lY il?. W CONSULTING Wyssling Consulting �... 76 North Meadowbrook Drive Alpine, UT 84004 Scott E. Wyssling, PE, PP. CME office (201) 874-3483 swyssling@wysslingconsulting.com LIABILITY • The City of Tigard and its September 25,2020 CITY OF TIGARD • employees shall not be REVIEWED FOR CODE COMPLIANCE responsible for discrepancies ,// which may appear herein. Approved: [ Dallas Bradshaw, Senior Account Manager OTC: [ Encor Solar, LLC Permit#: t3 Z ri\ST2.07,0 2$ 3401 N.Thanksgiving Way#450 Lehi, UT 84043 Address: `31(-1t) Lc()Q,,t pry VALIDITY OF PERMIT Suite #: THE ISSUANCE OF A PERMIT _ f / BASED ON CONSTRUCTION Date: �� ?.� ?� Re: Engineering Carri000 DOCUMENTS AND OTHER Reyes Residence ' DATA SHALL NOT PREVENT 13740 Southwest Liden Drive, Tigard, OR THE CODE OFFICIAL FROM 6.000 kW System REQUIRING THE CORRECTION Approved plans Dear Mr. BradshawQF ERRORS.ORSC 105.4 pp shall be on job site. Pursuant to your request, we have reviewed the following information regarding solar panel installation on the roof of the above referenced home: 1. Site VisitNerification Form prepared by an Encor, LLC representative identifying specific site information including size and spacing of rafters for the existing roof structure. 2. Design drawings of the proposed system including a site plan, roof plan and connection details for the solar panels. This information was prepared by Encor, LLC and will be utilized for approval and construction of the proposed system. 3. Photographs of the interior and exterior of the roof system identifying existing structural members and their conditions. Based on the above information we have evaluated the structural capacity of the existing roof system to support the additional loads imposed by the solar panels and have the following comments related to our review and evaluation: Description of Residence: The existing residence is typical wood framing construction with the roof system consisting of truss system with all chords constructed of 2 x 4 dimensional lumber at 24" on center. The attic space is unfinished and photos indicate that there was free access to visually inspect the size and condition of the roof rafters. All wood material utilized for the roof system is assumed to be Doug-Fir#2 or better with standard construction components.The existing roofing material consists of composite asphalt shingles. A. Loading Criteria Used • 110 MPH wind loading based on ASCE 7-10 Exposure Category"B"at slopes of 20 degrees • 7 PSF = Dead Load roofing/framing Live Load=20 PSF Snow Load = 20 PSF • 3 PSF = Dead Load solar panels/mounting hardware Total Dead Load=10 PSF The above values are within acceptable limits of recognized industry standards for similar structures in accordance with the(2019 OSSC). Analysis performed of the existing roof structure utilizing the above loading criteria indicates that the existing rafters when strengthened as calculated, will support the additional panel loading without damage, if installed correctly. Page 2 of 2 B. Solar Panel Anchorage 1. The solar panels shall be mounted in accordance with the most recent"Unirac Installation Manua'', which can be found on the UniRac website (http://unirac.com/). If during solar panel installation, the roof framing members appear unstable or deflect non-uniformly, our office should be notified before proceeding with the installation. 2. Maximum allowable pullout per lag screw is 235 lbs/inch of penetration as identified in the National Design Standards (NDS) of timber construction specifications for Doug-Fir (North Lumber) assumed. Based on our evaluation, the pullout value, utilizing a penetration depth of 2 '/2", is less than what is allowable per connection and therefore is adequate. Based on the variable factors for the existing roof framing and installation tolerances, using a thread depth of 2 '/_" with a minimum size of 5/16" lag screw per attachment point for panel anchor mounts should be adequate with a sufficient factor of safety. 3. Considering the roof slopes, the size, spacing, condition of roof, the panel supports shall be placed no greater than 48"o/c. 4. Panel supports connections shall be staggered where possible to distribute load to adjacent trusses. Based on the above evaluation, it is the opinion of this office that with appropriate panel anchors being utilized the roof system will adequately support the additional loading imposed by the solar panels. This evaluation is in conformance with the 2019 Oregon Structural Specialty Code, current industry and standards, and based on information supplied to us at the time of this report. Should you have any questions regarding the above or if you require further information do not hesitate to contact me. Ve my yours, Q ,00PRo • ,_ Scott E.Wysslin E �5 I NE �p Oregon License o.9 9580 r- t corT E. WYSS\` W CONSULTING N *PV SYSTEM FOLLOWS ROOF TILT ' E N CO R 13740 Sw Lid en Drive TN ai rc 3 16'-9" (E UTILITY METER FRONT OF HOME (EXTERIOR) o z .'- (E)MAIN SERVICE PANEL oi �B (EXTERIOR) ,�, '0 z' 14'-10" i Im_i MIN (N)SOLAREDGE SE8000H-US INVERTER ---— (EXTERIOR) I 111'-0" iI1IIIII�� W EQUIPMENT LEGEND: /.M MP1 5'-8" (N)JUNTION BOX(SOLADEK) o I I UNDER ARRAY UTILITY METER V d AZIMUTH: 180° RW CI MAIN SERVICE PANEL SUNEYE LOCATION VISIBLE LOCKABLE,LABELED 37'-10" O e ."x i J AC DISCONNECT m w2E, 6 0 METERSOCKET .` cr '�Ov )FOR UTILITY P/METER) -'- ~V' N a, INV INVERTER iQni $g%' , I. FQ Oc gH„�3 E COMBINER BOX Lf �Emd" 60' 0' ��Q z c -d LOAD CENTER CD > i d �r 3w %// �F.WY4s� N nVwNgp l,s %N FIRE ACCESS PATHWAY IT TY?) PROPERTY LINE VISIBLE,LOCKABLE, DATE.S.ga.enI 23,mxo LABELED AC DISCONNECT PV02 PROPERTYLAN ®i BATTERY(IES) LO CATED WITHIN 10' 1 ... OF UTILITY METER FRONT OF HOME ENCOR g N Q S ooe o , Z J C 0 g o K J Z oOt U Jm MBP AC INV 0 _ 12"SETBACK AT RIDGE 0 E EQUIPMENT LEGEND: a v 0 ?� UTILITY METER 0 mKi m�> O O LLl MbP MAIN SERVICE PANEL G f pi s s nC VIBIBLE,LOCKABLE.LABELED (N) ER ARRAY BOX `d o ❑ Ac DlscoNNECT UNDER ARRAY y w METER SOCKET 4nrQ= ® (FOR UTILITY PV METERI j�a'^1OZNO El INVERTERrliN(.' ON3 Dora. COMBINER BO% MP1 d /Km11 g i w PITCH:28* U fe`.- AZIMUTH:180° 'I IV N!ti s,EL< LOAD CENTER ��� VISIBLE,LOCKABLE, O BATE SeMemberU.]030 VA FIRE ACCESS PATHWAY(5'TYE) LABELED AC / CO�E SN>swap.. DISCONNECT PERT ROOF PLAN E BATTERY(IES) LOCATED WITHIN 10' ", I OF UTILITY METER N 0 III ENCOR ! p N o - 4 0 3 JB Z J SL. Tr S A s 0 U 84 pz5 w3 a 0 Q 8F, f WEE VVV 6/ �. a r3~d /- � cp �?1 �a� op' --- �E.WVsg'- F 8Oua a,3 .•y z„a c EQUIPMENT INFORMATION:cf ROOF INFO: PHOTOVOLTAIC ARRAY STRUCTURAL CRITERIA: OLL¢N RAIL MANUFACTURER O H o r'� Unirac ROOF TYPE asphalt shingle ROOF ATTACHMENT COU NT: 42 ?'Yo�+r .; RAIL PART NUMBER SM 'ROOF FRAMING manufaRRrea_HRu PV MODULE COUNT: 21 w Bcx„. ..A Ni7S7fo T ATTACHMENTS Unirac-FLLSHRR PRO RAFTER/TOP CHORD SIZE 234 ARRAY AREA: MODULE COUNT•16.06ft'=379.26 _• ROOF AREA: 1988M OL" ATTACHMENT qTY 42 RAFTER/TOP CHORD SPACING DATE:SepE.mN,29..2020 24 PERCEAT OF WEIGHTF COVERED: 19% COUNT MIDCIAMP OP! 36 ATTACHMENT SPACING 48 ARRAY WEIGHT. MODULE[OUNT•901hs.1090 rwe. mx„aws ENDCIAMP OTT -._ ..- - - PVOd .o..�. 12 DISTRIBUTED LOAD: ARRAY IBS/ATTACHMENTS=25 mars m y "' SPLICE OTY -.... . -_ 6 POINT LOAD:Ilbs/R') (ARRAY)WEIG HT/AREA 2.77 Ibs/ft' 1 PV MODULE END CLAMP MID CLAMP 1 2 RAIL - .� PV ENCOR PV NOVAE '� i ti •• RAIL ROIL MAX. PRE-MANUFACTURED O '�' TRUSSES 024"O.C. FRONT VIEW f / 1= � ES= O END CLAMP DETAILS O MID CLAMP DETAILS (N .A Z J> O gf'" - „ L e , U oI—..i RAIL 10"MIN- mH4IWIIAIIIIIA --------z___—___ 7 MAX L-ROOT/ATTACHMENT BRACKET 10"MIN- 41 3'-10"MAX ��` MAX c (E)COMP SHINGLE ROOF(1 LAYER) / F i.-_ PRE-MANUFACTURED a i :� FLASHING TRUSSES A24'URE 3,10 MIN Y 0'-10"MAX 6/16"STAINLESS STEEL LAG-BOLT N tp a WITH 2-1/2"MIN.EMBEDMENT m��S AND RAT WASHER 3 Of Oj �b'..o$ (E)ROOF FRAMING z d O DETAIL,MOUNTING AND FLASHING SIDE VIEW an^•ai 3 oHa- j8zN.,"•W EQUIPMENT INFORMATION: ROOF INFO: yy PHOTOVOLTAIC ARRAY STRUCTURAL CRITERIA, O s„3 z I=cf 24' RAIL MANUFACTURER Unirac ROOF TYPE asphalt shingle ROOF ATTACHMENT COUNT: 42 01 8L~C��• 3 RAIL PART NUMBER SM ROOF FRAMING manufactureC buss PV MODULE COUNT: 21 a�n'�0.%z— ARRAY AREAS MODULE COUNT'18,06N'=3]9.26 ,�-�:3:2.E�"_ ATTACHMENTS Unirac-FASHRN PRO RAFTER/TOP CHORD SIZE Id ROOF AREA: 1988 fl' -- ATTACHMENT OTY 42 RAFTER/TOP CHORD SPACING 24 PERCENT OF ROOF COVERED: 19% DATE.s•q•mlm 23.2034 MIDCLAMP QTY 36 ATTACHMENT SPACING 48 ARRAY WEIGHT: MODULE COUNT•501bs=10S0 °•°` ""`"'"` ENDCLAMP CITY 12 DISTRIBUTED LOAD: ARRAY IHS/ATTACHMENTS=25 _ PV05 e• POINT LOAD:(lbs/fls) (ARRAY)WEIGHT/AREA=237 Ibs/U• '""" I "e ..• SPUCE QTY 6 - • • ABELI CT AT EACH JUNCTION BOX,COMBINER BOX.DISCONNECT. AND DEVICE WHERE ENERGIZED UNGROUNDED CONDUCTORS MAY BE EXPOSED DURING SERVICE. MVERTER OUTPIIECOMIECTKNI ABELT ELECTRIC SHOCK HAZARD NEC.RHO.ffi(F) PLACED ADJACENT TO THE BACWFED BREAKER FROM THE INVERTER IF TIE IN _ DO NOT RELOCATE CONSISTS OF LOAD SIDE CONNECTION TO 6uSBAR. ENCOR THE DC CONDUCTORS OF THIS OERCURRENT D NEC 7 .12(SRXIIKB) THIS PHOTOVOLTAIC SYSTEM DEVICE 5 ARE UNGROUNDED AND MAYBE ENERGIZED O LABELS 4SIGN LOCATED AT UTILITY SERVICE EQUIPMENT. LABEL] NEC ERO S8(C) 2 N FORPVDISCONNELTINGME4NS WHERE ALLTERMIHALS III IY3 ELECTRIC SHOCK HAZNA OF THE DISCONEELTNG MEANS MAY BE ENERGIZED IN U THE OPEN POSITION. U. -J TFHMINMSONTHELME AHD NEC BBO.IT(E),NECTD522 -I W LOM SI]ESMAYEEEHERGVED AL .. IN THE OPEN POSITION LABEL O(ONLY IF O OR MORE SUPPLY SOURCES TO A BUSBARI mg THIS EOJIPIENT FED EY MULTINE SIGN LOCATED AT LOAD CENTER IF CONTAINS 3 OR MORE POWER SOURCES. U N 4 3 SOURCES.TOTAL RATIN%OFALL NEC TOB.IVD)()I31IC) PHOTOVOLTAIC SYSTEM r Q.EMAIN RENT SUPPLY 0ACE6,ENCLIA)IND LABELS 0 A7 >_ A AC DISCONNECT it DISCOINNEC INTERCONNECTION,LTION,MARKED AT AC DEIJSR DHALNOT EPRENT MCEED OZ Z a DISCONNECTING MEAN(. DEICE SHALL NOT EXCEED U W ID� MlfOAC WiPJTCUSEIIi O A NEC BS059.NEC B50.13(B) ALIFATITY OP BUSBAR NAM.OHAMLVOACWLRLE wA V SOUR PV SYSTEM EQDIPPFD LABEL 10 --- LABELS FOR PV SYSTEMS THAT SHUT DOWNTHE ARRAY AND CONDUCTORS LEAVING AT POINT OF INTERCONNECTION FOR EQUIPMENT WITHSHUTDON RAPID SHUTDOWN ARRAY. LONTAININOOVERCURRENT DEDUCES IN CIRCLES MIwB SIGN TO BE LOCATED ON OR NO MORE TRANS FT AWAY FROM SERVICE DUAL POWER SUPPLY SUPPLYING POWER TO ABUSMR OR CONDUCTOR ANIOIZ[TSAz RB DISCONNECTING MEANS TO WHICH THE PV SYSTEMS ARE CONNECTED ARE SUPPLIED FORM MULTIPLE SOURCES,EACH is 01Ti mIX 0 SHALL INDICATE THE LOCATION OF ALL IDENTIFIED RAPID SHUTDOWN MN[Om P•MMEM SOURCES:UTILITY GRID AND SERVICE EQUIPMENT AND ALL ELECTRIC POWER AMMO= SWITCHES IF NOT AT THE SAME LOCATIONIII . PV SOLAR ELECTRIC SYSTEM PRODUCTION SOURCE LOCATIONS. BYYl11 (NEC W359(CX'IXA)) NECT15.12(DII3) -- o SOLAR PS SYSTEM E0.IPPED LABEL I, a ATBOIRECOVERSENT EXPOSED RACEWAYS.CABLE WITH RAPIDSHliTCO'NN FOR PV SYSTEMS THAT ONLY SHUT SIGN TO BE LOCATED ON OR NO MORE 3NDUCTORS LUNING,THE FFT AWAY FROM SERVICE NA'ARNING. PHOTOVOLTAIC TRAYS,COVERS AND ENCLOSURES OF JUNCTION fiWAMRPUTI%.MA'SRYS' DISCONNECTING MEANS TO WHICH THE PV SYSTEMS ARE CONNECTED AND M POWER SOURCE BOXES,AND OTHER WIRING METHODS,SPACED AT TIME'XP C4 A. SHALL INDICATE THE LOCATION OF ALL IDENTIFIED RAPID SHUTDOWN ,T mw MAXIMUM 10FT SECTION OR WHERE SEPARATED BY p WIAENIPNI 4 L. SWITCHES IF NOT AT THE SAME LOCATION. n b w¢ -'— ----- ENCLOSURES,WALLS,PARTITIONS,CEILINGS,OR TOBISRIA u [NEC 5S0.56)CNIXB(( ST IX x LABEL VALUES: FLOORS. SA AIYgoxsxrYT p fb'ry 0 g .DESCRIPTION yAW E; NEC 5SOJ1(0)(38A) - — - .o 5 DC IMP: B.6 MAIN SERVICE PANEL LABELING DIAGRAM: lel SUB PANE. -w- DC VMP: 33.32 PR CORONER (OILY IF POINT OF 0a 0 W a x INTERCLNNECTION Z _ en A CCVOC: 6D56 IF USED TO COMBINE IS MACEVAMIN I❑ F 2..p 77,1 DC!SC: SEE DATASHEET w NTP Nt'IRCUITS AC DISCONNECT SUB PALES) O O Co 0,i i N a I'W DC SYSTEM SIZEIW), 6720 I JUNCTION BOX 0 2❑ 0 02 O O d i p w o i m AC OPERATING CURRENT: SEE DATASHEET 0 _________ W __ 0 ___ ._. O DR CI El Co a I J.` '�AC VOLTAGE: 260 © O S ,` N ti200 LABELING NOTES. _ Q 0 I.. LABELS CALLED OUT ACCORDING TO ALL COMMON CONFIGURATIONS.ELECTRICIAN TO DETERMINE EXACT -- REQUIREMENTS IN THE FIELD PER CURRENT NEC AND LOCAL CODES AND MAKE APPROPRIATE ADJUSTMENTS. BATE:Sa aMwa 232020 2. LABELING REQUIREMENTS BASED ON THE 2017 NATIONAL ELECTRIC CODE,OSHA STANDARD 19010145,ANSI Z538. sixwEMEK ncewsvaw S. MATERIAL BASED ON THE REQUIREMENTS OF THE AUTHORITY RAVING JURISDICTION. FVOT LABELS 4. LABELS TO BE OF SUFFICIENT DURABILITY TO WITHSTAND THE ENVIRONMENT INVOLVED[NEC 110211 ^ ELECTRICAL AMORAL,SHOWN ABOVE IS FORM IO LABELING PURPOSES ONLY.NOT AN ACTUALREESENSTN 5. LABELS TO BE A MINIMUM LETTER HEIGHT OF DAM,VMITE ON RED BACKGROUND:REFLECTIVE,AND PERMANENTLY OF EQUIPMENT ANO DONNECIICNS TO BE INSTALLED.LABEL LOCATIONS PRESENTED MAY VERYDEPENWNG ya.AO I AFFIXED IIFC&D5.1111] ON TYPE OF INTERCOMECTION METHOD AND LOCATION PRESENTED ELECTRICAL DIAGRAM PAGE. ENCOR CAUTION POWER TO THIS BUILDING IS ALSO SUPPLIED FROM ROOF MOUNTED SOLAR ARRAYS V TH SAFETY DISCONNECTS AS SHOWN: FRONT OF HOME 10 1 � 3 I 2 Uc Z - rc dm o g g MAIN DISTRIBUTION Z z m UTILITY DISCONNECT F O AC DISCONNECT INVERTER Si RAPID SHUTDOWN DC 111111.1113. IIUuu;. DISCONNECT SWTCH PV ARRAY ME= < 0 13740 Sw Liden Drive,Tigard OR 97223 og DIRECTORY o N o PERMANENT PLAQUE OR DIRECTORY PROVIDING THE LOCATION OF THE Ef E 'a SERVICE DISCONNECTING MEANS AND THE PHOTOVOLTAIC SYSTEM. 3 x^ (ALL PLAQUES ANDSIGNAGE WILL BE INSTALLED AS OUTLINED WITHIN: NEC 690.56O& 705.10 ow � I1C,[NEC[ ]) Q c_ZinpV ¢Zf andb DATE:SepOmC,20.2020 PVOS PLACARD a o 28357 Industrial Blvd. Hayward, CA 94545 I I RON RI DG E 1-800-227-9523 ronRidge.com Attn: Corey Geiger, COO, IronRidge Inc. Date: July 1r, 2020 Re: Structural Certification and Span Tables for IronRidge Flush Mount System This letter addresses the structural performance and code compliance of IronRidge's Flush Mount System. The contents of the letter shall be read in its entirety before being applied to any project design. The Flush Mount System is a proprietary rooftop mounting system used to support photovoltaic(PV) modules installed in portrait or landscape orientation and set parallel to the underlying roof surface. PV modules are supported by extruded aluminum XR Rails and secured to the rails with IronRidge mounting clamps. The XR Rails are side mounted to a selected roof attachment with 3/8" stainless steel bonding hardware and then attached directly to the roof structure or to a stanchion that is fastened to the underlying roof structure. Assembly details of a typical Flush Mount installation and its core components are shown in Exhibit EX-0015. The IronRidge Flush Mount System is designed and certified to the structural requirements of the reference standards listed below, for the load conditions and configurations tabulated in the attached span tables. • ASCE/SEI 7-10 Minimum Design Loads for Buildings and Other Structures(ASCE 7-10) • 2015 International Building Code (IBC-2015) • 2014 Oregon Structural Specialty Code • 2015 Aluminum Design Manual (ADM-2015) The tables included in this letter provide the maximum allowable spans of XR Rails in the Flush Mount System for the respective loads and configurations listed, covering wind exposure categories B, C, & D, roof zones 1, 2 &3, and roof slopes from 8°to 45°. The span tables are applicable provided that the following conditions are met: 1. Span is the distance between two adjacent roof attachment points (measured at the center of the attachment fastener) 2. The underlying roof pitch, measured between roof surface and horizontal plane, is 45°or less. 3. The mean roof height, defined as the average of the roof eave height and the roof ridge height measured from grade, does not exceed 30 feet. 4. Module length shall not exceed the listed maximum dimension provided for the respective span table and module width shall not exceed 42". 5. All Flush Mount components shall be installed in a professional workmanlike manner per IronRidge's Flush Mount installation manual and other applicable standards for general roof construction practice. ©2020 IronRidge,Inc. OR Flush Mount System Certification Letter-1 28357 Industrial Blvd. Hayward, CA 94545 ZIA I R Q N R I D G E 1-800-227-9523 • IronRidge.com The parameters and adjustments allowed in the span tables are defined as the following: 1. The Flush Mount System is designed as a Risk Category II structure as defined by ASCE 7-10 Chart 1.5-1. 2. The wind speed selection shall conform to ASCE 7-10 Fig. 26.5-1A(Risk Category II wind)and any state&local county/city amendments to the IBC. No special wind topographic features are included in the span tables and the topographic coefficient(Kzt) is taken as 1.0. 3. The snow load used in the span tables is the ground snow and shall conform to ASCE 7-10 Fig. 7-1 and applicable state& local county/city amendments to the IBC. If the local jurisdiction specified snow load is in the format of a flat roof snow load, it shall first be converted to a ground snow following the local building code/amendment before the application of the attached span tables. No special snow conditions are considered including unbalanced, drifting, sliding, retention, or ponding snow. The span tables do not include buildings which are intentionally kept below freezing, kept just above freezing, or unheated. 4. The span tables reflect the ASCE 7 prescribed earthquake loads with the maximum magnitudes being: 1) For ground snow no greater than 42psf: Ss<_2.0g for Site Class A, B, C, or D. 2) For ground snow greater than 65psf: Ss 5 1.0g for Site Class A, B, C, or D. 3) For ground snow between 42 and 65psf: Ss<_ 1.5g for Site Class A, B, C, or D. 5. Roof zone size and definition conforms to ASCE 7-10 Fig. 30.4-2A to 30.4-2C. 6. Allowable span length in the charts may be multiplied by a factor of 1.08 if the rails are continuous over a minimum of three spans. 7. The maximum cantilever length measured from the rail end to the nearest attachment point shall not exceed 40% of the allowable span provided for the respective load&configuration condition from the span tables. 8. An array to roof clearance of 2" minimum must be provided. 9. No rail splices are allowed in the cantilever, outer 2/3 of end spans, or middle 1/3 of interior spans. 10. Shaded cells of the span tables indicate conditions in which UFO Mid Clamp connection capacity is exceeded. If such conditions are encountered contact support ar7ironridge.com. 11. When a roof attachment listed in IronRidge's Flush Mount installation manual is considered, the span values provided in this letter can be adjusted using IronRidge's online Design Assistant by checking the capacity of the selected roof attachment against the reaction forces provided in Design Assistant. ©2020 IronRidge,Inc. OR Flush Mount System Certification Letter-2 28357 Industrial Blvd. Hayward, CA 94545 I R Q N R I DG E 1-800-227-9523 IronRidge.com • The span tables provided in this letter are certified based on the structural performance of IronRidge XR Rails only with no consideration of the structural adequacy of the chosen roof attachments. PV modules, or the underlying roof supporting members. It is the responsibility of the installer or system designer to verify the structural capacity and adequacy of the aforementioned system components in regards to the applied or resultant loads of any chosen array configuration. _aggi PR Open Sincerely, y O1NEF iqP Date: ¢ 91200PE r 077...c2O2aO7. 17 wGOri12o-c) 14:02:31 Gang Xuan, PE WIRES: 0600/2022 _0 7 t O O t Senior Structural Engineer ©2020 IronRidge, Inc. OR Flush Mount System Certification Letter-4 m m m m m m n m P a r m e e .1 n $ S R 212 Aim I c 212 112 2 m 912 e m 2 m r m 2 222 a. P m m W W o . a:2 m 222, m w w m a a n e $ $ u , . 272222 , 2 .. Im mm mmm m a 2 m as P82 ::2 . m211912 a 22222 m m m m 2 m P a 3 112 h12 $gym m m 2 I M P a 2 2 12 $ e _ . 7 3, „ m ..9I: e m r m n m r w P $ n n $ 2' a2 2, $ ' 5 11M 2 S& $ m o o mm m mmm � m m P a m m , ; m m 2112 N 119 � nrnrsa2a2PPe2G $ 112212212 E S m m m m m n n w n m u 22 ^ ^ rs m m m n n o 2 m a :. a 2 2 e 8 8.8 g m m m m 2 n r n $ m• m .. .. 0 t 771 3 11 12122 m m m S a a 2 212 . 4. E P., FART zgm m m m P a m 7 $ m _2 _ .. .. mmm 8 $ n a' $ 23 $ e _ .1 m m mmm ._ au $ $ n 177, E .. .. .. T V. m m m m P a 2 r $ m d m m m m w r r n a $ $ e - 72 2 ^ m m m m m r r m r S m .. m - m r m m ry m m m o m m m m o ,^ s ^ .. ^ m . _ r � a 3 m m P a m r 72 m _ g i .. "v "v ry m n n „� ry _ mam w mom-mx� mn9 mQm 1. ea r m e a n g S R 8 w • Rai(: Flush Mount System Span Table(inches) Portrait or Landscape Installation(Maximum Module Length 61.5') XR100 Exposure C Ground Roof wind Speed:110 mph 115 mph 120mph 130 mph 140 mph 150 mph 160 mph 130 mph 180 mph 1 n03 I d 2urrel Zer.e2i 2+re3 nel Zone Zone Zorel Zoe Zone ----- Zone Icnel Zone 7one3 Zone 20 re2 3one3 2une3 Zune2 Ecne3 Zorzt Zone Zone Zone_ Zcre2 Zonc3 0 8 2] 121 99 8n 121 96 76 122 90 73 113 83 n68 106 78 99 72 53 68 87 84 52 03 49 pd 20-95 114 611 111 111 107 107 107 103 103 101 96 96 96 89 89 90 84 84 56 79 79 0/. 74 74 77 72 72 10 psf 6.2/ 112 99 80 112 96 76 112 90 73 111 83 68 106 78 99 72 93 63 87 64 53 83 49 28-45 105 106 106 103 103 103 :01 101 ICI 9) 96 96 96 89 89 90 84 84 86 75 79 81 74 74 77 72 72 20 psf 0 27 96 96 80 96 96 76 96 90 73 93 83 68 91 78 89 72 07 60 .. 85 64 52 83 49 20-95 92 92 92 90 9C 9J 89 89 89 86 86 86 83 83 83 81 81 81 78 78 78 76 74 74 23 72 72 30 ps( 8 27 92 92 80 92 92 06 92 90 73 91 83 68 90 78 68 7286 68 84 64 52 82 49 28 45 90 90 90 89 89 89 88 88 88 85 85 85 82 82 82 BJ 80 851 77 27 77 75 74 2.1 23 72 72 40 pa ' 827 03 89 80 83 83 25 83 83 73 83 83 66 82 7e -r 80 72 5: 79 68 78 64 52 75 49 2845 84 84 84 83 03 83 82 02 82 79 79 79 77 77 27 25 75 75 73 23 23 72 72 72 69 69 69 so psf 8 22 75 - 75 75 75 75 75 75 75 73 75 75 68 75 75 25 72 74 68 72 64 52 72 49 28445 78 28 78 77 77 27 75 76 76 75 i5 75 73 73 73 72 72 73 fig 69 59 68 68 68 66 65 66 60 pif 82] 69 - 69 69 69 69 69 69 69 69 69 69 68 69 69 69 69 59 69 58 -- 68 64 52 5Z r 49 30.45 ]3 ]3 ]3 ]3 ]3 ]3 ]2 ]2 ]2 )2 22 R 69 69 69 68 68 (0 66 66 56 65 65 65 o- 7 0 Psf 8-3] 64 64 64 64 64 64 64 64 64 64 04 64 64 64 61 6c . 64 6A - 64 64 52 -: 49 38i5 10 59 69 69 69 69 69 69 69 fit 62 6] 66 F6 66 65 65 C. r,r 80 pa 49 28-05 65 55 65 65 65 65 65 65 65 64 64 64 r. 63 // 0.2] 5] 5] 5) c] 5] 5> 52 49 9U psf 28-05 -.51 61 61 6t r.t 6t 61 -_61 100 psf 8-2I 54 :J Si 59 54 59 -r 4,: c9_ 54 '.: 52 49 28-05 58 - � 58 58 58 5s Sa 50 58 58 . 110 psi e 2] s2 5: 5: s2 51 5? 52 52 `2 c, 52 52 52 F_ 52 29 45 56 I 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 4o 120 psf 8-27 50 I 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 l 50 50 50 't 49 20.45 63 53 53 53 53 53 53 53 53 53 53 53 53 59 59 53 fi 58 533 =Note'.oddltlonallnstallation requirementon UFO middle alamps.Please refer to Note 10 on Pape 2 for details. _min72"span =nrin 64"5aan =min 48"span 4e505/21/3020 Rail: Flush Mount System Span Table(inches) XR100 Portrait or Landscape Installation(Maximum Module Length 67.5') Exposure I) Ground Roof Wind Speed:110 mph 115 mph 120 mph 130 mph 140 mph 150 mph 160 mph 170 mph 180 mph Snow Ze 1dK Znnr.t I Zone 2 Zone Zone I Zone I Zone Zo9e1 Zone 2 Zone Zone 1 Zone 2 I Zone 3 Zone]I Zone I Zone3 Zone Zone I tore3 Zone I Zone 2 I 2c9e3 Zo net 24444e2 I Zune3 2c34e1 Zo-,e2 Zone 0 por 8-27 122 92 74 118 96 72 113 84 68 105 77 3 98 72 '. 91 62 54 06 51 al 48 76 45 28-45 105 104 104 104 100 100 101 96 96 96 89 09 89 83 83 84 78 78 80 7? 73 75 69 69 72 64. 3 27 112 92 74 112 BB 72 111 84 63 105 77 98 72 .' 91 67 54 86 51 81 4 48 76 45 10 psf 2645 102 102 102 99 99 99 97 96 95 93 89 89 80 83 83 84 78 78 00 73 73 75 69 69 72 65 65 20 psf 8 27 96 92 74 96 BB 72 93 84 58 91 77 89 72 8) 67 54 85 51 81 48 76 45 26-05 69 89 69 87 87 87 86 86 85 83 83 83 83 80 80 77 .. 77 75 73 73 72 69 63 72 65 35 30 psf 037 92 92 74 92 BB 72 92 04 68 90 77 BB 72 : 86 67 54 ea 51 81 4 48 76 45 28-45 BB 88 88 87 67 87 OS 85 65 82 02 82 79 79 79 77 77 77 71 73 73 72 69 63 69 65 40 psf B 27 83 83 74 83 83 72 83 83 68 92 77 88 72 :4 79 67 54 77 : 51 76 ' 48 74 45 2845 82 82 02 80 69 80 79 79 79 77 77 77 75 75 75 72 72 72 72 72 72 68 68 68 66 .._ 50 psf 8-27 75 75 74 75 75 72 75 75 68 75 75 75 72 73 67 54 72 51 72 " 48 72 45 20 45 77 77 77 76 76 76 75 75 75 73 73 73 72 72 72 69 69 69 67 63 67 65 ES 65 60 psf 827 69 69 69 69 69 69 69 69 66 69 69 5. 69 69 69 67 54 63 51 67 .: 48 66 45 28-45 72 72 72 72 72 72 72 72 72 69 69 69 67 67 67 66 66 66 64 64 64 8-27 64 64 64 64 64 64 64 64 64 64 64 60 64 64 64 54 04 51 64 48 43 7O psf 28 45 63 69 C9 58 68 68 67 67 67 66 66 66 64 64 64 ' 51 45 45 80 Pi 28-45 65 65 65 55 65 65 64 61 64 e. 82 e 4 90 psf 8-27 - S 57 57 57 57 54 51 48 45 2845 m s. s6 ss 100 psf 8-27 54 '.. 54 54 SV 51 48 4: 28-45 58 1 58 - 58 - 110 Pif 8-27 52 52 45 52 52 51 46 45 28-45 56 : 56 -,. :. 56 56 56 120 Psf 8-27 50 i 50 552 50 50 50 50 50 50 48 45 28?5 53 53 .9 51 __ > Li 53 l 53 53 I a _. =seen'.additional installation requirement on UFO middle clamps.Please refer to Note 10 on Page 2 for details. -min 72'4649 =min 64'saan =min 40'span REV 05021/2020 $ a. „ a. aa „ gaasaa „ „ „ . „ 4,2111 Mk E 4 n w n „ n „ n w W w w w Eltt .. „ 2 4',2 -6 2 w r gr m m 2 a J s 2 „� 2 212 B'n 4:2 m - ti n s n n . „ a 22 a!„ e mmmPrnnnn „ sa i 0 n m m 2 $ ,m, m n n r n 2$ $ 2 e 2. „fa w a 8 E o2 222 „ m ry 2 a a mn a 4[2 e'R w msn°' nnn 21e .. _ .- 4 e a 2 „ 2 „ 2 m n m 2 n „ n a 2 2 „ 2.2 „ „ 2P2P2P22P1 n n $ „ 2 „ „ - v 1 - 2 P w w w 2 2 n 2 n a 8 2 _ .c „ „ 2n4 avpi n r E s a s m w 2 w m $ ,2 n p $ 2 N _ r v E m2 2 2 m m m n n n n s w . $ ., X 2 m m m w n n n n a m e - ° 2 m m m m n n n n „ .o „ „ 4 a s 2222 m m r r n r a 2 . 8 4 „ „ m w m n n n n ., 2 2.2�ia 412 S r n .. 2 m m w r n n n $ „ g E , F m m w n r r 7 $ 2 $ v..R 9 $ _ a R a w a w r w n n a m 2 P 11 412 �, t o $ E ry '4 3 2 m m m F & 'n ^n $ s a 9 M E o : S o r m w n m .. ry E24222222PPP2aa _ t 4. a s;I,^„WiS s2 m 2 2n w n r a w w a 4i2 ry .. m m m r m r A, a 2 „ 7 8.2 a S : G r3 ry ry n 9 r ry ,r. ry ry ^ n ry ry ry F,.4 a m 2 n 2 w X i3 I I s I . 1 1 k a 8 k k g 2 2 2 2 2 2 .. .. ,. Rail: Flush Mount System Span Table(inches) RR100 Portrait or Landscape Installation(Maximum Module Length 78.5') Exposure C Ground 6.0 Wind Speed:110 mph 115 Zone l 1 mph 120 mph 130 mph 140 nph 150 mph 160 mph 170 mph 180 mph S ldsga.l no✓ pe [Zone 2 I Zane 3 Zane Zone e l Zone, Zone 1l Zone 2 one! ',re l Zone n Zone l Zone2 Zone Zone 11 Zone 2 l Zane 3 Zone 1!Zone 2 l Zane 3 Zone ll Zone 2l Zone 3 Zone_I Lene2 2one3 lll«l z O PBf 8-27 118 92 74 118 88 72 114 84 60 105 78 90 ZS Z 92 67 0 86 51 81 " 48 JZ 5': 46 28-45 106 103 103 103 99 99 100 96 55 96 89 89 89 83 83 84 78 L 78 79 73 : 73 75 69 69 72 65 65 10 PSf 827 ]fA 92 ]4 104 08 J2 .04 84 60 105 78 oe 72 S3 92 6I 86 51 8' 48 ZJ : 46 28-05 98 90 98 96 a6 96 96 96 a6 9J 69 89 8] 83 83 83 Je 28 ]9 ]3 J3 J5 60 69 ]2 65 65 20 PSf 8.27 87 6) 74 87 87 72 87 84 68 86 78 84 72 83 67 81 51 79 48 77 -r 44 20-45 85 85 85 84 34 64 82 82 82 SO 80 80 77 77 77 75 75 75 72 72 72 72 69 69 68 65 65 30 of 8.27 BE 86 74 86 86 72 86 84 68 85 78 -. 83 72 '.i 81 67 80 51 78 48 76 :6 46 28 4' 84 84 84 83 83 63 81 81 81 79 79 79 77 72 l 77 71 74 : 74 72 72 72 72 69 69 67 65 65 • P6f 8.27 Jl JJ 74 77 77 72 77 71 68 77 ZJ 76 72 n. 75 67 73 51 72 48 72 46 Y 28-45 78 78 78 77 72 77 76 76 76 24 74 74 72 72 72 72 72 72 68 68 66 66 66 66 64 64 64 f 8 27 72 72 72 72 72 72 72 72 68 72 72 72 72 69 67 68 51 67 - 48 66 46 • Ps 2845 73 73 73 72 72 72 72 72 72 69 69 69 68 68 68 66 56 66 64 64 : 64 61 4 Psf 64 64 64 64 68 64 6464 64 66 64 64 64 64 Y ,.. 64 .. 51 46 46 I 16-48-05 6E 66 68 68 66 68 67 67 67 66 66 66 64 (a 64 .. c. nl )0 psf• 6-2] .. n 60 51 60 51 18 46 20-05 64 02 64 64 64 64 64 64 61 .6 55 60 l 60 59 Psfa 8.2] L se se 51 48 46 28-45 58 I 58 56 ' 55 90 9N 8-27 '.a 53 '• .'.. 53. 53 53 1 53 I: 51 48 46 p g 2) 50 50 50 I- 50 46 46 100 pg. i ,4 a. 5r 7 53 53 53 I.. 110 ps(• 6 27 't 3 4[ 4:5 16 46 46. 4E elS 4. 4e 48 4n ') 48 46 46 8 27 46 46 46 46 46 46 46 46 45 46 46 46 46 46 46 46 46 46 4C e.. 46 46 4C 45 46 46 46 120 pat' =Note'.addlbnnl installation roao•ment on Jfo middle clamp vied,refer to vote 10 an Cage 2 for detzls. •=Note'.additional installation repurement for CAMP module clamp.See Note 12 on Page 3 for delana. is min R'span =min 64'span =min 48'span 6-2 05/21,/1026 • • Rail: Flush Mount System Span Table)Inches) portrait or Landscape Installation(Maximum Module Length 78.5") XR100 Exposure D Ground Roof Wind Speed:110 mph 115 mph 120 mph 130 mph 140 mph 150 mph 16D mph 170 mph 100 mph Sams Slope Sams (depFt Zor'e 1 Zone21 Zone Zone II Zone2 Zone 3 Zone1 Zone 2 Zone3 2ane1l Lone 2 Zone Zone l II_0ne 2 l Zone 3 Z0ne1 70003 I/noel /nn r'11 Zoe2 Zone3 Zone 1[Zone 2 2cne3 Zone Si Zone 21 Zone3 0066 2-27 114 85 64 110 82 66 105 78 97 72 91 67 54 85 .. 50 80 . 48 75 44 72 52 42 28-45 100 96 96 97 92 92 96 89 89 88 83 83 83 77 77 78 72 72 74 68 68 72 64 64 66 ,. 10 psf 8-27 104 85 69 104 82 66 103 78 '. 97 72 31 67 54 85 50 80 40 75 44 72 52 42 211-05 96 96 96 92 92 92 90 89 89 86 83 83 E3 77 77 78 72 72 74 60 68 72 64 64 66 30 pst 8-27 87 85 E9 87 82 66 66 78 84 72 83 67 54 81 SO 79 48 75 -- 44 72 52 42 28-45 83 83 83 Cl 31 81 80 80 BO 77 77 77 74 74 74 72 72 72 69 68 68 67 64 64 65 30 03f 8.27 86 85 69 86 62 66 85 78 63 72 .. 81 67 54 80 SO 7B ' 48 75 4a 72 52 42 28-45 82 82 82 80 83 80 79 79 79 76 76 76 74 74 74 72 72 72 69 68 69 66 64 64 64 r. 40 psf 8-27 77 77 69 77 77 66 77 77 :: 76 72 -3 75 67 54 73 50 72 ' --- 72 44 69 52 42 28i5 76 76 76 75 75 75 74 74 74 72 72 72 69 69 69 67 67 67 65 65 65 r.. se est 6-27 72 72 69 72 72 66 72 72 72 72 r, 69 57 54 68 50 67 48 66 On 65 52 42 28-45 72 72 72 72 72 72 69 69 69 67 67 67 66 66 66 64 64 64 - 60 Psf 8-27 64 64 64 64 64 64 64 64 s+. 64 64 64 64 54 64 50 - : 48 14 52 42 28-45 67 67 67 66 66 66 66 66 66 64 64 64 5e ... 70 psP 8-27 so sa eo 60 cu 6c 60 se 60 5a 50 48 c4 52 42 26<5 64 1 64 : 61 63 63 63 62 62 61 i 61 6P - ' 8-27 56 56 56 56 56c r 0 48 44 5a 4z 80 pse 28-45 60 60 60 60 60 60 60 60 E 56 56 5M1 5 &27 53 sa 53 53 53 53 53 64 53 53 53 50 - 46 44 52 42 RO 20i5 52 57 57 a7 57 57 57 . 56 _ 300 mfr. R3] 50 50 :r' 5 50 6050 50 48 44 50 42 26i5 Sa ...5450 57 54 54 110 pse 8-27 48 46 I 48 2045 52 52 52 / 5>ao 48 i5 45 48 4B 4e 44 46 42 _ 90 8-27 46 46 46 46 4E 06 46 46 45 46 46 46 46 46 46 46 46 46 46 46 46 46 46 44 46 46 42 120 Me :10 45 48 00 4a 44 -II Ji 43 43 48 28.45 50 50 50 _ 50 50 __ c1 50 •Nate ad6tional Installati07 ran I r=nent on UFO middle clamps.Please-efer to No,IC on Page x68,16[6.1: .Nett:additional Installation requirement for CAMO module damp.See Note 12 on page 3 for details. =min 72"span -min 64"span =0In 48 span eevost21(2020 • PROPRIETARY AND CONFIDENTIAL Module Mounting System 05/25/2018 Module Mounting System Bonding End Clamp (UFO) Bonding End Clamp (CAMO) PV Module XR Rail DETAIL D (Module Removed For Clarity) PLAN VIEW DETAIL G 0.4 X L ( MAX) Span 0.4 X L ( MAX) Existing Roof Structure PV Module PV Module Rail Attachment XR Rail (FlashFoot2 Cap Shown for Reference) 3/8"Module Gap II Module Mounting System (TYP) Roofing Bonding Mid Clamp (By Others) MI6PV Module PV Module DETAIL E Roofing Framing 1111 (By Others) Flashing �lr IRONRIDGE (FlashFoot2 Shown for Reference) DETAIL F FLUSH MOUNT SYSTEM EX-0015 EXHIBIT: EX-0015- page 2 of 3 • • PROPRIETARY AND CONNNFNIIAI 05/25/2018 Module MountingSystem Y Rail Attachment .< �. Bonding Mid Clamp -'1111.111101IP (FlashFoot2 Cap 1Z Shown for Reference) r Flashing \ v 10, H (FlashFoot2 �� Shown for Reference) `-- Roof Covering it (Shown for Reference) s Nittivo%i4.44%4,„ ..•! :/i1i., \",-z.„ ----- Roof Panels (By Others) 3/8"Bolt and Nut, (TYP) Module Mounting System � Bonding End Clamp (CAMO) \` c� OR ll Module Mounting System --,. Bonding End Clamp (UFO) I Roof Framing XR Rail Options,TYP: (By Others) DETAIL H f .30J 2.4 El 1.8 xR10 xR100 xRl000 ZA IRONRIDGE FLUSH MOUNT SYSTEM EX-0015 EXHIBIT: EX-0015 - page 3 of 3