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Home My WebLink About2848 WHIPTAIL LOOP; ; CBC2017-0487; Permitf 4 ity Of, L -C C H a shad Commerda[Permit Print Date: 08/02/2018 Permit No: CBC2017-0487 Address:' 2848 Whiptail Loop ,~Job Permit Type: BLDG-Commercial Work Class: Cogen Status: Closed - Finaled 6rc'e(_No: 2091202100 Lot #: Applied: 09/13/2017 V;I uation: $592,000.00 , Reference #: Issued: A 10/23/2017 Occupancy Group, Construction Type: Permit Finaled: # Dwelling Units:. Bathrooms: Inspector: TFraz Bediooms: Orig. Plan Check #: Final Plan Check Inspection: 8/2/2018 12:23:11PM Project Title: - Description: HME: 1,480 ROOF MOUNT PV, 533KW A~plicant: Contractor: 'ALLIANCE LAND PLANNING AND ENGINEERING HOME ENERGY SYSTEMS INC 'INC Z 'ELIZABETH SHOEMAKER 5980 Fairmount Ave, 10S 12248 Faraday Ave SAN DIEGO, CA 92010 Carlsbad, CA 92008-7W8 619-692-201S .,760- 431-9896 ---------- -BUILDING PERMIT FEE $2000+) k $2,31 3.00 BUILDING PLAN CHECK FEE (BLDG) $1,619.10 SB1473 GREEN BUILDING STATE STANDARDS FEE $24.00 ~STRONG MOTION-COMMERCIAL $165.76 Total Fees: $4,121.86 Total Payments To Date: $4,121.86 Balance Due: $0.00 Please take NOTICE that approval of your proj~ct includes the "Imposition" of fees, dedications, reservations, or other exactions hereafter collictiveiy referred to ~s "fees/exaction." You have 90 days from the date this permit was issued to protest imposition of these fees/exacti8ns. If you protest them, you must follow the protest procedures set forth in Government Code Section 66020(a), and file the protest and any other required informationwith the City Manager for processing in accordance with Carlsbad Municipal Code Section 3.32.030. Failure to tim'ely follow that'procedure will bar any subsequent legal action to attack, review, set aside, void, or annul their imposition. You a~e hereby FURTHER NOTIFIED that your right to protest the specified fees/exactions DOES NOT APPLY to water and sewer connection fi~es Ad 6apacity changes, nor planning, zoning, grading or other similar application processing or service fees in connection with this project 'NOR DOES IT APPLY to any fees/exactions of which you have previously been given a NOTICE similar to this, or as to which the katute of liktatio'n has previously otherwise expired. % j 1635 Faraday Avenue, Carlsbad, CA 92008-7314 1 760-602-2700 1 760-602-8560 f www.carlsbadca.gov I THE FOLLOWING APPROVALS REQUIREDPRIOR TO PERMIT ISSUANCE: [:]PLANNING ENGINEERING [:1 BUILDING [3 FIRE El HEALTH [:1 HAZMATIAPCD Building Permit Application Plan Check NooeAzorT-0"7 city 0 1635 Faraday Ave., Carlsbad, CA 92008 Est. Value Plan Ck. Deposit Ph: 760-602-2719 Fax: 760-602-8558 -*Orlsbad email: building@carlsbadca.gov Date — IF)— 1-7-t www.carlsbadea.gov JOB ADDRESS , , i . 'i . - 2848 Whiptail Loop West, Carlsbad, CA92010 suff'"PA"'E"'u,'" APN 209 120 21 00 CT/PROJECT # LOT # PHASE # # OF UNITS I # BEDROOMS # BATHROOMS I TENANT BUSINESS NA CONSTR. TYPE OCC. GROUP DESCRIPTION OF WORK. Include Square Feet of Afflacted Area(s) Commercial Building that is currently under construction proposes Solar PV on the rooftop. This job consists of installing a Rooftop Ballasted 533kW (DC) of PV that entails: 1~,480 Sunpower X22-360-COM panels, 8 SMA 24000, 9 SIVIA 20000, 4 SMA 12000 inverters, 7 sunpower Helix 250A 3P 4W AC combiners, 1 - 2000A load center, I - 2000A disconnect and I - 2000A line side tap. EXISTING USE- - TIF~MEO USE GARAGE (SF) PATIOS (SF) (SF) FIREPLACE AIR CONDITIONING -TFrFFE—SPRI N KLE RS , , .6 Building In Construction Solar Rooftop TM YES[]#. NOD YES[:] NO[—] I YESE]NOM APPLICANT NAME Prinary Can at Alliance Land Planning & Engineering PROPERTY OWNER NAME HM Electronics ADDRESS % 2~48 Faraday Avenue ADDRESS 2848 Whiptail Loop West CITY STATE, ZIP CITY STATE ZIP Carlsbad CA 92008 Carlsbad CA 92010 PHONE (760) 431-98§6 FAX (760) 431-8802 PHONE (619)318-1395 FAX EMAIL eshoemaker(cD-ailianceenq.com EMAIL derek(a).hamannco.com DESIGN PROFESSIONAL Home Energy Systems / Attn: Wenjie Chen CONTRACTOR BUS. NAME Home Enerov Svstems / Attn: Weniie Chen' ADDRESS b~10 Fairmont Avenue, Suite 105 ADDRESS 5980 Fairmont Avenue, Suite 105 CITY STATE ZIP CITY STATE ZIP San Diecio CA 92120 San Diecio CA 92120 ~HONE - FAX PHONE (619) 69'2'-2'Oi5 Cell: (51011229-0811 (619) 692-2015 Cell: (510) 229-0811 EMAIL EMAIL wenjie@hessolar.com wenjie@hessolar.com STATE LIC. STATE LIC.# CLASS #800657 1 00657 1 C-46&101crTyBus uc.# 1242302 ,,-,urjg,t,fj6o . ,usiness ano vroressions u)ae: Any uity or %.;oumy wnicn requires a permit to construct, aner, improve, oemoiisn or repair anystrucEure, prior to its issuance, atso requiresthe n , r a ch ged staterneritthat he Islicensed pursuarittothe provisionsofthe Contractor's License Lawfhapter9, commendingwith Section 7000ofDivision 3ofthe ,Bpups!n..r,dProfepe-'Iomni's~tofiMl.e.r'I at he Is exempt therefrom, and the basis for the alleged exemption. Any violation of Section C3 .5 by any applicantfor a permit subjects the applicant to a cit more t Oh civil Denaltv of n a undred dollars 35001). WORKERS' COMPENSATION Workers'Compensatlon Declaration: I hereby affirm underpenally ofpeduly one of Me following dedaraVons: -Insure for workers'compensabon as provided by Section 3700 of the Labor Code, for the performance of the work for which this permit Is issued. I have and .111 maintain a certificate of consent to self I have and will maintain workers' compensation, as required by Section 3700 of the Labor Code, for the performance of the work for which this permit Is Issued. My workers' compensation insurance carder and policy WC 10-17851-02 04101120118 number ire: In;urance Go. American Zurich Insurance Company Policy No. Expiration Date section need riot be completed ifthe permit Is for one hundred dollars ($100) or less. Certificate of Exemption: I c~r* that in the performance of the work for which this permit Is Issued, I shall not employ any person In any manner so as to become subject to the Workers' Compensation Laws of California, WARNING: Failure to secure workers'componeation coverage Is unlawful, and shall subject an employer to criminal penalties and civil fines up to one hundred thousand dollars (&100,000), In addition to the cost of compensation, da Ided for In Section 3706 of the Labor code, Interest and attorney's fees. )K.CONTRACTOR SIGNATURE AGENT DATE 9/7/17 OWNER-BUILDER, CLARATION I hereby affirm that I am exempt from Contractor's License Law for the following reason: 0 1, as owner of the property ;r my empitiyees with wages as their sole compensation, will do the work and the structure is not Intended or offered for sale (Sec. 7044, Business and Professions Code: The Contractor; 'License Law does not apply to an owner of property who builds or Improves thereon, and who does such work himself or through his own employees, provided that such improvements are not Intended or offered for sale. If, however, the building or Improvement Is sold within one yearof completion, the owner-builder will have the burden of proving that he did riot build or improve for the purpose of sale). 1, as owner of the property, am exclusively contracting with licensed contractors to construct the project (Sec. 7044, Business and Professions Code: The Contractors License Law does not apply to an owner of property who builds or improves thereon, and contracts for such projects with contractor(s) licensed pursuant to the Contractors License Law). am exempt Under Section —Business and Professions Code for this reastin: '1. 1 personally plan to provide the major labor and materials for construction of the proposed property improvement [DYes [3No 2. i (have I have riot) signed an application for a building permit for the 6roposed work. .1. 1 have contmcled with the following person (firm) to provide the proposed construction Onclude name address / phone / contractors'llcense number): 1 plan to provide pDruons of the work, but I have hired the following person to coordinate, supervise and provide the major work (include name / address phone contractors' license number): 1 will provide some of the work, but I have contracted (hired) the following persons to provide the work Indicated (include name / address / phone / type of work): A/A -,This Section R~P'ROPERTY OWNER SIGNATURE. . []AGENT DATE k 4 SOMPGOV0 =00 003VOGO (700:000-01300000MIQ16 OMUG0000 GUI)IMOV0 wav Is the applicant or future building occupant required to submit a business plan, acutely hazardous materials registration form or risk management and prevention program under Sections 25505, 25533 or 25534 of the Presley-Tanner Hazardous Substance Account Act? 0 Yes [Z] No : s the apolcant or future building occupant required to obtain a permit from the air pollution control district or air-guality management district? 0 Yes MNo s the facility to be constructed vAthin 1,000 feet of the outer boundary of a school site? 0 Yes WNo IF ANY OF THE ANSWERS ARE YES, A FINAL CERTIFICATE OF OCCUPANCY MAY NOT BE ISSUED UNLESS THE APPLICANT HAS MET OR IS MEETING THE REQUIREMENTS OF THE OFFICE OF EMERGENCY SERVICES AND THE AIR POLLU11ON CONTROL DISTRICT. I hereby affirm that there is a construction lending agency for the performance of the work this permit is issued (Sec. 3097 (i) Civil Code). Landes Name N/A - This Section Lenders Address 'waweaw (3(MVWo3aV0a)C) Ice* that I have read the application and state thatthe abm Information Is ooffectand that the hdonnation on the plans is accurate. I agree to complywith all Cillyordinanoes and State laws relating bD building conswictim. -I hereby authorize representative ofthe City ofCaftad to enter upon the above mentioned property for inspection purposes. I ALSO AGREE TO SAVE, INDEMNIFY AND KEEP HARMLESS THE CITY OF CARLSBAD AGAINST ALL LIABILITIES, JUDGMENTS, COSTS AND EXPENSES WHICH MAY IN ANY WAY ACCRUE AGAINST SAID CITY IN CONSEQUENCE OF THE GRANTING OF THIS PERMIT. OSHA An OSHA permit is required for excavations over 69 deep and dernolitim or construction of structures over 3 stories in height D01RATION: Every permit issued by the Building Official under the provisions of this Code shall e)pire by limitation and become null and void I the building or vork authorized by such permit is not commenced within 180 days from the date of such permit or L#ie building or vmrk authorized by such permit is suspended or abandoned at any firne after theAork is commenced fDr a periDd of 180 days (Section I 06AA Unibrrn Building Code). @~APPLICANT'S SIGNATURE - DATE9/7/17 Elizabeth Shoemaker t4 A %V K61:4-M aguKaffil" gwAth VA51n 1; Per'm it Type: BLDG-Commercial Application Date: 09/13/2017 Owner: Work Class:.-. !Cogen Issue Date: 10/23/2017 Subdivision: Status: Closed -, Finaled Expiration Date: 01/29/2019 Address: 2848 Whiptail Loop Carlsbad, CA 92010. IVIR Number: 6320 ~Schedulecl Actual Date Start Date' Inspection Type Inspection No. Inspection Status Primary Inspector Reinspection Complete Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No 'BLDG-Electrical Final No 07/17/2018 07/17/2018 BLDG-91, 064310-2018 Passed Andy Krogh Complete Complaints Inspection Checklist Item COMMENTS Passed BLDG-Building Deficiency Prefinal walk for second system Yes 08/02/2018 08/02/2018 BLDG-35 Solar 065774-2018 Passed Andy Krogh Complete Panel BLDG-Final 065775-20118 Passed Andy Krogh Complete Inspection Checklist Item COMMENTS Passed ~q . BLDG-Structural Fin al Yes BLDG-Electrical Final Yes Q - r,A ugust 02, 2018 Page 3 of 3 f Permit Type: BLDG-Commercial Application Date: 09/13/2017 Owner: Work Class: Cogen Issue Date: 10/23/2017 Subdivision: Status: Closed - Finaled Expiration Date: 01/29/2019 Address: 2848 Whiptail Loop Carlsbad, CA 92010 IVR Number: 6320 Scheduled., Actual Date Start Date Inspectio . n Type Inspection No. Inspection Status Primary Inspector Reinspection Complete 02126/2018 02126/2018 6LDG-35 Solar 049873-2018 Cancelled Andy Krogh Reinspection Complete Panel Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No BLDG-84 Rough 049875-2018 Cancelled Andy Krogh Reinspection Complete Combo(14,24,34,44) Checklist Item COMMENTS Passed BLDG-14 Spot checked modules/ballast at 10 Yes Frame-Steel-Bolting-Welding locations. (Decks) BLDG-Building Deficiency Resubmit plans to show actual module No layout. Engineering may have to be revised based on load values. BLDG-Final 049874-2018 Cancelled Andy Krogh Reinspection Complete Inspection Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No k BLDG-Electrical Final No 02/2712018 '02/27/2018 BLDG-35 Solar 049932-2018 Failed Andy Krogh Reinspection Complete Panel Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No BLDG-84 Rough 049933-2018 Failed Andy Krogh Reinspection Complete Combo(14,24,34,44) Checklist Item COMMENTS Passed BLDG-14 Spot checked modules/ballast at 10 Yes Frame-Steel-Bolting-Welding locations. (Decks) BLDG-Building Deficiency Resubmit plans to show actual module No layout. Engineering may have to be revised based on load values. BLDG-Final 049934-2018 Failed Andy Krogh Reinspection Complete Inspection Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No BLDG-Electrical Final No 02/28/2018 02/28/2018 BLDG-35 Solar 050175-2018 Passed Andy Krogh Complete Panel BLDG-Final 050176-2018 Partial Pass Andy Krogh Reinspection Incomplete Inspection August 02, 2018 Page 2 of 3 Permit Type: BLDG-Commercial Application Date: 09/13/2017 Owner: Work Class: Cogen Issue Date: 10/23/2017 Subdivision: Status: Closed - Finaled Expir'ation Date: 01/29/2019 Address: 2848 Whiptail Loop Carlsbad, CA 92010 IVR Number: 6320 Scheduled Actual Date Start Date Inspection Type Inspection No. Inspection Status Primary Inspector Reinspection Complete 02114/2018 02/14/2018 6LDG-84 Rough 048713-2018 Failed Michael Collins Reinspection Complete Combo(14,24,34,") Checklist Item COMMENTS Passed BLDG-Building Deficiency Resubmit plans to show actual module No layout. Lngineering may have to be revised based on load values. 02/15/2018 02/15/2018 BLDG-84 Rough 048952-2018 Partial Pass Michael Collins Reinspection Incomplete Combo(14,24,34,") Checklist Item COMMENTS Passed BLDG-14 Spot checked modules/ballast at 10 Ye s Fra~me-Steel-Boltin/g-Welding locations. (Decks) BLDG-Building Deficiency Resubmit plans to show actual module No layout. Engineering may have to be revised based on load values. 02/20/2018 Oi/201'2018 BLDG-35 Solar 049230-2018 Failed Michael Collins Reinspection Complete 'Panel Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No BLQG-Final 049231-2018 Failed Michael Collins' Reinspection Complete Inspection Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No BLDG-Electrical Final No 02123/2018 02/23/2018 BLDG-35 Solar 049631-2018 Cancelled Tim Frazee Reinspection Complete Panel Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No BLDG-84 Rough 049633-2018 Cancelled Tim Frazee Reinspection Complete Combo(14,24,34,44) r Checklist Item COMMENTS Passed BLDG-14 Spot checked modules/ballast at 10 Yes Frame-Steel-B61ting-Welding locations. (Decks) BLDG-Building Deficiency Resubmit plans to show actual module No layout. Engineering may have to be revised based on load values. BLDG-Final 049632-2018 Cancelled Tim Frazee Reinspection Complete Inspection Checklist Item COMMENTS Passed BLDG-Building Deficiency Not ready No BLDG-Electrical Final No August 02, 2018, Page 1 , of 3 EsGil Corporation In (Partnership with Governmentfor Building Safety DATE: 10/18/2017 -JURISDICTION: I !Lrlsbad U APPLICANT JURIS. lelcf PLAN REVIEWER 0 FILE PLAN CHECK NO.: CBC2017-0487 SET: 11 ,PROJECT ADDRESS: 2848 Whiptail Loop West PROJECT NAME: H.M. Electronics [(8)24 + (9) 20 + (4) 12] KW rooftop PV system Th , e plans transmitted herewith have been corrected where necessary and substantially comply .with,the jurisdiction's building codes. The plans transmitted 'herewith will substantially comply with the jurisdiction's codes When fninor deficiencies identified below are resolved and checked by building department staff. 'The plan's transmitted herewith have significant deficiencies identified on the enclosed check list ~and should be corrected and resubmitted for a complete recheck. F T The'check list t~ansmitted herewith is for your information. The plans are being held at Esgil Corporation until corrected plans are submitted for recheck. The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant 'I contact person. The applicant's copy of the check list has been sent to: EsGil Corporation staff did not advise the applicant that the plan check has been completed. FT EsGil Corporation staff did advise the applicant that the plan check has been completed. Person contacted- Telephone #: a' ~0 Email: Fax #: te contacted: (by Mail , Telephone Fax In Person REMARKS: BY: Morteza Beheshti Enclosures: EsGil Corporation GA EJ E] MB F1 PC 10/12 EsGil Corporation In (Partnership with governmentfor Building Safety DATE, 9/22/2017 El APPLICANT JURIS. JURISDICTION: Carlsbad U PLAN REVIEWER U FILE PLAN CHECK NO.: CBC2017-0487, SET: I PROJECT ADDRESS: 2848 Whiptail Loop West PROJECT NAME: H.M. Electronics [(8)24 + (9) 20 + (4) 12] KW rooftop PV system The plans transmitted herewith have been corrected where necessary and substantially comply with the jurisdiction's building codes. [-71 '.The plans transmitted herewith will substantially comply with the jurisdiction's codes when minor deficiencies identified below are resolved and checked by building department staff. [7:, -The plans transmitted herewith have significant deficiencies identified on the enclosed check lis.~ and should be corrected and resubmitted for a complete recheck. The check list transmitted herewith is for your information. The plans are being held at Esgil 'Corporation until corrected plans are submitted for recheck. lil-The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant contact person. The applicant's copy of the check list has been sent to: -Es'Gil Corporation staff did not advise the applicant that the plan check has been completed. K EsGil Corporation staff did advise the applicant that the plan check has been completed. Person contacted: Home Energy Systems Telephone #: 510.229.0811 D :5171 111-7 (by—Z ) Email: wenjie@hessolar.com Fax #: "ail Telepho Fax In Person R EM S. EMARKS: 7.` -"-""-.By: Morteza Beheshti Enclosures: C~ EsGil Corporation E] GA [:1 EJ F] M B F~ PC 9/14 9320 Chesapeake Drive, Suite 208 San Diego, California 92123 (858) 560-1468 Fax (858) 560-1576 Carlsbad CBC2017-0487 '9/22/2017 GENERAL PLAN CORRECTION LIST JURISDICTION: Carlsbad I PROJECT ADDRESS: 2848 Whiptail Loop West PLAN CHECK NO.: CBC2017-0487 FOREWORD (PLEASE READ): ~this plan revibw is limited to the technical requirements contained in the International Building Code, Uniform Plumbing Code, Uniform Mechanical Code, National Electrical Code and state laws regulating energy conservation, noise attenuation and disabled access. This plan review is based on regulations enforced by the Building Department. You may have other corrections based on.laws and ordinances enforced by the Planning Department, Engineering Department -or other departments. 4~ The following items listed need clarification, modification or change. All items must be satisfied before the plans will be in conformance with the cited codes and regulations. The approval of _'the,plans does not permit the violation of any state, county or city law. Please make all corrections and submit two new complete sets of prints to: ESGIL CORPORATION. To facilitate rechecking, please identify, next to each item, the sheet of the plans upon which each correction on this sheet has been made and return this sheet with the revised plans. Please indicate here if any changes have been made to the plans that are not a result of corrections from this list. If there are other changes, please briefly describe them and where theyare located on the plans. Have changes been made not resulting from this list? L3 Yes L] No Jurisdiction Code cb By ordinance Bldg. Permit Fee by Ordinance Plan Check Fee by Ordinance -Ty' pe of Review: El Complete Review El Structural Only Repetitive Fee -E] Other Rim Repeats 1.5 Hrs. @ EsGill Feke $105.00 Based on hourly rate 1~7. 4-t Comments: 1.5 hour plan review. A $1157.50~ Sheet 1 of 1 macvalue.doc + 1~ -SA Carlsbad CBC2017-0487 9/22/2017 [DONOTPAY- THIS IS NOT AN INVOICE] VALUATION AND PLAN CHECK FEE JURISDICTION: Carlsbad PREPARED BY: Morteza Beheshti BUILDING ADDRESS: 2848 Whiptail Loop West PLAN CHECK NO.: CBC2017-0487 DATE: 9/22/2017 BUILDING OCCUPANCY: TYPE OF CONSTRUCTION: :4, BUILDING PORTION AREA (Sq. Ft.) Valuation Multiplier Reg. Mod. I MO L] VALUE Air Conditioning Fire Sprinklers TOTAL VALUE :nr, 7` darlsbad CBC2017-0487 ~;-,-T.9/22/2017 A'5 ELECTRICAL and ENERGY COMMENTS PLAN REVIEWER: Morteza. Beheshti ELECTRICAL (2016 CALIFORNIA ELECTRICAL CODE) Provide the required separate ground electrode for the "photovoltaic rack assembly" per 690.47 (D) or connect to the building electrode system. If the electrode conductor is routed through electrical equipment (disconnects, panels, meter enclosures, etc) then provide a detail on the plans describing compliance with CEC 250.64(C). (Conductor splices only allowed with compression connectors or exothermic welding.) Size the ground electrode conductor per 250.166, not smaller than #8. Corrections should be made on single line and where indicated on plans. 2. Please address each building ground electrode system. Labeling of service disconnecting means. .,3. Please provide the 4' clear at the arrays both centerline axis per CBC 3111.23.2. STRUCTURAL Of, 1. Note on the plans for the ballasted system that the engineer of record for the ballasted system, CTS, will provide special inspection for the construction ofthe ballasted system per CBC Sections 1705.1.1 item #1 and 1704.2.1 2nd paragraph. 2'. The plans shall indicate that special inspection will be provided (by the engineer of record) for the "BALLASTED SYSTEM". Section 1705. 1. 1. Note: If you have any questions regarding this Electrical and Energy plan review list please contact Morteza. Beheshti at (858) 560-1468. To speed the review process, note on this list (or a copy) where the corrected items have been addressed on the plans. A. 'ENGINEERING FIRE'PREVENTION 760-602-4610 760-602-2750. 760-602-4665 Chris Sexton Chris Glassen Cindy Wong 760-602-4624 760-602-2784 760-602-4662 Chris.Sexton@carlsbadc~.gov Christopher.Glassen@carisbadca.gov Cynthia.Wong@carlsbadca.gov Fl Gina Ruiz F] ValRay Marshall Dominic Fieri .,'760-602-4675 760-602-2741 760-602-4664 ~Gina.Ruiz@cadkqd9a9Q_V Val Ray.Marshail@carisbadca.gov Qorninic.Fieri@cadatadg~~ Teri Delcamp F] Linda Ontiveros F-1 760-602-4611 760-602-2773 t~ri.delcamj3@carisbadca.gov Linda.0ntiveros@car1sbadca.gqv PLANNING DIVISION Developmen't Services Planning Division BUILDING PLAN CHECK APPROVAL C.IT y 0 F 1635 Faraday Avenue DA (760) 602-4610 , ~CARL,SWAD P-29 www.carlsbadca.eov DATE: 9/2~/17 PROJECTNAME: HME ROOF PV PROJECT ID: SDP15-25 APN: 209-120-21-00 PLAN CHECK NO: CBC2017-0487 SET#: I ADDRESS: 2848 WHIPTAIL LOOP This plan check review is complete and has been APPROVED by the PLANNING .-Division. By: Teri Delcamp A.Fi6al Inspection by the PLANNING Division is required E] Yes Z No You ma~ also have corrections from one or more of the divisions listed below. Approvai ,-from these divisions may be required prior to the issuance of a building permit. Resubmitted plans should include corrections from all divisions. El This plan check review is NOT COMPLETE. Items missing or incorrect are listed on the attached checklist. Please resubmit amended plans as require'd. Plan Check Comments have been sent to: For questions oi clarifications on the attached checklist please contact the following reviewer -as marked: D!,kineerinz.1.,inc, RECEIVED -.,STRUCTURAL CALCULATIONS OCT 1 12017 CITY OF CARLSBAD` HME SOLAR PANEL BALLAST SYSTE BUILDING M DIVISION FOR HOME ENERGY SYSTEMS A ~SUBJECT: SHEET NO: Summary.: .................................................................................................................... .................................. 1 GravityCalculation ...................................................................................................................................... 2 LateralCalculation ...................................................................................................................................... 3 SunpowerWind Design Summary ...................................................................................................... 4-7 SunpbwerWind Calculation .............. ....................................................................................................... 8 AM )FESS/0 4e HEAt CO LL) 483 rn X .0 0/18 cjvj~_ OF CP,0 Job N,6.: - Designed By: EAS A Date: October 9, 2017 Checked By: BT13 Salt Lake City, UT 16466 Bernardo Center Dr. #279 - San Diego, CA 92128 858.673.8416 tel: cag 17 21 X, 7" Pg 1 Eh4gineenng Inc. October§, io' 17 (VIA EMAIL tmiller@hessolar.com) A J -'-Mr.,Tyler Miller Home Energy:Systems 5980 FairmoLiht Avenue' Suite .105 % Sari bie g-o,, CA 92120 Re:- RooftopsolarMHME - R2H Project No.: 17093 ,Dear Mr. Miller:' The purpose of this letter is to summarize whether the proposed solar panel and ballast layout will affect the building integrity. Specifically, the roof framing and building lateral system. Ballasted solar panels were also -checked for wind uplift. Solar panel ballast layout and specifications are provided by Home Energy Systems. According the specifications, the maximum height of the solar panels is 11.34 inches. It is assumed that because this.is less than 12 inches, there will be no live load above and below the panels. The calculated maximum solar panel weight of 13.86 psf is less than the live load of 20.0 psf therefore, the roof framing is adequat , e for supporting the proposed solar panel layout. Based on the specifications, the average weight for the ballasted solar panel is 6.47 psf or 0.72 psf less than the design load of 7.0 psf used in the calculations. Therefore, no alterations to the building lateral system are required.,-..- Should you have any questions or need any additional information, please do not hesitate to contact our office. Thank ybu._ Sincerely, R2H 'ENGINEERING, INC. Robert Hendershot- President 16466 Bernardo Center Drive, Suite 279 Las Vegas, NV 'Sin Diego, CA 92128 Salt Lake City, LIT 858.673.8416 tel - 4 Pg 2 RyH,,Engtneering,,,lnc. JOB NO. PROJECT ~HME SOLAR PANELS DATE BY SUBJECT GRAVITY DESIGN SHEET - OF DL 01-~er,74 ~~[,ee4 FV2-0-Z) Ll &s7 1-1 e- Ir C4) pv goo. PV5 - O.CA Y Ll tc F's 3:7. 63 S- -(q Ll DL I I W- Tc+-, ?-OP 9~ LL CA :f CAI (0, C,- f -L c j~A s i, 4~j c, 1,~ t, G, cen 6b L,4) /3 .9 6 .,Wj&j 6(;tt~jl b~ C(L'Je-~ 41"c !,J~- +[,<7 -1i rRull ~ jz~H- Engineerinz.,Inc. PROJECT HME SOLAR PANELS JOB NO. DATE Pg 3 By SUBJECT LATERAL DESIGN SHEET - OF U lateeal design, R21-1 accounted for a seismic 'dead load of 7.0 psf for future panels. The average solar:panel array weight. is 6.47 psf per the client 'sheet PV202. Because tl~is is less than 7.0 psf, the weight of the solar panels is less than~ what the building was designed for therefore, no alterations to the lateral system are required. Pg 4 INTRODUCTION Helix is a m6unting system and photovoltaic (PV) module integrated solution. It is designed to be installed on flat*7roof ~uilclihg~ (less than a 1 in 12 slope) without the use of penetrating fasteners through the roof membrane. There are two configurations for the Helix Product, South Tilt (ST) and Dual Tilt (DT). This document demonstrates the wind're;istame of the system and its compliance with the International Building Code, and is meant to be used in 'Cdnju'6cti6n %~ith the Helix DT Design Tool, found here, https://helix-calculator.sunpower.com. -Helix is designed to resist wind forces primarily without mechanical anchorage and for this reason has a unique ;geomet~y designed to resist wind forces. Design methodology for this type of roof mounted equipment is not explicitly described in the ASCE Stanclar'd 7-10. In such situations the Standard requires (Section 26.1.1) "Buildings and other structu~es wind load....-,sh'all be designed and constructed to resist wind loads determined in accordance with Chapters. 26 throu .gh 31." The win,cl,load(s) to assure a secure Helix system were determined through wind tunnel testing in combliancd with the requirements in ASCE 7-10. Wind tunnel testing was conducted by CPP Wind Engineering and Air Quality.Consultants in,Ft.Collins, CO, under the direction of David Banks PV,WIND LOADS The Structural Engineers Association of California (SEAOC) released a document (SEAOC PV2-2012) that developed specific r6of zones and loads for rooftop PV. The specifics of the document were based on extensive wind tunnel te'sting of various pr-6ducts and configurations to provide validity to its claims. The zoning of the wind zones on the roof devi ates from the values found in ASCE-7. This paper help set the precedent for SunPower to release product specific wind zones'based on'.the'Helix design. Sunpower performed wind tunnel testing and developed custom zones that help'to more'6ccurately ballast the Helix. system for expected loads. System geometry plays a. key role in the shape -and si ze ofthese zo'6.es, and as such the Helix DT and ST systems do not share common roof zones. F.igure,l summarizes these wind zones, as well as Gcp and other data required to determine ballast for the Helix f Product. .0% 0'~ 7' J, Pg 5 Figure 1 n Wind Loads All Roof Heights Helix DT System Roofs < 50 ROOF ZONES *all comers A B *7 -11 C ILB NOMINAL NET PRESSURE COEFFICIENTS (GCp) 'minimum GCp 0.04 0.8 A'- 0.6 B C. 0.4 _4 D 0 . 2 0 10 An, 100 1000 ,Gqp, EZone PARAPET FACTOR v 0.08 yp = I for all parapet heights in Zone E I 1.12 0.06 1.08 106 U 0.04 - 3.04 1.02 0.02 yp J.0D Z.- 0.98 0.96 00 1 4 0. 94 10 100 0.92 #of Modules- k 0.9D 0.88 , - . 0.05 all 0.15 0.2 0.25 0.3 0 Par2pet Hftht/ Building Height Pg 6 Helix DT System Roofs < 50 jEFFECTIVE WIND AREA (A) MODULE & COMPONENT WEIGHTS (W) SYSTEM, Array Location Effective Wind Area (A) PART Weight (tbs.) 96 Cell Form factor (17.6 ft' per panel~ DT Chassis 5.9 DT, Corner 58.3 Leading Tray 2.7 DT, E/W Edge 128.1 Link Tray 2.0 DT, N/S Edge- 115.6 Module (96,128, P) 41,56,51 382.0 -.128 Cell Form factor (23.29 ft2 per panel) DT, Corner - 75.2 ,DT,'E/W Edge - 152.3 Dt,,N/S Edge 159.3 DT, Center 316.0 Meries Form factor (22.22 ft2 per panel) DT, Corner- 71.8 DT, E/W Edge,' 145.3 DT, N/S Edge 151.9 ~'!)T, Center ARRAY EDGE FACTORS (E) Zone NIS Edge EIIN Edge t A, 1 1.0 ..A:'Effective Wind Area for Element (ft2) An. Norrnal~iz'ed Wind Area, A, = 1000 L2 G: Minimum of 0.4,~rh_L or h, and cannot be less than 15ft. ~~ray Edge Factor h: Mean roof height above ground (ft.) ,L: WidtKof building on Longest side (ft.) yo: Parapet height factor 'W: Weight of Module and Structure (lbs.) Pg 7 BALLAST DETERMINATION " .—The figures, tables, and equations in ASCE 7-10 are used as applicable to determine design forces on buildings 6 iid other, structures. 'However, the values in ASCE 7-10 are not applicable to products like Helix. In such cases, ASCE 7-10 requires compliance'With its section 26. 1.1 and wind tunnel testing. In order for, these tests to be applicable, the wind tunnel testing must include a model of a representative building the modules will be installed on, as well as accurate modeling of upstream turbulence caused by terrain roughness. The basic equation used. to determine design wind forces in ASCE 7-10 is the velocity pressure equation: q (ASCE 7-10, Equation 30.3-1) .00256K.,K~,KdV' To determine the pressure, and therefore design loads, the qz determined in accordance with these methods is ~ultiplied* by.a Yelocity pres'sure coefficient, Cp. P = qCpypE In this equa'.tion,~q')ncorporates the site-specific K variables, basic wind speed V, and parapet factor. In ord&r,.to determine ballast quantities. needed to resist wind pressures, Wind Force (F) is determined by taking the wind pressure over the module area: 7w, F qCpypEAm Panel GCp values scale with building dimensions and can be determined from Figure 1. These coefficients allow for'the determination of the required product weight mandated by code. J ASC.E 7- 10, gives the equati`6n'for Kz as well as a rational method to interpolate between exposure categories., K, 2.01 Zeval )2/1'eva, (ASCE 7-10, Table 30.3-1, Note 1) ASiCE.7101 2.,4.1.,gives an ASID load factor of 0.6D + 0.6W. Solvingf6r D, we get D = W. In'other words, we need to provide a dead load that equals the wind force to arrive at a ~6~elarray weight. This can be achieved with a combination of weight provided by the module and t.sy~iem com p-~66-ents, as'Well as cement ballast blocks. 7 Combining' the 'above equations, the required dead load to resist wind loads.becomes; D =.00256K V 2CpypEA (Equation 1) Kd Where: K~; Dir6ction-ality facto( 'V: ASCE 7-10 wind zone (expressed in MPH, 3-second gust at 33', Exposure C) -Cp:,' ~,Velocity pressure coefficient from Figure 1 Yp: Parapet Factor 'E: Arra'y Edge Factor Am,., Module Area, [Variable,' see table on previous page] .4 SUNPOWEW Pg 8 SITE-SPECIFIC HELIX DT SAMPLE WIND METHODOLOGY CALCULATION 5F~WIND ZONE A, PAN~C,~~ =AT9GORY I (CORNER) Input, PV P NEL & RACKING INFORMATION Panel Name = SunPower96-ceII module Panel Length, loanal - , 61.4 in Panel Width, wp,,., 41.2 in Panel Area, Apar,l 17.57 sf Tent Area,'Ate.t 35.14 sf Gr;und 6verage Ratio (GCR) 0.91 Panel Weight, w,. - 41 lb BUILDING GEOMETRY Building Height, H 30 ft P e arapet Heig ht, h pt 5 ft Building Width on Longest Side, W 585 ft Characteristic Building, Length, La 30.00 ft LB 0.4V[HWI, not to exceed H or be less than 15 ft WIND LOAD CRITERIA (PER ASCE 7-10 CHAPTERS 26 & 30) Code Section Basic Wind Speed*, V 110 mph 26.5,1 Exposure Category' C 26.7 Risk C ategory* 1.5.1 -Note: Verify that 8asic Wind Speed (V) used is selected from the appropriate Figure 26.5-1 in ASCE 7-10 (A, 8, or Cl based on the Risk (Occupancy Category) Velocity Pressure. Coef~cient, K, 0.982 30.3.1 Topographic Factor K 1 26.8.2 Directionality Fact K or, d 0.85 26.6 Velocity Pressure, qh 0.00256KKnKdV2 25.86 psf 30.3.2 BALLAST CALCULATION FOiAGIVEN HELI~ DT TENT (PER SEAOC M2 2012 &WIND TUNNEL TEST DATA) Roof Zone= See wind design methodology ;6 Panel Category 1 Category I Exposed Corner last Block Weight ,Sal , 14 lb Anchor Type (Used if Required by Uplift Calc) OMG PowerGrip Plus' Anchor capacity 418 Itis Maximum Allowable Distributed Weight on Roof psf v,,A~ib=Ap.n,lXAv1b= 58.33 sf 1000ki /Le 2 b 64.81 sf ,.Edge Factor, VE 1.0 See wind design methodology Parapet Factor, Vp 1.08 See wind design methodology Net Pressure Coefficient, GCL= 0.54 See wind design methodology d VEVpG Take M~X,YEypGcLspadRuj rone an cu~ex 0.59 See wind design methodology Uplift Force from Wind, F.Pli, 534 lb F = qh x GCL x VE x Vp x Ater, PV System Weight, W., 100.6 lb Ballast Weight Required 434 lb 0.61) - 0.6Wup a 0 => Dballast a Wup - Dsp N Blocks Requirid w/o Anchors= umbe;of 31 System Distributed Weight w/o Anchors 13.8 psf Anchors Requi~ecl? .1 No Anchors required if (w, + Wballast) > Wall— Number of Anchors Required 0 Number of Blocki Required w/ Anchors 31 System Disiributed Weight wl Anchors= 13.8 psf <= 18 psf OK SUMMARY OF DESIGN J zone Panel Category GCL F.,ufk (lbs) Ballast Required (Ibs) # Blocks #Anchors System Distributed Weight A 1 0.54 534 434 31 0 13.85 T 619 692~2015 HESSoln- rcom September 1, 2017 City of Carlsbad kN 1635 Farada Ave. Y_ Carlsbad, CA 92008 4% Subject: HME Carlsbad - Letter of Authorization OA, "Iq 'Y 2848 Whiptail Loop West, Carlsbad, CA 92010 APN: 20,9-120-021-00 _;~, 70, To Whom- It May Concern: Hom6 Energy Systems, applicant, authorize Alliance Land Planning & Engineering, as represented by Elizabeth Shoemaker to act as an agent to sign for permits and processing 4. documents in the City of Carlsbad on our behalf for the project known as HME Carlsbad .,Iocatea at 2848 Whil2taif Lo~12 West, Carlsbad, CA 92010. I understand thatflome Energy Systems, Inc. named on the application is the financially -responsible party for additional collections, charges and refunds. .,,Sincerely, 4i~ OL, e (Signat ur Wenjie Chen Print Name - Address: Hom,e Energy Systems 5980 Fairmount Avenue, Suite 105 San Diego, CA 92120 Phon~': (619) 692-2015 5 1,5980,Fairmounf Avenue # 1051 San Diego, CA 92108 CSL 800657 City of U, C fi sbad 'PL t Print' Date- 08/03/2018 Permit No: PREV2017-0289 Job Address: 2848 Whiptail Loop Permit Type: BLDG-Permit Revision Work Class: Residential Permit Revisi Status: Closed - Finaled Par~~l No" 2091202100 Lot #: Applied: 12/04/2017 Valuation "k $0.00 Reference #: Issued: 12/18/2017~ ..Occupancy Group: Construction Type Permit 08/03/2018 Finaled: # Dwelling Units: Bathrooms: inspector: B~drooms: Orig. Plan Check #: CBC2017-0487 Final Plan Check #: Inspection: Project.Title: D~scription:,' HIVE: LAYOUT CHANGE FOR SOLAR PANELS Applicant: Contractor: ALLIANCE LAND PLANNING AND ENGINEERING HOME ENERGY SYSTEMS INC -'INC,, ELIZABETH SHOEMAKER 5980 Fairmount Ave, 105 2248 Faraday Ave SAN DIEGO, CA 92010 Carlsbad, CA, 92008-:7208 619-692-2015 7607431-4~96 FEE AMOUNT MANUAL BUILDING PLAN CHECK FEE $196.88 -Total-Fe-es:,; $ f96.88 Total Payments To Date $ 196.88 Balance Due: $0.00 Building IDivision 1635 Far aday Avenue, Carlsbad CA 92bO8-7314 760-602-2700 760-602-8560 f www.carlsbadca.gov PLAN CHECK REVISION OR Development Services L( Of DEFERRED SUBMITTAL Building Division APPLICATION 1635 Faraday Avenue bad 760-602-2719 s -C B-1 5 www.carisbadca.gov CBC 2017-0487 Plan Revision Number P1ZF,\/20l7- 0221 Original.Plan Check Number Pioject Address :2848 Whiptail Loop Delta 1 - Solar Rooftop Module Layout Redesign General Scope of Revision/Deferred Submittal: for..HME Carlsbad project. CONTACt INFORMATION: Name Elizabeth Shoemaker Phone 760-431-9896 Fax 2248,,Faraday Ave. Carlsbad 92008 'Address city Zip eshoemaker@allianceeng.com .Email Addr'6ss Original plans prepared by an architect or engineer, revisions must be signed & stamped by that person., to,ilements re~ised: 10-1 Plans' F] Calculations F] Soils E] Energy E] Other Describe revisions in detail 30 List page(s) where each revision is shown Solar Module Array Layout Sheet PV 201 4~~_- Does this revision, in any way, alter the exterior of the project? F1 Yes No 5. ~bo'e_s this revisionadd ANY new floor area(s)? Yes nE No Db6s this revision affect any fire related issues? E] Yes nE No No Isthis' a complete set? no Yes f 12/04/17 A!5S ure.,: Jghat Date 1635 Faraday Avenue,.Carlsbad, CA 92008 Ph:760-602-2719 Fax:760-602-8558 Email: building@carisbadca.gov www.carlsbadca-ao 41 EsGil Corporation In (Partnership with Governmentfor ftifding Safety DATE: 12/14/2017 EI APPLICANT JURIS. JUR(sbICTION: City of Cirlibid-_7 U PLAN REVIEWER L3 FILE PLAN CHECK NO.:. preV2017-0289 REV FOR CBC2017-0487 SET: I -t'PROJECT ADDRESS: 2848 Whiptail Loop PROJECT NAME: H.M. Electronics [(8)24 + (9) 20 + (4) 12] KW rooftop PV system The plans transmitted herewith have been corrected where necessary and substantially comply with the jurisdiction's building codes. The plans transmitted herewith will substantially comply with the jurisdiction's 'dodes when minor deficiencies identified below are resolved and checked by building department staff. plans transmitted herewith have significant deficiencies identified on the enclosed check list' ~nd should be corrected and resubmitted for a complete recheck. i The check list transmitted herewith is for your information. The plans are being held at EsGil El -, ; I Corporation until corrected plans are submitted for recheck. Thb-applicant's copy of the checklist is enclosed for the jurisdiction to forward to the applicant contact person. The applicant's copy of the check list has been sent to:, EsGil Corporation staff did not advise the applicant that the plan check has been completed. 'EsGil Corporation staff did advise the applicant that the plan check has been completed. P6rsoh contacted: Telephone #: .1S Date contacted: (by Email: mail Telephone Fax In Person " - - E REMARKS: By: Morteza Beheshti Enclosures:-PfflMV5-V SU~ EsGil Corporation [:1 GA EJ EJ MB F] PC 12/7 v ~'43N Chesapeake Drive, Suite 208 San Diego, California 92123 (858) 560-1468 Fax (858) 560-1576 City of Carlsbad prev2017-0289 REV FOR CBC2017-0487 -,12/14/2017 [DO NOT PAY- THIS IS NOT AN INVOICE] VALUATION AND PLAN CHECK FEE 4. jURISDICTION: City of Carlsbad 'REV FOR CBC2017-0487 "0 PREPARED BY: Morteza Beheshti ADDRESS: 2848 Whiptail Loop A aluation ultiplier Reg. Mod. ALUE PLAN CHECK NO.: prev2017-0289 DATE: 12/14/2017 BUILDING OCCUPANCY: B BUILDING AREA V PORTION (Sq. Ft.) M t TOTAL VALUE -Jurisdiction Code cb By Ordinance ~Iclg. Permit Fee by Ordinance ~Pan Check Fee by Ordinance Type of Review: El Complete Review Other Repetitive Fee Repeats 'A EsGill Fee Based on hourly rate Comments: 1 $196.881 Ej Structural Only 1.5 Hirs. @ $105.00 ~-50 Sheet 1 of 1 macvalue.doc + t? InC. RECEIVED 7 f eering, woe! DEC 0 4 2017 CITY OF CARLSBAD :STRUCTURAL CALCULATIONS BUILDING DIVISION HME SOLAR PANEL BALLAST SYSTEM FOR -.HOME ENERGY SYSTEMS SUBJECT:,'.-`V SHEET NO: Summary ........ I GravityCalculation ..................................................................................................................................... 2 LateralCalculation ....................................................................................................................................... 3 Sunpower Wind Design Summary ...................................................................................................... 4-7 t SunpowerWind Calculation ...................................................................................................................... 8 JIM Aga Aftk JU ES ROBE C. EN S Lo CID I.r. An 1!2 Exp. 4/iollS lvl~L OF CAO Job No.:, 17093 Designed By. EAS November29,2017 Checked By: BTB 16466 Bernardo Center Dr. #279 Salt Lake City, UT! -,'.San Diego, CA 92128 Las Vegas, NV 858.673.8416 tel 17 -Engineert.*ng, Inc. ~Nov6mber 29, 2617 , (VIA EMAIL tmiller@hessolar.com) Mr. Tyler Mill6r i H me Energy Systems 0 980 Fairmount Avenue . Suite 105 Sa , n Diego, CA.92120. Re: ~Rooftop Solar at HME :r 11~1-11 Project No.: 17093 ;,4 bear Mr. M' i I 1'e'r: -'The'pu~rpose of this letter is to summarize whether the proposed solar panel and ballast layout will affect the 'building, integrity. Specifically', the roof framing and building lateral system. Ballasted solar panels were also, ch. ecked for wind uplift. Solar panel ballast layout and specifications are provided by Home Energy Systems. A c ~'cording,to,the specifications, the maximum height of the solar panels is 11.34 inches. It is assumed that "because.this is less. than 12 inches, there will be no live load above and below the panels. The calculated, maximum 'solar panel weight of 13.86 psf is less than the live load of 20.0 psf therefore, the roof framing is adequate for supporting the proposed solar panel layout. Based on the specifications, the average weight for the ballasted solar panel is 6.73 psf or 0.27 psf less than the 'd6~ign load 6f,7.0 psf used in the calculations. Therefore, no alterations to the building lateral system are requir6d.~., sli6uld you have any que'stio6s or need any additional information, please do not hesitate to contact our office. Thank you.,, - Sin cerely, 1121-11 ENGINEERING, INC. Robert Hendershot V:. President .,16466 Bernardo Center Drive, Suite 279 Las Vegas, NV 'San Diego, CA 92128. Salt Lake City, UT. "858.673.8416 tel m R Engineering, Inc. HME SOLAR PANELS 'PROJECT BY T GRAVITY DESIGN SUBJEC.- Page 2 JOB NO. DATE SHEET - OF r~- DL 1~j V 2-0 Z t-~e In jA R -7 3 -CA pv5_0 r4 4 ~0- ox- DL I 1,,~-S Tc+~ 3 o p S; cl Lt-z L L Li pu- CA110L,- ej _T0 < "s 1'4 V-1 I Ll. 13 9 6 /r, L,4) 41,6 M~ f Engineering, Inc. JOB NO. 77, PROJECT HME SOLAR PANELS DATE Page 3 By 'SUBJECT LATERAL DESIGN 1- - SHEET - OF -~l n-the- original I ral, design, R2H accounted for a seismic ate ,dead load of 7.0 psf for future panels. The average solar: panel array weight. is 6.73 psf per the client sheet PV202. Because Ahis is less than 7.0 psf, the weight of the solar panels is, less than what the building was designed for ,therefore,, no alterations to the lateral system are required. Page 4 HELIX DT,_WIND DESIGN SUMMARY INTRODUCTION 'Helix is a mounting system and photovoltaic (PV) module integrated solution. It is designed to be installed on flat-roof buildings (less than a 1 in 12 slope) without the use of penetrating fasteners through the roof membrane. --There are* two configurations for the Helix Product, South Tilt (ST) and Dual Tilt (DT). This document demonstrates the wind resistance of.the system 6n.d its compliance with the International Building Code,. and is meant to be used in co,ni6nction with the Helix DT Design Tool, found here, https://helix-calculator.sunpower.com. Helix is designed to resist wind forces primarily without mechanical anchorage and for this reason has a unique geometry designed to resist wind forces. Design methodology for this type of roof mounted equipment is not explicitly described in;the ASCE Standard 7-10. In such situations the Standard requires (Section 26.1.1) "Buildings and other stiuctures wind load ...'shall be designed and constructed to resist wind loads determined in accordance with Chapters"' -26t~rodih3l-." The wind load(s) to assure a secure Helix system were determined through wind tunnel testing in compliance with. the requirements in ASCE 7-10. -Wind tunnel testing was conducted by CPP Wind Engineering and Air Qualit Consultants in Ft. Collins', CO, under the direction of David Banks P.V WIND LOADS 'fhe'Structur~l Engineers Association of California (SEAOC) released a document (SEAOC PV2-2012) that roof zones and loads for rooftop PV. The specifics of the document were based on extensive wind ,developed ;I~6cifi~ tunnel testing of various products and configurations to provide validity to its claims. The zoning of the wind zones on m the Val th oof deviates fro ues found in ASCE-7. This paper help set the precedent for SunPower to release product Specific wthd zones based on the Helix design. Sunpower performed wind tunnel testing and developed custom zones that help to more accurately ballast the Helix system for expected loads. System geometry plays a key role in the shape L and size'of these zones;- and as such the Helix DT and ST systems do not share common roof zones. Figure 1'summarizes these wind zones, as well as Gcp and other data required to determine ballast for the Helix Product. 10- sunpowercom SUNPOWER 517~28 21 December 2015 0 Figure I Design Wind Loads All Roof Heights Helix DT System Roofs < 50 ROOF ZONES *a// comers A dc -91 D C 7 71 NOMINAL NET PRESSURE COEFFICIENTS (GCp) *minimum GCp =0.04 0.8 A CL 0.6- 0. 4 0.2 D 0 10 100 1000 An GCp, E Zone PARAPET FACTOR 0.08 yp = I for all parapet heights in Zone E 1.12 0.06 1.10 1.08 CL U 0.04 - 1.06 1.04 0.02 1.02 yp 1.00 0.88Z 0.98 o.ob 0.96 0.94 1 10 100 0.92 0.90 #of Modules 4 0 0.05 0.2 0.~15 0'2 0.~5 0.3 Parapet Height/ Building He'lght Helix DT System Roofs < 50 EFFECTIVE WIND, AREA (A) MODULE & COMPONENT WEIGHTS (W) SYSTEM, Array Location Effective Wind Area (A) PART DT Chassis Weight (lbs.) 5.9 96 Cell liorm factor (17.6 ft' per panel) -DT", Corner 58.3 Leading Tray 2.7 -PT~- E/W Edge Link Tray 2.0 'PT N/S Edge, 115.6 Module (96,128, P) 41,56,51 'DT.,'Cdnter, 382.0 128 Cell Form factor (23.29 ft2 per panel) ;PT"6r~lir 75.2. DT, E/W Edge. 152.3 —bT;N/S-~dge~- 159.3 DT, Center 316.0 P-Series Form factor (22.22 ft2 per panel) DT, Corner— 71.8 g E d W, ge '145.3 J- DT, N/S Edge,,r,- 15 .9 PTO Corit6irrrr")~~, 301.5 zARRAY EDGE FACTORS (E) ei Jone'r. NIS Edge. EIW Edge . EA' 1.0 A; Effective Wind Area for- Element (ft2) An: 146rm~a~lized Wind Arei, & 1000 A L2 LB:Mihim'6m of 0.4~—hL br h; and cannot be less than 15ft. E: Arr6y Edg6 Factor. h: Mean roof height above'ground (ft.) ,1: Wi 'dt h -Of b6ildi fig on L ongest side (ft.) .yp: Pwapet height factor, L " W: W6ight'of Modble and Structure (lbs.) ee, 3 BALLAST DETERMINATION Jhe figy,res" tables, and equations in ASCE 7-10 are used as applicable to determine design forces on buildings and other structures.,. However, the values in ASCE 7-10 are not applicable to products like Helix. Insuchcases, ASC E 7-10 requires compliance with its section 26. 1.1 and wind tunnel testing. In order forthese tests to be applicable, the wind tunnel testing must include a model of a representative building the modules will be installed on, as well as accurate modeling of upstream turbulence caused by terrain roObhness. The, ~asi6' equation used to determine design wind forces in ASCE 7-10 is the velocity pressure equation: q_, .00256K,,K_,tKdV' (ASCE 7-10, Equation 30.3-1) To determine the'pressure, and therefore design loads, the qz determined in accordance with these methods is by a velocity pn~ssure coefficient, Cp. P = qCpypE In this equation, q incorporates the site-specific K variables, basic wind speed V, and parapet factor. Ih ord6r to determine ballast quantities needed to resist wind pressures, Wind Force (F) is determined by taking, the,windpressure over the module area: F = qCpypEA,,, 'Panel GCp values scale with building dimensioni and can be determined from Figure 1. These coefficients allow, for -the 14 d : etermination of the required product weight mandated by code. 7, ASCE 7-10,~gives the6quation for Kzaswell as a rational method to interpolate between exposure categories. Zeval 1Z /aeval K_, 2. geva) (ASCE 7-10, Table 30.3-1, Note 1) ASCE 7.10, 2.4.1 gives an ASID load factor of 0.6D + 0.6W. Solving !or.Dl we get D = W.',In other words, we need to provide a dead load that,equals the wind force to a . rriveat -a safe array weight. This can be achieved with a combination of weight provided by the module and ~system components, as well as cement ballast blocks. Combining the abov6 equations, the required dead load to resist wind loads becomes; D =.00256KKdV1Cp ypEAm (Equation 1) -Where:, Kd:' Direction6litv factor Ve 'ASC E 7- 10 wind zone (expressed in MPH, 3-second gust at 33', Exposure C) Velocity pressure coefficient from Figure 1 Cp: 'Parapet Factor yp: E: 'Array Edge Factor ;~m: Module Area, [Variable, see table on previous page] 4 'i - S-UNPOWEIr Page 8 SITE-SPECIFIC HELIX DT SAMPLE WliilD METHODOLOGY CALCULATION LROOF WIND Z57NE A, PANEL CATEGORY 1 (CORNER) Input PV PANEL& RACKING INFORMATION Panel Name SunPower 96-cell module Panel Length, 1,,,, = 61.4 in Panel Width, w,.I = 41.2 in e Panel Area, A,anal 17.S7 sf Tent Area, Ao;~, 35.14 sf Ground Coverage 'Ratio (GCR) 0.91 Panel Weight, w., b, 41 lb BUILDliG' GEOMETRY S u ilding Height, H 3 ft Parapet Height, hpt 5 ft Building Width on Longest Side, W 585 ft '~.Characteristic Building Length, LB 30.00 ft LB O."[HWI, not to exceed H or be less than 15 ft WIND LOAD CRITERIA. (PER ASCE 7-10 CHAPTERS 26 & 30) Code Section Basic Wind Speed*, V 110 mph 26.5.1 Exposure Category= C 26.7 Risk Cateioy* = . 11 1.5.1 'Note: Verifv th - at - sic Wind speed IV) used Is selected frorn the appropriate Figure 26.5.1 In ASCE 7-10 (k 9, or Q based on the Risk (occupancy Categounr) Velocity Pressure Coefficient, K, 0.982 30.3.1 4 -Topographic Factol~l K,, - 1 26.8.2 Directlonalkt~ Factor, Kd 0.85 26.6 Velocity Pressure, qh 0.00256KK,&V' 25.86 psf 30.3.2 BALLAST CALCULATION FOR A GIVEN HELIX DT TENT (PER SEAOC PV-2 2012 & WIND TUNNEL TEST DATA) ..'RoofZone=" A See wind design methodology ..-Panel Category= 1 Category 1 Exposed Comer *Ballast Block Weight 14 lb Anchor Type (Used if Required by Uplift Calc) OMG PowerGrip Plus' Anch;rCapkity=. 418 lbs; Maximum Allo wable Distributed Weight on . Roof I L 181 psf A- A trib = Panel x ntrib 58.33 sf - 0 . A~ 100 Ac A'~, 0 64.81 sf Edge Factor, VE 1.0 See wind design methodology Parapet Factor, Vp 1.08 See wind design methodology F, Nei i~essure ~oeffiicient, GcL 0.54 See wind design methodology Take Max YEypGO.,11cifiedwe a~d YEYPPCL,Zc.11 0.59 See wind design methodology Uplift Force from Wind, F.Flin 534 lb F = qh x GCL X YE x Vp x A,ent System Weight, w,, 100.6 lb Ballast Weight Required 434 lb 0.6D - 0.6Wup a 0 D,,., a Wu, - D,, Number of Blocks Required w/o Anchors 31 m Distributed Weight w/o Anchors Syste' 13.8 psf Anchors Required? No Anchors required if (w,, + wb.11ao) > wall_ Nu mber of Anchors Required 0 Number of Blocks Required w/ Anchors 31 System Distributed Weight wl Anchors 13.8 psf <= 18 psf OK SUMMARY OF DESIGN zone Panel category Gc, Fumlit (Ibs) 4e~ Ballast Required (lbs) #Blocks #Anchors System Distributed Weight A 1 0.54 534 434 31 0 13.8S 4 1 619.692.2015 1 HESSolar.com September 1, 2017 City of Carlsbad 1635 Faraday Ave. Rec, Carlsbad, CA 92008 Subject: HME Cailsbad - Letter of Authorization DEC 0 4 2017 CITY 0 2848 Whiptail Loop West, Carlsbad, CA 92010 BU/LDiN CAIRLSBAD APN: 209-120-021-00 G D/VI'SION ToWh6rn It May Concern. Home Energy Systiems, applicant, authorize Alliance Land Planning & Engineering, as nted by Elizabeth Shoemaker to act as an agent to sign for permits and processing .~Teprese -documents in the City of Carlsbad on our behalf for the project known as HME Carlsbad A'Io6ted at 2848 Whiptail Loop West, Carlsbad, CA 92010. understand that Home Energy Systems, Inc. named on the application is the financially responsible party for additional collections, charges and refunds. - S ~i e iy, inc 4a :(Signatu e) ~Wenjie Chen _Pr Name '~ddiess:~ Home Energy Systems 59~6 Fairmount Avenue, Suite 105 S an Diego, CA 92120 Aofie': (61.9) 692-2015 4X 5 .5980~F6ir'rnount Avenue # 1051 Son Diego, CA 92108 CSL 800657