HomeMy WebLinkAboutPV STRUCTURAL EVAL WORKSHEET (Fillable) BUILDING DIVISION – DPW
COUNTY OF HAWAI‘I – 101 Pauahi Street, Suite 7 – Hilo, Hawai‘i 96720 Hilo Office (808) 961 -8331 • Fax (808) 961 -8410 Kona Office (808) 323 -4720 • Fax (808) 327 -3509 STRUCTURAL EVALUATION WORKSHEET This worksheet , to be completed by the applicant, is required for residential PV system application s. If the drawings are prepared and stamped by a Hawai‘i registered professional architect or structural engineer, then the worksheet is not required. The installation of a roof mounted PV system can be complex and it is recommended (but not required) that the structure be reviewed by a registered professional a rchitect or s tructural e ngineer . STEP 1: Structural Evaluation of a Supporting Building Is the array to be roof mounted on a permitted structure YES NO
If “YES” insert the PERMIT NUMBER
YE AR BUILT If “NO” STOP. A building per mit for the structure is required. E ffective Wind Speed mph (To determine Effective Wind Sp eed view the m ap at: http://media3.hawaii.gov/media/dags/web/windmaps/hawaii -county -wind -maps.pdf , information on page 58 to 84 (PDF, 22 MB )) Wind Exposure Category (ref. R301.2.1.4) (To view R301.2.1.4 of the IRC go to: http://publicecodes.cyberregs.com/icod/irc/2012/icod_irc_2012_3_sec001_par009.htm
To view the map, go to: http://media3.hawaii.gov/media /dags/web/windmaps/hawaii -county -wind -maps.pdf (PDF , 22 MB))
Seismic Design Category (ref. Figure 301.2(2)) (To view Figure 301.2(2) go to : h ttp://earthquake.usgs.gov/hazards/design maps/pdfs/?code=IRC&edition=2006+%26+2009 ) Roof Information: Roof construction Rafters Site Built Trusses Pre -Engineered Trusses Open Beam Other
Does the roof have a single covering?
YE S NO 1. Prov ide method and type of weather-proofing roof penetrations . 2. D escribe rafter, truss system, or open beam roof framing a. Size x inches. b. Spacing inches. c. Maximum unsupported span: feet, inches. d. Are the rafter spaces acceptable? (see Gui delines for Permitting a Residential PV System, Span Tables) YES NO e. If “YES” complete Step 2. If “NO” a dditional information is required to determine the structural integrity of the dwelling. A) Attach the completed stru ctural evaluation worksheet s for review. B) Include two sets of drawings of site plans stamped by an electrical engineer in accordance with HRS section 444 1 , and product submittals as required. C) Complete the building permit worksheet, and electrical permit app lication . 1 Under the Hawai‘i Revised Statut es section 444 permits are issued to Hawai‘i State licensed building, elec trical, or photovoltaic contractors. Rev. 12/04/12 A
STEP 2: Structural Evaluation Worksheet of a Residential PV Array Mounting System If any of the answers are “NO” STOP. The installation will require additional information. Mounting System Information (See Guidelines for Permitting a Residential PV System, Exhibit A): 1. Is the mounting structure for a pre approved County of Hawai ‘i or an ICC pre approved engineered product designed to mount PV modules? YES NO If “YES” continue to step 2.
If “NO” STOP. The syste m must be submitted with USA testing data to determine
suitability for seismic and wind zones within the County of Hawai‘i.
2. For manufactured mounting systems, fill out information on the mounting system below: a. Mounting system M anufacturer:
M ounting system Product name:
Mounting system Model #
Mounting system Listing # (e.g., ICC)
b. D istance between rails_______________________________ c. Maximum panel overhang___________________________ d. Total weight of PV modules, and rails lbs. e. Total number of attachment points . f. Weight per attachment point (d÷e) lbs. g. Maximum spacing between attachment points on rail (see product manual for maximum spacing allowed based on maxim um design wi nd speed). h. Total surface area of PV modules (sq ft) ft 2 i. Distributed weight of PV module on roof (d÷h) lbs/ft 2 If distributed weight of the PV system is greater than 5lbs/ft 2 then structural improvements are required for this installation. Please submit a worksheet with each set of plans. I HEREBY ACKNOWLEDGE THAT THE INFORMATION GIVEN ON THIS FORM IS CORRECT AND AGREE TO COMPLY WITH ALL COUNTY AND STATE LAWS. PERMITTEE’S SIGNATURE D ATE TMK (3) B