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HomeMy WebLinkAboutCERTIFICATION LETTER1/5 RE:CERTIFICATION LETTER Project Address: AGOSTINELLI RESIDENCE 5100 PINETREE DRIVE FORT PIERCE, FL 34982 Design Criteria: - Applicable Codes = 2020 FLBC/FLEBC 7th Edition, 2020 FLRC 7th Edition, 2018 IEBC/IBC, ASCE 7-16 and 2018 NDS - Risk Category = II - Wind Speed = 152 mph, Exposure Category C, Partially/Fully Enclosed Method - Ground Snow Load = 0 psf - ROOF 1 : 2 x 4 @ 24" OC, Roof DL = 6 psf, Roof LL/SL = 19 psf (Non-PV), Roof LL/SL = 0 psf (PV) To Whom It May Concern, Sincerely, January 10, 2022 Yuri Yurianto, S.E., P.E. Based on this evaluation, I certify that the alteration to the existing structure by installation of the PV system meets the prescriptive compliance requirements of the applicable existing building and/or new building provisions adopted/referenced above. Additionally, the PV module assembly including attachment hardware has been reviewed to be in accordance with the manufacturer’s specifications and to meet and/or exceed the requirements set forth by the referenced codes. A structural evaluation of loading was conducted for the above address based on the design criteria listed above. Existing roof structural framing has been reviewed for additional loading due to installation of PV Solar System on the roof. The structural review applies to the sections of roof that is directly supporting the solar PV system. Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com By Yuri at 7:51:58 AM, 1/10/2022 2/5 ROOF 1 OK ROOF ROOF 1 STANDOFF HARDWARE EVALUATION FOR WIND UPLIFT UPLIFT DCR 61.3% RESULTS SUMMARYBARUN CORP AGOSTINELLI RESIDENCE, 5100 PINETREE DRIVE, FORT PIERCE, FL 34982 MOUNTING PLANE STRUCTURAL EVALUATION (BASED ON IEBC 5% IMPACT CHECK) RESULTROOFROOF PITCH (deg.) 23° Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com 3/5 PV module weight 2.50 psf Hardware assembly weight 0.50 psf Total PV System Dead Load PV-DL =3.00 psf Existing Roofing Material 1 layers 1.50 psf Underlayment 0.50 psf Plywood Sheathing 1.50 psf Framing Weight 0.73 psf Vaulted ceiling No 0.00 psf Miscellaneous 1.50 psf Total Roof Dead Load R-DL =5.73 psf EXPRESSION Roof Live Load Lo 20.00 psf Member Tributary Area At < 200 sf ROOF 1 Pitch 5/12 or 23° Trubutary Area Reduction R1 1.00 Slope Roof Reduction R2 0.95 Reduced Roof Live Load Lr = Lo (R1) (R2) =19.00 psf Ground Snow Load pg =0.00 Effective Roof Slope 23° Snow Importance Factor Is =1.00 Snow Exposure Factor Ce =1.00 Snow Thermal Factor Ct =1.10 Minimum Flat Roof Snow Load pf-min =0.00 Flat Roof Snow Load pf =0.00 psf Roof Slope Factor Cs-roof =0.78 Sloped Roof Snow Load on Roof ps-roof =0.00 psf Roof Slope Factor Cs-pv =0.78 Sloped Roof Snow Load on PV Panel ps-pv =0.00 psf VALUE VALUESLOPED ROOF SNOW LOAD ON PV PANEL (Unobstructed Slippery Surfaces) SLOPED ROOF SNOW LOAD ON ROOF (Non-Slippery Surfaces) REDUCED ROOF LIVE LOAD (Lr) VALUE MATERIAL/ROOFING DETAILS VALUEROOF DEAD LOAD (R-DL) 2 x 4 @ 24 in. O.C. VALUE Trap Metal Roof SNOW LOAD BARUN CORP ROOF 1 LOAD CALCULATION AGOSTINELLI RESIDENCE, 5100 PINETREE DRIVE, FORT PIERCE, FL 34982 VALUE PV SYSTEM DEAD LOAD (PV-DL) Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com 4/5 EXISTING 5.73 psf 19.00 psf 0.00 psf EXISTING 19.78 psf 4.98 psf 19.78 psf -50.97%OK 2018 AGOSTINELLI RESIDENCE, 5100 PINETREE DRIVE, FORT PIERCE, FL 34982 Roof Live Load (Lr) =0.00 8.73 Roof Snow Load (SL) = The requirements of section 806.2 of 2018 IEBC are met and the structure is permitted to remain unaltered. IEBC Provision : Load Increase (%) = (DL + Lr)/Cd =9.70 (DL + SL)/Cd =7.59 Maximum Gravity Load =9.70 0.00 WITH PV PANEL WITH PV PANEL Roof Dead Load (DL) = BARUN CORP IEBC 5% IMPACT CHECK ROOF 1 Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com 5/5 152 23° II Gable C 0.85 15 1 3.00 0.85 300.00 lbs 1.33 1.70 1.33 1.70 1.33 1.70 ROOF ZONE GCp (-) UPLIFT 1 & 2e -1.50 2n - 3e -2.50 3r -3.60 Risk Category =Roof Type = Array Edge Factor (γE) =1.50 Exposure Category =Kd = Mean Roof Height (ft) =Kzt = Solar Array Dead Load (psf) =Kz = DESIGN CALCULATIONS Wind Velocity Press. (qh) = 0.00256*Kz*Kzt*Kd*Ke*V2 =42.68 psf a (ft) =4.50 BARUN CORP WIND UPLIFT CALCULATION ROOF 1 AGOSTINELLI RESIDENCE, 5100 PINETREE DRIVE, FORT PIERCE, FL 34982 Ultimate Wind Speed (mph) =Roof Pitch (deg.) = SITE INFORMATION Max. Y - Spacing (ft) (Zone 2n - 3e)2.26 Max. X - Spacing (ft) (Zone 3r)Effective Wind Area (ft2) Solar Array Pressure Eq. Factor (γa) =0.60 Hardware Type :S-5-N/S-5-N MINI CLAMP Allowable Load = Max. X - Spacing (ft) (Zone 1 & 2e)Effective Wind Area (ft2) Max. Y - Spacing (ft) (Zone 1 & 2e)2.26 Max. X - Spacing (ft) (Zone 2n - 3e)Effective Wind Area (ft2) Max. Y - Spacing (ft) (Zone 3r)2.26 -81.31 183.84 UPLIFT PRESSURE (psf) PULLOUT FORCE (lbs) -32.91 74.41 -55.96 126.52 * Wind calculation is based on ASCE 7-16, 29.4 - C&C, LC#7: 0.6D + 0.6W used. Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com