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HomeMy WebLinkAboutStructural Cals BARUN CORP January 31,2022 RE: CERTIFICATION LETTER Project Address: ROOTE RESIDENCE 8803 BROOKLINE AVENUE FORT PIERCE, FL 34951 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=156 mph, Exposure Category C, Partially/Fully Enclosed Method -Ground Snow Load=0 psf -ROOF 1 &2:2 x 4 @ 24"OC, Roof DL=6 psf, Roof LL/SL=20 psf(Non-PV), Roof LL/SL=0 psf(PV) To Whom It May Concern, 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. 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. Sincerely, S.M.Mehdi o,a Zomorodian"m""''"'""'. Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com I www.barun-corp.com I PAGE 1/5 BARUN CORP 11111116LESULlTS SUMMARY ROOTE RESIDENCE,8803 BROOKLINE AVENUE, FORT PIERCE, FL 34951 MOUNTING PLANE ROOF PITCH(deg.) RESULT GOVERNING ANALYSIS ROOF 1&2 18' IEBC 5% IMPACT CHECK MOUNTING PLANE UPLIFT DCR ROOF 1&2 91.3% Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com www.barun-corp.com I PAGE 2/5 LOAD CALCULATION BARUN CORP ROOF 1 & 2 ROOTE RESIDENCE,8803 BROOKLINE AVENUE,FORT PIERCE,FL 34951 MIMI PV SYSTEM DEAD LOAD • PV module weight 2.50 psf Hardware assembly weight 0.50 psf Total PV System Dead Load PV-DL= 3.00 psf Ills Existing Roofing Material Standing Seam Roof 1 Layer(s) 1.50 psf Underlayment 0.50 psf Plywood Sheathing 1.50 psf Framing Weight 2 x 4 @ 24 in.O.C. 0.73 psf Vaulted ceiling No 0.00 psf Miscellaneous 1.50 psf Total Roof Dead Load R-DL= 5.73 psf REDUCED ROOF LIVE LOAD • Roof Live Load Lo 20.00 psf Member Tributary Area At <200 sf ROOF 1&2 Pitch 4/12 or 18' Trubutary Area Reduction Rl 1.00 Slope Roof Reduction Rz 1.00 Reduced Roof Live Load Lr=Lo(Rj(RZ)= 20.00 psf SNOW LOAD VALUE Ground Snow Load pg= 0.00 Effective Roof Slope 18' 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 SLOPED ROOF SNOW LOAD ON ROOF(Non-Slippery Surfaces) VALUE Roof Slope Factor Cs-roof= 0•87 Sloped Roof Snow Load on Roof I Ps-roof= 0.00 psf SLOPED ROOF SNOW LOAD ON PV PANEL(Unobstructed Slippery Surfaces) VALUE Roof Slope Factor CS-PV= 0.87 Sloped Roof Snow Load on PV Panel ps_p = 0.00 psf Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com www.barun-corp.com I PAGE 3/5 I IEBC 5% IMPACT CHECK BARUN CORP ROOF 1 & 2 ROOTE RESIDENCE,8803 BROOKLINE AVENUE,FORT PIERCE,FL 34951 Roof Dead Load(DL)= 5.73 8.73 psf Roof Live Load(Lr)= 20.00 0.00 psf Roof Snow Load(SL)= 0.00 0.00 psf I EXISTING WITH PV PANEL (DL+Lr)/Cd= 20.58 9.70 psf (DL+SL)/Cd= 4.98 7.59 psf Maximum Gravity Load= 20.58 9.70 psf Load Increase(%)_1 -52.88% OK IEBC Provision:1 2018 The requirements of section 806.2 of 2018 IEBC are met and the structure is permitted to remain unaltered. Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@baron-corp.com I www.barun-corp.com I PAGE 4/5 -11111 WIND UPLIFT CALCULATIONg6,__ BARUN CORP ROOF 1 & 2 ROOTE RESIDENCE,8803 BROOKLINE AVENUE,FORT PIERCE,FL 34951 Ultimate Wind Speed(mph)= 156 Roof Pitch(deg.)= 18' Risk Category= II Roof Type= Gable Exposure Category= C Kd= 0.85 Mean Roof Height(ft)= 15 Kzt= 1 Solar Array Dead Load(psf)= 3.00 Kz= 0.85 DESIGN CALCULATIONS Wind Velocity Press.(qh)=0.00256*Kz*Kzt*Kd*Ke*V2= 44.95 psf a(ft)= 4.50 Array Edge Factor(yE)= 1.50 Solar Array Pressure Eq.Factor(ya)= 0.60 Hardware Type: S-5!:PROTEA Allowable Load= 300.00 Ibs Max.X-Spacing(ft)(Zone 1&2e) 1.00 Effective Wind Area(ft) Max.Y-Spacing(ft)(Zone 1&2e) 5.70 5.70 Max.X-Spacing(ft)(Zone 2n-3e) 1.00 Effective Wind Area(ft) Max.Y-Spacing(ft)(Zone 2n-3e) 3.85 3.85 Max.X-Spacing(ft)(Zone 3r) 1.00 Effective Wind Area(ft) Max.Y-Spacing(ft)(Zone 3r) 2.85 2.85 ROOFZONE GCIP(-)UPLIFT UPLIFT PRESSURE(psf) PULLOUT •• 1&2e -2.00 -46.84 266.97 2n-3e -3.00 -71.11 273.78 3r -3.60 -85.68 244.18 *Wind calculation is based on ASCE 7-16,29.4-C&C,LC#7:0.61)+0.6W used. Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com I www.barun-corp.com I PAGE 5/5