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HomeMy WebLinkAboutAPPROVED REVISION, Structural - 123869_ Nelligan, James_REV1RE:CERTIFICATION LETTER Project Address: JAMES NELLIGAN RESIDENCE 5400 KILLARNEY 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 = 160 mph, Exposure Category C, Partially/Fully Enclosed Method - Ground Snow Load = 0 psf - Roof 1-5 : 2 x 4 @ 24" OC, Roof DL = 7 psf, Roof LL/SL = 19 psf (Non-PV), Roof LL/SL = 0 psf (PV) To Whom It May Concern, Sincerely, March 9, 2022 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 job site survey of the existing framing system of the address indicated above was performed . All structural evaluation is based on the site inspection observations and 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 1/5 Roof 1-5 24°OK IEBC IMPACT CHECK MOUNTING PLANE Roof 1-5 STANDOFF HARDWARE EVALUATION FOR WIND UPLIFT UPLIFT DCR 67.3% RESULTS SUMMARYBARUN CORP JAMES NELLIGAN RESIDENCE, 5400 KILLARNEY AVENUE, FORT PIERCE, FL 34951 RESULTMOUNTING PLANE ROOF PITCH (deg.)GOVERNING ANALYSIS MOUNTING PLANE STRUCTURAL EVALUATION Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com 2/5 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 Layer(s)2.50 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 =6.73 psf EXPRESSION Roof Live Load Lo 20.00 psf Member Tributary Area At < 200 sf Roof 1-5 Pitch 6/12 or 24° Trubutary Area Reduction R1 1.00 Slope Roof Reduction R2 0.93 Reduced Roof Live Load Lr = Lo (R1) (R2) =18.50 psf Ground Snow Load pg =0.00 Effective Roof Slope 24° 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 =1.00 Sloped Roof Snow Load on Roof ps-roof =0.00 psf Roof Slope Factor Cs-pv =0.77 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 Composite Shingle Roof SNOW LOAD BARUN CORP Roof 1-5 LOAD CALCULATION JAMES NELLIGAN RESIDENCE, 5400 KILLARNEY AVENUE, FORT PIERCE, FL 34951 VALUE PV SYSTEM DEAD LOAD (PV-DL) Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com 3/5 EXISTING 6.73 psf 18.50 psf 0.00 psf EXISTING 20.18 psf 5.85 psf 20.18 psf -46.44%OK 2018 JAMES NELLIGAN RESIDENCE, 5400 KILLARNEY AVENUE, FORT PIERCE, FL 34951 Roof Live Load (Lr) =0.00 9.73 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 =10.81 (DL + SL)/Cd =8.46 Maximum Gravity Load =10.81 0.00 WITH PV PANEL WITH PV PANEL Roof Dead Load (DL) = BARUN CORP IEBC IMPACT CHECK Roof 1-5 Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com 4/5 160 24° II Hip C 0.85 20 1 3.00 0.90 982.50 lbs 4.00 3.30 4.00 3.30 4.00 3.30 ROOF ZONE GCp (-) UPLIFT 1 -1.33 2e & 2r -1.91 3 -1.91 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 =50.24 psf a (ft) =4.50 BARUN CORP WIND UPLIFT CALCULATION Roof 1-5 JAMES NELLIGAN RESIDENCE, 5400 KILLARNEY AVENUE, FORT PIERCE, FL 34951 Ultimate Wind Speed (mph) =Roof Pitch (deg.) = SITE INFORMATION Max. Y - Spacing (ft) (Zone 2e & 2r)13.20 Max. X - Spacing (ft) (Zone 3)Effective Wind Area (ft2) Solar Array Pressure Eq. Factor (γa) =0.60 Allowable Load =S. Pine, 2.5" lag embedment Max. X - Spacing (ft) (Zone 1)Effective Wind Area (ft2) Max. Y - Spacing (ft) (Zone 1)13.20 Max. X - Spacing (ft) (Zone 2e & 2r)Effective Wind Area (ft2) Max. Y - Spacing (ft) (Zone 3)13.20 -50.10 661.33 UPLIFT PRESSURE (psf) PULLOUT FORCE (lbs) -34.37 453.74 -50.10 661.33 * 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 5/5 PLAN FIGURE 30.3-2G Components and Cladding [h ≤60 ft (h ≤18.3 m)]: External Pressure Coefficients, (GCp ), for Enclosed and Partially Enclosed Buildings—Hip Roofs, 20°<θ ≤27° (Roof and Overhang)