Press Alt + R to read the document text or Alt + P to download or print.
This document contains no pages.
HomeMy WebLinkAboutAPPROVED,Structural - 121003_Gaunt, JohnRE:CERTIFICATION LETTER
Project Address: GAUNT RESIDENCE
7703 PENNY LANE
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 = 157 mph, Exposure Category C, Partially/Fully Enclosed Method
- Ground Snow Load = 0 psf
- ROOF 1 - 4 : 2 x 6 @ 24" OC, Roof DL = 8 psf, Roof LL/SL = 20 psf (Non-PV), Roof LL/SL = 0 psf (PV)
To Whom It May Concern,
Sincerely,
January 31, 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 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 | PAGE 1/5
ROOF 1 - 4 20°OK IEBC 5% IMPACT CHECK
MOUNTING PLANE
ROOF 1 - 4
STANDOFF HARDWARE EVALUATION FOR WIND UPLIFT
UPLIFT DCR
81.7%
RESULTS SUMMARYBARUN CORP
GAUNT RESIDENCE, 7703 PENNY LANE, 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 | PAGE 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
OSB Sheathing 2.50 psf
Framing Weight 1.15 psf
Vaulted ceiling No 0.00 psf
Miscellaneous 1.50 psf
Total Roof Dead Load R-DL =8.15 psf
EXPRESSION
Roof Live Load Lo 20.00 psf
Member Tributary Area At < 200 sf
ROOF 1 - 4 Pitch 5/12 or 20°
Trubutary Area Reduction R1 1.00
Slope Roof Reduction R2 0.98
Reduced Roof Live Load Lr = Lo (R1) (R2) =19.50 psf
Ground Snow Load pg =0.00
Effective Roof Slope 20°
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 =0.83
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 6 @ 24 in. O.C.
VALUE
Composite Shingle Roof
SNOW LOAD
BARUN CORP ROOF 1 - 4
LOAD CALCULATION
GAUNT RESIDENCE, 7703 PENNY LANE, 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 | PAGE 3/5
EXISTING
8.15 psf
19.50 psf
0.00 psf
EXISTING
22.12 psf
7.08 psf
22.12 psf
-44.00%OK
2018
GAUNT RESIDENCE, 7703 PENNY LANE, FORT PIERCE, FL 34951
Roof Live Load (Lr) =0.00
11.15
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 =12.38
(DL + SL)/Cd =9.69
Maximum Gravity Load =12.38
0.00
WITH PV PANEL
WITH PV PANEL
Roof Dead Load (DL) =
BARUN CORP IEBC 5% IMPACT CHECK
ROOF 1 - 4
Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com | PAGE 4/5
157 20°
II Gable
C 0.85
20 1
3.00 0.90
982.50 lbs
4.00
3.30
4.00
2.65
3.00
1.65
ROOF ZONE GCp (-) UPLIFT
1 & 2e -2.00
2n - 3e -2.96
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 =48.37 psf
a (ft) =4.50
BARUN CORP WIND UPLIFT CALCULATION
ROOF 1 - 4
GAUNT RESIDENCE, 7703 PENNY LANE, FORT PIERCE, FL 34951
Ultimate Wind Speed (mph) =Roof Pitch (deg.) =
SITE INFORMATION
Max. Y - Spacing (ft) (Zone 2n - 3e)10.60
Max. X - Spacing (ft) (Zone 3r)Effective Wind Area (ft2)
Solar Array Pressure Eq. Factor (γa) =0.60
Hardware Type :SFM INFINITY \ ROCKIT MICRORAIL
Allowable Load =S. Pine, 2.5" lag embedment
Max. X - Spacing (ft) (Zone 1 & 2e)Effective Wind Area (ft2)
Max. Y - Spacing (ft) (Zone 1 & 2e)13.20
Max. X - Spacing (ft) (Zone 2n - 3e)Effective Wind Area (ft2)
Max. Y - Spacing (ft) (Zone 3r)4.95
-92.35 457.12
UPLIFT PRESSURE (psf) PULLOUT FORCE (lbs)
-50.55 667.29
-75.73 802.72
* 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 | PAGE 5/5