HomeMy WebLinkAboutCERTIFICATION LETTER1/5
RE:CERTIFICATION LETTER
Project Address: PATRICIA COLEMAN RESIDENCE
7704 PENNY LANE
FORT PIERCE, FL 34951
Design Criteria:
- Applicable Codes = 2020 FLBC/FLEBC 7th Edition, 2020 FLRC 7th Edition, 2018 IEBC/IBC/IRC, 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 1-4 : 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,
February 5, 2022
Based on this evaluation, I certify that the alteration to the existing structure by installation of the PV system, with blocking upgrades in
Roof 4 (Hip), 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
2/5
Roof 1-4 22°OK IEBC 5% IMPACT CHECK
MOUNTING PLANE
Roof 1-4
RESULTS SUMMARYBARUN CORP
PATRICIA COLEMAN RESIDENCE, 7704 PENNY LANE, FORT PIERCE, FL 34951
RESULTMOUNTING PLANE ROOF PITCH
(deg.)GOVERNING ANALYSIS
MOUNTING PLANE STRUCTURAL EVALUATION
STANDOFF HARDWARE EVALUATION FOR WIND UPLIFT
UPLIFT DCR
63.2%
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 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 1-4 Pitch 5/12 or 22°
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 22°
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 =0.80
Sloped Roof Snow Load on PV Panel ps-pv =0.00 psf
REDUCED ROOF LIVE LOAD (Lr)
VALUE
MATERIAL/ROOFING DETAILS VALUEROOF DEAD LOAD (R-DL)
2 x 4 @ 24 in. O.C.
VALUE
Comp Roof
SNOW LOAD
BARUN CORP Roof 1-4
LOAD CALCULATION
PATRICIA COLEMAN RESIDENCE, 7704 PENNY LANE, FORT PIERCE, FL 34951
VALUE
PV SYSTEM DEAD LOAD (PV-DL)
SLOPED ROOF SNOW LOAD ON PV PANEL (Unobstructed Slippery Surfaces)
SLOPED ROOF SNOW LOAD ON ROOF (Non-Slippery Surfaces)
VALUE
VALUE
Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com
4/5
EXISTING
6.73 psf
19.00 psf
0.00 psf
EXISTING
20.58 psf
5.85 psf
20.58 psf
-47.48%OK
2018
BARUN CORP IEBC 5% IMPACT CHECK
Roof 1-4
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) =9.73
PATRICIA COLEMAN RESIDENCE, 7704 PENNY LANE, FORT PIERCE, FL 34951
Roof Live Load (Lr) =0.00
Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com
5/5
160 22°
II Hip
C 0.85
15 1
3.00 0.85
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
Max. Y - Spacing (ft) (Zone 3)13.20
-47.04 620.86
UPLIFT PRESSURE (psf) PULLOUT FORCE (lbs)
-32.23 425.48
-47.04 620.86
* Wind calculation is based on ASCE 7-16, 29.4 - C&C, LC#7: 0.6D + 0.6W used.
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)
BARUN CORP WIND UPLIFT CALCULATION
Roof 1-4
PATRICIA COLEMAN RESIDENCE, 7704 PENNY LANE, FORT PIERCE, FL 34951
Ultimate Wind Speed (mph) =Roof Pitch (deg.) =
SITE INFORMATION
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 =47.29 psf
a (ft) =3.00
Barun Corp | Design and Engineering | 610.202.4506 | chrisk@barun-corp.com | www.barun-corp.com
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)
V004(E) SHORTEST BOX TRUSS (BLOCKINGREQUIRED FOR ALL LOCATIONS WHERELAGGING OCCURS)(N) SIMPSON A34 CLIPS (2 PER BLOCK)W/ (8) (N) 8d (0.131") X 1-1/2" NAILS PER CLIP(E) JACK TRUSS OR RAFTER(BLOCKING NOT REQUIRED DOWN HERE)(N) STANDOFF SHALL LAGDIRECTLY INTO (N) BLOCKING2'Scale: 1/2" = 1'D1(N) 2x4 DF#2 OR SPF#2 BLOCKINGNEW BLOCKING SIDE VIEWNEW BLOCKING SIDE VIEW(E) RAFTER(N) BLOCKING(E) TRUSSS1(E) LBWSCHEMATIC DEPICTION OF MP THAT REQUIRES UPGRADESNTSINSTALLATION NOTES:1. CUT (N) BLOCKING TO FIT TIGHTBETWEEN (E) TRUSSES ANDKEEP FLUSH TO ROOFSHEATHING. ENSURE THEREARE NO GAPS BETWEENMEMBERS.2. INSTALL (N) BLOCKING WITHTWO (N) A34 CLIPS, ONE ATEACH END OF (N) BLOCKING.3. NAIL (N) A34 CLIPS TO (E)TRUSSES WITH (8) (N) 8D (0.131")X 1.5" NAILS, FILLING ALL HOLES.ENSURE ALL NAILS ARELOCATED AWAY FROM EDGE OFMEMBERS TO AVOID SPLITTINGWOOD.·INSTALL (N) BLOCKING ONLYBELOW STANDOFF LOCATIONS.BLOCKING UPGRADESU 10MODULES:MOUNTING SYSTEM:INVERTER:JOB NUMBER:DESCRIPTION:PAGE NAME:PREMISE OWNER:DESIGNED BY:CHECKED BY:APPROVED BY:CONFIDENTIAL - THE INFORMATION HEREINCONTAINED SHALL NOT BE USED FOR THEBENEFIT OF ANYONE EXCEPT BARUN CORP,NOR SHALL IT BE DISCLOSED IN WHOLEOR IN PART TO OTHERS OUTSIDE THERECIPIENT'S ORGANIZATION, EXCEPT INCONNECTION WITH THE SALE AND USE OFTHE RESPECTIVE BARUN CORPEQUIPMENT, WITHOUT THE WRITTENPERMISSION OF BARUN CORP.STRUCTURAL UPGRADESSHEET NUMBER:602 N Atwater Dr.Malvern, PA 19355Phone: (610) 202-4506website: www.barun-corp.com