HomeMy WebLinkAboutAPPROVED Evaluation Report_Off-Ridge Roof VentThis item has been electronically signed and sealed by
James L. Buckner, P.E., on this date using a Digital Signature.
Printed copies of this document are not considered signed
and sealed, and the signature must be verified on any
electronic copies.
2020.09.25 14:33:30 -04'00'
CBUCK, Inc. dba CBUCK Engineering
Phone: (561) 491-9927 · Email: cbuck@cbuckinc.net · Website: www.cbuckinc.net
Business: 1374 Community Dr., Jupiter, FL 33458 · Corp/Mailing: 2637 E. Atlantic Blvd, #34069, Pompano Beach, FL 33062
CBUCK, Inc. Certificate of Authorization #8064
CBUCK Engineering
Specialty Structural Engineering
Evaluation Report
FLAMCO “Off-Ridge Vent ”
Roof Vent
Manufacturer:
Florida Metal Products, Inc.
6940 Stuart Avenue
Jacksonville, FL 32254
for
Florida Product Approval
# FL 21580.1 R2
Florida Building Code 7th Edition (2020)
Method: 2 - B
Category: Roofing
Sub - Category: Roofing Accessories that are an Integral
Part of the Roofing System
Product Name: “Off-Ridge Vent”
Product Description: Roof Vent
Attached To: Wood Deck
Prepared by:
James L. Buckner, P.E., SECB
Florida Professional Engineer # 31242
Florida Evaluation ANE ID: 1916
Project Manager: Diana Galloway
Report No. Report No. 20-244- ORV-ER
(Revises 17-185-ORV-ER, FL 21580.1)
Date: 09 / 25 / 20
Contents:
Evaluation Report Pages 1 – 9
FL #: FL 21580.1 R2
Date: 09 / 25 / 20
Report No.: 20-244-ORV-ER
Page 2 of 5
CBUCK, Inc. Certificate of Authorization #8064
CBUCK Engineering
Specialty Structural Engineering
1.0 Manufacturer: Florida Metal Products, Inc. dba FLAMCO
6940 Stuart Avenue
Jacksonville, Florida 32254
(800) 634-8400
http://flamco.com
2.0 Manufacturing Plant: Jacksonville, Florida
3.0 Product:
3.1 Product Name: “Off-Ridge Vent”
3.2 Product Description: Roof Vent
4.0 Evaluation Scope:
4.1 Compliance with the following
Florida Building Code 7th Edition (2020)
4.2 Evaluation Method:
Florida Product Approval Rule 61G20-3.005 (2) (b)
4.3 Evaluation Classification:
Category: Roofing
Sub Category: Roofing Accessories that are an Integral part of the Roofing System
4.4 Properties Evaluated
Structural (Wind Resistance) Properties
4.5 Limits of Evaluation:
This product assembly evaluation is limited to compliance with section 4.1 to section 4.4 of this
report.
5.0 Evaluated Uses:
FLAMCO “Off-Ridge Vent” is used as a roof ventilator.
6.0 Product Assembly Description:
6.1 General:
The FLAMCO “Off-Ridge Vents” are low profile, off-ridge roof vent for pitched roofs fabricated from
26 gauge, G-90 primed, galvanized steel with a galvanized steel mesh covering mechanically
attached to Plywood Deck.
7.0 General Assembly as Evaluated:
Refer to section 15.0 of this report for product assembly components/materials & standards.
8.0 Support System:
(Design of support system is outside the scope of this evaluation.)
8.1 Type: Wood Deck
8.2 Description: 15/32” (min.) or greater plywood, or
Wood plank deck (based on minimum density/specific gravity of 0.42)
9.0 Slope:
Minimum slope shall be 2:12. (and in compliance with FBC Chapter 15 based on the type of roof covering,
applicable code sections and in accordance with manufacturer’s recommendations.)
FL #: FL 21580.1 R2
Date: 09 / 25 / 20
Report No.: 20-244-ORV-ER
Page 3 of 5
CBUCK, Inc. Certificate of Authorization #8064
CBUCK Engineering
Specialty Structural Engineering
10.0 Performance:
10.1 Wind Resistance:
Table A
Allowable Loads
Design Uplift Pressure -46 PSF
Notes:
1. Allowable design pressure(s) for allowable stress design (ASD) with a margin of safety of 2 to 1.
11.0 Performance Standard:
The following test protocols were performed to demonstrate compliance with the intent of the code:
11.1 ASTM E330-02 – Standard Test Method for Structural Performance of Exterior Windows, Curtain
Walls, and Doors and by Uniform Static Air Pressure Difference
12.0 Code Compliance:
12.1 The product assembly described herein has demonstrated compliance with the Florida Building Code
7th Edition (2020) Section 1708.2.
13.0 Limitations and Conditions of Use:
13.1 Design of support system is outside the scope of this report. Support shall be structural framing
members complying with the code and shall be designed by others.
13.2 Scope of “Limitations and Conditions of Use” for this evaluation:
This evaluation report for “State Approval” contains technical documentation, specifications and
installation method(s) which include “Limitations and Conditions of Use” throughout the report in
accordance with Rule 61G20-3.005. Per Rule 61G20-3.004, the Florida Building Commission is the
authority to approve products under “State Approval”.
13.3 Option for application outside “Limitations and Conditions of Use”
Rule 61G20-3.005(1)(e) allows engineering analysis for “project specific approval by the local
authorities having jurisdiction in accordance with the alternate methods and materials authorized in
the Code”. Any modification of the product as evaluated in this report and approved by the Florida
Building Commission is outside the scope of this evaluation and will be the responsibility of others.
13.4 This report is a building code product evaluation per FLPE rule (FAC) 61G15-36 to comply with Florida
product approval rule (FAC) 61G20-3. This evaluation report is part of the Florida Building Commission
approval for the listed code related criteria. This report by James Buckner, P.E. and CBUCK Engineering
is not a design certification of code compliance construction submittal documentation, per FBC section
107, for any individual structure, site specific or permit design.
13.5 Structural loads shall comply with the design provisions of the FBC 7th Edition (2020), Chapter 16, Section
1609.
13.6 All metal components and fasteners shall be corrosion resistant in accordance with FBC, including but
limited to Sections 1504.3.2, 1506.6 and 1507.4.4.
13.7 Refer to applicable building code section for ventilation requirements.
13.8 Fire Classification is outside the scope of Rule 61G20-3, and is therefore not included in this evaluation.
13.9 This report does not evaluate the use of this product assembly as described in this report for use in
the High Velocity Hurricane Zone code section. (Dade & Broward Counties)
14.0 Quality Assurance:
The manufacturer has demonstrated compliance of products in accordance with the Florida
Building Code and Rule 61G20-3.005 (3) for manufacturing under a quality assurance program
audited by an approved quality assurance entity through Keystone Certifications, Inc., (FBC
Organization #QUA ID:1824).
FL #: FL 21580.1 R2
Date: 09 / 25 / 20
Report No.: 20-244-ORV-ER
Page 4 of 5
CBUCK, Inc. Certificate of Authorization #8064
CBUCK Engineering
Specialty Structural Engineering
15.0 System/Components
15.1 “Off Ridge Vent”
15.1.1 Material: Steel
15.1.2 Thickness: 26 gauge (min.)
15.1.3 Yield Strength: 40 ksi min.
15.1.4 Corrosion Resistance: In compliance with FBC Section 1507.4.3:
ASTM A792 coated, or ASTM A653 G90 galvanized steel
15.1.5 Overall Product Dimensions (± ¼” nominal):
15.1.5.1 Length(s): 2’, 4’, 6’ and 8’ (max.)
15.1.5.2 Width: 23-1/2” (max.)
15.1.5.3 Height: 4-1/2” and 8-1/2” (max.)
15.2 Fastener:
15.2.1 Base Fastener:
15.2.1.1 Type:
15.2.1.2 Size:
15.2.1.3 Corrosion Resistance:
15.2.1.4 Standard:
Attaches Roof Vent to Deck
Smooth or Ring Shank Roofing Nails
11 gauge × 2” (Long)
Per FBC Section 1506.5
Per ASTM F 1667
15.3 Roof Adhesive:
15.3.1 Type: Standard Heavy bodied Flashing Cement
15.3.2 Description: Asbestos-free asphalt based roof cement
15.3.3 Application Size: 1/4” thick (min.)
15.3.4 Standard: Per ASTM D 4586 Type I
16.0 Installation Method:
(Refer to installation method at the end of this evaluation report.)
Prepare deck opening by trimming any shingles or tiles & existing nails that may interfere with ridge vent
installation. Apply roof cement to the underside, back and side flanges of the ridge vent. Cement should be
a 1/4” thick and extend 2” onto roof underlayment. (Install cement in compliance with manufactu rer’s
installation guidelines.) Position vent base flange beneath loosened shingles and align with deck opening.
Attach the unit side flanges to deck with fasteners per Section 15.2.1 spaced 4” o.c. and 1” from each end.
Apply Roofing Cement to exposed fastener heads. Minimum fastener penetration thru bottom of support,
3/16”.
The FLAMCO “Off-Ridge Vent” shall be installed in compliance with the installation method listed in this
report and applicable code sections of FBC 7th Edition (2020). The installation method described herein is
in accordance with the scope of this evaluation report. Refer to manufacturer’s installation instructions as
a supplemental guide for attachment.
17.0 Evaluation Reference Data:
17.1 ASTM E330-02 Uniform Static Air Pressure Difference Test
By Fenestration Testing Laboratory, Inc. (FTL) (FBC Organization #TST ID: 1657)
Project #16-6647, Lab #9124, Dated: 11/09/16
17.2 Quality Assurance
By Keystone Certifications, Inc. (FBC Organization #: QUA 1824)
Licensee #440
17.3 Engineering Analysis
By James L. Buckner, P.E. @ CBUCK Engineering
(FBC Organization # ANE 1916)
17.4 Certification of Independence
By James L. Buckner, P.E. @ CBUCK Engineering
(FBC Organization # ANE 1916)
FL #: FL 21580.1 R2
Date: 09 / 25 / 20
Report No.: 20-244-ORV-ER
Page 5 of 5
CBUCK, Inc. Certificate of Authorization #8064
CBUCK Engineering
Specialty Structural Engineering
Installation Method
FLAMCO
“Off-Ridge Vent ” Roof Vent
1" from Edge
Fastener is 11 Gauge Galvanized Ring Shank Roofing Nail
Flange
4" o.c. Typical, Maximum
Top Plan View
(Typical Fastening Pattern)
(Not to Scale) Max.
23-1/2" (max.)
“Off-Ridge Vent”
(for Tile Roofs)
Isometric View
“Off-Ridge Vent”
(for Shingle Roofs)
Isometric View