SECTION 07 84 43

FIRESTOPPING

Display hidden notes to specifier. (Don't know how? Click Here) 
 Copyright 2017 -  2025 ARCAT, Inc. - All rights reserved

PART 1    GENERAL
1.1	SECTION INCLUDES
A.	Backer rod for fire rated construction joints.
1.2	RELATED SECTIONS
A.	Section 07 84 13 - Penetration Firestopping.
B.	Section 07 91 23 - Backer Rods.
1.3	REFERENCES
A.	ASTM C 719 - Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic movement.
B.	ASTM C 920 - Specification for Elastomeric Joint Sealants
C.	ASTM E 84 - Test Method for Surface Burning Characteristics of Building Materials
D.	ASTM E 90 - Test Method for Laboratory Measurement of Air-borne-Sound Transmission Loss of Building Partitions.
E.	ASTM E 119 - Method for Fire Tests of Building Construction and Materials.
F.	ASTM E 136 - Test Method for Behavior of Materials in a Vertical Tube Furnace at 750 degreesC.
G.	ASTM E 814 - Methods for Fire Tests of Through-Penetration Fire Steps.
H.	ASTM E 1399 - Test Method of Cyclic Movement and measuring the Minimum and Maximum joint Widths of Architectural Joint System.
I.	NFPA 251 - Fire Test of Building Construction Materials.
J.	NFPA 255 - Burning Character of Building Materials.
K.	UL 263-92 - UL Standard for Safety Fire Tests of Building Construction and Materials.
L.	UL 2079 - UL Standard for Safety Tests for Fire Resistance of Building Joint Systems.
M.	UL 1479 - UL Standard for Safety Fire Test of Through-Penetration Firestops.
N.	UL 723 - UL Standard for Safety Test for Surface Burning Characteristics of Building Materials.
1.4	SUBMITTALS
A.	Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.	Product Data: Manufacturer's data sheets on each product to be used, including:
1.	Preparation instructions and recommendations.
2.	Storage and handling requirements and recommendations.
3.	Installation methods.
C.	Shop Drawings: Provide construction detail required to comply with fire rated construction indicated.
D.	Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) square representing actual product, color, and patterns.
1.5	QUALITY ASSURANCE
A.	Manufacturer Qualifications: Minimum 5 year experience manufacturing similar products.
B.	Installer Qualifications: Minimum 2 year experience installing similar products.
C.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
1.	Finish areas designated by Architect.
2.	Do not proceed with remaining work until workmanship is approved by Architect.
3.	Rebuild mock-up area as required to produce acceptable work.
1.6	PRE-INSTALLATION MEETINGS
A.	Convene minimum two weeks prior to starting work of this section.
1.7	DELIVERY, STORAGE, AND HANDLING
A.	Deliver and store products in manufacturer's unopened packaging bearing the brand name and manufacturer's identification until ready for installation.
B.	Handling: Handle materials to avoid damage.
1.8	PROJECT CONDITIONS
A.	Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.
1.9	SEQUENCING
A.	Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.
PART 2    PRODUCTS
2.1	MANUFACTURERS
A.	Acceptable Manufacturer: Backer Rod Mfg. Inc., which is located at:<BR />4244 N. Broadway<BR />Denver, CO 80216<BR />Toll Free Tel: 800-595-2950<BR />Tel: 303-308-0363<BR />Fax: 303-308-0393<BR />Email: request info (bbergel@backerrod.com);Web: http://www.backerrod.com 
B.	Substitutions: Not permitted.
C.	Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
2.2	APPLICATIONS/SCOPE
A.	Construction Joint Fire-Stopping Systems
1.	Product: Ultra Block as manufactured by Backer Rod Mfg. Inc.
B.	Fire Stopping Assembly:
1.	Expansion Joint systems shall be a minimum 2-component design. The depth of the backer rod controls the heat sink or temperature rise from the hot face to cold side of the structure. The addition of an elastomeric sealant, nominal 1/2 inch (13 mm) thick, to one or both sides as required contains the smoke, the toxic fumes and the unburned gases.
C.	Assembly:
1.	Configuration: "No. 1" - Backer rod in required length and configuration with sealant at one side. 
2.	Configuration: "No.2" - Backer rod in required length and configuration at both openings of joint with sealant at both backer rod locations.  
 	Join Width 	Ultra Block Thickness 	  	Ultra Block Width 2 Hour 	  	Ultra Block Width 3 Hour 	  	Ultra Block Width 4 Hour 	
   	  	  	  	Configuration 	  	 Configuration 	  	 Configuration 	
   	  	  	No. 1 	No. 2 	No. 1 	No. 2 	No. 1 	No. 2 	
   	1/2" 	3/8" 	6" 	2" 	8" 	4" 	12" 	6" 	
   	3/4" 	1/2" 	6" 	2" 	8" 	4" 	12" 	6" 	
   	1" 	3/4" 	6" 	3-1/2" 	8" 	4" 	12" 	6" 	
   	1-1/2" 	1" 	6" 	3-1/2" 	8" 	4" 	12" 	6" 	
 Thickness Requirements: Joint Width: 1/2 inch (13 mm)/ Use 3/8 inch (9.5 mm) backer rod. Joint Width: 3/4 inch (19 mm)/ Use 1/2 inch (13 mm) backer rod. Joint Width: 1 inch (25 mm)/ Use 3/4 inch (19 mm) backer rod. Joint Width: 1-1/2 inch (38 mm)/ Use 1 inch (25 mm) backer rod. Joint widths of 2 inches or wider require a multi-layer design engineered by the manufacturer. 

END OF SECTION