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1997-12-25
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SECTION 07270
FIRESTOPPING
PART 1 - GENERAL
1.01 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including
General and Supplementary Conditions and Division-1
Specification Section, apply to work specified in this
section.
1.02 DEFINITIONS
A. Firestopping: Material or combination of materials
used to retain integrity of fire-rated construction by
maintaining an effective barrier against the spread of
flame, smoke, water and hot gases through penetrations
in fire rated wall and floor assemblies.
1.03 GENERAL DESCRIPTION OF THE WORK OF THIS SECTION
Only tested firestop systems shall be used in specific
locations as follows:
A. Penetrations for the passage of duct, cable, cable tray
conduit, piping, electrical busways and raceways
through fire-rated vertical barriers (walls and
partitions), horizontal barriers (floor/ceiling
assemblies), and vertical service shaft walls and
partitions.
B. Safing slot gaps between edge of floor slabs and
curtain walls.
C. Openings between structurally separate sections of wall
or floors.
D. Gaps between the top of walls and ceilings or roof
assemblies.
E. Expansion joints in walls and floors.
F. Openings and penetrations in fire-rated partitions or
walls containing fire doors.
G. Openings around structural members which penetrate
floors or walls.
1.04 RELATED WORK OF OTHER SECTIONS
A. Coordinate work of this section with work of other
sections as required to properly execute the work and
as necessary to maintain satisfactory progress of the
work of other sections, including:
1. Section 03300 - Concrete Work
2. Section 07900 - Joint Sealers
3. Section 04200 - Masonry Work
4. Section 09200 - Lath and Plaster
5. Section 09250 - Gypsum Drywall Systems
6. Section 13080 - Sound, Vibration and Seismic
Control
7. Section 13900 - Fire Suppression and
Supervisory Systems
8. Section 15050 - Basic Mechanical Materials and
Methods
9. Section 15250 - Mechanical Insulation
10. Section 15300 - Fire Protection
11. Section 15400 - Plumbing
12. Section 16050 - Basic Electrical Materials and
Methods
1.05 REFERENCES
A. Test Requirements: ASTM E-814, "Standard Method of
Fire Tests of Through Penetration Fire Stops"
(July 1983).
B. Underwriters Laboratories (UL) of Northbrook, IL runs
ASTM E-814 under their designation of UL 1479 and
publishes the results in their "FIRE RESISTANCE
DIRECTORY" that is updated annually with a midyear
supplement.
1. UL Fire Resistance Directory:
a. Through-Penetration Firestop Devices (XHCR)
b. Fire Resistance Ratings (BXUV)
c. Through-Penetration Firestop Systems (XHEZ)
d. Fill, Voids, or Cavity Material (XHHW)
e. Forming Materials (XHKU)
C. Test Requirements: UL 2079,
Tests for Resistance of Building Joint Systems
(November 1994).
D. ASTM E-84, Standard Test Method for Surface Burning
Characteristics of Building Materials.
E. All three major building codes: ICBO, SBCCI,
and BOCA
F. NFPA 101 - Life Safety Code
G. NFPA 70 - National Electric Code
1.06 QUALITY ASSURANCE
A. A manufacturer's direct representative (not distributor
or agent) to be on-site during initial installation of
firestop systems to train appropriate contractor
personnel in proper selection and installation
procedures. This will be done per manufacturer's
written recommendations published in their literature
and drawing details.
B. Firestop System installation must meet requirements of
ASTM E-814, UL 1479 or UL 2079 tested assemblies that
provide a fire rating equal to that of construction
being penetrated.
C. Proposed firestop materials and methods shall conform
to applicable governing codes having local jurisdiction.
D. Firestop Systems do not reestablish the structural
integrity of load bearing partitions/assemblies, or
support live loads and traffic. Installer shall
consult the structural engineer prior to penetrating
any load bearing assembly.
E. For those firestop applications that exist for which
no UL tested system is available through any
manufacturer, a manufacturer's engineering judgment
derived from similar UL system designs or other tests
will be submitted to local authorities having
jurisdiction for their review and approval prior to
installation. Engineer judgment drawings must follow
requirements set forth by the International Firestop
Council (September 7, 1994).
1.07 SUBMITTALS
A. Submit Product Data: Manufacturer's specifications
and technical data for each material including the
composition and limitations, documentation of UL
firestop systems to be used and manufacturer's
installation instructions to comply with Section 1300.
B. Manufacturer's engineering judgment identification
number and drawing details when no UL system is
available for an application. Engineer judgment
must include both project name and contractor's
name who will install firestop system as described in
drawing.
C. Submit material safety data sheets provided with
product delivered to job-site.
1.08 INSTALLER QUALIFICATIONS
A. Engage an experienced Installer who is certified,
licensed, or otherwise qualified by the firestopping
manufacture as having the necessary experience, staff,
and training to install manufacture's products per
specified requirements. A manufacture's willingness to
sell its firestopping products to the Contractor or to
an Installer engaged by the Contractor does not in
itself confer qualification on the buyer.
1.09 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials undamaged in manufacturer's clearly
labeled, unopened containers, identified with brand,
type, and UL label where applicable.
B. Coordinate delivery of materials with scheduled
installation date to allow minimum storage time at
job-site.
C. Store materials under cover and protect from weather
and damage in compliance with manufacturer's
requirements.
D. Comply with recommended procedures, precautions or
remedies described in material safety data sheets as
applicable.
E. Do not use damaged or expired materials.
1.10 PROJECT CONDITIONS
A. Do not use materials that contain flammable solvents.
B. Schedule installation of firestopping after completion
of penetrating item installation but prior to covering
or concealing of openings.
C. Verify existing conditions and substrates before
starting work. Correct unsatisfactory conditions
before proceeding.
D. Weather conditions: Do not proceed with installation
of firestop materials when temperatures exceed the
manufacturer's recommended limitations for installation
printed on product label and product data sheet.
E. During installation, provide masking and drop cloths to
prevent firestopping materials from contaminating any
adjacent surfaces.
PART 2 - PRODUCTS
2.01 FIRESTOPPING, GENERAL
A. Provide firestopping composed of components that are
compatible with each other, the substrates forming
openings, and the items, if any, penetrating the
firestopping under conditions of service and
application, as demonstrated by the firestopping
manufacture based on testing and field experience.
B. Provide components for each firestopping system that
are needed to install fill material. Use only
components specified by the firestopping manufacture
and approved by the qualified testing agency for the
designated fire-resistance-rated systems.
2.02 ACCEPTABLE MANUFACTURERS
A. Subject to compliance with through penetration
firestop systems (XHEZ) listed in Volume II of the
UL Fire Resistance Directory, provide products of the
following manufacturers as identified below:
1. Hilti, Inc., Tulsa, Oklahoma
(918) 252-6901
2. Tremco Sealants & Coatings, Beachwood, Ohio
(216) 292-5000
3. 3M Fire Protection Products, St. Paul, Minnesota
(612) 736-0203
2.03 MATERIALS
A. Use only firestop products that have been UL 1479,
ASTM E-814, or UL 2079 tested for specific fire-rated
construction conditions conforming to construction
assembly type, penetrating item type, annular space
requirements, and fire-rating involved for each
separate instance.
B. For penetrations by non-combustible items including
steel pipe, copper pipe, rigid steel conduit and
electrical metallic tubing (EMT), the following
materials are acceptable:
1. Hilti FS 601 Elastomeric Firestop Sealant
2. Hilti FS-ONE High Performance Intumescent
Firestop Sealant
3. 3M Fire Stop Sealant 2000
4. 3M Fire Barrier CP25 WB
5. Tremco Tremstop Fyre-Sil Sealant
C. For fire-rated construction joints and other gaps,
the following materials are acceptable:
1. Hilti FS 601 Elastomeric Firestop Sealant
2. Hilti CP 601s Elastomeric Firestop Sealant
3. Hilti CP 606 Flexible Firestop Sealant
4. 3M Firestop Sealant 2000
5. Tremco Tremstop Fyre-Sil Sealant
D. For penetrations by combustible items (penetrants
consumed by high heat and flame) including insulated
metal pipe, PVC jacketed, flexible cable or cable
bundles and plastic pipe (closed piping systems), the
following materials are acceptable:
1. Hilti FS-ONE High Performance Intumescent
Firestop Sealant
2. Hilti CP 642 Firestop Jacket
3. Hilti CP 643 Firestop Jacket
4. 3M Fire Barrier CP25 WB
5. 3M Fire Barrier FS-195 Wrap/Strip
6. Tremco Tremstop WBM Intumescent Firestop
Sealant
E. For penetrations by combustible plastic pipe (open
piping systems), the following materials are acceptable:
1. Hilti CP 642 Firestop Jacket
2. Hilti CP 643 Firestop Jacket
3. Hilti FS-ONE High Performance Intumescent
Firestop Sealant
4. 3M Fire Barrier PPD Plastic Pipe Device
F. For large size/complex penetrations made to accommodate
cable trays, multiple steel and copper pipes,
electrical busways in raceways, the following materials
are acceptable:
1. Hilti FS 635 Trowelable Firestop Compound
2. Hilti FIRE BLOCK
3. 3M Firestop Foam 2001
4. 3M Fire Barrier CS-195 Composite Sheet
G. For openings between structurally separate sections of
wall and floors. Top-of-walls, the following materials
are acceptable:
1. Hilti FS 601 Elastomeric Firestop Sealant
2. Hilti CP 601s Elastomeric Firestop Sealant
3. Hilti CP 606 Flexible Firestop Sealant
4. Hilti FS-ONE High Performance Intumescent
Firestop Sealant
5. 3M Fire Barrier CP 25 WB
H. Provide a firestop system with a "F" Rating as
determined by UL1479 or ASTM E814 which is equal to the
time rating of construction being penetrated.
I. Provide a firestop system with an Assembly Rating as
determined by
UL 2079 which is equal to the time rating of
construction being penetrated.
PART 3 - EXECUTION
3.01 PREPARATION
A. Verification of Conditions: Examine areas and
conditions under which work is to be performed and
identify conditions detrimental to proper or timely
completion.
1. Verify penetrations are properly sized and in
suitable condition for application of materials.
2. Surfaces to which firestop materials will be
applied shall be free of dirt, grease, oil,
rust, laitance, release agents water repellents,
and any other substances that may effect proper
adhesion
3. Provide masking and temporary covering to prevent
soiling of adjacent surfaces by firestopping
materials.
4. Comply with manufacturer's recommendations for
temperature and humidity conditions before,
during and after installation of firestopping.
5. Do not proceed until unsatisfactory conditions
have been corrected.
3.02 INSTALLATION
A. Regulatory Requirements: Install firestop materials in
accordance with published "Through-Penetration Firestop
Systems" in UL's Fire Resistance Directory.
B. Manufacturer's Instructions: Comply with manufacturer's
instructions for installation of through-penetration
materials.
1. Seal all holes or voids made by penetrations to
ensure an air and water resistant seal.
2. Consult with mechanical engineer, project
manager prior to installation of UL firestop
systems that might hamper the performance of
fire dampers as it pertains to duct work.
3. Protect materials from damage on surfaces subjected to
traffic.
3.03 FIELD QUALITY CONTROL
A. Examine sealed penetration areas to ensure proper
installation before concealing or enclosing areas.
B. Keep areas of work accessible until inspection by
applicable code authorities.
C. Perform under this section patching and repairing of
firestopping caused by cutting or penetrating of existing
firestop systems already installed by other trades.
3.04 ADJUSTING AND CLEANING
A. Remove equipment, materials and debris, leaving area in
undamaged, clean condition.
B. Clean all surfaces adjacent to sealed holes and joints
to be free of excess firestop materials and soiling as
work progresses.
END OF SECTION