FIRESTOPPING & SMOKE SEALS (US SPECIFICATION) 3 GENERAL

3.4 HORIZONTAL JOINT AND CURTAIN WALL FIRESTOP SYSTEMS
3.4.1 For joint configurations through floor slabs, ceilings and roof Fire Separation unless otherwise stipulated;
The detail to be used shall state the substrate material that it has been tested for i.e.; (concrete to
concrete) or (concrete to metal). Where metal curtain wall assemblies are meeting floor slab assemblies,
use only Listed Systems Designs that have been tested to ASTM E-814 for concrete to metal curtain wall
performance.
3.4.2 Single Component Firestop Systems; Install as per the Listed Systems Design with the following
additional provisions;
3.4.2.1 All Listed Systems Designs selected for use shall have a smoke seal incorporated within the
Firestop System.
3.4.2.2 For joints 1” (25mm) and under in width; Install as per Listed Systems Design.
3.4.2.3 For joints 1 ¼” to 3” (30mm-75mm); Install 6 lb./pcf mineral wool board stock at a depth of 4”
(100mm). Cut mineral wool board stock 10% over the width dimension and compress into the
opening.
3.4.2.4 For joints 3” (75mm) and over; Use mineral wool as above and insert impaling clips on 16”
(400mm) centers. Impaling clips, minimum heavy gauge galvanized steel 25 mm wide x 0.65 mm
thick, Z formed, dimensions to suit location and width of void to be filled. Butt succeeding sections
of mineral wool backer material tightly up against preceding. Leave no voids.
Multiple Component Firestop Systems; Install as per the Listed Systems Design with the following additional
provisions;

3.4.3.1 All Firestop Systems selected for use shall have a Smoke Seal incorporated within the Listed
System Design.
3.4.3.2 For all joints 1” to 3” (25mm-75mm); Install 6 lb./pcf mineral wool board stock at a depth of 4”
(100mm). Cut mineral wool board stock 10% over the width dimension and compress into the
opening.
3.4.3.3 For joints 3” (25mm) and over; Use mineral wool as above and insert impaling clips on 16”
(400mm) centers. Impaling clips, minimum heavy gauge galvanized steel 25 mm wide x 0.65 mm
thick, Z formed, dimensions to suit location and width of void to be filled. Butt succeeding sections
of mineral wool backer material tightly up against preceding. Leave no voids.
3.5 VERTICAL JOINT AND WALL FIRESTOP SYSTEMS

3.5.1 Firestop and Smoke Seals at top of masonry and gypsum wall board Fire Separations and Firewalls
which extend nominally to within 20 mm of underside of deck above. Provide adequate depth of material
to fill gap flush with face of wall, except as otherwise specified.
3.5.2 Insert at both sides of vertical joints where masonry or concrete Firewalls or Fire Separations intersect
with Fire Separations of Combustible Construction (GWB).
3.5.3 Insert at both sides of control and sway joints in masonry or concrete Firewalls or Fire Separations.
3.5.4 Where wall/slab junction is exposed in finished work, apply a concrete gray in color fire-rated sealant to
gap, tooling to a concave joint.
3.6 EXPOSED SERVICE PENETRATIONS IN CEILING OF UNDERGROUND PARKING AREAS
3.6.1 Where the bottom of a Firestop System is exposed, seal bottom side of the assembly with a fire rated
elastomeric firestop sealant.
3.7 SCHEDULE OF LOCATIONS
3.7.1 Service Penetrations:
3.7.1.1 All Mechanical penetrations and poke through termination devices in Fire Separations and
Firewalls.
3.7.1.2 Penetrations in Sills and Headers of gypsum wall board Fire Separations. (interior of wall)
3.7.1.3 All Electrical penetrations and poke through termination devices in Fire Separations and Firewalls.
3.7.1.4 All Telecommunication and Cable penetrations and poke through termination devices in Fire
Separations and Firewalls.
3.7.1.5 All HVAC penetrations and poke through termination devices in Fire Separations and Firewalls.
3.7.1.6 All Sprinkler Heads protruding from Fire Separations.
3.7.2 Joint Firestopping:
3.7.2.1 Concrete Vertical or Horizontal Joints with dissimilar Firewalls or Fire Separations.
3.7.2.2 Top of Masonry Fire Separations and Firewalls to under side of slabs and decks.
3.7.2.3 Masonry Vertical or Horizontal Joints with dissimilar Firewalls or Fire Separations.
3.7.2.4 Gypsum Wall Board Vertical or Horizontal Joints with dissimilar Firewalls or Fire Separations.
3.7.2.5 Slab edge to curtain wall assembly.
3.7.2.6 All Mechanical Damper Joints in Fire Separations and Firewalls. Completely around all wall and
floor dampers, both sides of the wall on wall dampers, top side only in floor dampers.
3.8 ABNORMAL CONDITIONS NOT COVERED BY SUBMITED LISTED SYSTEMS DESIGNS
3.8.1 Where any of the following conditions are encountered after Work has commenced notify the Architect
and/or the site Engineer prior to proceeding.
3.8.1.1 Penetrating item materials not covered by Listed Systems Design(s)
3.8.1.2 Penetrating item sizes exceeding the parameters of Listed Systems Design(s)
3.8.1.3 Annular spaces exceeding the parameters of Listed Systems Design(s)
3.8.1.4 Vertical or horizontal joints exceeding the parameters of Listed Systems Design(s)
3.9 FIRESTOP SYSTEM ON SITE IDENTIFICATION (Optional unless specified)
3.9.1 Each Firestop System installed shall be identified for assurance purposes with a tag or sticker
permanently affixed to the Work containing the following information.
3.9.1.1 The Firestop System manufacturers name.
3.9.1.1 The Firestop System Third Party Testing Agencies assigned Listed Systems Design number.
3.9.1.3 Name and Address of the Contractor performing the Work.
3.9.1.4 Name and/or Trade Qualification Certificate (TQ) number of the installer.
3.10INFORMATION TO BE RETAINED ON SITE AT ALL TIMES


3.10.1 Firestop System Trade Qualification Certificate (TQ) or installer Resume of experience.
3.10.2 Firestop System Manufacturer’s Listed Systems Designs, Product Data Sheets and Materials Safety
Data Sheets.
3.10.3 Firestop System Manufacturer’s printed instructions for installation on each product and prefabricated
device.
3.11 CLEAN UP
3.11.1 Remove excess materials and debris and clean adjacent surfaces immediately after application to
satisfaction of Construction Manager. Remove and or correct staining and discoloring of adjacent
surfaces as directed.
3.11.2 Remove temporary dams after initial set of Firestop Systems where such materials are left exposed in
finished areas and flame spread rating of such materials exceed a value of 25.
3.12 TESTING
3.12.1 Destructive Testing
3.12.1.1 Cut tests will be performed at random locations throughout the Work to check for Firestop
Systems component sealant depths and fill weights of filler/backer materials.
3.12.2 Non Destructive Testing
3.12.2.1 At the Authority Having Jurisdiction or Architects discretion perform a series of 5 fog tests to
random locations as designated by Architect. Should any penetration, joint or void, under the
jurisdiction of this Section, emit visible fog, make repairs and replace deficiencies and re-perform
fog test at no addition cost to Contractor.
3.12.2.2 Fog units (machines) shall have a formulation output range of 6.8 L/h. Formulation particle size
0.5 - 25 microns. Fogging agent shall be non-toxic, non-staining and shall provide a heavy fog at
30 PPM with a permissible airborne level concentration of 50 PPM.
3.12.2.3 Fog at a rate of 4 s / 2.8 m3. Maintain the fog density until inspection is complete.
END OF SECTION

FOR INSERTION IN OTHER NOTES TO THE SPECIFIER

DIVISIONS OF THE GENERAL

SPECIFICATION.
All holes or voids created in Fire
Separations or Firewalls for single
penetrating Mechanical or
Division 3 - Concrete: Insert in Section 3300, Cast in Place Concrete;
Also insert references in Sections 3400 (Precast Concrete) back to this Section.
Electrical service items the annular space shall not exceed 1” (25mm) for items up to 2” (50mm) in outside
diameter. For penetrating items over 2” (50mm) in outside diameter the annular space must not exceed 1 ½”
(37mm). For metallic sprinkler pipe up to 3 ½”, the annular space must be not less than 1 ½” (37mm) and shall
not exceed a maximum of 2” (50mm). For metallic pipe over 3 ½” the minimum annular space must be not less
than 2” (50mm) and shall not exceed a maximum of 3” (75mm).

1.All holes or voids created in Fire Separations or Firewalls for multiple Mechanical and Electrical service

maximum 1 ” (25mm)) at the top of all Fire Separations or Firewalls constructed of unit masonry.
3.All joints at the top of Fire Separations or Firewalls constructed of unit masonry shall be sealed in
accordance with Section 7270: Firestop and Smoke Seals and forms part of the Work of this Section.
4.All holes or voids created in Fire Separations or Firewalls for single penetrating Mechanical or Electrical service
items the annular space shall not exceed 1” (25mm) for items up to 2” (50mm) in outside diameter. For penetrating
items over 2” (50mm) in outside diameter the annular space must not exceed 1 ½” (37mm). For metallic sprinkler
pipe up to 3 ½”, the annular space must be not less than 1 ½” (37mm) and shall not exceed a maximum of 2”
(50mm). For metallic pipe over 3 ½” the minimum annular space must be not less than 2” (50mm) and shall not
exceed a maximum of 3” (75mm).
5.All holes or voids created in Fire Separations or Firewalls for multiple Mechanical and Electrical service

penetration items must not exceed 50% of the overall fill ratio of the penetrating items.
2.Maintain an expansion joint
(minimum of ½” (12mm),
Division 4 - Masonry: Insert in Section 4200, Unit Masonry

penetration items must not exceed 50% of the overall fill ratio of the penetrating items.
Division 7 -Thermal and Moisture Protection: Insert in Section 7900, Joint Sea 6.All Acoustic, Vapor and Air

Barrier sealants used within or

around the perimeter of Fire Separations and Firewalls must conform to ASTM E-84 and have a flame spread rating of

or Drywall Contractor use these paragraphs;
7.All Acoustic, Vapor and Air Barrier sealants and GWB adhesives used within or around the perimeter of Fire
Separations must conform to ASTM E-84 and have a flame spread rating of 25 or less unless they were included
within the Fire Separation at the time of original testing.
8.All Mechanical and Electrical service penetrations that pass through, transverse or terminate within Fire
Separations must be firestopped in accordance with Section 7270: Firestop and Smoke Seals and forms part of
the Work of this Section.
9.All holes or voids created or framed in Fire Separations for Mechanical and Electrical service penetrations the
annular space shall not exceed 1” (25mm) for penetrating items up to 2” (50mm) in outside diameter. For
penetrating items over 2” (50mm) in outside diameter the annular space must not exceed 1 ½” (37mm).
10.All holes or voids created or framed in Fire Separations for multiple Mechanical and Electrical service
penetration items must not exceed 50% of the overall fill ratio of the penetrating items.

If Mechanical and Electrical firestopping is to be performed by another contractor use these paragraphs in
Section 9050;

11.All Acoustic, Vapor and Air Barrier sealants and GWB adhesives used within or around the perimeter of Fire
Separations must conform to ASTM E-84 and have a flame spread rating of 25 or less unless they were included
within the Fire Separation at the time of original testing.

12.All holes or voids created or framed in Fire Separations for Mechanical and Electrical service penetrations the
annular space shall not exceed 1” (25mm) for penetrating items up to 2” (50mm) in outside diameter. For
penetrating items over 2” (50mm) in outside diameter the annular space must not exceed 1 ½” (37mm).

13.All holes or voids created or framed in Fire Separations for multiple Mechanical and Electrical service

25 or less unless they were included within the Fire Separation or Firewall at the time of original testing.
If Mechanical and Electrical
firestopping is to be performed
by the Gypsum Wall Board (GWB)
Division 9 - Finishes: Insert in Section 9050, Gypsum Board
Also insert references in Sections 9210, 9215, 9260, and 9265 back to Section 9050
Contractor use these paragraphs;
14.All mechanical items that pass through or terminate within Fire Separations or Firewalls must be firestopped in
accordance with Section 7270: Firestop and Smoke Seals and forms part of the Work of this Section.
15.All recessed Mechanical boxes or panels in Fire Separations shall be noncombustible (steel) and must be
separated by at least one stud or joist cavity. Back to back installations and/or Combustible (plastic) boxes and
panels are not allowed unless the gypsum board trade has construct a fire rated enclosure equal to that of the Fire
Separation rating around each box or panel.
16.All holes or voids created in Fire Separations or Firewalls for single penetrating items the annular space shall
not exceed 1” (25mm) for penetrating items up to 2” (50mm) in outside diameter. For penetrating items over 2”
(50mm) in outside diameter the annular space must not exceed 1 ½” (37mm). For metallic sprinkler pipe, the
annular space for pipe up to 3 ½” must be a minimum of 1 ½” (37mm). For metallic sprinkler pipe over 3 ½” the
minimum annular space must be 2” (50mm).
17.All holes or voids created in Fire Separations or Firewalls for multiple penetrating mechanical items must have a
fill ratio not less than 50% of the overall void or hole size.

If Mechanical firestopping is to be performed by another contractor use these paragraphs in Section 15050
18.All recessed Mechanical boxes or panels in Fire Separations shall be noncombustible (steel) and must be
separated by at least one stud or joist cavity. Back to back installations and/or Combustible (plastic) boxes and
panels are not allowed unless the gypsum board trade has construct a fire rated enclosure equal to that of the Fire
Separation rating around each box or panel.
19.All holes or voids created in Fire Separations or Firewalls for single penetrating items the annular space shall
not exceed 1” (25mm) for penetrating items up to 2” (50mm) in outside diameter. For penetrating items over 2”
(50mm) in outside diameter the annular space must not exceed 1 ½” (37mm). For metallic sprinkler pipe, the
annular space for pipe up to 3 ½” must be a minimum of 1 ½” (37mm). For metallic sprinkler pipe over 3 ½” the
minimum annular space must be 2” (50mm).

penetration items must not exceed 50% of the overall fill ratio of the penetrating items.
If Mechanical firestopping is to be
performed by a Mechanical
Division 15 - Mechanical: Insert in Section 15050, Basic Materials and Methods

20.All holes or voids created in Fire Separations or Firewalls for multiple penetrating mechanical items must have a
fill ratio not less than 50% of the overall void or hole size.

If Electrical firestopping is to be
performed by the Electrical
Division 16 - Electrical: Insert in Section 16050, Basic Materials and Methods
Contractor use these paragraphs;
21.All Electrical items that pass through, transverse or terminate within Fire Separations or Firewalls must be
firestopped in accordance with Section 7270: Firestop and Smoke Seals and forms part of the Work of this
Section.
22.All recessed Electrical boxes or panels in Fire Separations shall be noncombustible (steel) and must be separated by at least one stud or joist cavity. Back to back installations and/or Combustible (plastic) boxes and
panels are not allowed unless the gypsum board trade has construct a fire rated enclosure equal to that of the Fire
Separation rating around each box or panel.
23.All holes or voids created in Fire Separations or Firewalls for single penetrating wires, cables and conduit the
annular space shall not exceed 1” (25mm) for penetrating items up to 2” (50mm) in outside diameter. For
penetrating items over 2” (50mm) in outside diameter the annular space must not exceed 1 ½” (37mm).
24.All holes or voids created in Fire Separations or Firewalls for multiple penetrating electrical items must have a fill
ratio not less than 50% of the overall void or hole size.

If Electrical firestopping is to be performed by another contractor use these paragraphs in Section 16050;
25.All recessed Electrical boxes or panels in Fire Separations shall be noncombustible (steel) and must be separated by at least one stud or joist cavity. Back to back installations and/or Combustible (plastic) boxes and
panels are not allowed unless the gypsum board trade has construct a fire rated enclosure equal to that of the Fire
Separation rating around each box or panel.
26.All holes or voids created in Fire Separations or Firewalls for single penetrating wires, cables and conduit the
annular space shall not exceed 1” (25mm) for penetrating items up to 2” (50mm) in outside diameter. For
penetrating items over 2” (50mm) in outside diameter the annular space must not exceed 1 ½” (37mm).
27.All holes or voids created in Fire Separations or Firewalls for multiple penetrating electrical items must have a
fill ratio not less than 50% of the overall void or hole size.

For comments or questions END OF NOTES TO THE SPECIFIERregarding this specification or the Current as of January 1996
following 2 pages of “Notes to the Specifier” contact the author at the address below. Soft copy of Specification is available on disk upon request.

Ken Turpin @ 1-800-810-1788
Internet: http://www.firestop.com/firestop/
Email: firestop@deepcove.com

Sunday, January 21, 1996 Canspec.doc


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