HomeMy WebLinkAbout07 81 00 Applied FireproofingTHE KENT
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SECTION 07 81 00 – APPLIED FIREPROOFING
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. This Section includes the following:
1. Concealed SFRM.
2. Exposed SFRM.
B. Related Sections include the following:
1. Division 05 Section "Structural Steel Framing" for surface conditions required for
structural steel receiving SFRM.
2. Division 07 Section "Penetration Fireproofing" for fire-resistive-rated firestopping
systems.
3. Division 07 Section "Fire-resistive Joint Systems" for fire-resistive rated joint systems.
1.3 REFERENCES
A. ASTM E 84 - Surface Burning Characteristics of Building Materials.
B. ASTM E 119 - Fire Tests of Building Construction and Materials.
C. ASTM E 136 - (Non-combustibility) Behavior of Materials in a Vertical Tube Furnace at 750 deg
C.
D. ASTM E 605 - Thickness and Density of Sprayed Fire-Resistive Materials Applied to Structural
Members.
E. ASTM E 736 - Cohesion/Adhesion of Sprayed Fire-Resistive Materials Applied to Structural
Members.
F. ASTM E 759 - Effect of Deflection of Sprayed Fire-Resistive Materials Applied to Structural
Members.
G. ASTM E 760 - Effect of Impact on the Bonding of Sprayed Fire-Resistive Materials Applied to
Structural Members.
H. ASTM E 761 - Compressive Strength of Sprayed Fire-Resistive Materials Applied to Structural
Members.
I. ASTM E 859 - Air Erosion of Sprayed Fire-Resistive Materials Applied to Structural Members.
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J. ASTM E 937 - Corrosion of Steel by Sprayed Fire-Resistive Materials Applied to Structural
Members.
1.4 DEFINITIONS
A. Applied fireproofing: SFRM and intumescent mastic fire-resistive coatings.
B. SFRM: Sprayed fire-resistive material.
C. Concealed: Fire-resistive materials applied to surfaces that are concealed from view behind
other construction when the Work is completed and have not been defined as exposed.
D. Exposed: Fire-resistive materials applied to surfaces that are exposed to view when the Work
is completed, that are accessible through suspended ceilings, that are in elevator shafts and
machine rooms that are in mechanical rooms, that are in air-handling plenums, and that are
identified as exposed on Drawings.
1.5 SUBMITTALS
A. Product Data: For each type of product indicated.
B. Shop Drawings: Structural framing plans indicating the following:
1. Locations and types of surface preparations required before applying SFRM.
2. Extent of SFRM for each construction and fire-resistance rating, including the following:
a. Applicable fire-resistance design designations of a qualified testing and inspecting
agency acceptable to authorities having jurisdiction.
b. Minimum thicknesses needed to achieve required fire-resistance ratings of
structural components and assemblies.
3. Treatment of SFRM after application.
C. Samples for Initial Selection: For each type of colored, exposed SFRM indicated.
D. Samples for Verification: For each type of colored, exposed SFRM, two Samples, each 4
inches square, of each color, texture, and material formulation to be applied. Where finishes
involve normal color and texture variations, include sample sets showing the full range of
variations expected.
E. Product Certificates: For each type of SFRM, signed by product manufacturer.
F. Qualification Data: For Installer, manufacturer, professional engineer, and testing agency.
G. Compatibility and Adhesion Test Reports: From SFRM manufacturer indicating the following:
1. Materials have been tested for bond with substrates.
2. Materials have been verified by SFRM manufacturer to be compatible with substrate
primers and coatings.
3. Interpretation of test results and written recommendations for primers and substrate
preparation needed for adhesion.
H. Product Test Reports: Based on evaluation of comprehensive tests performed by a qualified
testing agency, for proposed SFRM.
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I. Research/Evaluation Reports: For SFRM.
J. Field quality-control test and special inspection reports.
K. Warranties: Special warranties specified in this Section.
1.6 QUALITY ASSURANCE
A. Installer Qualifications: A firm or individual certified, licensed, or otherwise qualified by SFRM
manufacturer as experienced and with sufficient trained staff to install manufacturer's products
according to specified requirements. Source Limitations: Obtain SFRM through one source
from a single manufacturer.
B. Source Limitations: Obtain each type of SFRM and intumescent mastic coating through one
source from a single manufacturer.
C. Applied Fireproofing Testing: By a qualified testing and inspecting agency engaged by
Contractor or manufacturer to test for compliance with specified requirements for performance
and test methods.
D. Compatibility and Adhesion Testing: Engage a qualified testing and inspecting agency to test
for compliance with requirements for specified performance and test methods.
1. Test for bond per ASTM E 736 and requirements in UL's "Fire Resistance Directory" for
coating materials. Provide bond strength indicated in referenced fire-resistance design,
but not less than minimum specified in Part 2.
2. Verify that manufacturer, through its own laboratory testing or field experience, has not
found primers or coatings to be incompatible with applied fireproofing.
E. Fire-Test-Response Characteristics: Provide applied fireproofing with the fire-test-response
characteristics indicated, as determined by testing identical products per test method indicated
below by UL or another testing and inspecting agency acceptable to authorities having
jurisdiction. Identify containers containing applied fireproofing with appropriate markings of
applicable testing and inspecting agency.
1. Fire-Resistance Ratings: Indicated by design designations from UL's "Fire Resistance
Directory" or FM's "Approval Guide, Building Materials" acceptable to authorities having
jurisdiction, for applied fireproofing serving as direct-applied protection tested per
ASTM E 119.
2. Surface-Burning Characteristics: ASTM E 84.
F. Provide products containing no detectable asbestos as determined according to the method
specified in 40 CFR 763, Subpart E, Appendix E, Section 1, "Polarized Light Microscopy."
G. Pre-installation Conference: Conduct conference at Project site to comply with requirements in
Division 01 Section "Project Management and Coordination." Review methods and procedures
related to applied fireproofing including, but not limited to, the following:
1. Review products, exposure conditions, design ratings, restrained and unrestrained
conditions, calculations, densities, thicknesses, bond strengths, and other performance
requirements.
2. Review and finalize construction schedule and verify sequencing and coordination
requirements.
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3. Review weather predictions, ambient conditions, and proposed temporary protections for
applied fireproofing during and after installation.
4. Review surface conditions and preparations.
5. Review field quality-control testing procedures.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Deliver products to Project site in original, unopened packages with intact and legible
manufacturers' labels identifying product and manufacturer, date of manufacture, shelf life if
applicable, and fire-resistance ratings applicable to Project.
B. Use materials with limited shelf life within period indicated. Remove from Project site and
discard materials whose shelf life has expired.
C. Store materials inside, under cover, and aboveground; keep dry until ready for use. Remove
from Project site and discard wet or deteriorated materials.
1.8 PROJECT CONDITIONS
A. Environmental Limitations:
1. Do not apply SFRM when ambient or substrate temperature is 40 deg F or lower unless
temporary protection and heat are provided to maintain temperature at or above this level
for 24 hours before, during, and for 24 hours after product application.
2. When the temperature at the job site is less than 50 deg. F a minimum
substrate and ambient temperature of 50 deg. F shall be maintained
prior to, during and a minimum of 72 hours after application. If necessary for job
schedule, the General Contractor shall provide enclosures and heat to maintain
proper temperatures and humidity levels in the application areas.
B. Ventilation: Ventilate building spaces during and after application of applied fireproofing. Use
natural means or, if they are inadequate, forced-air circulation until fire-resistive material dries
thoroughly.
1. Ventilation shall not be less than the equivalent of 4 complete air changes per
hour.
2. Relative humidity shall not exceed 75% during application and drying period.
1.9 COORDINATION
A. Sequence and coordinate application of applied fireproofing with other related work specified in
other Sections to comply with the following requirements:
1. Provide temporary enclosure as required to confine spraying operations and protect the
environment.
2. Provide temporary enclosures for applications to prevent deterioration of fire-resistive
material due to exposure to weather and to unfavorable ambient conditions for humidity,
temperature, and ventilation.
3. Avoid unnecessary exposure of fire-resistive material to abrasion and other damage likely
to occur during construction operations after its application.
4. Do not apply fire-resistive material to metal roof deck substrates until concrete topping, if
any, has been completed. For metal roof decks without concrete topping, do not apply
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fire-resistive material to metal roof deck substrates until roofing has been completed;
prohibit roof traffic during application and drying of fire-resistive material.
5. Do not begin applying fire-resistive material until clips, hangers, supports, sleeves, and
other items penetrating fire protection are in place.
6. Defer installing ducts, piping, and other items that would interfere with applying fire-
resistive material until application of fire protection is completed.
7. Do not install enclosing or concealing construction until after fire-resistive material has
been applied, inspected, and tested and corrections have been made to defective
applications.
1.10 WARRANTY
A. Special Warranty: Manufacturer's standard form signed by Contractor and by Installer, in which
manufacturer agrees to repair or replace SFRMs that fail in materials or workmanship within
specified warranty period.
1. Failures include, but are not limited to, the following:
a. Cracking, flaking, spalling, or eroding more than specified requirements; peeling;
or delaminating of SFRM from substrates.
b. Not covered under the warranty are failures due to damage by occupants and
Owner's maintenance personnel, exposure to environmental conditions other than
those investigated and approved during fire-response testing, and other causes
not reasonably foreseeable under conditions of normal use.
2. Warranty Period: Two years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 CONCEALED SFRM
A. Products: Subject to compliance with requirements, provide the following:
1. Concealed Cementitious SFRM:
a. Isolatek International Corp.; Cafco 300AC.
B. Material Composition: Manufacturer's standard product, as follows:
1. Concealed Cementitious SFRM: Factory-mixed, dry formulation of gypsum or portland
cement binders, additives, and lightweight mineral or synthetic aggregates mixed with
water at Project site to form a slurry or mortar for conveyance and application.
C. Physical Properties: Minimum values, unless otherwise indicated, or higher values required to
attain designated fire-resistance ratings, measured per standard test methods referenced with
each property as follows:
1. Dry Density: 15 lb/cu. ft. for average and individual densities, or greater if required to
attain fire-resistance ratings indicated, per ASTM E 605 or AWCI Technical Manual 12-A,
Section 5.4.5, "Displacement Method."
2. Thickness: Minimum average thickness required for fire-resistance design indicated
according to the following criteria, but not less than 0.375 inch, per ASTM E 605:
a. Where the referenced fire-resistance design lists a thickness of 1 inch or more, the
minimum allowable individual thickness of SFRM is the design thickness minus
0.25 inch.
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b. Where the referenced fire-resistance design lists a thickness of less than 1 inch
but more than 0.375 inch, the minimum allowable individual thickness of SFRM is
the greater of 0.375 inch or 75 percent of the design thickness.
c. No reduction in average thickness is permitted for those fire-resistance designs
whose fire-resistance ratings were established at densities of less than 15 lb/cu. ft.
3. Bond Strength: 200 lbf/s.f. minimum per ASTM E 736 based on laboratory testing of
0.75-inch minimum thickness of SFRM.
4. Compressive Strength: 5.21 lbf/sq. in. minimum per ASTM E 761. Minimum thickness of
SFRM tested shall be 0.75 inch and minimum dry density shall be as specified but not
less than 15 lb/cu. ft.
5. Corrosion Resistance: No evidence of corrosion per ASTM E 937.
6. Deflection: No cracking, spalling, or delamination per ASTM E 759.
7. Effect of Impact on Bonding: No cracking, spalling, or delamination per ASTM E 760.
8. Air Erosion: Maximum weight loss of 0.025 g/sq. ft. in 24 hours per ASTM E 859. For
laboratory tests, minimum thickness of SFRM is 0.75-inch, maximum dry density is 15
lb/cu. ft. test specimens are not pre-purged by mechanically induced air velocities, and
tests are terminated after 24 hours.
9. Fire-Test-Response Characteristics: Provide SFRM with the following surface-burning
characteristics as determined by testing identical products per ASTM E 84 by UL or
another testing and inspecting agency acceptable to authorities having jurisdiction:
a. Flame-Spread Index: 10 or less.
b. Smoke-Developed Index: 0.
10. Fungal Resistance: No observed growth on specimens per ASTM G 21.
2.2 EXPOSED SFRM
A. Products: Subject to compliance with requirements, provide the following:
1. Exposed Cementitious SFRM:
a. Isolatek International Corp.; Cafco Blaze-Shield HP.
B. Material Composition: Manufacturer's standard product, as follows:
1. Exposed Cementitious SFRM: Factory-mixed, dry, cement aggregate formulation; or
chloride-free formulation of gypsum or portland cement binders, additives, and inorganic
binders, mixed with water at Project site to form a slurry or mortar for conveyance and
application.
C. Physical Properties: Minimum values, unless otherwise indicated, or higher values required to
attain designated fire-resistance ratings, measured per standard test methods referenced with
each property as follows:
1. Dry Density: Values for average and individual densities as required for fire-resistance
ratings indicated, per ASTM E 605 or AWCI Technical Manual 12-A, Section 5.4.5,
"Displacement Method," but with an average density of not less than 22 lb/c.f.
2. Bond Strength: 434 lbf/s.f. minimum per ASTM E 736.
3. Compressive Strength: 51 lbf/s.i. minimum per ASTM E 761.
4. Corrosion Resistance: No evidence of corrosion per ASTM E 937.
5. Deflection: No cracking, spalling or delamination per ASTM E 759.
6. Effect of Impact on bonding: No cracking, spalling, or delamination per ASTM E 760.
7. Air Erosion: Maximum weight loss of 0.025g/s.f.
8. Combustion Characteristics: Passes ASTM E 136.
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9. Fire-Test -Response Characteristics: Provide SFRM with the following surface-burning
characteristics as determined by testing identical products per ASTM E 84 by UL or
another testing and inspection agency acceptable to authorities having jurisdiction:
a. Flame Spread Index: 10 or less.
b. Smoke-Developed Index: 0.
2.3 AUXILIARY FIRE-RESISTIVE MATERIALS
A. General: Provide auxiliary fire-resistive materials that are compatible with SFRM and
substrates, are approved by UL or another testing and inspecting agency acceptable to
authorities having jurisdiction for use in fire-resistance designs indicated, and are approved by
SFRM manufacturer, including the following as required:
B. Compatible Metal Primer:
1. Primer shall be approved by applied fireproofing manufacturer and applied in
accordance with the primer manufacturer’s written instructions.
2. Refer to Specification Section 09 96 00 "High Performance Coatings" for universal metal
primer.
C. Reinforcement:
1. Metal lath.
2. Reinforcing fabric.
3. Reinforcing mesh.
D. Top Coats
1. Cement based top coat.
2. Veneer plaster top coat.
3. Water based permeable top coat.
4. Sealer.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with
requirements for substrates and other conditions affecting performance of work. A substrate is
in satisfactory condition if it complies with the following:
1. Substrates comply with requirements in the Section where the substrate and related
materials and construction are specified.
2. Substrates are free of dirt, oil, grease, release agents, rolling compounds, mill scale,
loose scale, incompatible primers, incompatible paints, incompatible encapsulants, or
other foreign substances capable of impairing bond of fire-resistive materials with
substrates under conditions of normal use or fire exposure.
3. Objects penetrating fire-resistive material, including clips, hangers, support sleeves, and
similar items, are securely attached to substrates.
4. Substrates are not obstructed by ducts, piping, equipment, and other suspended
construction that will interfere with applying fire-resistive material.
B. Verify that concrete work on steel deck has been completed.
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C. Verify that roof construction, installation of roof-top HVAC equipment, and other related work are
completed.
D. Conduct tests according to fire-resistive material manufacturer's written recommendations to
verify that substrates are free of substances capable of interfering with bond.
E. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A. Cover other work subject to damage from fallout or overspray of fire-resistive materials during
application.
B. Clean substrates of substances that could impair bond of fire-resistive material, including dirt,
oil, grease, release agents, rolling compounds, mill scale, loose scale, and incompatible
primers, paints, and encapsulants.
C. Prime substrates where recommended in writing by applied fireproofing manufacturer unless
compatible shop primer has been applied and is in satisfactory condition to receive applied
fireproofing.
D. For exposed applications, repair substrates to remove surface imperfections that could affect
uniformity of texture and thickness in finished surface of applied fireproofing. Remove minor
projections and fill voids that would telegraph through fire-resistive products after application.
3.3 APPLICATION, GENERAL
A. Comply with fire-resistive material manufacturer's written instructions for mixing materials,
application procedures, and types of equipment used to mix, convey, and spray on fire-resistive
material, as applicable to conditions of installation and as required to achieve fire-resistance
ratings indicated.
B. Apply applied fireproofing that is identical to products tested as specified in Part 1 "Quality
Assurance" Article and substantiated by test reports, with respect to rate of application,
accelerator use, sealers, topcoats, tamping, troweling, water overspray, or other materials and
procedures affecting test results.
C. Install metal lath and reinforcing fabric as required, to comply with fire-resistance ratings and
fire-resistive material manufacturer's written recommendations for conditions of exposure and
intended use. Securely attach lath and fabric to substrate in position required for support and
reinforcement of fire-resistive material. Use anchorage devices of type recommended in writing
by SFRM manufacturer. Attach accessories where indicated or required for secure attachment
of lath and fabric to substrate.
D. Coat substrates with bonding adhesive before applying fire-resistive material where required to
achieve fire-resistance rating or as recommended in writing by applied fireproofing manufacturer
for material and application indicated.
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E. Extend fire-resistive material in full thickness over entire area of each substrate to be protected.
Unless otherwise recommended in writing by applied fireproofing manufacturer, install body of
fire-resistive covering in a single course.
F. Spray-apply fire-resistive materials to maximum extent possible. Following the spraying
operation in each area, complete the coverage by trowel application or other placement method
recommended in writing by applied fireproofing manufacturer.
G. For applications over encapsulant materials, including lockdown (post-removal) encapsulants,
apply applied fireproofing that differs in color from that of encapsulant over which it is applied.
H. Where sealers are used, apply products that are tinted to differentiate them from applied
fireproofing over which they are applied.
3.4 APPLICATION, CONCEALED SFRM
A. Apply concealed SFRM in thicknesses and densities not less than those required to achieve
fire-resistance ratings designated for each condition but apply in greater thicknesses and
densities if specified in Part 2 "Concealed SFRM" Article.
B. Cure concealed SFRM according to product manufacturer's written recommendations.
C. Apply sealer to concealed SFRM where indicated.
D. Apply topcoat to concealed SFRM where indicated.
3.5 APPLICATION, EXPOSED SFRM
A. Apply exposed SFRM in thicknesses and densities not less than those required to achieve fire-
resistance ratings designated fir each condition but apply in greater thicknesses and density if
indicated.
1. For steel beams and bracing, provide a thickness of not less than 1 inch.
2. For metal floor or roof decks, provide a thickness of not less than 1/2 inch.
B. Provide a uniform finish complying with description indicated for each type of material and
matching Architect's sample or, if none, finish approved for field-erected mock-up.
C. Apply exposed cementitious SFRM tot produce the following finish:
1. Spray-textured finish with no further treatment.
2. Even, spray-textured finish, produced by rolling flat surfaces of fire-protected members
with a damp paint roller to remove drippings and excessive roughness.
3. Skip-troweled finish with leveled surface, smoothed-out texture, and neat edges.
4. Smooth, troweled finish with surface markings eliminated and edges squared.
D. Cure exposed SFRM according to product manufacturer's written recommendations.
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3.6 FIELD QUALITY CONTROL
A. Special Inspections: Engage a qualified special inspector to perform the following special
inspection and prepare reports:
1. SFRM.
B. Testing Agency: Engage a qualified testing agency to perform tests and inspections and
prepare test reports.
1. Testing and inspecting agency will interpret tests and state in each report whether tested
work complies with or deviates from requirements.
C. Tests and Inspections: Testing and inspecting of completed applications of SFRM shall take
place in successive stages, in areas of extent and using methods as follows. Do not proceed
with application of SFRM for the next area until test results for previously completed
applications of SFRM show compliance with requirements. Tested values must equal or exceed
values indicated and required for approved fire-resistance design.
1. Thickness for Floor, Roof, and Wall Assemblies: For each 1000-sq. ft. area, or partial
area, on each floor, from the average of 4 measurements from a 144-sq. in. sample area,
with sample width of not less than 6 inches per ASTM E 605.
2. Thickness for Structural Frame Members: From a sample of 25 percent of structural
members per floor, taking 9 measurements at a single cross section for structural frame
beams or girders, 7 measurements of a single cross section for joists and trusses, and 12
measurements of a single cross section for columns per ASTM E 605.
3. Density for Floors, Roofs, Walls, and Structural Frame Members: At frequency and from
sample size indicated for determining thickness of each type of construction and
structural framing member, per ASTM E 605 or AWCI Technical Manual 12-A,
Section 5.4.5, "Displacement Method."
4. Bond Strength for Floors, Roofs, Walls, and Structural Framing Members: For each
10,000-sq. ft. area, or partial area, on each floor, cohesion and adhesion from one
sample of size indicated for determining thickness of each type of construction and
structural framing member, per ASTM E 736.
a. Field test SFRM that is applied to flanges of wide-flange, structural-steel members
on surfaces matching those that will exist for remainder of steel receiving fire-
resistive material.
b. If surfaces of structural steel receiving SFRM are primed or otherwise painted for
coating materials, perform series of bond tests specified in UL's "Fire Resistance
Directory." Provide bond strength indicated in referenced UL fire-resistance
criteria, but not less than 200 lbf/sq. ft. minimum per ASTM E 736.
5. If testing finds applications of SFRM are not in compliance with requirements, testing and
inspecting agency will perform additional random testing to determine extent of
noncompliance.
D. Remove and replace applications of SFRM that do not pass tests and inspections for cohesion
and adhesion, for density, or for both and retest as specified above.
E. Apply additional SFRM, per manufacturer's written instructions, where test results indicate that
thickness does not comply with specified requirements, and retest as specified above.
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3.7 CLEANING, PROTECTING, AND REPAIR
A. Cleaning: Immediately after completing spraying operations in each containable area of
Project, remove material overspray and fallout from surfaces of other construction and clean
exposed surfaces to remove evidence of soiling.
B. Protect SFRM, according to advice of product manufacturer and Installer, from damage
resulting from construction operations or other causes so fire protection will be without damage
or deterioration at time of Substantial Completion.
C. Coordinate application of SFRM with other construction to minimize need to cut or remove fire
protection. As installation of other construction proceeds, inspect SFRM and patch any
damaged or removed areas.
D. Repair or replace work that has not successfully protected steel.
END OF SECTION 07 81 00