• 1.01 SUMMARY
    1. Work under this section consists of the furnishing of all labor, materials, equipment, and services necessary
    2. for, and incidental to, the complete and proper installation of all cementitious fireproofing and related work as shown on the drawings or specified herein, and in accordance with all applicable requirements of the contract documents.
    3. Conform to all applicable building code requirements of all authorities having jurisdiction.
    1. Section (___________________________________): Concrete
    2. Section (___________________________________): Structural Steel
    3. Section (___________________________________): Metal Deck
    4. Section (___________________________________): Roof Insulation
    1. American Society for Testing and Materials (ASTM):
      1. ASTM E84 Surface Burning Characteristics
      2. ASTM E119 Standard Methods of Fire Tests of Building Construction and Materials
      3. ASTM E605 Standard Test Methods for Thickness and Density of Sprayed Fire-Resistive
      4. Material Applied to Structural Members
      5. ASTM E736 Cohesion/Adhesion of Sprayed Fire-Resistive Material Applied to Structural
      6. Members
      7. ASTM E759 Effect of Deflection on Sprayed Fire-Resistive Material Applied to Structural
      8. Members
      9. ASTM E760 Effect of Impact on Bonding of Sprayed Fire-Resistive Material Applied to
      10. Structural Members
      11. ASTM E761 Compressive Strength of Sprayed Fire-Resistive Material Applied to Structural
      12. Members
      13. ASTM E859 Air Erosion of Sprayed Fire-Resistive Material Applied to Structural Members
      14. ASTM E937 Corrosion of Steel by Sprayed Fire-Resistive Material Applied to Structural
      15. Members
      16. ASTM E1354 Cone Calorimeter
      17. ASTM G21 Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi
    2. Bureau of Building Inspection: City of San Francisco
      1. Abrasion Resistance Test Method
      2. Impact Penetration Test Method
    3. Underwriters Laboratories Inc. (UL) Fire Resistance Directory (Latest Edition)
    4. Uniform Building Code (UBC)
      1. UBC Standard No. 7-6 ­ Thickness and Density Determination for Spray Applied Fireproofing
      2. UBC Standard No. 7-7 ­ Methods for Calculating Fire Resistance of Steel, Concrete and Wood Construction
      1. AWCI Technical Manual 12-A: Standard Practice for the Testing and Inspection of Spray Applied Fire-Resistive Materials
      2. AWCI Technical Manual 12: Design Selection Utilizing Spray Applied Fire-Resistive Materials
    1. Cementitious Fireproofing as defined by Underwriters Laboratories Inc. (CALV) in the latest edition of the
    2. UL Fire Resistance Directory.
    1. Manufacturer¹s Data: Submit manufacturer¹s instructions for proper application of cementitious fireproofing.
    2. Fire Testing: Submit evidence that the cementitious fireproofing has been subjected to full-scale ASTM E119 fire testing at Underwriters Laboratories Inc. by the manufacturer.
    3. Thickness Schedule: Provide schedule indicating material to be used, building elements to be protected with spray applied fireproofing, hourly rating and material thickness provided and appropriate references.
    4. Test Data: Independent laboratory test results for fireproofing shall be submitted for the following performance criteria:
      1. Bond Strength per ASTM E736
      2. Compressive Strength per ASTM E761
      3. Deflection per ASTM E759
      4. Bond Impact per ASTM E760
      5. Air Erosion per ASTM E859
      6. Corrosion Resistance per ASTM E937
      7. Abrasion Resistance (Test Method developed by City of San Francisco, Bureau of Building Inspection)
      8. Impact Penetration (Test Method developed by City of San Francisco, Bureau of Building Inspection)
      9. High Speed Air Erosion per ASTM E859
      10. Surface Burning Characteristics per ASTM E84
      11. Combustibility per ASTM E1354 Cone Calorimeter
      12. Mold Resistance per ASTM G21
    1. Fireproofing work shall be performed by a firm acceptable to the cementitious fireproofing material manufacturer.
    2. Products, execution, and fireproofing thicknesses shall conform to the applicable code requirements for the required fire-resistance ratings.
    3. Contractor, fireproofing subcontractor and independent testing laboratory shall attend a pre-installation conference to review the substrates for acceptability, method of application, applied thicknesses, inspection procedures and other issues.
    1. Material shall be delivered in original unopened packages, fully identified as to manufacturer, brand or other identifying data and bearing the proper Underwriters Laboratories Inc. labels for Surface Burning Characteristic and Fire Resistance Classification.
    2. Material shall be stored off the ground, under cover, and in a dry location until ready for use. All bags that have been exposed to water before use shall be found unsuitable and discarded. Stock of material is to be rotated and used prior to its expiration date.
    1. A minimum air and substrate temperature of 4.4°C (40°F) shall be present before application of spray applied fireproofing. A minimum air and substrate temperature of 4.4°C (40°F) must be maintained during and for 24 hours after application of the spray applied fireproofing. Provide enclosures with heat to maintain temperature.
    2. Provide ventilation in poorly ventilated areas to achieve a minimum total air exchange rate of 4 times per hour until the material is substantially dry.
    1. Sequence and coordinate application of cementitious fireproofing with work in other sections which would interfere with efficient fireproofing application.


    1. Fireproofing shall be cementitious mixture as manufactured by Grace Construction Products,
    2. R. Grace & Co.-Conn., or its processing distributors.
  • 2.02 MATERIALS
    1. Materials shall be Monokote® MK®-6 factory-blended cementitious fireproofing.

      NOTE TO SPECIFIER: Product Selection Monokote MK-6®/HY® and MK-6s afford the same level of fire protection at identical protection thicknesses. Both MK-6/HY and MK-6s meet or exceed all performance criteria listed in this specification. By simply specifying ³Monokote MK-6,² the fireproofing subcontractor can select the product that will provide the most efficient fire protection for the specific project conditions. Both MK-6/HY and MK-6s can be used on flat plate cellular decking. Where cellular decking is present, include a requirement in Section

  • 2.03 (Accessories) for Spatterkote® SK-3.
    1. Physical Performance Characteristics: Fireproofing material shall meet the following physical performance standards:
      1. Dry Density: The field density shall be measured in accordance with ASTM Standard E605. Minimum average density shall be that required by the manufacturer, listed in the UL Fire Resistance Directory for each rating indicated, ICBO Evaluation Report, as required by the authority having jurisdiction, or minimum average 240 kg/m3 (15 pcf), whichever is greater.Deflection: Material shall not crack or delaminate from the surface to which it is applied when tested in accordance with ASTM E759.
      2. Bond Impact: Material subject to impact tests in accordance with ASTM E760 shall not crack or from the surface to which it is applied.
      3. Bond Strength: Fireproofing, when tested in accordance with ASTM E736, shall have a minimum average bond strength of 9.6 KPa (200 psf) and a minimum individual bond strength of 7.2 KPa (150 psf).
      4. Air Erosion: Maximum allowable total weight loss of the fireproofing material shall be .05 g/m2 (.005 g/ft2) when tested in accordance with ASTM E85
      5. Sample surface shall be ³as applied² (not pre-purged) and the total reported weight loss shall be the total weight loss over a 24 hour period from the beginning of the test.
      6. High Speed Air Erosion: Materials to be used in plenums or ducts shall exhibit no continued erosion after 4 hours at an air speed of 12.7 m/s (47 km/h) [2500 ft/min (29 mph)] when tested per ASTM E859.
      7. Compressive Strength: The fireproofing shall not deform more than 10% when subjected to compressive forces of 57 KPa (1200 psf) when tested in accordance with ASTM E761.
      8. Corrosion Resistance: Fireproofing applied to steel shall be tested in accordance with ASTM E937 and shall not promote corrosion of steel.
      9. Abrasion Resistance: No more that 15 cm3 shall be abraded or removed from the fireproofing substrate when tested in accordance with the test methods developed by the City of San Francisco, Bureau of Building Inspection.
      10. 1
      11. Impact Penetration: The fireproofing material shall not show a loss of more than 6 cm3 when subjected to impact penetration tests in accordance with the test methods developed by the City of San Francisco, Bureau of Building Inspection.
      12. 1
      13. Surface Burning Characteristics: Material shall exhibit the following surface burning characteristics when tested in accordance with ASTM E84:
        1. Flame Spread 0
        2. Smoke Development 0
      14. Resistance to Mold: The fireproofing material shall be formulated at the time of manufacturing with mold inhibitor. Fireproofing material shall be tested in accordance with ASTM G21 and shall show resistance to mold growth for a period of 28 days for general use.
      15. Combustibility: Material shall have a maximum total heat release of 20 MJ/m2 and a maximum 125 kw/m2 peak rate of heat release 600 seconds after insertion when tested in accordance with ASTM E1354 at a radiant heat flux of 75 kw/m2 with the use of electric spark ignition. The sample shall be tested in the horizontal orientation.

        NOTE TO SPECIFIER: In-Place Performance Standards: Laboratory fire tests (ASTM E119) do not measure in-place durability during the design life of the building. For example, the work of other trades or air movement in return air plenums can affect the ability of the fireproofing to remain intact on the steel for the life of a building. The physical performance criteria recommended above establish minimum levels of acceptable in-place performance for structural steel fire protection. Performance criteria include resistance to damage, bond strength, air erosion and mold resistance protection. Monokote MK-6 meets or exceeds these recognized performance standards for long term fire protection of steel structures.

    2. Fire Resistance Classification: The spray applied fireproofing material shall have been tested and reported by Underwriters Laboratories Inc. in accordance with the procedures of ASTM E119 and shall be listed in the Underwriters Laboratories Fire Resistance Directory.
    3. Mixing water shall be clean, fresh, and suitable for domestic consumption and free from such amounts of mineral or organic substances as would affect the set of the fireproofing material. Provide water with sufficient pressure and volume to meet the fireproofing application schedule.
    1. Provide accessories to comply with manufacturer¹s recommendations and to meet fire resistance design and code requirements. Such accessories include, but are not limited to, any required or optional items such as Spatterkote SK-3; bonding agents, mechanical attachments; application aids such as metal lath, scrim, or netting; and Monokote Accelerator.
    1. Submit evidence that the cementitious fireproofing has been tested per ASTM E119 by Underwriters Laboratories Inc. Include evidence that the fire testing was sponsored by the manufacturer and that the material tested was produced at the manufacturer¹s facility under the supervision of Underwriters Laboratories Inc. personnel. Letters documenting classification status are not acceptable evidence of compliance with this section.

      NOTE TO SPECIFIER: Fire Testing Some cementitious fireproofing products have been classified by Underwriters Laboratories Inc. but have never been fire tested in accordance with ASTM E119 by the manufacturer. The above requirement assures that the specific products used have been fire tested in addition to being UL classified.


    1. All surfaces to receive spray applied fireproofing shall be provided free of oil, grease, paints/primers, loose mill scale, dirt or other foreign substances which may impair proper adhesion of the fireproofing to the substrate. Where necessary, cleaning or other corrections of surfaces to receive fireproofing shall be the responsibility of the supplier of the incompatible substrate.

      NOTE TO SPECIFIER: Primed/painted Substrates Fireproofing obtains its maximum bond strength when applied to bare, unprimed structural steel. Priming of interior structural steel is generally unnecessary, adds to the cost of the structure and may adversely affect the fire resistance rating and the bond of the fireproofing to the substrate. We recommend the following be added to the structural steel specification: ³Interior structural steel to receive application of spray applied fireproofing shall be free of primer and paint coatings.² Where members are to be exposed to a corrosive environment or exterior applications, a primer coating must be applied prior to the fireproofing to protect the underlying structural steel. The use of primer coatings with fireproofing is detailed in the UL Fire Resistance Directory and may require the use of bonding agents or mechanical attachment on beams, columns, tube and pipe steel to maintain the fire-resistive rating. The coating supplier should also certify the compatibility of the primer with portland cement based fireproofing. An on-site mock-up and bond test shall be performed on all unknown or un tested coatings prior to application of fireproofing to determine compatibility.
      Metal Decking Rolling compounds or lubricants are commonly used in the manufacturing of steel decking. These compounds may impair proper bonding of fireproofing to the substrate. Lubricants are available which, when use d in the appropriate quantities, will not adversely affect the bond of the fireproofing to the steel deck. The direct application of spray applied fireproofing is only permitted on UL classified painted steel decks. Classification is achieved by prior large-scale fire testing at UL with the specified fireproofing material. Mechanical attachment is required on unclassified painted steel decks to maintain the fire-resistive rating. The use of painted steel decks is detailed in the UL Fire Resistance Directory under Steel Floor and Form Units (CHWX). We recommend that Section 05300 Metal Decking states: ŒSteel deck manufacturer shall supply deck fire of lubricants or oils which would impair the adhesion of the spray applied fireproofing. The deck manufacturer shall certify that the primed steel deck is UL classified and has been fire tested with the appropriate fireproofing material.²

    2. Application of the fireproofing shall not begin until the contractor, applicator and fireproofing testing
    3. laboratory (inspector) have examined surfaces to receive fireproofing and determined that the surfaces are acceptable to receive the fireproofing material.

    1. Prior to application of the fireproofing material, a bonding agent, approved by the fireproofing material manufacturer, shall be applied to all concrete substrates to receive fireproofing.
    2. Other trades shall install clips, hangers, support sleeves and other attachments required to penetrate the fireproofing, prior to application of the fireproofing materials.
    3. Other trades shall not install ducts, piping, equipment or other suspended items until the fireproofing is complete.
    4. Complete placing of concrete on floor and roof decking prior to application of the fireproofing to the underside of steel deck and supporting beams and joists.
    5. On roof decks without a concrete cover, complete all roofing applications and roof mounted equipment installation prior to application of the fireproofing to the underside of roof decking and supporting beams and joists. Prohibit all roof traffic upon commencement of the fireproofing and until the fireproofing material is dry.
    6. Protection of permanently exposed walls or floors, or special surfaces: (Please indicate special protection requirements by location in a finish schedule on the plans or herein. Eliminate subparagraph F if not applicable).

      NOTE TO SPECIFIER: Surface Protection Application of spray applied fireproofing results in overspray onto surfaces in the immediate spray area. Where concrete, masonry or other surfaces subject to overspray need protection, detail that these specific surfaces shall be protected with masking, drop cloths or other satisfactory covering.

    1. Equipment and application procedures shall conform to the material manufacturer¹s application instructions.
    2. Post appropriate cautionary ³Slippery When Wet² signs in all areas in contact with wet fireproofing material. Erect appropriate barriers to prevent entry by non-fireproofing workers into the fireproofing spray and mixing areas and other areas exposed to wet fireproofing material.
    3. Apply a discontinuous textured spray of W. R. Grace & Co.-Conn. Spatterkote SK-3 in accordance with manufacturer¹s> instructions to all cellular steel floor units with flat plate on the bottom and to roof deck assemblies as required to meet the fire resistance ratings, before application of the Monokote fireproofing to these surfaces.
    1. The architect will select, and the owner will pay an independent testing laboratory to randomly sample and verify the thickness and the density of the fireproofing in accordance with provisions of ASTM E605, or the ³Inspection Procedure for Field-applied Sprayed Fire Protection Materials² as published by the Association of Wall and Ceiling Contractors International (AWCI), or the Uniform Building Code Standard No. 7- Where density samples are of irregular shape, a displacement method approved by Underwriters Laboratories Inc. shall be used to determine in-place fireproofing density.
    2. The architect will select, and the owner will pay an independent testing laboratory to randomly sample and verify the bond strength of the fireproofing in accordance with provisions of ASTM E736.
    3. The results of the above tests shall be made available to all parties at the completion of pre-designated areas which shall have been determined during the pre-job conference.
  • 3.05 CLEANING
    1. After the completion of fireproofing work, application equipment shall be removed.
    2. Except as detailed in Section 3.02 F, floors shall be left in a scraped condition.
  • 3.06 PATCHING
    1. All patching and repairing of spray applied fireproofing, due to damage by other trades, shall be performed with same materials under this section, and paid for by the trade(s) responsible for the damage.
    Element Hourly Rating Reference
    1. Columns ____________ ____________
    2. Floor Decks ____________ ____________
    3. Floor Supports ____________ ____________
    4. Roof Decks ____________ ____________
    5. Roof Supports ____________ ____________
    6. ( ) Restrained or ( ) Unrestrained (check one)

NOTE TO SPECIFIER: Restrained/Unrestrained Criteria Fire resistance rated assemblies tested in accordance with ASTM E119/UL 263 shall be considered unrestrained unless evidence satisfactory to the authority having jurisdiction is furnished by a registered design professional showing that the construction qualifies for a restrained classification.
Evidence shall demonstrate that an equivalent or greater degree of restraint will be provided to the building assembly during a fire condition to which was provided to the tested assembly during the fire test at UL. Restrained conditions, defined in the UL Fire Resistance Directory, for the fire test assemblies shall have an approximate stiffness (EI/L) of 700,000 Š 850,000 kip- in. along the test frame and remain constant throughout the fire test.