COMMITTEES ON NFPA BUILDING CODE

Transcription

1 COMMITTEES ON NFPA BUILDING CODE Technical Committee on Building Construction NFPA 5000, NFPA 220 and NFPA 221 ROP Meeting Agenda Wednesday, September 23, 2009 Embassy Suites Hotel Cleveland - Downtown 1. Call to Order The meeting will be called to order by the chair, Joe Versteeg, at 8:00 a.m. EDT on Wednesday, September 23, 2009 at the Embassy Suites Hotel Cleveland Downtown, OH. 2. Introduction of Attendees A current committee roster is attached. (Page 3). 3. Approval of Minutes Approve the October 2, 2007 Meeting Minutes. (Page 6). 4. NFPA 5000 Public Comment Preparation Review of NFPA 5000 Public Proposals. (Page 9). 1 of 36

2 5. NFPA 220 Public Proposal Preparation Review of NFPA 220 Public Proposals. (Page 29). 6. NFPA 221 Public Proposal Preparation Review of NFPA 221 Public Proposals. (Page 36). 7. New Business 8. Date and Location of next meeting 9. Adjournment AF/DM Attachments 2 of 36

3 Address List No Phone Building Construction Building Code Joseph H. Versteeg Chair Versteeg Associates 86 University Drive Torrington, CT International Fire Marshals Association E 10/27/2005 Farid Alfawakhiri American Iron and Steel Institute 594 Windham Lane Naperville, IL Alternate: Jonathan Humble 8/31/2009 Robert E. Solomon M 7/23/2008 Jesse J. Beitel Hughes Associates, Inc Commerce Drive, Suite 817 Baltimore, MD SE 4/3/2003 David S. Collins The Preview Group, Inc. 632 Race Street Cincinnati, OH American Institute of Architects SE 7/16/2003 Richard J. Davis FM Global 1151 Boston-Providence Turnpike PO Box 9102 Norwood, MA Alternate: Scott K. Anderson I 4/3/2003 Alan J. Dopart Willis of New Jersey 25 B Vreeland Road, Suite 212 PO Box 651 Florham park, NJ I 4/3/2003 Victor L. Dubrowski Code Consultants, Inc Borman Circle Drive St. Louis, MO SE 7/16/2003 David W. Frable US General Services Administration Public Buildings Service 665 Green Meadow Lane Genera, IL U 4/3/2003 Sam W. Francis American Forest & Paper Association 1 Dutton Farm Lane West Grove, PA American Forest & Paper Association Alternate: Dennis L. Pitts M 4/3/2003 Daniel F. Gemeny The RJA Group, Inc. Rolf Jensen & Associates, Inc. One Pointe Drive, Suite 210 Brea, CA Alternate: Renato R. Molina SE 4/3/2003 Joseph T. Holland Hoover Treated Wood Products 1225 North Halifax Avenue Daytona Beach, FL Alternate: David G. Bueche M 7/16/2003 Jeffrey M. Hugo National Fire Sprinkler Association, Inc West Borton Road Essexville, MI Alternate: Robert B. Treiber M 7/26/2007 Gerald Kelliher Washington Savannah River Company 117 Twin Creek Farm Road Aiken, SC U 4/3/ of 36 1

4 Address List No Phone Building Construction Building Code Gregory F. Masterson I 3/4/2008 Liberty Mutual Property 200 Galleria Parkway, SW Atllanta, GA Property Casualty Insurers Association of America Alternate: Lucas Pfannenstiel Joe McElvaney Phoenix Fire Department 200 West Washington Street, 3rd Floor Phoenix, AZ /31/2009 Robert E. Solomon E 10/27/2005 Carmen A. Rao City of Danbury Fire Department Deputy Fire Marshal 155 Deer Hill Avenue Danbury, CT E 10/4/2007 Brad Schiffer Brad Schiffer/Taxis, Inc. 520 Sugar Pine Lane Naples, FL SE 4/3/2003 Rick Thornberry M 7/16/2003 The Code Consortium, Inc Elks Way Napa, CA Alliance for Fire & Smoke Containment & Control, Inc. Alternate: Michael W. Ashley Robert A. Wessel Gypsum Association 6525 Belcrest Road, Suite 480 Hyattsville, MD Alternate: Michael A. Gardner M 4/3/2003 Peter J. Willse XL Global Asset Protection Services 100 Constitution Plaza Hartford, CT I 4/3/2003 Robert G. Backstrom Voting Alternate Underwriters Laboratories Inc. 333 Pfingsten Road Northbrook, IL Voting Alt. to UL Rep. RT 4/3/2003 Raymond J. Battalora Voting Alternate Aon/Schirmer Engineering Corporation 1701 North Collins Blvd., Suite 235 Richardson, TX Voting Alt. to Schirmer Rep. I 7/26/2007 William E. Koffel Voting Alternate Koffel Associates, Inc Meadowridge Road, Suite 101 Elkridge, MD Semiconductor Industry Association Voting Alt. to SIA Rep. U 7/16/2003 Stephen V. Skalko Voting Alternate Portland Cement Association 128 Summerfield Drive Macon, GA Voting Alt. to PCA Rep. M 4/3/2003 Scott K. Anderson Alternate FM Global 1151 Boston Providence Turnpike PO Box 9102 Norwood, MA : Richard J. Davis I 3/21/ of 36 2

5 Address List No Phone Building Construction Building Code Michael W. Ashley Alternate Alliance for Fire & Smoke Containment & Control Inc. 4 Brookhollow Road, SW Rome, GA : Rick Thornberry M 10/4/2007 David G. Bueche Alternate Hoover Treated Wood Products West Asbury Circle Lakewood, CO : Joseph T. Holland 8/31/2009 Robert E. Solomon M 11/2/2006 Michael A. Gardner Alternate Gypsum Association 6525 Belcrest Road, Suite 480 Hyattsville, MD : Robert A. Wessel M 7/16/2003 Jonathan Humble Alternate American Iron and Steel Institute 45 South Main Street, Suite 312 West Hartford, CT : Farid Alfawakhiri M 7/23/2008 Renato R. Molina Alternate The RJA Group, Inc. Rolf Jensen & Associates, Inc Greenview Drive, Suite 500 Laurel, MD : Daniel F. Gemeny SE 4/3/2003 Lucas Pfannenstiel Alternate Liberty Mutual Property College Blvd., Suite 220 Overland Park, KS Property Casualty Insurers Association of America : Gregory F. Masterson I 10/28/2008 Dennis L. Pitts Alternate American Forest & Paper Association American Wood Council 1721 West Plano Parkway, #224 Plano, TX American Forest & Paper Association : Sam W. Francis M 4/3/2003 Robert B. Treiber Alternate National Fire Sprinkler Association, Inc Vienna Parkway Centerville, OH : Jeffrey M. Hugo M 10/23/2003 Robert E. Solomon Staff Liaison National Fire Protection Association 1 Batterymarch Park Quincy, MA of 36 3

6 National Fire Protection Association 1 Batterymarch Park, Quincy, MA Phone: Fax: ROC Meeting Minutes Technical Committee on Building Construction October 2, 2007 Meeting Marriott Providence Downtown Providence, RI 1. Call to Order. The NFPA 5000 ROC meeting of the Building Construction Technical Committee was called to order by the acting Chair, Bonnie Manley, at 1:05 PM on Tuesday October 2, 2007 at the Marriott Providence Downtown. 2. Introduction of members and guests The Chair opened the meeting with welcoming remarks followed by self-introduction of the attendees. The following Technical Committee and Alternate members were present: TECHNICAL COMMITTEE MEMBERS PRESENT NAME Bonnie Manley, Acting Chair Jesse Beitel David Collins Richard Davis Victor Dubrowski Joseph Holland Jeffry Hugo REPRESENTING American Iron and Steel Institute Hughes Associates, Inc. American Institute of Architects FM Global Code Consultants, Inc. Hoover Treated Wood Products National Fire Sprinkler Association Meeting Minutes / Page 1 6 of 36

7 TECHNICAL COMMITTEE MEMBERS PRESENT (Continued) NAME William Koffel (Alt. to K. Reid) Joseph Messersmith Sarah Rice Dennis Pitts (Alt. to S. Francis) Robert Wessel REPRESENTING Semiconductor Industry Association Portland Cement Association Schirmer Engineering Corporation American Forest and Paper Association Gypsum Association GUESTS Guests in attendance during all or part of our meeting were: NAME Farid Alfawakhiri Josh Elvove William McHugh REPRESENTING American Iron and Steel Institute US General Services Association - GSA Firestop Contractors International Association The following NFPA staff members were in attendance: Kristin Collette Hossein Davoodi Robert Solomon NFPA Staff Liaison, NFPA NFPA TECHNICAL COMMITTEE MEMBERS NOT PRESENT The following Technical Committee and Alternates were absent: NAME REPRESENTING Joe Versteeg International Fire Marshals Association Robert Berhinig. Underwriters Laboratories Inc Robert Backstrom (Alt. to R. Berhinig) Underwriters Laboratories Inc. Alan Dopart Willis of New Jersey Bruce Edwards Property Casualty Insurers Association David Frable US General Services Administration Daniel Gemeny RJA Group, Inc. Gerald Kelliher Washington Savannah River Company Vickie Lovell (Alt. to R. Thornberry) Alliance for Fire & Smoke Containment Joe McElvaney Phoenix Fire Department Renato Molina (Alt. to D. Gemeny) RJA Group, Inc. Brad Schiffer Brad Schiffer/Taxis, Inc. Rick Thornberry Alliance for Fire & Smoke Containment Peter Willse Swiss Re, Global Asset Protection Meeting Minutes / Page 2 7 of 36

8 3. Approval of minutes of November 8, 2006 meeting The minutes of the November 8, 2006 meeting were approved as written and distributed. 4. Preparation of NFPA 5000, NFPA 220 and NFPA 221 Report on Comments: The Technical Committee reviewed and acted on 13 public comments received on NFPA 5000, 2 public comments on NFPA 220 and 1 public comment on NFPA committee comments were generated on NFPA The complete committee action on these proposals can be found in the Report on Comments letter ballot. 5. ASCE Blast Protection Document The Committee decided not to take an action until there is a chance to review the document. 6. New Business No new business was discussed. 7. Date and the location of the Next Meeting To be determined. 8. Meeting Adjournment Meeting was adjourned at 3:30 PM on Tuesday October 2, Meeting Minutes / Page 3 8 of 36

9 Report on Proposals June 2011 NFPA Log #CP25a Technical Committee on Building Construction, Review entire document to: 1) Update any extracted material by preparing separate proposals to do so, and 2) review and update references to other organizations documents, by preparing proposal(s) as required. To conform to the NFPA Regulations Governing Committee Projects Log #CP1a Technical Committee on Fundamentals,. An area of a building separated from the remainder of the building by construction having a fire resistance of at least 1 hour and having all communicating openings properly protected by an assembly having a fire resistance rating of at least 1 hour. [ 2008] This definition is the preferred definition from the NFPA Glossary of Terms. Changing the secondary definition to the preferred definition complies with the Glossary of Terms Project Log #15b Glossary of Terms Technical Advisory Committee / Marcelo Hirschler, A material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors, when subjected to fire or heat; materials that are reported as passing ASTM E 136, Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750 Degrees C, shall be considered noncombustible materials. A material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors, when subjected to fire or heat. Materials that are reported as passing ASTM E 136, Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750 Degrees C, shall be considered noncombustible materials. It is important to have consistent definitions of terms within NFPA. The term noncombustible material at present has several definitions, many of which are very similar. However, the preferred one is in NFPA 220. The Glossary Advisory Committee agreed on the definition recommended because it is in a single sentence and captures all essential elements. The existing definition in NFPA 5000 is different from the NFPA preferred definition, contained in NFPA 220. The NFPA 220 definition reads: Noncombustible Material. A substance that will not ignite and burn when subjected to a fire. In practice, the only thing that matters is whether the material complies with ASTM E 136 and that is what is being used in NFPA 211, in NFPA 101 and in NFPA 5000 (as well as in other codes) for classifying a material as noncombustible. The NFPA 220 definition does not address this and the NFPA 5000 and 101 definitions are contained in two sentences. It is therefore recommended, in order to improve consistency within NFPA documents that the definition from NFPA 5000 be revised to contain a single sentence and used as shown. Proposals are being made to other committees to adopt the same definition so as to obtain consistency in terminology. This proposal is similar to other proposals submitted so as to lead to more consistency within NFPA definitions. The committee was created by NFPA Standards Council to provide consistency in terminology throughout the NFPA documents. 1 9 of 36

10 Report on Proposals June 2011 NFPA Log #192 Joseph T. Holland, Hoover Treated Wood Products Revise text as follows: A pressure treated wood product impregnated with chemical by a pressure process or other means during manufacture, which is tested in accordance with ASTM E84 or UL723: has a listed flame spread index of 25 or less; and shows no evidence of significant progressive combustion when the test is continued for an additional 20-minute period; nor does the flame front progress more than 10.5 ft. (3.200 mm) beyond the centerline of the burner at any time during the test. Revision is more concise. Present section Is wordy. In the fifty years of recognition in building codes there is no wood product meeting the requirements for FRTW where adding the fire retardant to the wood is done during manufacture. This provision creates interpretation problems in the field. Revision will improve enforcement of the code of 36

11 Report on Proposals June 2011 NFPA Log #27c Marcelo M. Hirschler, GBH International / Rep. American Fire Safety Council Combustibility A material that is reported as passing ASTM E 136,, shall be considered a noncombustible material A material that is reported as complying with the pass/fail criteria of ASTM E 136 when tested in accordance with the test method and procedure in ASTM E 2652,, shall be considered a noncombustible material Where the term limited-combustible is used in this Code, it shall also include noncombustible Terminology Where the term limited-combustible is used in this Code, it shall also include noncombustible. The only generic information about noncombustibility in NFPA 5000 is the definition and its requirements based on ASTM E 136. NFPA definitions should not contain requirements. The information on combustibility should be in a generic section of the code, such as within General requirements. If this proposal, or a variation of it, is accepted then the definition of noncombustible can be changed and requirements placed in the text rather than in definitions. This proposal adds requirements for noncombustible (based on the traditional ASTM E 136 test) and also introduces a new test method that is used throughout the world for assessing noncombustibility. It also moves the information about limited combustible to the same section as the information about noncombustible. Recently ASTM E05, committee on fire standards, issued ASTM E , which uses a test method and procedure that is different from that in ASTM E 136,, but has the same objective. The test method in ASTM E 136 is similar to the test method in ASTM E 2652, but the apparatus is different. The test method, apparatus and procedure in ASTM E 2652 is the same as the one in ISO 1182, Reaction to fire tests for building products - Non-combustibility test, which is used as the test method for non combustibility in Europe, and in the maritime industry (both by the International Maritime Organization, IMO, and by the US Coast Guard). The reason ASTM E05 developed the ASTM E 2652 test method is because the apparatus used for ASTM E 136 is no longer being manufactured and spare parts for it are also no longer available. On the other hand the apparatus for ASTM E 2652 (or for ISO 1182) is being manufactured commercially and spare parts are available. In consequence it would be helpful to be able to test materials with either of the two test methods, while using the same pass/fail criteria. ASTM E 2652 does not have mandatory pass/fail criteria. A comparison study between the two test methods has been conducted, with three laboratories testing 13 materials with the apparatuses of ASTM E 136 and of ASTM E The results were compared in terms of the surface temperature rise and in terms of the classification of pass or fail. The variation in peak surface temperature rise typically ranged from 15 to 20 C (27 to 36 F) for temperature rises near the limiting value, for example, 30 ± 20 C (54 ± 36 F) rise. In terms of classification, the three laboratories agreed on a pass classification for four materials and on a fail classification for eight materials. One material was classified fail by one laboratory and pass by two laboratories. However, agreement would probably have been attained if the tests had not been terminated prematurely. The material was reported as passing the test if at least three of the four test specimens tested met the individual specimen criteria detailed in (i) through (iii): (i) the weight loss of the test specimen is 50 % or less; (ii) the recorded temperature rise of the test specimen is not, at any time during the test, higher than 30 C above the stabilized furnace temperature and (iii) there is no flaming from the test specimen after the first 30 seconds. One laboratory also performed a sensitivity study on the results from the ASTM E 1562 apparatus and concluded that the peak surface temperature rise was not sensitive to a change in furnace temperature level ranging from 730 C to 750 C or in specimen location (mid-height of furnace versus 20 mm (3/4 in.) below mid-height) of 36

12 Report on Proposals June 2011 NFPA Log #28 Marcelo M. Hirschler, GBH International / Rep. American Fire Safety Council New text to read as follows: Ceiling Cavity Plenums and Raised Floor Plenums. The space between the top of the finished ceiling and the underside of the floor or roof above and the space between the top of the finished floor and the underside of a raised floor Ceiling cavity plenums and raised floor plenums shall be permitted to be used to supply air to the occupied area or return and exhaust air from the occupied area, provided that the requirements of through are met Supplementary Materials for Air Distribution Systems * Pipe and duct insulation and coverings, duct linings, vapor retarder facings, adhesives, fasteners, tapes, and supplementary materials added to air ducts, plenums, panels, and duct silencers used in duct systems, unless otherwise provided for in or , shall have, in the form in which they are used, a maximum flame spread index of 25 without evidence of continued progressive combustion and a maximum smoke developed index of 50 when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or with ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials. Pipe and duct insulation and coverings, duct linings and their adhesives, and tapes shall use the specimen preparation and mounting procedures of ASTM E 2231, Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics The flame spread index and smoke developed index requirements of shall not apply to air duct weatherproof coverings where they are located entirely outside of a building, do not penetrate a wall or roof, and do not create an exposure hazard Smoke detectors required by shall not be required to meet flame spread index or smoke developed index requirements Closure systems for use with rigid and flexible air ducts tested in accordance with ANSI/UL 181, Standard for Safety Factory-Made Air Ducts and Air Connectors, shall have been tested, listed, and used in accordance with the conditions of their listings, in accordance with one of the following: (1) ANSI/UL 181A, Standard for Safety Closure Systems for Use with Rigid Air Ducts (2) ANSI/UL 181B, Standard for Safety Closure Systems for Use with Flexible Air Ducts and Air Connectors Coverings and linings for air ducts, pipes, plenums, and panels, including all pipe and duct insulation materials, shall not flame, glow, smolder, or smoke when tested in accordance with ASTM C 411, Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation, at the temperature to which they are exposed in service. In no case shall the test temperature be below 121 C (250 F) Air duct coverings shall not extend through walls or floors that are required to be fire stopped or required to have a fire resistance rating, unless such coverings meet the requirements of NFPA 80, Standard for Fire Doors and Other Opening Protectives Air duct linings shall be interrupted at fire dampers to prevent interference with the operation of devices Air duct coverings shall not be installed so as to conceal or prevent the use of any service opening * Wall or ceiling finish in plenums shall comply with Wall or Ceiling Finish in Plenums Wall or ceiling finish in plenums, except as indicated in , shall be noncombustible or shall exhibit a flame spread index of 25 or less and a smoke developed index of 50 or less, when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use Foam plastic insulation shall not be used as wall or ceiling finish in plenums, unless the insulation meets one of the criteria shown in , , or The foam plastic insulation material both (a) exhibits a flame spread index of 25 or less and a smoke developed index of 50 or less, when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use, and (b) complies with the following criteria: (1) flame does not spread to the ceiling during the 40 kw exposure, (2) flame does not spread to the outer extremities of the sample, (3) flashover does not occur, (4) the peak heat release rate does not exceed 800 kw, and (5) the total smoke release does not exceed 1000 m 2 (1196 yd 2 ) when tested in accordance with NFPA 286, Standard Methods of Fire Tests for Evaluating Contribution of Wall and Ceiling Interior Finish to Room Fire Growth (where the testing shall be 4 12 of 36

13 Report on Proposals June 2011 NFPA 5000 performed on the finished foam plastic assembly related to the actual end-use configuration and on the maximum thickness intended for use) The foam plastic insulation material both (a) is covered by corrosion-resistant steel having a base metal thickness of not less than in. (0.4 mm) and (b) exhibits a flame spread index of 75 or less and a smoke developed index of 450 or less, when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use The foam plastic insulation material both (a) is separated from the plenum by an approved thermal barrier of 12.7 mm (0.5 in.) gypsum wallboard or equivalent material that will limit the average temperature rise of the unexposed surface to not more than 139 C (250 F) after 15 minutes of fire exposure, complying with the standard time-temperature curve of NFPA 251, Standard Methods of Tests of Fire Resistance of Building Construction and Materials, and (b) exhibits a flame spread index of 75 or less and a smoke developed index of 450 or less when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use. A ASTM E 2231, Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics, is a practice that describes, in mandatory language, standard methods for specimen preparation and mounting of pipe and duct insulation systems using the Steiner tunnel test method (contained in NFPA 255, Standard Method of Test of Surface Burning Characteristics of Building Materials, and in ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials). It requires that the entire system that is used in the field be tested, including the insulation itself, any adhesive, and/or any jacket used. The practice recognizes that pipe or duct insulation systems can be composed of a single product or of a combination of products, and that these have a variety of physical characteristics, including that they may or may not be self-supporting. A It is the intent of the technical committee on air conditioning that wall and ceiling finish in ceiling plenums comply with and not Ceiling Cavity Plenum. The space between the top of the finished ceiling and the underside of the floor or roof above where used to supply air to the occupied area, or to return or exhaust air from the occupied area. [90A] Raised Floor Plenum. The space between the top of the finished floor and the underside of a raised floor where used to supply air to the occupied area, or to return or exhaust air from the occupied area. [90A] The requirements for materials in plenums (sections through ) have been extracted from an old edition of NFPA 90A and need to be revised to the 2009 edition. Note that NFPA 90A has separate requirements for ceiling cavity plenums and raised floor plenums; these terms are not defined in NFPA 5000 and need to be defined. Two additional sections on materials in plenums, supplementary materials for air distribution systems and foam plastic materials used as interior finish on walls and ceilings in plenums should also be added to this section, as recommended in this proposal. This proposal does not revise the extracted text but adds the text that needs to be extracted and is missing. The definitions of ceiling cavity plenum and raised floor plenum are added and the charging paragraph is revised so that the term is used instead of a definition. Note that the published version of NFPA 90A contains an errata and states that Wall or ceiling finish in plenums shall comply with when it clearly means Wall or ceiling finish in plenums shall comply with since section is the section on Wall or Ceiling Finish in Plenums. The extract has been made using the correct reference of 36

14 Report on Proposals June 2011 NFPA Log #29a Marcelo M. Hirschler, GBH International / Rep. American Fire Safety Council Any material that is subject to an increase in flame spread index rating or smoke developed index beyond the limits herein established through the effects of age, moisture, or other atmospheric conditions shall not be permitted, unless such material complies with one of the following: (1) Duct and pipe insulation, coverings, and linings contained in plenums for buildings of all types of construction shall comply with the requirements of or , as appropriate. (2) Foamed plastic insulation, other than duct and pipe insulation, coverings, and linings contained in plenums shall comply with Chapter 48. The space between the top of the finished ceiling and the underside of the floor or roof above and the space between the top of the finished floor and the underside of a raised floor Ceiling cavity plenums and raised floor plenums shall be permitted to be used to supply air to the occupied area or return and exhaust air from the occupied area, provided that the requirements of through are met. Materials within a ceiling cavity plenum exposed to the airflow shall be noncombustible or comply with one of the following. [90A] Electrical wires and cables and optical fiber cables shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 60 in. (1500 mm) or less when tested in accordance with NFPA 262, Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces or shall be installed in metal raceways, metal sheathed cable, or totally enclosed non-ventilated busway. [90A: ] Pneumatic tubing for control systems shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 60 in. (1500 mm) or less when tested in accordance with ANSI/UL 1820, Standard for Safety Fire Test of Pneumatic Tubing for Flame and Smoke Characteristics. [90A: ] Nonmetallic fire sprinkler piping shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 60 in. (1500 mm) or less when tested in accordance with ANSI/UL 1887, Standard for Safety Fire Test of Plastic Sprinkler Pipe for Visible Flame and Smoke Characteristics. [90A: ] Optical-fiber and communication raceways shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 60 in. (1500 mm) or less when tested in accordance with ANSI/UL 2024, Standard for Optical-Fiber and Communications Cable Raceway. [90A: ] Loudspeaker recessed lighting fixture and other electrical equipment with combustible enclosures, including their assemblies and accessories, cable ties, and other discrete products shall be permitted in the ceiling cavity plenum where listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a peak heat release rate of 100 kw or less when tested in accordance with UL 2043, Standard for Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces. [90A: ] Supplementary materials for air distribution systems shall be permitted when complying with the provisions of of NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems. [90A: ] Smoke detectors shall not be required to meet the provisions of [90A: ] The space between the top of the finished ceiling and the underside of the floor or roof above shall be permitted to be used to supply air to the occupied area, or return or exhaust air from the occupied area, provided that the conditions in through are met. The integrity of the fire and smoke stopping for penetrations shall be maintained. Light diffusers, other than those made of metal or glass, used in air-handling light fixtures shall be listed and marked Fixture Light Diffusers for Air-Handling Fixtures. The temperature of air delivered to these plenums shall not exceed 121 C (250 F). Materials used in the construction of a ceiling plenum shall be noncombustible or shall be limited combustible having a maximum smoke developed index of 50, except as permitted in through 6 14 of 36

15 Report on Proposals June 2011 NFPA , and shall be suitable for continuous exposure to the temperature and humidity conditions of the environmental air in the plenum. Materials used in the construction of a plenum space between the ceiling and roof (or floor) of other than the fire-resistive assemblies covered in shall be permitted as specified in and The ceiling material shall have a flame spread index of not more than 25 and a smoke developed index not greater than 50. All surfaces, including those that would be exposed by cutting through the material in any way, shall meet these requirements. The ceiling materials shall be supported by noncombustible material. Where the plenum is a part of a floor-ceiling or roof-ceiling assembly that has been tested or investigated and assigned a fire resistance rating of 1 hour or more, the assembly shall meet the requirements of Materials within a ceiling cavity plenum exposed to the airflow shall be noncombustible or comply with one of the following. Electrical wires and cables and optical fiber cables shall be listed as having a maximum peak optical density of 0.50 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with NFPA 262, Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces, or shall be installed in metal raceways, metal sheathed cable, or totally enclosed non-ventilated busway. Pneumatic tubing for control systems shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with ANSI/UL 1820, Standard for Safety Fire Test of Pneumatic Tubing for Flame and Smoke Characteristics. Nonmetallic fire sprinkler piping shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with ANSI/UL 1887, Standard for Safety Fire Test of Plastic Sprinkler Pipe for Visible Flame and Smoke Characteristics. Optical fiber and communication raceways shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with ANSI/UL 2024, Standard for Safety Optical-Fiber and Communications Cable Raceway. Loudspeakers, recessed lighting fixtures, and other electrical equipment with combustible enclosures, including their assemblies and accessories, cable ties, and other discrete products shall be permitted in the ceiling cavity plenum where listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a peak heat release rate of 100 kw or less when tested in accordance with UL 2043, Standard for Safety Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces. Supplementary materials for air distribution systems shall be permitted when complying with the provisions of Smoke detectors shall not be required to meet the provisions of this section. Air ducts complying and air connectors complying with NFPA 90A shall be permitted. Materials that, in the form in which they are used, have a potential heat value not exceeding 8141 kj/kg (3500 Btu/lb), where tested in accordance with NFPA 259, Standard Test Method for Potential Heat of Building Materials, and include either of the following: (1) Materials having a structural base of noncombustible material, with a surfacing not exceeding a thickness of 3.2 mm ( in.) that has a flame spread index not greater than 50 (2) Materials, in the form and thickness used, having neither a flame spread index greater than 25 nor evidence of continued progressive combustion, and of such composition that surfaces that would be exposed by cutting through the material on any plane would have neither a flame spread index greater than 25 nor evidence of continued progressive combustion, when tested in accordance with ASTM E 84, Standard Test Method of Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method of Surface Burning Characteristics of Building Materials. The accessible portion of abandoned materials exposed to airflow shall be removed. Raised Floor Plenum Materials Combustibility. Materials within a raised floor plenum exposed to the airflow shall comply with [90A] The space between the top of the finished floor and the underside of a raised floor shall be permitted to be used to supply air to the occupied area, or return or exhaust air from or return and exhaust air from the occupied area, provided that the conditions in through are met. The integrity of the firestopping for penetrations shall be maintained of 36

16 Report on Proposals June 2011 NFPA 5000 The temperature of air delivered to these plenums shall not exceed 121 C (250 F). Materials used in the construction of a raised floor plenum shall be noncombustible or limited combustible materials, shall have a maximum peak smoke developed index of 50, and shall be suitable for continuous exposure to the temperature and humidity conditions of the environmental air in the plenum. Materials within a raised floor plenum exposed to the airflow shall comply with through , as applicable. Electrical wires and cables and optical fiber cables shall be listed as having a maximum peak optical density of 0.50 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with NFPA 262, Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces, or shall be installed in metal raceways, metal sheathed cable, or totally enclosed nonventilated busway. Pneumatic tubing for control systems shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with ANSI/UL 1820, Standard for Safety Fire Test of Pneumatic Tubing for Flame and Smoke Characteristics. Nonmetallic fire sprinkler piping shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with ANSI/UL 1887, Standard for Safety Fire Test of Plastic Sprinkler Pipe for Visible Flame and Smoke Characteristics. Optical fiber and communication raceways shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with ANSI/UL 2024, Standard for Safety Optical-Fiber and Communication Cable Raceway. Cables installed within these raceways shall be listed as plenum cable in accordance with the requirements in Raised floors, intermachine cables, electrical wires, listed plenum communication and optical-fiber raceways, and optical-fiber cables in computer/data processing rooms where these rooms are designed and installed in accordance with NFPA 75, Standard for the Protection of Information Technology Equipment, shall be permitted. Loudspeakers, recessed lighting fixtures, and other electrical equipment with combustible enclosures, including their assemblies and accessories, cable ties, and other discrete products, shall be permitted in the raised floor plenum where listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a peak heat release rate of 100 kw or less when tested in accordance with UL 2043, Standard for Safety Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces. Air ducts complying and air connectors complying with NFPA 90A shall be permitted. Materials that, in the form in which they are used, have a potential heat value not exceeding 3500 Btu/lb (8141 kj/kg), where tested in accordance with NFPA 259, Standard Test Method for Potential Heat of Building Materials, and include either of the following: (1) Materials having a structural base of noncombustible material, with a surfacing not exceeding a thickness of in. (3.2 mm) that has a flame spread index not greater than 50 (2) Materials, in the form and thickness used, having neither a flame spread index greater than 25 nor evidence of continued progressive combustion, and of such composition that surfaces that would be exposed by cutting through the material on any plane would have neither a flame spread index greater than 25 nor evidence of continued progressive combustion, when tested in accordance with ASTM E 84, Standard Test Method of Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials. Smoke detectors shall not be required to meet the requirements of Supplementary materials for air distribution systems shall be permitted when complying with The accessible portion of abandoned materials exposed to airflow shall be removed. Fire-retardant-treated wood complying with Chapter 45 shall be permitted. The integrity of the fire stopping for penetrations shall be maintained. Light diffusers, other than those made of metal or glass, used in air-handling light fixtures shall be listed and marked as follows: Fixture Light Diffusers for Air-Handling Fixtures Plenum Air Temperature. The temperature of air delivered to plenums shall not exceed 250 F (121 C). Plenum Materials Exposure. Materials used in the construction of a plenum shall be suitable for continuous exposure to the temperature and humidity conditions of the environmental air in the plenum. Ceiling Plenum Tested Assembly. Where the plenum is a part of a floor/ceiling or roof/ceiling assembly that has been tested or investigated and assigned a fire resistance rating of 1 hour or more, and the assembly contains air ducts and openings for air ducts, all the materials and the construction of the assembly, including the air duct materials 8 16 of 36

17 Report on Proposals June 2011 NFPA 5000 and the size and protection of the openings, shall conform with the design of the fire resistance rated assembly, as tested in accordance with NFPA 251, Standard Methods of Tests of Fire Resistance of Building Construction and Materials; ASTM E 119, Standard Test Methods for Fire Tests of Building Construction and Materials; or UL 263, Standard for Fire Tests of Building Construction and Materials. Pipe and duct insulation and coverings, duct linings, vapor retarder facings, adhesives, fasteners, tapes, and supplementary materials added to air ducts, plenums, panels, and duct silencers used in duct systems, unless otherwise provided for in or , shall have, in the form in which they are used, a maximum flame spread index of 25 without evidence of continued progressive combustion and a maximum smoke developed index of 50 when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or with ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials. Pipe and duct insulation and coverings, duct linings and their adhesives, and tapes shall use the specimen preparation and mounting procedures of ASTM E 2231, Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics. The flame spread index and smoke developed index requirements of shall not apply to air duct weatherproof coverings where they are located entirely outside of a building, do not penetrate a wall or roof, and do not create an exposure hazard. Smoke detectors required by shall not be required to meet flame spread index or smoke developed index requirements. Closure systems for use with rigid and flexible air ducts tested in accordance with ANSI/UL 181, Standard for Safety Factory-Made Air Ducts and Air Connectors, shall have been tested, listed, and used in accordance with the conditions of their listings, in accordance with one of the following: (1) ANSI/UL 181A, Standard for Safety Closure Systems for Use with Rigid Air Ducts (2) ANSI/UL 181B, Standard for Safety Closure Systems for Use with Flexible Air Ducts and Air Connectors Coverings and linings for air ducts, pipes, plenums, and panels, including all pipe and duct insulation materials, shall not flame, glow, smolder, or smoke when tested in accordance with ASTM C 411, Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation, at the temperature to which they are exposed in service. In no case shall the test temperature be below 121 C (250 F). Air duct coverings shall not extend through walls or floors that are required to be fire stopped or required to have a fire resistance rating, unless such coverings meet the requirements of NFPA 80, Standard for Fire Doors and Other Opening Protectives. Air duct linings shall be interrupted at fire dampers to prevent interference with the operation of devices. Air duct coverings shall not be installed so as to conceal or prevent the use of any service opening. Wall or ceiling finish in plenums shall comply with Wall or ceiling finish in plenums, except as indicated in , shall be noncombustible or shall exhibit a flame spread index of 25 or less and a smoke developed index of 50 or less, when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use. Foam plastic insulation shall not be used as wall or ceiling finish in plenums, unless the insulation meets one of the criteria shown in , , or The foam plastic insulation material both (a) exhibits a flame spread index of 25 or less and a smoke developed index of 50 or less, when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use, and (b) complies with the following criteria: (1) flame does not spread to the ceiling during the 40 kw exposure, (2) flame does not spread to the outer extremities of the sample, (3) flashover does not occur, (4) the peak heat release rate does not exceed 800 kw, and (5) the total smoke release does not exceed 1000 m 2 (1196 yd 2 ) when tested in accordance with NFPA 286, Standard Methods of Fire Tests for Evaluating Contribution of Wall and Ceiling Interior Finish to Room Fire Growth (where the testing shall be performed on the finished foam plastic assembly related to the actual end-use configuration and on the maximum thickness intended for use). The foam plastic insulation material both (a) is covered by corrosion-resistant steel having a base metal thickness of not less than in. (0.4 mm) and (b) exhibits a flame spread index of 75 or less and a smoke developed index of 450 or less, when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use. The foam plastic insulation material both (a) is separated from the plenum by an approved thermal barrier 9 17 of 36

18 Report on Proposals June 2011 NFPA 5000 of 12.7 mm (0.5 in.) gypsum wallboard or equivalent material that will limit the average temperature rise of the unexposed surface to not more than 139 C (250 F) after 15 minutes of fire exposure, complying with the standard time-temperature curve of NFPA 251, Standard Methods of Tests of Fire Resistance of Building Construction and Materials, and (b) exhibits a flame spread index of 75 or less and a smoke developed index of 450 or less when tested in accordance with ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard Test Method for Surface Burning Characteristics of Building Materials, at the maximum thickness intended for use. ASTM E 2231, Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics, is a practice that describes, in mandatory language, standard methods for specimen preparation and mounting of pipe and duct insulation systems using the Steiner tunnel test method (contained in NFPA 255, Standard Method of Test of Surface Burning Characteristics of Building Materials, and in ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials). It requires that the entire system that is used in the field be tested, including the insulation itself, any adhesive, and/or any jacket used. The practice recognizes that pipe or duct insulation systems can be composed of a single product or of a combination of products, and that these have a variety of physical characteristics, including that they may or may not be self-supporting. It is the intent of the technical committee on air conditioning that wall and ceiling finish in ceiling plenums comply with and not Ceiling Cavity Plenum. The space between the top of the finished ceiling and the underside of the floor or roof above where used to supply air to the occupied area, or to return or exhaust air from the occupied area. [90A] Raised Floor Plenum. The space between the top of the finished floor and the underside of a raised floor where used to supply air to the occupied area, or to return or exhaust air from the occupied area. [90A] The requirements for materials in plenums (Sections through ) have been extracted from an old edition of NFPA 90A and need to be revised to the 2009 edition. Note that NFPA 90A has separate requirements for ceiling cavity plenums and raised floor plenums; these terms are not defined in NFPA 5000 and need to be defined. Two additional sections on materials in plenums, supplementary materials for air distribution systems and foam plastic materials used as interior finish on walls and ceilings in plenums should also be added to this section, as recommended in this proposal. This proposal is complete in that it revises the extracted text as well as adding the text that needs to be extracted and is missing. The definitions of ceiling cavity plenum and raised floor plenum are added and the charging paragraph is revised so that the term is used instead of a definition. Note that the published version of NFPA 90A contains an errata and states that Wall or ceiling finish in plenums shall comply with when it clearly means Wall or ceiling finish in plenums shall comply with since section is the section on Wall or Ceiling Finish in Plenums. The extract has been made using the correct reference. Two added changes are incorporated into this proposal: (a) flame spread rating is being amended to flame spread index (as this is the appropriate term) and (b) the reference to is being amended to refer to both sections in the revised code, one for ceiling cavity plenum and one for raised floor plenum of 36