home *** CD-ROM | disk | FTP | other *** search
- SECTION 09831
-
- FIRE-RATED ACOUSTICAL BARRIERS
- NOTE ** This section is based on the products of the
- Homasote Company, which is located at:
- NOTE ** P.O. Box 7240
- NOTE ** West Trenton, NJ 08628-0240
- NOTE ** Tel: (609) 883-3300
- NOTE ** Fax: (609) 530-1584
- NOTE ** Internet address: http://www.homasote.com
- NOTE ** For local rep contact: Sweet's Buyline 1-800-
- 892-1165 (#0878)
- NOTE ** The Homasote Company manufactures various products
- for the building industry. This section covers
- only a part of their product line: "N.C.F.R.(R)
- Homasote" and "N.C.F.R.(R) Wall Shield" are Class A
- fire-rated panels used for sound-deadening and
- tackable applications where fire ratings are
- important. These products are made from 100
- percent recycled, all wood fiber material
- completely impregnated with fire retardant chemical
- ingredients, treated to resist moisture, termites,
- and fungi, and compressed into high density,
- structural exterior building board. The resulting
- product contain no asbestos or urea formaldehyde
- additives and offer constant insulation against
- air, moisture, and noise penetration.
- NOTE **
- NOTE ** See The Homasote Company's other sections for non-
- rated acoustical barriers, wood roof decking,
- fiberboard underlayment, and acoustical wall
- panels.
- NOTE **
- NOTE ** SECTION 09831 - FIRE-RATED ACOUSTICAL BARRIERS,
- Copyright 1998, The Architect's Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Select paragraphs below applicable to project.
-
- A. Tackable wall panels.
-
- B. Ceiling paneling.
-
- C. Display wall.
-
- D. Tack board.
-
- E. Tackable substrate for fire-rated wall covering.
-
- F. Wall sheathing.
-
- G. Noise-deadening resilient carpet underlayment.
-
- H. Soffits.
-
- I. Fire-rated garage interiors.
-
- J. Interior siding.
-
- K. Exterior siding.
-
- L. _________________________________.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete sections below not relevant to this project;
- add others as required.
-
- A. Section 06100 - Rough Carpentry.
-
- B. Section 07260 - Vapor Retarders.
-
- C. Section 07460 - Siding.
-
- D. Section 09110 - Non-Load-Bearing Wall Framing.
-
- E. Section 09250 - Gypsum Board.
-
- F. Section 09680 - Carpet.
-
- G. Section 09900 - Painting.
-
- H. Section 10300 - Fireplaces and Stoves.
-
- I. Section _____ - _________________________.
-
- 1.3 REFERENCES
- NOTE ** Delete references from the list below that are not
- actually required by the text of the edited
- section; add others as required.
-
- A. ASTM E 84 - Test Method for Surface Burning
- Characteristics of Building Materials.
-
- B. ASTM D 1037 - Test Methods of Evaluating Properties of
- Wood-Base Fiber and Particle Panel Materials.
-
- C. UL - Report No. R-5268.
-
- D. UL Canada - File No. CR909.
-
- E. ____________________________________.
-
- 1.4 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's catalog data, detail
- sheets, and specifications.
-
- C. Quality Assurance/Control Submittals:
- 1. Manufacturer's installation instructions.
-
- 1.5 QUALITY ASSURANCE
-
- A. Manufacturer's Qualifications:
- 1. Minimum 10 years experience in producing fire-rated
- panels of the type specified herein.
-
- 1.6 DELIVERY, STORAGE, AND HANDLING
-
- A. Deliver materials in manufacturer's original packages.
-
- B. Inspect the materials upon delivery to assure that
- specified products have been received.
-
- C. Report damaged material immediately to the delivering
- carrier and note such damage on the carrier's freight
- bill of lading.
-
- D. Store materials in a dry place, indoors, or on raised
- platform protected from weather damage.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Acceptable Manufacturer: Homasote Company, P.O. Box
- 7240, West Trenton, NJ 08628-0240; ASD. Tel: (609) 883-
- 3300, Fax: (609) 530-1584, Internet address:
- http://www.homasote.com; For local rep contact: Sweet's
- Buyline 1-800-892-1165 (#0878).
-
- B. Requests for substitutions will be considered in
- accordance with provisions of Section 01600.
- NOTE ** Delete paragraph above or below; coordinate with
- Division 1 requirements.
-
- C. Substitutions: Not permitted.
-
- D. Provide all fire-rated panels from a single manufacturer.
-
- 2.2 MATERIALS
- NOTE ** Select type of fire-rated panel from the two types
- below; delete type not required for the project.
- NOTE **
- NOTE ** Nominal sizes of N.C.F.R.(R) Homasote panels are 4
- by 4 feet (1.219 by 1.219 m), 4 by 8 feet (1.219 by
- 2.438 m), 4 by 10 feet (1.219 by 3.048 m), 4 by 12
- feet (1.219 by 3.658 m), and 8 by 12 feet (2.438 by
- 3.658 m). Other sizes are available on request.
-
- A. N.C.F.R.(R) Homasote: Class A fire rated, physical
- properties as follows:
- 1. Thickness: 1/2 inch (13 mm).
- 2. Density: 34-40 pcf (544-640 kg/cubic m).
- 3. Tensile Strength parallel to surface: 400-700 psi
- (2,755-4,830 kPa) minimum.
- 4. Transverse M.O.R.: 600-950 psi (4,140-6,555 kPa)
- minimum.
- 5. Hardness (Janka Ball): 275 lbs. (124 kg) minimum.
- 6. Water Absorption by Volume; ASTM D 1037:
- a. 2 hour immersion: 5 percent maximum.
- b. 24 hour immersion): 14 percent maximum.
- 7. Expansion, 50 to 90 percent relative humidity: 0.30
- percent.
- 8. R-value: 0.85 (0.015).
- 9. Noise Reduction Coefficient: 0.20.
- 10. Finish: Natural.
- 11. Fire Hazard Classification: Flame Spread 25, Fuel
- Contributed 0, Smoke Developed 20, per UL Building
- Materials Index.
- NOTE ** Nominal sizes of N.C.F.R.(R) Wall Shield panels are
- 4 by 4 feet (1.219 by 1.219 m), 4 by 8 feet (1.219
- by 2.438 m), 4 by 10 feet (1.219 by 3.048 m), and 4
- by 12 feet (1.219 by 3.658 m).
-
- B. N.C.F.R.(R) Wall Shield: Class A fire rated, physical
- properties as follows:
- 1. Thickness: 1/2 inch (13 mm).
- 2. Density: 34-40 pcf (544-640 kg/cubic m).
- 3. Tensile Strength parallel to surface: 400-700 psi
- (2,755-4,830 kPa) minimum.
- 4. Transverse M.O.R.: 600-950 psi (4,140-6,555 kPa)
- minimum.
- 5. Hardness (Janka Ball): 275 lbs. (124 kg) minimum.
- 6. Water Absorption by Volume; ASTM D 1037:
- a. 2 hour immersion: 5 percent maximum.
- b. 24 hour immersion): 14 percent maximum.
- 7. Expansion, 50 to 90 percent relative humidity: 0.30
- percent.
- 8. R-value: 0.85 (0.015).
- 9. Noise Reduction Coefficient: 0.20.
- 10. Finish: Natural.
-
- 2.3 ACCESSORIES
- NOTE ** Installation accessories are dependent on
- substrates and installation methods as recommended
- by the manufacturer; select from the following
- paragraphs accordingly.
-
- A. Metal Frame Clips: Manufacturer's standard clip for
- securing panels to framing.
-
- B. Adhesive: APA approved panel adhesive.
-
- C. Nails: Length as required to penetrate wood framing 3/4
- inch (19 mm) minimum.
-
- D. Nails: Finishing nails, length as required to penetrate
- wood framing 3/4 inch (19 mm) minimum.
-
- E. Screws:
- 1. Wood Framing: Coarse thread drywall type wood screw,
- length as required to penetrate framing 3/4 inch (19
- mm) minimum.
- 2. Metal Framing: 22-25 gage, drywall type steel screw.
- 3. Metal Framing: 20 gage or heavier, self-tapping
- drywall type steel screw.
-
-
- PART 3 EXECUTION
-
- 3.1 EXAMINATION
-
- A. Examine substrates upon which work will be installed.
- NOTE ** Delete the following paragraph if panels are
- applied only as carpet underlayment.
- NOTE **
- NOTE ** To prevent condensation damage within walls, it is
- good building practice to install a vapor retarder
- in buildings where the January temperature falls
- below 40 degrees F (4.5 degrees C).
-
- B. Verify framing member spacing complies with
- manufacturer's requirements depending on substrates and
- installation methods.
-
- C. Verify environmental conditions are, and will continue to
- be, maintained in accordance with manufacturer's
- recommendations.
-
- D. Coordinate with responsible entity to perform corrective
- work on unsatisfactory substrates or conditions.
-
- E. Starting work by installer is acceptance of substrate and
- environmental conditions.
-
- 3.2 PREPARATION
-
- A. Follow manufacturer's instructions by separating and
- allowing panels to be exposed to environmental
- temperature and humidity conditions for not less than 24
- hours before start of installation.
-
- B. Precondition panels larger than 4 by 8 feet (1.219 by
- 2.438 m) panels by sprinkling with water and stacking wet
- side up overnight.
-
- 3.3 INSTALLATION
-
- NOTE ** Homasote requires wall framing at 16 inches (400
- mm) o.c. for 1/2 inch (13 mm) boards. Edges and
- ends are required to align with framing members or
- be blocked for all methods. Verify that
- appropriate framing section or drawing notes
- comply.
-
- A. Follow manufacturer's instructions for cutting and
- installation of fire rated panels.
-
- B. Install panels in dry condition only.
- NOTE ** Select applications from paragraphs below.
- NOTE **
- NOTE ** Any wood or hardboard finish paneling, or metal or
- vinyl siding applied over N.C.F.R.(R) Homasote must
- be installed with nails of sufficient length to
- penetrate Homasote and anchor into framing 1 inch
- (25 mm) minimum.
- NOTE **
- NOTE ** Any component added to or structurally combined
- with N.C.F.R.(R) Homasote when used as siding,
- paneling, or underlayment, must be Fire Hazard
- Classification to maintain continuity.
-
- C. N.C.F.R.(R) Homasote Exterior Applications:
- 1. Apply panels over wood sheathing or direct to framing
- by glue-nailing or with nails only.
- 2. Allow 3/16 inch (4.7 mm) gap at exposed joints, seal
- with calking, and cover with battens.
-
- D. N.C.F.R.(R) Homasote Interior Applications:
- 1. Apply panels direct to framing or solid furring by
- glue-nailing or with nails only.
- 2. Apply panels to old masonry walls by glue-nailing,
- provided walls are flat and solid.
- 3. Allow 3/16 inch (4.7 mm) gap at butt joints, 3/8 inch
- (9.5 mm) gap at floor, ceiling, and abutting framing.
-
- E. N.C.F.R.(R) Homasote Underlayment Applications on Wood
- Sub-Flooring:
-
- NOTE ** Where used as underlayment, fire rating can be
- maintained only when fire rated carpet and pad are
- used.
- NOTE **
- NOTE ** Sub-floor must be flat (not cupped), dry, level,
- and securely fastened to joists.
- 1. Shim or sand sub-floor as necessary to provide a flat
- surface continuity for panels.
- 2. Apply underlayment panels with APA approved decking
- adhesive and nails, or with nails only.
- 3. Allow 3/16 inch (4.7 mm) gap at abutting edges; 3/8
- inch (9.5 mm) space at walls and partitions.
- NOTE ** N.C.F.R.(R) Wall Shield is for use with UL listed
- solid-fuel type room heaters and listed fireplace
- stoves in residential type structures. It is
- approved for use with vertical flue installations
- only, not for use where flue passes through panels.
-
- F. N.C.F.R.(R) Wall Shield Applications:
- NOTE ** Locations and attachment of non-combustible spacers
- and method of application of panels depends on type
- of finish to be used on panel face. Consult
- manufacturer's recommendations.
- 1. Space panels 1 inch (25 mm) from wall with non-
- combustible spacers attached to wall and spaced as
- recommended by panel manufacturer.
- 2. Space panels 1 inch (25 mm) minimum and 3 inches (75
- mm) maximum above floor and below ceiling.
- 3. Extend panels 8 inches (203 mm) minimum each side of
- projected area of back of stove or flue.
-
- 3.4 ADJUSTING AND CLEANING
-
- A. Follow manufacturer's instructions for repairing damaged
- panels.
-
- B. Replace panels that cannot be repaired to "as new"
- condition.
-
-
- END OF SECTION
-