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- SECTION 06072
-
- FIRE-RETARDANT TREATMENT OF WOOD
- NOTE ** This section is based on products manufactured by
- Hoover Treated Wood Products, Inc., at the
- following address:
- NOTE ** P.O. Box 746
- NOTE ** Thomson, GA 30824.
- NOTE ** Telephone: 800-832-9663.
- NOTE ** FAX: 706-595-1326.
- NOTE **
- NOTE ** "Pyro-Guard" is a UL listed third-generation Type
- "A" (low-hygroscopic) treatment for lumber and
- plywood used in interior structural and non-
- structural applications, with strength ratings for
- use at elevated temperatures that have been
- reviewed by the National Evaluation Service, Inc.
- NOTE **
- NOTE ** SECTION 06072 - FIRE-RETARDANT TREATMENT OF WOOD,
- Copyright 1996, The Architect's Catalog, Inc.
- NOTE ** This specification section is for treatment only.
- Grades and species of plywood and lumber to be
- treated must be specified separately. See Related
- Sections article below.
-
- PART 1 - GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Delete items below not required for project.
-
- A. Fire-retardant treatment for the following:
- 1. Wood framing.
- 2. Decking.
- 3. Sheathing.
- 4. Blocking.
- 5. Miscellaneous rough carpentry.
- 6. Wood siding.
- 7. Wood trim and moldings.
- 8. Wood frames for doors, windows, and glazed lights.
- 9. _________.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete any sections below not relevant to this
- project; add others as required.
-
- A. Section 06075 - Preservative Treatment of Wood.
-
- B. Section 06100 - Rough Carpentry.
-
- C. Section 06110 - Wood Framing.
-
- D. Section 06112 - Wood Framing and Sheathing.
-
- E. Section 06114 - Wood Blocking and Curbing.
-
- F. Section 06130 - Heavy Timber Construction.
-
- G. Section 06150 - Wood Decking.
-
- H. Section 06170 - Prefabricated Structural Wood.
-
- I. Section 06200 - Finish Carpentry.
-
- J. Section 06400 - Architectural Woodwork.
-
- 1.3 REFERENCES
- NOTE ** Delete references from the list below that are not
- actually required by the text of the edited
- section.
-
- A. ASTM E 84 - Standard Test Method for Surface Burning
- Characteristics of Building Materials.
-
- B. MIL-L-1914O - Lumber and Plywood, Fire-Retardant Treated.
-
- C. NFPA 255 - Standard Method of Test of Surface Burning
- Characteristics of Building Materials; National Fire
- Protection Association.
-
- D. UL 723 - Standard Test Method for Surface Burning
- Characteristics of Building Materials; Underwriters
- Laboratories, Inc.
-
- 1.4 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data:
- 1. National Evaluation Report indicating limitation of
- use, high temperature strength testing, and flame
- spread, corrosion, and hygroscopic properties.
- 2. Manufacturer's product specifications, storage
- instructions, and installation instructions.
-
- C. Samples: Supply samples for finishing where finish
- samples are required by other sections of the
- specifications.
-
- D. Certificates: Submit wood treater's specifications
- showing compliance with referenced standards.
-
- 1.5 DELIVERY, STORAGE, AND HANDLING
-
- A. Store products indoors and protect from moisture,
- construction traffic, and damage.
-
- PART 2 - PRODUCTS
-
- 2.1 MANUFACTURER
-
- A. Provide fire-retardant wood treatment by or licensed by
- Hoover Treated Wood Products, Inc., P.O. Box 746,
- Thomson, GA 30824. Telephone 800-832-9663. FAX 706-595-
- 1326.
-
- 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.
-
- 2.2 MATERIALS
-
- A. "Pyro-Guard" third generation fire-retardant treated
- wood, complying with MIL-L-19140.
-
- B. Fire Retardancy:
- 1. Flame spread, when tested in accordance with ASTM E
- 84, NFPA 255, or UL 723: Not more than 25.
- 2. Smoke toxicity: No more than that of untreated wood.
- 3. Each piece shall bear the UL Classification Mark
- certifying flame spread rating.
- 4. When test is extended for 20 additional minutes (30
- minutes total), the flame front shall not extend more
- than 10.5 feet from the center line of the burner and
- there shall be no evidence of significant progressive
- combustion.
- 5. Treatment formulation shall contain no halogens,
- sulfates, chlorides, ammonium phosphate, oils, or
- solvents.
-
- C. Reviewed by the National Evaluation Service, Inc. for
- structural use at elevated temperatures.
-
- D. Production and kiln drying after treatment monitored by
- Timber Products Inspection, Inc.
-
- E. Kiln dry lumber to 19 percent or less moisture content
- after treatment.
-
- F. Kiln dry plywood to 15 percent or less moisture content
- after treatment.
-
- 2.3 FABRICATION
-
- A. Milling: Lumber shall be ripped or run to pattern, as
- required, prior to treatment.
-
- PART 3 - EXECUTION
-
- 3.1 EXAMINATION
-
- A. Discard pieces with defects which might impair quality or
- work.
-
- 3.2 FIELD CUTTING
-
- A. Lumber: Do not rip or mill lumber after fire-retardant
- treatment; end cuts, drilling of holes, and joining cuts
- are permitted.
-
- B. Plywood: Fire-retardant-treated plywood can be cut in
- any direction.
-
- 3.3 ADJUST AND CLEAN
-
- A. Remove scraps and debris from site, and leave in a broom-
- clean condition.
-
- END OF SECTION
-