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- SECTION 06151
-
- CEDAR DECKING
- NOTE ** Western Red Cedar Lumber Association, cedar decking
- NOTE **
- NOTE ** This section is based on Publication 93-494 Revised
- July 1997, Specifying Cedar Decking, published by
- the Western Red Cedar Lumber Association (WRCLA),
- whose head office is at the following address:
- NOTE ** 1100/555 Burrard Street
- NOTE ** Vancouver, British Columbia V7X 1S7
- NOTE ** Tel: (604) 684-0266
- NOTE ** Fax: (604) 682-8641
- NOTE ** e-mail: WRCLA@cofiho.cofi.org
- NOTE ** Website: www.wrcla.org
-
- NOTE ** Western Red Cedar offers the advantages of natural
- beauty, design flexibility, and long term
- durability; it is one of the few woods with its own
- preservative oils to protect against decay and
- insect attack. Its freedom from pitch and resin
- makes it an excellent base for protective coatings.
- Its exceptional dimensional stability helps ensure
- that decks stay flat and straight and resist
- checking.
- NOTE **
- NOTE ** See other WRCLA sections for timber construction
- and landscape structures, wood trim, and cedar
- siding.
- NOTE **
- NOTE ** SECTION 06151 - CEDAR DECKING, Copyright 1998, The
- Architect's Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Select paragraphs below applicable to project; add
- others as required.
-
- A. Cedar Decking.
-
- B. Cedar Steps.
-
- C. Cedar Seating.
-
- D. Cedar Screens.
-
- E. Cedar Trellises.
-
- F. _____________________________________.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete sections below not relevant to this project;
- add others as required.
-
- A. Section 06100 - Rough Carpentry.
-
- B. Section 06139 - Timber Construction.
-
- C. Section 06221 - Wood Trim.
-
- D. 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. Western Red Cedar Lumber Association "Product Standards."
-
- B. __________________________________________.
-
- 1.4 DELIVERY, STORAGE, AND HANDLING
-
- A. Inspect the materials upon delivery to assure that
- specified products have been received.
-
- B. Store materials in safe area, away from construction
- traffic; store under cover and off ground, protected from
- moisture.
-
- C. Keep materials clearly separated and identified with
- grade marks legible. Keep damaged material identified as
- damaged and stored separately.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Acceptable Manufacturer: Member of the Western Red Cedar
- Lumber Association (WRCLA). ASD.
-
- 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 western red cedar from a single supplier.
-
- 2.2 MATERIALS
-
- A. Western Red Cedar: WRCLA Western Red Cedar.
- NOTE ** Select grade(s) and moisture content of Western Red
- Cedar from paragraphs below as required for
- project. Delete references not required for
- project.
- NOTE **
- NOTE ** Clear grade decking is specified when appearance of
- the highest quality is required; available seasoned
- or unseasoned. Architect Clear(tm) grade decking
- provides the ultimate in durability and appearance
- when only the best will suffice. This exclusive
- product is usually manufactured to individual
- order. It has a fine grained heartwood appearance
- with all aspects of its manufacturing and quality
- control performed to the highest standards of the
- lumber industry.
- 1. Grade: Architect Clear(tm).
- NOTE ** Custom Clear(tm) grade decking combines stability,
- durability, and a finely machined surface showing
- limited characteristics. It can be used directly
- on the job and is used for custom residences and
- other applications where fine woodwork is required.
- 2. Grade: Custom Clear(tm).
- NOTE ** Architect Knotty(tm) grade decking provides a
- rustic appearance, with limited size of tight knots
- and other characteristics; available seasoned or
- unseasoned. The smooth, skip-free dressing over
- the entire face makes it a top choice where the
- beauty and charm of a knotty deck are desired.
- 3. Grade: Architect Knotty(tm)
- NOTE ** Custom Knotty(tm) grade decking is widely used by
- homeowners and builders, providing a durable, hole-
- free knotty appearance and limited size and quality
- of characteristics; available unseasoned only.
- 4. Grade: Custom Knotty(tm)
- NOTE ** Select moisture content from the subparagraphs
- below. Note, however, that "seasoned" is not
- available for Custom Knotty(tm).
- 5. Moisture Content: Green (unseasoned).
- 6. Moisture Content: Seasoned.
-
- B. Fasteners:
- NOTE ** Hot-dipped galvanized, aluminum, and stainless
- steel nails can be used to fasten Western Red Cedar
- decking. Stainless steel nails are the best
- choice, although hot-dipped galvanized is the most
- widely used and economical.
- NOTE **
- NOTE ** Hot-dipped galvanized or stainless steel screws can
- also be used, however stainless steel screws are
- recommended. For most applications, No. 304 (18-8)
- grade provides adequate corrosion resistance; for
- decks exposed to salt air, use No. 316 grade.
- Other types of fasteners, such as electro-plated,
- are not recommended as they can rust, disintegrate,
- and react adversely with the natural preservative
- oils present in cedar, resulting in stains and
- streaks. Copper nails also react with cedar and
- should not be used.
- NOTE **
- NOTE ** Select fastener type from subparagraphs below or
- add other type fasteners. Delete those not
- required for project.
- 1. Nails: Hot-dipped galvanized.
- 2. Nails: Aluminum.
- 3. Nails: No. 304 stainless steel.
- 4. Nails: No. 316 stainless steel.
- 5. Screws: No. 304 stainless steel.
- 6. Screws: No. 316 stainless steel.
- 7. _______________________________.
- NOTE ** Blind fastening systems create a fastener-free deck
- surface. They use metal clips and/or joist top
- brackets that fasten the sides or bottom of the
- deck boards to the joists so that no fasteners are
- visible. Consult local fastener company for
- assistance and include the following paragraph if
- blind fastening is required.
-
- C. Blind Fastening System: _________________________.
-
-
- PART 3 EXECUTION
-
- 3.1 PREPARATION
-
- A. Coordinate work with related trades; scribe and cope
- decking for accurate fit. Allow installation of related
- work to avoid cutting and patching.
-
- B. Select decking boards of longest possible lengths.
- Discard boards that are warped, twisted, bowed, crooked,
- or otherwise defective.
-
- 3.2 INSTALLATION
-
- A. Install decking square, plumb, and level, closely fitted
- and securely fastened.
- NOTE ** Include the following three paragraphs if nailed
- decks are allowed. Delete these paragraphs if
- other fastening methods are required.
-
- B. Use thin shanked nails with blunt points to prevent
- splitting.
-
- C. Use 3 inch (10d) nails to fasten decking with nominal
- thickness of 2 inches. Use 2-1/2 inch (8d) nails to
- fasten decking with nominal thickness of 1-1/4 inches
- (31.7 mm). Length may be reduced by 1/4 inch (6.3 mm) if
- ring or spiral shank nails are used.
-
- D. Provide one nail per joist for deck boards 2 inches (50
- mm) wide, two nails per joist for deck boards 4 inches
- (100 mm) and wider.
- NOTE ** Include the following paragraph if screws are
- required for fastening decks.
-
- E. Fasten deck with screws long enough to penetrate 1 inch
- (25 mm) into support members. Provide 1-1/2 inches (38
- mm) penetration for structural components.
- NOTE ** Include the following paragraph if blind fastening
- system is required for fastening decks.
-
- F. Secure decking with blind fastening system following
- manufacturer's instructions.
-
- 3.3 FIELD QUALITY CONTROL
-
- A. Decking may be rejected, whether or not installed, for
- excessive warp, twist, bow, or crook, as well as for
- improper cutting or fitting.
-
- 3.4 ADJUSTING AND CLEANING
-
- A. As work proceeds, maintain premises free of unnecessary
- accumulation of tools, equipment, surplus materials, and
- debris related to this work.
-
-
- END OF SECTION
-