SECTION 06125

WOOD DECKING

PART 1 GENERAL

SECTION INCLUDES

[Softwood lumber] [Plywood] [Glued laminated] structural wood decking.

[Preservative treatment of wood.]

RELATED SECTIONS

Section [03300 - Cast-in-Place Concrete] [04300 - Unit Masonry System]: Bearing support.

Section 06112 - Framing and Sheathing: Wood plate supports.

Section 06114 - Wood Blocking and Curbing.

Section 06131 - Heavy Timber Framing.

Section 06135 - Heavy Timber Trusses.

Section 06151 - Wood Chord Metal Joists.

Section 06181 - Glued Laminated Structural Units.

Section 06193 - Plated Connected Wood Trusses.

Section 06196 - Plywood Web Joists.

Section 09900 - Painting: Field finishing.

REFERENCES

AITC 112 (American Institute Timber Construction) -Standard for Tongue and Groove Heavy Timber Decking.

ALSC - American Lumber Standards Committee: Softwood Lumber Standards.

ANSI A190.1 - Structural Glue Laminated Timber

APA: American Plywood Association.

AWPA (American Wood Preservers Association) C1 - All Timber Products Preservative Treatment by Pressure Process.

AWPA (American Wood Preservers Association) C20 -Structural Lumber Fire Retardant Treatment by Pressure Process.

ASTM D2559 - Adhesives for Structural Laminated Wood Products for Use Under Exterior (Wet Use) Exposure Conditions.

NFPA: National Forest Products Association.

RIS: Redwood Inspection Service.

SPIB: Southern Pine Inspection Bureau.

WCLIB:	West Coat Lumber Inspection Bureau.

WWPA: Western Wood Products Association.

SYSTEM DESCRIPTION

Design floor live [and dead] load: [________] psf ([_________] KPa) with deflection limited to [1/360] [________].

Design roof live [and dead] load: [________] psf ([________] KPa) with deflection limited to [1/240] [________].

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate deck framing system, loads and cambers, bearing details, framed openings and [________].

Product Data: Provide technical data on wood preservative materials, application instructions.

Samples of Exposed To View Wood Deck: Submit [two] [_______] samples, [____x____] inch ([____x____] mm) in size illustrating wood grain, stain, and finish.

QUALITY ASSURANCE

Perform Work in accordance with the following agencies:

Lumber Grading Agency:	Certified by ALSC.

Plywood Grading Agency: Certified by [APA.] [____.]

In lieu of grade stamping exposed to view lumber and plywood, submit manufacturer's certificate under provisions of Section [01400] [01405] that [products] [_________] meet or exceed [specified requirements] [_________]

Maintain [one copy] [[____] copies] of [each] document on site.

QUALITY ASSURANCE

Perform Work in accordance with ANSI A190.1.

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the Products specified in this section with minimum [three] [_______] years [documented] experience; [and certified by AITC].

Installer: Company specializing in performing the work of this section [with minimum [__________] years [documented] experience] [approved by manufacturer].

Design decking under direct supervision of a Professional Structural Engineer experienced in design of this Work and licensed [at the place where the Project is located] [in the State of [____________]].

REGULATORY REQUIREMENTS

Conform to [applicable] [________] code for [fire retardant] [________] requirements.

Conform to [UL] [________] requirements to achieve rating indicated.

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect, and handle products to site under provisions of Section [01600.] [________.]

Protect glue laminated members in accordance with AITC requirements for [unwrapped] [load wrapped] [bundle wrapped] [individually wrapped] material.

FIELD MEASUREMENTS

Verify that field measurements are as [indicated [on shop drawings].] [instructed by the manufacturer.]

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

MATERIALS

Lumber Grading Rules: [NFPA] [RIS] [SPIB] [WCLIB] [WWPA] [________].

Lumber Decking: [Stress Group [____],] [________] species, [________] grade, [________] size classification,] [19] [____] percent maximum moisture content; [bevel edges] [________], [single] [double] [triple] tongue.

****** [OR] ******

Plywood:	APA [Rated Sheathing] [Structural [I] [II]], Span Rating [____]; Exposure Durability [1] [2]; [A] [B] [____] interior veneer appearance grade; [sanded.] [touch sanded.] [unsanded.]

****** [OR] ******

Glued Laminated Decking:	[_________] species softwood lumber, [ASTM D2559] [_________] type adhesive for "wet" service; [bevel edges] [________], [single] [double] [triple] tongue; design for the following values:

Bending (Fb): [____] psi ([____] KPa).

Tension parallel to grain (Ft): [____] psi ([____] KPa).

Compression parallel to grain (Fc): [____] psi ([____] KPa).

Horizontal Shear (Fv):	[____] psi ([____] KPa).

Modulus of elasticity (E):	[____] psi ([____] MPa).

ACCESSORIES

Fasteners and Anchors:

Fasteners: [Hot-dipped galvanized] [Zinc electroplated] steel for high humidity and treated wood locations, unfinished steel elsewhere.

****** [OR] ******

Drywall Screws: Bugle head, hardened steel, power driven type, [length [three] [____] times thickness of sheathing.] [length to achieve full penetration of sheathing substrate.]

Anchors:	[Toggle bolt type for anchorage to hollow masonry.] [Expansion shield and lag bolt type for anchorage to solid masonry or concrete.] [Bolt or ballistic fastener for anchorages to steel.]

Adhesive: [APA AFG-01,] waterproof, air cure type, cartridge dispensed; [________] manufactured by [____________].

Sealer: [_________].

FABRICATION - GLUED LAMINATED DECKING

Fabricate glue laminated decking in accordance with AITC [Industrial] [Architectural] [Premium] grade.

After end trimming, [[seal with penetrating sealer] [seal with sealer coat] [________] in accordance with AITC requirements.] [do not seal.]

WOOD TREATMENT

Fire retardant: [AWPA Treatment C20, [Exterior] [Interior] Type,] chemically treated and pressure impregnated; capable of providing a maximum flame spread/smoke development rating of [____] / [____]; [________] manufactured by [____________].

Wood Preservative (Pressure Treatment): [AWPA Treatment C1] using [water borne] [_____________] preservative with [0.25] [_____] percent retainage.

Wood Preservative (Surface Application):	[Clear] [colored], [_____________] type, manufactured by [_____________].

PART 3 EXECUTION

EXAMINATION

Verify that support framing is ready to receive decking.

PREPARATION

Coordinate placement of [bearing] [support] items.

INSTALLATION - PLYWOOD DECKING

Install decking perpendicular to framing members, [with ends staggered over firm bearing]. [On sloped surfaces, lay decking with tongue upward.]

Allow expansion space at edges and ends.

Attach decking with [adhesive and] [drywall screws] [_________].

Use sheathing clips at unsupported edges of plywood sheets between supporting framing members.

****** [OR] ******

INSTALLATION - [LUMBER] [GLUED LAMINATED] DECKING

Install decking perpendicular to framing members, [with ends staggered] [over firm bearing]. [On sloped surfaces, lay decking with tongue upward.]

Fit butt end deck joints occurring between support members with metal splines to maintain tight, aligned joints.

Secure with fasteners. [Side spike planks together, through pre-drilled holes].

Maintain decking joint space of [1/16] [____] inch ([1.5] [____] mm) maximum.

SITE APPLIED WOOD TREATMENT

Apply preservative treatment in accordance with	manufacturer's instructions.

Brush apply [one] [two] coats of preservative treatment on wood in contact with [cementitious materials] [roofing and related metal flashings] [and] [_________]. [Treat site-sawn cuts.]

Allow preservative to dry prior to erecting members.

TOLERANCES

Surface Flatness of Decking Without Load: [1/4] [____] inch in 10 feet ([2] [____] mm/m) maximum, and [1/2] [____] inch ([12] [____] mm) maximum in [30] [____] feet.

SCHEDULES

Main Roof Deck: Lumber, Stress Grade D, 2-3/4 inches thick x 7-1/2 inches wide, single tongue edge, fire retardant treated.

Penthouse Roof Deck:	Plywood, APA Structural I, Douglas Fir species, 3/4 inches thick, square edge, pressure impregnate moisture resistance treated.

END OF SECTION