SECTION 06196

PLYWOOD WEB JOISTS

PART 1 GENERAL

SECTION INCLUDES

Wood chord and [plywood] [particleboard] web joists for [roof] [and] [floor] framing.

Bridging, bracing, and anchorage.

Framing for openings.

[Preservative treatment of wood.]

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [______-____________]: Placement of bearing plates.

RELATED SECTIONS

Section [_____-_________]: Setting anchors in [concrete.] [masonry.] [________.]

Section [_____-_________]: Prefabricated [steel structural supports.] [________.]

Section 06112 - Framing and Sheathing.

Section 06114 - Wood Blocking and Curbing.

Section 06125 - Wood Decking.

Section 06131 - Heavy Timber Framing.

Section 06135 - Heavy Timber Trusses.

Section 06151 - Wood Chord Metal Joists.

Section 06181 - Glued Laminated Structural Units.

Section 06193 - Plate Connected Wood Trusses.

REFERENCES

ALSC - American Lumber Standards Committee: Softwood Lumber Standards.

ANSI A208.1 - Mat-Formed Wood Particleboard.

APA: American Plywood Association.

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

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.

NFPA: National Forest Products Association.

RIS: Redwood Inspection Service.

SPIB: Southern Pine Inspection Bureau.

WCLIB:	West Coast Lumber Inspection Bureau.

WWPA: Western Wood Products Association.

SYSTEM DESCRIPTION

Design floor live [and dead] load: [____] lbs/sq ft ([____] KPa) with deflection limited to [1/240] [____].

Design roof live [and dead] load: [____] lbs/sq ft ([____] KPa) with deflection limited to [1/240] [____].

Minimum Joist Depth To Accommodate Mechanical Ducts: [____] inch ([____] mm).

SUBMITTALS

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

Shop Drawings: Indicate sizes and spacing of joists, loads and joist cambers, framed openings and [________]. [Submit design calculations.]

Product Data: Provide joist configurations, bearing and anchor details, bridging and bracing, and [________].

QUALITY ASSURANCE

Perform Work in accordance with the following agencies:

Lumber Grading Agency:	Certified by ALSC.

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

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.

Design joists 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 loads, seismic zoning, other governing load criteria, [and fire retardant requirements].

DELIVERY, STORAGE, AND HANDLING

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

Protect site framed structural components from warping or other distortion by stacking in vertical position, braced to resist movement.

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] [________].

Wood Chord Members: [Single] [Double] top and bottom chord, [Stress Group [____],] [[________] species [________] grade [________] size classification,] [19] [____] percent maximum moisture content. [Finger scarfing permitted.]

Plywood Web:	APA [Rated Sheathing] [Structural [I] [II]], Span Rating [____]; Exposure Durability [1] [2]; [sanded.] [touch sanded.] [unsanded.]

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

Particleboard Web: [ANSI A208.1] [APA [Waferboard] [Oriented Strand Board] [Structural Particleboard]; wood [chips] [shavings] [flakes] set with waterproof resin binder; [________] grade; [sanded] [unsanded] faces.

Joist Bridging: [Type, size and spacing recommended by joist manufacturer.] [________.]

ACCESSORIES

Adhesive: [ASTM D2559;] [________]; Type [________], for [wet] [________] condition of service.

Wood [Blocking] [Plating] [Support Members] [Framing for Openings]: [In accordance with Section [06114] [________]] [softwood lumber, [S/P/F] [________] species, [construction] [________] grade, maximum moisture content of [19] [____] percent].

Fasteners: [Electro-galvanized] [Hot dip galvanized] steel, type to suit application.

Bearing Plates:	[Electro-galvanized] [Hot dip galvanized], [plain steel.] [________.]

FABRICATION

Fabricate joists to achieve structural requirements specified.

FACTORY 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 supports and openings are ready to receive joists.

PREPARATION

Coordinate placement of [bearing] [support] items.

ERECTION

Install joists in accordance with manufacturer's instructions.

Set structural members level and plumb, in correct position.

Make provisions for erection loads, and for sufficient temporary bracing to maintain structure plumb, and in true alignment until completion of erection and installation of permanent bracing.

Do not field cut or alter structural members without approval of Architect/Engineer.

Place headers and supports to frame openings required.

Frame openings between joists with lumber in [accordance with Section [06112.] [________.]] [________.]

Coordinate placement of decking with work of this section.

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

Framing Members:	[1/2] [____] inch ([12] [____] mm) maximum, from true position.

SCHEDULES

Main Roof: 14 inch deep joists, 6 inch end bearing plates for masonry supporting wall.

Penthouse Roof: 10 inch deep joists, special chord reinforcement for mechanical duct placement through joist as indicated, 2-1/2 inch end bearing plates for steel supporting frame.

END OF SECTION