SECTION 02831

CHAIN LINK FENCES AND GATES

PART 1 GENERAL

SECTION INCLUDES

Fence framework, fabric, and accessories.

Excavation for post bases; [concrete foundation for posts] [and center drop for gates].

Manual gates and related hardware.

RELATED SECTIONS

[Section [______-____________]: Concrete anchorage for posts].

Section 02781 - Site Grounding Systems.

Section [______-____________]:	Gate locking device.

UNIT PRICE - MEASUREMENT AND PAYMENT

Fencing:

Basis of Measurement: By the linear [foot] [________] ([meter] [________]), to the fence height specified, based on the specified post spacing.

Basis of Payment: Includes posts, rails, tension wire, fabric, accessories, attachments.

Post Footings:

Basis of Measurement: By the unit footing, to the depth specified.

Basis of Payment: Includes excavation, concrete placed, finishing.

Gates:

Basis of Measurement: By the square [foot] [________] ([meter] [________]).

Basis of Payment: Includes frame posts, fabric, accessories, hardware.

REFERENCES

ANSI/ASTM A123 - Zinc (Hot Dip Galvanized) Coatings on Iron and Steel Products.

ANSI/ASTM F567 - Installation of Chain-Link Fence.

ASTM A116 - Zinc-Coated (Galvanized) Steel Woven Wire Fence Fabric.

ASTM A120 - Pipe, Steel, Black and Hot-Dipped Zinc Coated (Galvanized) Welded and Seamless, for Ordinary Uses.

ASTM A121 - Zinc-Coated (Galvanized) Steel Barbed Wire.

ASTM A153 - Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

ASTM A392 - Zinc-Coated Steel Chain-Link Fence Fabric.

ASTM A428 - Weight of Coating on Aluminum-Coated Iron or Steel Articles.

ASTM A491 - Aluminum-Coated Steel Chain Link Fence Fabric.

ASTM A569 - Steel, Carbon (0.15 Maximum Percent), Hot-Rolled Sheet and Strip Commercial Quality.

ASTM A585 - Aluminum Coated Steel Barbed Wire.

ASTM C94 - Ready-mixed Concrete.

ASTM F573 - Residential Zinc-Coated Steel Chain Link Fence Fabric.

ASTM F668 - Poly (Vinyl Chloride) (PVC) Coated Steel Chain Link Fence Fabric.

Chain Link Fence Manufacturers Institute (CLFMI) - Product Manual.

FS RR-F-191 - Fencing, Wire and Post Metal (and Gates, Chain Link Fence Fabric, and Accessories).

SYSTEM DESCRIPTION

Fence Height: [[____] feet ([____] m) nominal] [as indicated on Drawings].

Line Post Spacing: At intervals not exceeding [10] [____] feet ([3] [____] m).

SUBMITTALS

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

Shop Drawings: Indicate plan layout, spacing of components, post foundation dimensions, hardware anchorage, and schedule of components.

Product Data: Provide data on fabric, posts, accessories, fittings and hardware.

Samples:	Submit [two] [_______] samples of fence fabric, [____x____] inch ([____x____] mm) in size illustrating construction and [colored] finish.

Manufacturer's Installation Instructions: Indicate installation requirements [, post foundation anchor bolt templates] and [________________].

PROJECT RECORD DOCUMENTS

Submit under provisions of Section [01700.] [________.]

Accurately record actual locations of property perimeter posts relative to property lines [and easements].

QUALITY ASSURANCE

Perform Work in accordance with [CLFMI - Product Manual] [manufacturer's instructions].

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

Perform Work in accordance with [ANSI/ASTM F567] [FS RR-F-191].

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.

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 AND COMPONENTS

Materials and Components: Conform to CLFMI Product Manual.

Fabric Size:	CLFMI [Heavy Industrial] [Standard Industrial, Heavy Residential] [Light Industrial, Standard Residential] [Light Residential] [Tennis Court] service.

Intermediate Posts: Type [I round] [II round] [C rolled shape].

Terminal, Corner, Rail, Brace, and Gate Posts: Type [I] [II] round.

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

MATERIALS

Framing (Steel):	ASTM A120; Schedule 40 steel pipe, [standard] [________] weight, [one piece without joints] [welded joints permitted].

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

Framing (Steel):	ASTM A569; hot rolled steel strip, cold formed to pipe configuration, longitudinally welded construction, minimum yield strength of 50 ksi (345 MPa).

Fabric Wire (Steel):	[ASTM A392 zinc coated wire fabric] [ASTM A491 aluminum coated wire fabric] [ASTM F668 PVC coated] [ASTM A116 galvanized wire] [ASTM F573 residential quality fabric].

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

Fabric Wire (Steel):	FS RR-F-191 Type [I - zinc coated steel] [II - aluminum coated steel] [III - aluminum alloy] [IV - vinyl coated steel].

Barbed Wire:	[ASTM A121 galvanized steel] [ASTM A585 aluminum coated steel] [PVC coated steel strands with galvanized steel barbs]; [12] [____] gage ([2.5] [____] mm) thick wire, [3] [2] strands, 4 points at [3] [5] [____] inch ([75] [125] [____] mm) o.c.

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

Barbed Tape:	Stainless steel, [0.025] [____] inch ([____] [0.6] mm) thick x [1] [____] inch ([25] [____] mm) wide, coil diameter of [24] [____] inch ([600] [____] mm), die stamped to produce 4 barbed points at [4] [____] inch ([100] [____] mm) o.c.

Concrete: Type specified in Section [03300] [________].

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

Concrete: [ASTM C94;] [Normal] [Sulfate Resisting] [________] Portland Cement, [2,500] [____] psi ([17] [____] MPa) strength at 28 days, [3] [____] inch ([75] [____] mm) slump; [____] inch ([____] mm) nominal sized coarse aggregate.

COMPONENTS

Line Posts: [1.9] [2.38] [____] inch ([48] [60] [____] mm) diameter.

Corner and Terminal Posts: [2.38] [2.88] [3.5] [4.0] [____] inch ([60] [73] [89] [100] [____] mm).

Gate Posts: [3.5] [4.5] [6.63] [____] inch ([89] [114] [168] [____] mm) diameter.

Top and Brace Rail: [1.66] [____] inch ([42] [____] mm) diameter, plain end, sleeve coupled.

Gate Frame: [1.66] [____] inch ([42] [____] mm) diameter for [welded] [fittings and truss rod] fabrication.

Fabric: [2] [1.75] [1] [____] inch ([51] [44] [25] [____] mm) diamond mesh interwoven wire, [6] [9] [11] [____] gage ([5] [4] [3] [____] mm) thick, top selvage twisted tight, bottom selvage knuckle end closed.

Tension Wire: [6] [____] gage ([5] [____] mm) thick steel, single strand.

Tension Band: [____] inch ([____] mm) thick steel.

Tension Strap:	[____] inch ([____] mm) thick steel.

Tie Wire: Aluminum alloy steel wire.

ACCESSORIES

Caps: [Cast steel galvanized] [Malleable iron galvanized] [Aluminum alloy] [Molded rigid vinyl]; sized to post diameter, set screw retainer.

Fittings: Sleeves, bands, clips, rail ends, tension bars, fasteners and fittings; [steel] [________].

Extension Arms: [Cast steel galvanized] [Molded plastic] [________], to accommodate [3] [6] [____] strands of barbed wire, [single] [double] arm, [vertical] [sloped to 45 degrees].

Gate Hardware: [Fork latch with gravity drop] [Center gate stop and drop rod] [Mechanical keepers]; [two] [____] [180] [____] degree gate hinges per leaf [and hardware for padlock].

Privacy Slats: [Vinyl] [Vinyl coated fabric] [________] strips, sized to fit fabric weave, [________] color [as selected].

FINISHES

Components and Fabric: Galvanized to ANSI/ASTM A123; [1.8] [2.0] [____] oz/sq ft ([550] [600] [____] g/sq m) coating.

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

Components and Fabric: Aluminum coating to ASTM A428 [0.40] [____] oz/sq ft ([120] [____] g/sq m).

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

Components and Fabric: Vinyl coating, [medium green] [dark green] [black] [________] color [as selected] [over coating of [1.8] [2.0] [____] oz/sq ft ([550] [600] [____] g/sq m) galvanizing].

Vinyl Components: [________] color [as selected].

Hardware: Galvanized to ASTM A153, [1.8] [2.0] [____] oz/sq ft ([550] [600] [____] g/sq m) coating.

Accessories: Same finish as [framing] [fabric].

PART 3 EXECUTION

INSTALLATION

Install framework, fabric, accessories [and gates] in accordance with [ANSI/ASTM F567] [manufacturer's instructions].

Set [intermediate] [terminal] [gate] [and] [________] posts plumb, [in concrete footings with top of footing [2 inches (50 mm) above] [6 inches ([150] mm) below] finish grade]]. Slope top of concrete for water runoff.

Line Post Footing Depth Below Finish Grade: [ANSI/ASTM F567] [____] feet ([____] m)].

Corner, Gate and Terminal Post Footing Depth Below Finish Grade: [ANSI/ASTM F567] [____] feet ([____] m)].

Brace each gate and corner post to adjacent line post with horizontal center brace rail [and diagonal truss rods]. Install brace rail, one bay from end and gate posts.

Provide top rail through line post tops and splice with [6] [____] inch ([150] [____] mm) long rail sleeves.

Install [center] [and] [bottom] brace rail on corner gate leaves.

Stretch fabric between terminal posts or at intervals of 100 feet (30 m) maximum, whichever is less.

Position bottom of fabric [2] [____] inches ([50] [____] mm) above finished grade.

Fasten fabric to top rail, line posts, braces, and bottom tension wire with tie wire at maximum 15 inches (380 mm) on centers.

Attach fabric to end, corner, and gate posts with tension bars and tension bar clips.

Install bottom tension [wire] [strap] stretched taut between terminal posts.

Install support arms sloped [inward] [outward] and attach barbed wire; tension and secure.

[Do not swing gate from building wall; provide gate posts.]

Install gate with fabric [and barbed wire overhang] to match fence. Install three hinges per leaf, latch, catches, [drop bolt] [foot bolts and sockets] [torsion spring retainer] [retainer and locking clamp].

[Provide concrete center drop to footing depth and drop rod retainers at center of double gate openings].

ERECTION TOLERANCES

Maximum Variation From Plumb: [1/4] [____] inch ([6] [____] mm).

Maximum Offset From True Position: [1] [____] inch ([25] [____] mm).

Components shall not infringe adjacent property lines.

SCHEDULES

Property Perimeter: 6 feet high, dark green fabric, privacy slats.

Fencing at Transformer: 8 feet high, aluminized coated fabric, single strand barbed wire top, on 45 degree sloped arms, pointing out.

END OF SECTION