Standard Specification for

Chain-Link Fence

AASHTO Designation: M 181 -05

1. SCOPE

1 . l . This specification covers materials used in the construction of fences and gates that comprise (a) chain-link fence fabric and (b) posts, rails, ties, bands, bars, rods and other fittings, and hardware designed to support the fabric in a vertical, taut position.

1.2. The values stated in SI units are to be regarded as the standard.

REFERENCED DOCUMENTS

AASHTO Standards: W M 1 1 1 M M 1 11, Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

W M 120, Zinc

M 232MlM 232, Zinc Coating (Hot-Dip) on Iron and Steel Hardware W T 65MlT 65, Mass [Weight] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy

Coatings W T 68, Tension Testing of Metallic Materials

W T 68M, Tension Testing of Metallic Materials [Metric]

W T 213MlT 213, Mass [Weight] of Coating on Aluminum-Coated Iron or Steel Articles

ASTM Standards: B 26, Aluminum-Alloy Sand Castings

W B 85, Aluminum-Alloy Die Castings W B 108, Aluminum-Alloy Permanent Mold Castings

W B 117, Salt Spray (Fog) Testing

W B 209, Aluminum-Alloy Sheet and Plate W B 21 1, Aluminum-Alloy Bars, Rods and Wire

W B 221, Aluminum-Alloy Extruded Bar, Rod, Shape and Tube

W B 429, Aluminum-Alloy Extruded Structural Pipe and Tube W B 750, Specification for Zinc-5 Percent Aluminum Mischmetal Alloy in Ingot Form for Hot-

Dip Coatings

W D 1535, Specifying Color by the Munsell System

W D 1729, Visual Evaluation of Color Differences of Opaque Materials W D 2247, Coated Metal Specimens at 100 Percent Relative Humidity W E 376, Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic)

Test Methods

W F 467, Nonferrous Nuts for General Use W F 468, Nonferrous Bolts, Hex Cap Screws, and Studs for General Use

TS-4d M 181-1 AASHTO

F 668, Standard Specification for Polyvinyl Chloride (PVC) and Other Organic Polymer- Coated Steel Chain-Link Fence Fabric

F 1043, Strength and Protective Coatings on Metal Industrial Chain Link Fence Framework

F 1083, Pipe, Steel, Hot-Dipped Zinc Coated (Galvanized) Welded for Fence Structures

F 1664, Standard Specification for Poly(Viny1 Chloride) (PVC) and Other Conforming Organic Polymer-Coated Steel Tension Wire Used with Chain-Link Fence

G 152, Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials

G 155, Practice for Operating Xenon Arc Light Apparatus for Exposure of Nonmetallic Materials

ANSI Standards:

H35.2, Dimensional Tolerances for Aluminum Mill Products

CLASSIFICATION

Chain-link fabric, posts, rails, ties, bands, bars, rods, and other fittings and hardware covered by this specification shall be composed of the following types of material, as specified:

Type I-Zinc-coated steel,

Type II-Aluminum-coated steel,

Type III-Aluminum alloy, and

Type IV-Polyvinyl Chloride (PVC) and other organic polymer-coated steel.

Zinc-5 Percent Aluminum-Mischmetal alloy meeting the requirements of ASTM B 750 may be substituted for zinc coating (hot-dipped) at the application rate specified herein for hot-dip zinc coating.

Metallic-coated steel posts, rails, or gate frames are furnished in two grades as follows:

Grade I-steel posts, rails, or gate frames may be round or other shapes and shall have a hot-dip zinc interior and exterior coating as prescribed in this specification.

Grade 2-steel posts, rails, or gate frames shall be round pipe or tubing manufactured by electric resistance welding and shall have an exterior coating of hot-dip zinc plus an organic topcoat and a zinc-rich or hot-dip zinc interior coating, or Grade 2 posts may be aluminum-coated inside and outside.

Type IV fabric is furnished in two classes of coating as follows:

Class A-Fabric with polymer-coated wire made by coating the wire with zinc by either the hot- dip or electrolytic process, or with aluminum by the hot-dip process, prior to the wire being coated with either an extruded polymer coating or an extruded and bonded polymer coating.

Class B-Fabric with bonded polymer-coated wire shall be made with wire coated with zinc by either the hot-dip or electrolytic process, or with aluminum by the hot-dip process, prior to having a polymer coating thermally fused and bonded to a primer that has been thermally cured onto the zinc- or aluminum coated wire.

Type I fabric is furnished in two classes of coating as follows:

M 181-2 AASHTO