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    SECTION 02830

    FENCES AND GATES

   PART 1 GENERAL

   1.01 SECTION INCLUDES

    A. Furnish and install new chain link fencing and gates at the locations indicated. Fence fabric shall be 6 feet high.

    B. Chain link fence shall be topped with 3 strands of barbed wire pointing away from the enclosed area.

   1.02 RELATED SECTIONS

    A. Section 03300 - Concrete

   1.03 REFERENCES

    A. Codes, specifications and standards referred to by number or title shall form a part of this Specification to the extent required by the reference thereto. Latest revisions shall apply, unless otherwise shown or specified.

    B. American Association of State Highway and Transportation Officials (AASHTO) Standards

    AASHTO M232 Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

    C. American Society for Testing and Materials (ASTM) Standards

    ASTM A239 Test Method for Locating the Thinnest Spot in a Zinc (Galvanized) Coating on Iron or Steel Articles by the Preece Test (Copper Sulfate Dip)

    ASTM A307 Specification for Carbon Steel Externally Threaded Standard Fasteners

    ASTM A569 Specification for Steel, Carbon (0.15 Maximum, Percent) Hot-Forged Sheet and Strip, Commercial

    ASTM A570 Specification for Hot-Rolled Carbon Steel Sheet and Strip, Structural Quality

    ASTM A777 Specification for Galvanized Round Steel Tying Wire

    ASTM A817 Specification for Metallic-Coated Steel Wire for Chain Link Fence Fabric

   1.04 SUBMITTALS

    A. Make submittals in accordance with the General Conditions and Section 01340, Shop Drawings, Product Data and Samples.

    B. Submit shop drawings showing details of fence fabric, posts, rails, gates, fittings, and locking devices. Submit certification of test results when requested.

   PART 2 MATERIALS

   2.01 Galvanized Fencing

    A. Fence fabric shall be No. 9 steel wire, hot galvanized after weaving, and woven in a 2-inch chain link pattern with bottom and top selvages twisted and barbed. Wire shall have a minimum breaking strength of 1,200 lbs. Wire fabric shall withstand six one-minute immersions under the Preece copper sulfate method of testing for uniformity and weight of coating.

    B. Framework shall be hot-dipped galvanized with a minimum coating of 2 ounces/sf, or one ounce/sf plus 30 micrograms/square inch chromate conversion coating.

    C. Line posts shall be 2.25 x 1.70-inch formed C-section, ASTM A570 Grade 45 steel, 2.6 lbs/ft; or 2.37-inch outside diameter round post, ASTM A569, cold rolled steel with a minimum 50,000 psi yield strength, 3.1 lbs/ft; or 2.5-inch outside diameter, 3.7 lbs/ft. steel pipe.

    D. End corner, angle, and pull posts shall be 3.50 x 3.50-inch formed C-section, ASTM A570 Grade 45 steel, 4.85 lbs/ft.; or 2.87-inch round post, ASTM A569, 4.64 lbs/ft.; or 3-inch outside diameter, 5.79 lbs/ft. steel pipe.

    E. Top rails shall be 1.65 x 1.25-inch formed C-section; or 1.6-inch round ASTM A569, 1.35 lbs/ft.; or 1-5/8-inch outside diameter steel pipe, 2.27 lbs/ft. Top rails shall pass through openings provided for that purpose in post tops.

    F. Fabric ties shall be hog rings, galvanized steel wire not less than 9-ga with a zinc coating of not less than 1.2 ounces/sf.

    G. Bolts and nuts shall be in conformance with ASTM A307 and shall be galvanized in accordance with AASHTO M232.

    H. Pressed steel extension arms shall be provided at posts, extended at an angle of 45 degrees, to which 3 rows of barbed wire of 4-point pattern in 2 strands of 12-1/2-ga wire shall be fastened.

    I. Install horizontal braces fabricated of 1-5/8-inch, 2.27- lb copper bearing steel pipe at all corners, gate, and end posts.

    J. Gates shall be sized and located as shown. Swing gate posts for double gates shall be 4-inch, 9.1-lb pipe. Gate frames shall be made of 2-inch outside diameter, 2.72-lb. hot-dipped galvanized pipe. Corner fittings shall be heavy malleable iron castings. Fabric shall be the same as for the fence. Gates shall have malleable iron ball and socket hinges, catches, stops, and padlocks with 3 keys each. Posts for single gates shall be the same as end posts. Padlocks to be compatible with Metro key system.

   PART 3 EXECUTION

   3.01 Installation of Chain Link Fence

    A. Install chain link fence in accordance with the directions of the manufacturer and these specifications.

    B. Install fence posts at not more than 10-ft. centers and at least 36-inches into the ground in a Class B concrete base. Allow concrete to cure for at least 7 days before erecting remainder of fence. Fasten fabric to line posts with wire ties spaced not more than 14 inches apart and to top rail spaced not more than 24-inches apart.

    C. Use standard chain link fence stretching equipment to stretch the fabric before tying it to the rails and posts. Repeat the stretching and tying operations at intervals not exceeding 100 feet.

    D. Erect gates to swing in the direction indicated. Secure hardware, adjust, and leave in perfect working order. Adjust hinges and diagonal bracing so gates will hang level.

    E. At small natural or drainage ditches where it is not practical for the fence to conform to the contour of the ground, span the opening below the fence with barbed wire fastened to stakes of required length. Install he finished fence to be plumb, taut, true to line and ground contour, and complete in every detail. When directed, stake down the chain link fence at several points between posts.

    F. Where new fence joins an existing fence, set a corner post and brace post at the junction and brace. If the connection is made at other than the corner of the new fence, the last span of the old fence shall contain a brace.

    G. Painting of chain link fencing will not be required.

    END OF SECTION