Revised specifications.pdf

Repair Sewage Lagoon – 02831-1 156-012 Secondary South – JGAR200345

DIVISION 2 – SITE WORK

SECTION 02831 – FENCING

PART 1 GENERAL

1.01 Summary

A. SECTION INCLUDES

1. Furnishing and installing of posts, gate with posts, fence wire, and signs.

1.02 REFERENCES

A. Reference Standards include, but are not limited to:

1. Standard Specifications for Road and Bridge Construction, Latest Edition, by North Dakota Department of Transportation.

1.03 SUBMITTALS

A. Submit under the provisions of Section 01000.

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

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

1.04 FIELD MEASUREMEMTS

A. Verify that field measurements are as indicated on shop drawings.

PART 2 PRODUCTS

2.01 POSTS

A. WOOD POSTS

1. Wood posts shall be of Pine, Fir, Spruce, Cedar, Aspen, American Elm, Easter Cottonwood, or Ash. Posts shall be naturally round and shall be cut from live, green growing trees.

2. Line Posts and braces shall be at least 3-1/2 inches in diameter at the end and of the length shown on the Drawings. Corner and brace posts shall be of length and diameter shown on the Drawings.

3. All posts shall have the inner bark shaved off and knots trimmed before treatment.

4. Knots that are sound, and smoothly trimmed, and do not impair the strength of the posts will be permitted. Decay, short kinks, and reverse bends will not be permitted.

5. Defects of any kind which give the posts an unsightly appearance will not be permitted.

6. All posts shall be preserved and treated according to AASHTO M133 for timber preservatives.

Repair Sewage Lagoon – 02831-2 156-012

2.02 BARBED WIRE FENCE

A. Barbed wire shall meet ASTM A 121, Class1. Barbed wire shall be 12.5 gauge wire with 2 point barbs.

2.03 BRACE WIRE

A. Brace wire and loops shall be No. 9 gauge smooth galvanized wire.

2.04 FENCE STAPLES

A. Staples shall be 1-1/2 inches long and made of No. 9 gauge galvanized wire.

2.05 GATES

A. Gates shall be of the length as shown on the Drawings. The gates shall be made of 2” tubular steel and shall be painted. Gate shall include the necessary material and appurtenances needed to properly hang the gate. Gate hinges shall be anchored to posts by threaded bolts which extend through the entire diameter of the gate post and able to be adjusted easily. Gate shall also include a chain and padlock with two keys.

2.06 SIGNS

A. Signs shall be rated for outdoor and heavy-duty use. Signs shall include the necessary material and appurtenances needed to properly mount the sign to the security fence. Sign Type shall be indicated as shown on the Drawings. Signs shall be incidental to the security fence.

1. Material: Aluminum

2. Reflectivity: Government Construction Representative-Grade Reflective

3. Topcoat: Duroshield

4. Approved Manufacturers:

a. Emedco.

b. Or approved equal.

PART 3 EXECUTION

3.01 GENERAL

A. The fence shall be erected in the locations as shown on the Drawings.

B. The bottom of the fence shall follow the contour of the ground except at grade depressions such as stream crossings, drainage ditches, or other locations where it is not practical. At such locations the fence shall span the depression, and the space below the bottom wire shall be closed with additional wire and posts of regular or extra length as acceptable to the Government Construction Representative.

C. Wood Posts shall be placed at the intervals shown on the drawings and shall be placed to the required depth and plumb. Posts shall be driven or set in holes. If

Repair Sewage Lagoon – 02831-3 156-012 soil conditions prevent proper driving of the posts, a pilot hole may be drilled. The pilot hole shall be no larger than the diameter of the post minus one inch.

D. If posts are set in holes, holes shall be large enough to allow proper tamping.

Wood Posts shall be set with the large end down. Backfill shall be placed in uncompacted lifts not exceeding 6 inches and then compacted. Backfill shall be crowned away from the post.

E. Posts damaged during handling and driving shall be replaced at the Contractor’s expense.

F. Posts shall be grounded at every tenth post using a nine gauge wire the full length of the post. The wire shall be stapled to the post before driving and placed so each line wire shall be stapled to it.

3.02 CORNER AND BRACE ASSEMBLIES

A. Wood corner and brace posts shall be installed as directed on the Drawings.

3.03 INSTALLING FENCE WIRE

A. Barbed Wire shall not be stretched around corners but shall be cut and tied securely to each corner or brace post.

B. In erecting the fence any combination of splices, both factory and field, shall not exceed 3 in one spool of wire.

C. If a wire breaks after the fence has been erected, no more than 2 field splices per strand shall be permitted between brace assemblies.

D. Wires shall be placed on the side of the post away from the pond site.

E. Staples shall be driven diagonally to the grain of the wood and shall be driven ¾ of their length into the wood leaving room for the wire to move.

F. Wire shall be fastened to steel posts with wire clamps or fasteners designed for use with the posts.

3.04 GATES

A. Gates shall be installed and located as shown on the Drawings.

3.05 SIGNS

A. Signs shall be installed and located as shown on the Drawings.

B. Signs shall be fastened to the security fence per manufacturer’s recommendation.

END OF SECTION