SCOPE
724.01.01 Materials Covered. This specification covers the quality of barbed wire, woven wire, and chain- link
fabric fencing, fence posts, gates, and miscellaneous fence hardware. REQUIREMENTS
724.02.01 Samples and Certificates of Inspection. Furnish 2 certificates covering each order of material by
the manufacturer, certifying that the various metal components comply with the requirements herein. Deliver the certificates at the time of, or before, delivery of the or der. PHYSICAL PROPERTIES AND TESTS
724.03.01 Wood Posts. Intermediate braced posts and braces shall be of the same type as line posts.
End, gate, and corner post assemblies, including bracing timber, shall be sawed lumber and shall conform to the grading requirements of Section 718. They shall be of Douglas Fir, Western Larch, or Southern Pine. Line posts and intermediate braced posts and bracing shall be round and shall be of Douglas Fir, Southern Pine, Lodgepole Pine, or Western Larch manufactured from sound live trees well seasoned and free from large knots, shakes, or splits or other defects which will impair their strength or durability. Peel the posts and braces to remove all outer bark and all inner cambium bark, except an occasional strip of inner bark may remain if not over 13 mm (1/2 in.) wide or 75 mm (3 in.) long. Trim knots flush with the side, remove spurs and splinters, and cut ends square. The small end of round line posts and braces shall be between 90 and 115 mm (3.5 and 4.5 in.) in cross sectional dimension; the small end of intermediate braced posts shall be between 140 and 165 mm (5.5 and 6.5 in.) in cross sectional dimension. The allowable taper from end to end of round posts and braces shall not exceed 38 mm (1.5 in.). Pressure tre at posts and braces according to Section 718. Treat all posts and braces with the same type of preservative. When pressure treated materials have been damaged or when it has been absolutely necessary to cut or bore into them, after delivery to the job sit e, carefully field treat all exposed untreated wood with preservative applied either by thorough swabbing or by an approved bolt -hole treater. Corner, end, pull, line, brace, and gate posts shall be of the type, size weight, and length shown on the plans.
724.03.02 Metal Posts. Steel pipe posts shall be Class 1 or Class 2 and conform to the following:
1.Class 1 pipe posts shall be galvanized standard weight steel pipe ( Schedule 40) conforming to ASTM F1083.
2.Class 2 pipe posts shall be Grade 1 or 2 c onforming to AASHTO M181, except that Grade 2 shall be only zinc plus organic coated. Fabricate C -section and Type II posts and braces from roll formed steel conforming to ASTM A 1011, Grade 45 and zinc coat or zinc plus organic coat according to AASHTO M181. Pre-galvanized C -sections and Type II posts may be used provided the edges are coated in conformance with ASTM A780. Manufacture T -section posts of steel conforming to ASTM A283, A663 , or A675, or manufacture to comply with AASHTO M281, T -section type. Manufacture T -section posts to tolerances and workmanship as provided in AASHTO M281. 724 FENCE MATERIALS Provide T -section posts with tapered anchor plates attached securely thereto. The anchor plates shall weigh not less than 0.30 kg (0.67 lb) and have a minimum area of 11,600 mm2 (18 in.2). The anchor plate may be omitted provided the post is set in concrete. Furnish each post with galvanized wire clamps as follows: one clamp for each strand of barbed wi re or smooth wire; and clamps for the top, bottom and at not more than 350 mm (14 in.) intervals between top and bottom for mesh fencing. Galvanize T -section posts or paint with anticorrosive paint. Drill, notch, or stud the post to facilitate fastening the fencing.
724.03.03 Barbed Wire. Barbed wire shall conform to ASTM A121, Coating Type Z, Coating Class 1, Design
Number 12- 4-5-14R. Smooth wire shall meet the requirements for barbed wire, except the wire shall not have barbs.
724.03.04 Woven Wire. Woven Wire shall conform to ASTM A116, 2.51 mm (No. 12 1/2) Farm, except that the
minimum weight of coating shall be 61 g/m2 (0.2 oz/ft2) of uncoated wire surface.
724.03.05 Chain Link Fabric. Chain -link fabric and required fittings, hardware, and pedestrian rail shall
conform to AASHTO M181, Type I or Type II, except that for Type I galvanize the fabric with the minimum weight of coating of 366 g/m2 (1.2 oz/ft2) of uncoated wire surface. Use 3.05 mm (11 gage) wire in the manufacture of the fabric f or chain link fence 1,800 mm (72 in.) or less in height, and provide mesh size of 50 mm (2 in.). Use 3.76 mm (9 gage) wire in the manufacture of the fabric, for pedestrian rail and with a mesh size of 25 mm (1 in.). The tension wire shall conform to AASHT O M181.
724.03.06 Staples, Brace Wire, and Nails. Use 4.27 mm (8 gage) brace wire, medium temper, 379
to 517 MPa (55 to 75 ksi) tensile strength and galvanize according to the requirements specified for barbed wire. Make staples from 3.76 mm (No. 9) galv anized wire of the U -shaped type, 44 mm (1 3/4 in.) long.
724.03.07 Metal Gates. (a) Drive Gates for Standard Fencing. Construct the gate frames of not less than
NPS 1 galvanized standard weight pipe conforming to the dimensions, nominal weights, and galv anizing specified in ASTM A53 (hydrostatic test will not be required). Place galvanized tubular steel braces vertically in each gate, and secure corner and brace joints so that the gate will retain a true rectangular shape. Use rectangular mesh or 50 mm ( 2 in.) diamond mesh and galvanize according to the requirements herein specified for woven wire fabric.
b.Drive Gate for Chain- Link Fencing. Construct the gate frame of not less than NPS 1 1/2 galvanized standard weight pipe conforming to the dimensions , nominal weights, and galvanizing specified under ASTM A53 (hydrostatic test will not be required). Cross -trim the gate frames with galvanized 9.5 mm (3/8 in.) adjustable truss rods. Fasten the corners of the gate frames together and reinforce with mallea ble iron fittings designed for the purpose of welding. Attach chain- link fence fabric as specified for the fence to the gate frame by the use of stretcher bars and tie wires as specified for fence construction. Space suitable tension connectors at approxi mately 300 mm (1 ft) intervals.
c.Walk Gates. Construct walk gates 1,050 mm (42 in.) wide and of the height corresponding to the adjacent fence. Furnish the gate complete with approved hinges, latches, and auxiliary braces as required. Construct the gate frame of not less than NPS 3/4 galvanized standard weight pipe conforming to the dimension, nominal weights, and galvanizing specified under ASTM A53 (hydrostatic test will not be required). Fill the gate frame with chain link fabric meeting the requirements specified herein.
724.03.08 Tortoise Fence. (a) Steel Hardware Cloth. The steel hardware cloth attached along the bottom of
chain link fence shall be a commercial quality welded galvanized steel wire fabric with 25 mm x 50 mm (1 in. x 2 in.) mesh si ze and 1.5 mm (16 gage) minimum diameter wire. SECTION 725 ELASTOMERIC BEARING PADS SCOPE
725.01.01 Material Covered. This specification covers the materials, manufacture, and testing of plain
elastomeric bearings and steel laminated elastomeric bearings. REQUIREMENTS
725.02.01 Certificate of Inspection. Elastomeric bearing pad materials and completed bearings shall be
tested by the manufacturer or an approved independent testing laboratory, who shall certify that the constituent materials and completed bearings meet these specifications and requirements. The certification shall include a certified copy of the test results on samples of the elastomer and laminated materials to be used in the pads. Furnish material and bearing testing certifications prior to installing the bearings. PHYSICAL PRO PERTIES AND TESTS
725.03.01 General. Elastomeric bearing pads shall conform to AASHTO M251 except modified as follows or as
otherwise indicated on the plans:
1.Elastomer shall be 100% virgin crystallization resistant polychloroprene (neoprene).
2.Elastomer shall be Grade 3 with a durometer hardness of 55 ± 5.
3.Steel laminates shall conform to ASTM A1011M Grade 250 (A1011 Grade 36).
4.The alternate test and acceptance criteria referenced in Section 3.5 of AASHTO M251 are not permitted.
5.The maximum design dead load plus live service compressive load is 6900 kPa (1000 psi) unless shown otherwise on the plans.
6.The compressive strain at the maximum design dead load plus live service compressive load shall not exceed 0.10.
7.The optional AA SHTO M251 test procedures shall apply if the plans indicate the bearing was designed based on AASHTO Method B.
Source: Nevada Standard Specifications for Road and Bridge Construction, 2014 Edition. Pages 577–578 of 610.