7-95 SECTIO N 727 – FENCIN G MATERIALS
727.01 WOVEN WIRE FENCE . Woven wire fence shall meet the following requirements:
a.Woven Wire Fabric for Fencing and Gates . Woven wire fabric shall be Design Number 939 -6-11 or Design Number 939 -6-12 1/2 in accordance with AASHTO M 279 , Grade 60. Woven wire fabric shall have a Type A coating or Type Z Class 3 coating and may have a hinge joint or continuous stay fixed knot joint.
b.Barbed Wire . Barbed wire shall be Design Number 12 -4-5-14R in accordance with AASHTO M 280. Barbed wire shall have a Type A coating or a Type Z coating.
c.Wood Posts and Braces . Round wood posts shall be seasoned red (Norway) pine or southern pine, straight, sound, and cut from live timber. If round posts are used, they shall conform to the diameter and length shown on the Plans. In all cases, they shall be not less than 4-1/2 inches in diameter at the small end after removal of the bark. They shall be shaved to an even surface and be free from bark or skin. If sawn posts are used, they shall be rough -sawn and conform to the requirements of Subsection
728.01 The nominal dimensions shall be at least 4 inches square and of the length shown on the
Plans. The types of wood to be used for bracing shall be similar to those required for the posts. The braces shall conform to the dimensions shown on the Plans. All wood po sts and braces shall be pressure treated in accordance with Subsection 726.01 . Any cut portions shall receive a field application in accordance with AWPA Standard M4 .
d.Steel Posts and Braces . Line posts shall be standard commercial T -type steel posts co nforming to the requirements of AASHTO M 281 . End posts, corner posts, pull posts, bracing, and anchor plates shall conform to the requirements of AASHTO M 281 . Intermediate posts or line posts shall be provided with an anchor plate having a length or widt h of 4 inches to 5 inches with a net area of not less than 20 square inches. All posts, braces, anchors, plates, and other metal fittings shall be zinc coated on all inner and outer surfaces in accordance with the requirements of AASHTO M 111 or AASHTO M 2 32, whichever is applicable. 7-96 (e) Gates . Frames, diagonal tie bars, braces, and hardware for gates shall be zinc -coated on all inner and outer surfaces in accordance with the requirements of ASTM A53, AASHTO M 111 , or AASHTO M 232 , whichever is applicable. Woven wire fabric used for gates shall be of the same material used in fences.
f.Miscellaneous Hardware . Miscellaneous hardware such as, but not limited to, wire, clips, nails, bolts, nuts, washers, hinges, latches, and staples shall be of low to medium carbon steel, galvanized, and shall be of good commercial quality. Staples shall be 0.1483 -inch diameter (9 - gauge) galvanized wire at least 1 -1/2 inches long. Galvanizing shall be in accordance with the requirements of AASHTO M 232 , where applicable . Galvanized wire and clips produced from galvanized wire shall have a Class 1 coating in accordance with AASHTO M 279 .
727.02 CHAIN -LINK FENCE . Chain -link fence shall conform to the requirements of AASHTO M 181
and shall be one of the products listed on the Agency’s Approved Products List .
a.Fabric . Chain -link fence fabric shall be 0.148 3-inch diameter (9 -gauge) wire woven into a 2 -inch mesh.
1.Chain -Link Fence Fabric, Galvanized . Galvanized c hain-link fence fabric shall be Type I, Class D in accordance with AASHTO M 181 .
2.Chain -Link Fence Fabric, PVC Coated . PVC coated c hain-link fence fabric shall be Type IV, Class B in accordance with AASHTO M 181 . PVC coating shall be black unless otherwise noted in the Contra ct.
b.Posts . Posts shall be Grade 1 or Grade 2 round pipe in accordance with AASHTO M 181 and conform to the following requirements:
1.Gate Posts . Gate posts shall conform to the requirements of Table 727.02A . 7-97 TABLE 727.02A – ZINC -COATED STEEL MATERIAL FOR GATE POSTS Nominal Width of Gate 1 Grade Outside Diameter (in.) Weight Per Foot (lbs) 6 feet and less Grade 1 2.875 5.80 Grade 2 2.875 4.64 Over 6 feet to 13 feet Grade 1 4.00 9.12 Grade 2 3.50 5.71 Over 13 feet to 18 feet Grade 1 or Grade 2 6.625 18.99 Over 18 feet Grade 1 or Grade 2 8.625 28.58 1 Nominal width of gate is for a single gate or one leaf of a double gate.
2.End, Corner, and Pull Posts . End, corner, and pull posts shall conform to the requirements of Table 727.02B . TABLE 727.02B – ZINC -COATED STEEL MATERIAL FOR END, CORNER, AND PULL POSTS Chain -Link Fence Fabric Height Grade Outside Diameter (in.) Weight Per Foot (lbs) Less than 6 feet Grade 1 2.375 3.65 Grade 2 2.375 3.12 6 feet and greater Grade 1 2.875 5.80 Grade 2 2.875 4.64
3.Line Posts . Line posts shall conform to the requirements of Table 727.02C . TABLE 727.02C – ZINC -COATED STEEL MATERIAL FOR LINE POSTS Chain -Link Fabric Height Grade Outside Diameter (in.) Weight Per Foot (lbs) Less than 6 feet Grade 1 1.90 2.72 Grade 2 1.90 2.28 6 feet and greater Grade 1 2.875 5.80 Grade 2 2.375 3.12 7-98 (c) Gate Components . Gate components shall be in accordance with AASHTO M 181 .
1.Gate Frame . Gate frames shall be Grade 1 or Grade 2 round pipe in accordance with AASHTO M 181 and conform to the requirements of Table 727.02D . TABLE 727.02D – ZINC -COATED STEEL MATERIAL FOR GATE FRAMES Nominal Width of Gate 1 Grade Outside Diameter (in.) Weight Per Foot (lbs) 6 feet and less Grade 2 1.660 1.84 Over 6 feet to 13 feet Grade 1 1.90 2.72 Grade 2 1.90 2.28 Over 13 feet to 18 feet Round 6.625 18.97 1 Nominal width of gate is for a single gate or one leaf of a double gate.
2.Brace Rod . Brace rods shall be Grade 1 or Grade 2 round pipe in accordance with AASHTO M 181 and conform to the requirements of Table 727.02E . TABLE 727.02E – ZINC -COATED STEEL MATERIAL FOR BRACE RODS Grade Outside Diameter (in.) Weight Per Foot (lbs) Grade 1 1.660 2.27 Grade 2 1.660 1.84
3.Truss Rod . Truss rods shall be 0.375 inch steel round rod s with a turnbuckle.
d.Miscellaneous Hardware and Fittings . Miscellaneous hardware and fittings shall be steel in accordance AASTHO M 181 and meet the following requirements as applicable:
1.Tension Bar . Tension bars shall be flat steel, 0.25 inch × 0.625 inch for fabric heights 6 foot and less or 0.25 inch × 0 .75 inch for fabric heights over 6 foot.
2.Tension Wire . Tension wire shall be 0.177 0 inch diameter (7 gauge), Class 1 in accordance with AASTHO M 181 . 7-99 727.0 3 BARRIE R FENCE . Barrier fence shall be fluorescent yellow or orange, ultraviolet stabilized, high density polyethylene mesh or grid that will not sag, corrode, rot, or conduct electricity.
727.04 PROJECT DEMARCATION FENCE . Project demarcation fence shall be non -adhesive,
ultraviolet stabilized, fluorescent yellow or orange vinyl -coated polyester mesh or polyethylene plastic tape that will not sag or tear over time due to natural weather conditions.
727.05 SNOW BARRIER FENCE . Snow barrier fence shall conform to the requirements of AASHTO M
181 and to the design, dimensions, and details shown on the Plans.
a.Snow Barrier Fabric . Snow barrier fabric shall meet the requirements of Subsection 727.02(a) as modified below .
1.Snow barrier fabric shall be woven into a 1 -inch mesh.
b.Posts . Posts shall meet the requirements of Subsection 727.02(b) .
c.Miscellaneous Hardware . Miscellaneous hardware shall meet the requirements of Subsection 727.02( d). 727.0 6 PLAN K RAIL FENCE . The plank for rail fence shall be seasoned red (Norway) pine or southern pine, planed on four sides, and of the dimensions shown on the Plans. Wood shall be pressure treated in accordance with Subsection 726.01 . Miscellaneous hardware for plank rail fence such as spikes, lag screws, bolts, nuts, and washers shall conform to the dimensions shown on the Plans. Hardware shall be of low - to medium -carbon steel, galvanized, and shall be of good commercial quality. The metal brackets shall be fabricated from 1/4 inch steel plate and shall be galvanized after fabrication. 7-100 SECTION 728 – ROADSIDE SAFETY BARRIER MATERIALS
728.01 Posts .
a.Wood Posts . Posts shall be straight, sound wood meeting one of the following:
1.Red (Norway) Pine . No. 1 Stress Grade red (Norway) pine as determined in accordance with the Northeastern Lumber Manufacturers Association; or
2.Southern Pine . No. 2 Stress Grade southern pine as determined in accordance with the Southern Pine Inspection Bur eau. Wood posts shall be treated in accordance with Subsection 726.01 for sawn guardrail posts after fabrication. Inspection, quality control, handling, storage, field fabrication, and field treatment shall be in accordance with AWPA Standard M2 , AWPA Standard M3 , and AWPA Standard M4 .
b.Steel Posts and End Post Caps . Posts and caps shall be structural steel in acco rdance with AASHTO M 270 , Grade 36. Posts shall be galvanized in accordance with AASHTO M 111 after fabrication.
728.02 Beam and Cable Elements .
a.Cable . Cable shall be wire rope in accordance with AASHTO M 30 , Type I, Class A Coating.
b.W-Beam and Thrie Beam . Beam shall be corrugated sheet steel W -beam in accordance with AASHTO M 180 , Type II.
1.Standard Beam . Standard beam shall be Class A in accordance with AASHTO M 180 .
2.Heavy Duty Beam . Heavy duty beam shall be Class B in accordance with AASHTO M 180 .
c.Box Beam . Beam shall be square steel structural tubing in accordance with Subsection 714.11 . Beams shall be galvanized in accordance with AASHTO M 111 after fabrication.
d.Steel -Backed Timber Beam .
1.Timber . Timber shall have a minimum allowable bending stress of 1,450 psi.
2.Steel Backing and Splice Plates . Steel backing and splice plates shall be in accordance with AASHTO M 270 , Grade 50. Steel backing and splice plates shall be galvanized in accordance with AASHTO M 111 after fabric ation.
e.End Sections . End sections shall be sheet steel in accordance with AASHTO M 180 , Type II.
Source: Vermont Standard Specifications for Construction, 2024 Edition. Pages 1247–1251 of 1,380.