Section 4154. Fence Materials
C. Inspection and acceptance of fence materials will be according to Materials I.M. 454.10.
Use fabric meeting the requirements of ASTM A 116,
Class 3 coating. Type Z, Class 3.
For Type 47
fence, the fabric design is ASTM Design Number 1047-6-11 grade 60 wire or
1047-6-12 1/2 grade 125 wire.
For Type 39
fence, the fabric design is ASTM Design Number 939-6-11 grade 60 wire or
939-6-12 1/2 grade 125 wire.
When the type
is not designated, furnish one of the above 1047 fabrics. Design numbers 1047-6-11 or 939-6-11
for grade 60 wire or design numbers 1047-6-12 1/2 or 939-6-12 1/2 for grade 125
3. Fabric may be furnished in
lengths greater than 20 rods (100 m).
4 3. Use
galvanized (as determined by visual inspection) steel rod for splicing fence
Use woven wire fence fabric that: ·
requirements (excluding wire spacing and fence height) for 12.5 gage wire
according to ASTM A 116, and ·
spaced horizontally and vertically as shown in the contract documents or
1. 12.5 gauge wire according to ASTM A 116 (excluding wire spacing and fence height).
2. Wires are spaced horizontally and vertically as shown in the contract documents or closer.
fabric meeting the requirements of ASTM A 392, Class 2 coating, or
coated fabric meeting the requirements of ASTM A 491.
1. Zinc coated fabric meeting requirements of ASTM A 392, Class 2 (2.0 ounces per square foot (610 g/m2)) or AASHTO M 181 Type I, Class D.
2. Aluminum coated fabric meeting the requirements of ASTM A 491 or AASHTO M 181, Type II.
3. PVC coated fabric meeting requirements of ASTM F 668, Class 2b or AASHTO M 181, Type IV, Class B Fused.
Knuckle the salvage top and bottom, except as
indicated. Use material 72 inches (1.8 m) high (unless specified otherwise) and
fabricated from No. 9 (3.76 mm diameter) wires. Unless otherwise specified in
contract documents, use:
1. 9 gauge coated wire with a breaking strength of 1290 pounds (5.740 kN).
2. Height of fabric of 72 inches (1.8 m).
3. Selvage knuckled at both the top and bottom.
4. Mesh size 2 +/- 1/8 inches (50.8 +/- 3.18 mm).
wire meeting the requirements of ASTM A 121 for 950 pounds (4.23 kN) force
minimum strand breaking strength and 4 barbs at nominal 5 inch (125 mm)
centers. Ensure the zinc coating is at least 0.80 ounce per square foot (244
wire meeting requirements of ASTM A 116, Class 3 coating, or an aluminum coated
steel wire with a coating of not less than 0.25 ounce per square foot (76 g/m2).
Use tension wire at the bottom of chain link fence that meets the requirements
of ASTM A 641/641 M, hard grade, with a Class 3 zinc coating or an aluminum
coating of no less than 0.25 ounce per square foot (76 g/m2).
Tension wire shall meet
requirements of AASHTO M 181 or one of the following:
1. ASTM A 817, Type II, Class 3.
2. ASTM A 121, Type Z, Class 3 zinc coated or aluminum coated.
3. ASTM A 817, Type I.
4. ASTM F 1664, PVC (Vinyl) Coated, Class 2b.
B. Brace and tie wire shall meet the requirements of ASTM F 626 zinc coated or aluminum coated.
1. Where specified, round metallic-coated tie wires, clips, and hog rings shall be polymer coated to match the color of the chain-link fabric as selected from ASTM F 934
2. The coating process and metallic-coated core wire materials shall be in accordance with ASTM F 668.
Table 4154.05-1: Wire Sizes
Tie wires or clips for fastening field fence to steel posts
No. 7 (4.49 mm)
No. 9 (3.76 mm)
No. 12 (2.68 mm)
Use tie wires for chain link
class 3 zinc coated, No. 9 (3.76 mm), 1 3/4 inch (45 mm) long wire staples,
unless specified otherwise in the contract documents. Obtain Engineer’s
approval for the staples to be used.
A. Unless otherwise specified in the contract documents, use fence staples conforming to ASTM F 1667 - 13, Table 57: F 1667 ST FN - 06 Z.
B. Obtain Engineer’s approval for the staples to be used.
the requirements of Section 4164 with pressure preservative treatment meeting
the requirements of Section 4161.
Are of the
size and length designated in the contract documents.
Table 4154.07-1: Post Sizes and Lengths
Length, feet (meters)
Line posts, 4 inch (100 mm) top
End, corner, gate, pull, angle, and brace posts, 6 inch (150 mm) top
7 (2.1 m)
8 (2.4 m)
Use steel angle
(or other approved bracing systems) weighing (with a mass of) no less than 1.94
pounds per foot (2.9 kg/m). Unless otherwise specified in the contract documents, use
either of the following between wood pull posts:
1. 2 3/8 inch (60.3 mm) SS-40 steel pipe.
2. 5 inch (127 mm) diameter wood posts.
Use angles no
less than 2 inches by 1 1/2 inches by 3/16 inches (50 mm by 40 mm by 5 mm). Use
braces shown in the contract documents. Use diagonal trussing with a
double-wrapped 9 gauge, Class 3 steel brace wire.
A. Use T-section
other approved sections) steel posts,
of the length specified, as line posts with wood posts, as shown in the
contract documents. Do not use them for corner, brace, pull, end, or gate posts.
Use posts that
weigh (have a mass of) no less than 1.3 pounds per foot (1.9 kg/m), exclusive
of anchor plate. Use nominal 1.33 pounds per foot (1.98 kg/m) T-section post meeting
requirements of ASTM A 702 and hot dip galvanizing requirements of ASTM A 123.
post with a steel anchor plate of adequate size, firmly attached. After the
anchor plate is attached, cCompletely
paint the finished post with a prime coat and
an enamel finish coat, with no limitation on color or tip
identification except as provided for 1 ,000
foot (300 m) installations. Ensure the paint is thoroughly dry before posts are
bundled for shipment. Unless specified
otherwise, use steel line posts that are 7 feet (2.1 m) in length.
standard weight (schedule 40) pipe meeting the requirements of ASTM F 1083 of
the lengths designated in the contract documents. Posts, braces, and rails of
alternate cross sectional shape, material, or protective coating may be used if
approved according to Materials I.M. 454.10. Ensure similar parts with
different shapes or protective coatings are not intermingled within the project
pipe length shall be designated in the contract documents and shall conform to AASHTO
M 181 (ASTM) requirements:
1. Grade 1 (ASTM F 1083); minimum average zinc coating weight of 1.8 ounces per square foot (549 g/m2).
2. Grade 2 (ASTM F 1043, Group I-C); external zinc coating minimum of 0.9 ounces per square foot (275 g/m2) and internal zinc coating minimum 0.9 ounces per square foot (275 g/m2).
protective coatings for steel posts, braces, and rails of alternate shapes or
alloys comply with one of the following methods. Other protective coatings,
including polymeric, metallic, or combinations of the two, that provide protection
equivalent to a zinc coating meeting ASTM A 123, may be approved. When specified, PVC thermoplastic
coating shall be fused and adhered to zinc-coated posts with a minimum coating
thickness of 0.010 inch (0.254 mm) conforming to ASTM F 934 & ASTM F 1043
Sections 7 and 8.
1. Zinc coatings meeting the
requirements of ASTM A 123.
2. Hot dipped pure aluminum coating
with a minimum coating of 0.75 ounce per square foot (228 g/m2) of
surface, triple spot test, 0.70 ounce per square foot (213 g/m2) of
surface, single spot test, as measured according to ASTM A 428. Both outer and
inner surfaces of pipe or tubing coated with a chromate chemical treatment and
a thin resin film for protection during storage or handling.
Make a driving
fit over the upper 1/2 inch (13 mm) of the post, or
approved means for holding the cap securely in place.
1. Attach braces to posts using fittings which will hold both the post and brace rigidly.
tension truss rods of 3/8 inch (9.5 mm) diameter,
round steel rods with an appropriate commercial means for tightening.
3. Furnish a locknut or other device to hold the tightening device in place.
4. Use wire ties meeting
requirements of Article 4154.05.
5 4. Furnish
a suitable sleeve or coupling device, recommended by the manufacturer, to
connect sections of top rail and to provide for expansion and contraction.
6 5. Use
stretcher bars no less than 3/8 inch (9.5 mm) diameter, or equivalent cross
section area, with suitable clamps for attaching fabric to corner, end, or gate
1. Ensure gates provide the width of opening shown in the contract documents. Install a vertical stay in gates more than 6 feet (1.8 m) wide. Where the width of opening specified is:
· 16 feet (5 m) or less, provide a single gate frame.
· More than 16 feet (5 m), provide two gate frames using a drop bar locking device allowing operation as a double gate.
2. Ensure each gate is furnished complete with necessary hinges, latch, and other special fittings recommended for the type of gate and gate post being installed.
3. For chain link fence gates, use the pipe size shown in the contract documents or approved by the Engineer. When size is not shown in the contract documents, use:
· 1 1/2 inch (40 mm) nominal diameter pipe for gates 6 feet (1.8 m) wide or more, and
· 1 1/4 inch (30 mm) nominal diameter pipe for gates less than 6 feet (1.8 m) wide.
4. Use gate fabric similar to that used for the
fence. Attach using stretcher bars.
5. Use adjustable rods to cross truss gates 6 feet (1.8 m) wide or more.
6. Ensure materials are galvanized with no less than 0.8 ounce per square foot (244 g/m2) of surface. Gates for field fence may be painted with a prime coat and an enamel finish coat.
Furnish the following, galvanized according to Article 4154.10:
1. Tines molded in one piece of steel with no welds.
2. Structural steel tubes with wall thickness of 0.1875 inches (4.75 mm) and unit weight of 4.32 pounds per foot (6.43 kg/m).
3. Support plates, hinges, and top braces.