ITEM 607 FENCE
607.01
Description
607.02
Materials
607.03
Clearing, Grading and Seeding
607.04 Post
Assemblies
607.05
Horizontal Deflection
607.06 Line
Posts
607.07 Fabric
607.08 Barbed
Wire
607.09 Method
of Measurement
607.10 Basis of
Payment
607.01 Description. This work consists of
furnishing and erecting fence and gates of the types designated.
Construct fence in a manner that provides a rigid, taut fence closely
conforming to the surface of the ground.
Fence
is designated by the following types:
A. Type 47 [47-inch (1195 mm)] woven wire fence fabric, steel line posts, and one
strand of barbed wire.
B. Type 47RA [47-inch (1195 mm)] woven
wire fence fabric, wood line posts, and no barbed wire.
C. Type CLT
[60-inch (1525 mm)] chain-link fence fabric with tension wire.
607.02 Materials. Furnish materials conforming to:
Concrete, QC Misc or QC 1 or QC 2............. 499
and 511
Reinforcing
steel...................................................... 509.02
Barbed
wire............................................................. 710.01
Woven steel wire fence
........................................... 710.02
Chain-link
fence....................................................... 710.03
Fence posts, braces, and
dimension lumber............. 710.11
Steel line posts and ties,
Type 47 fence.................... 710.11
Expansion shield anchors, self drilling.................... 712.01
Seeding and
Mulching.................................................. 659
607.03 Clearing, Grading and Seeding. Perform
clearing and grading as necessary to construct the fence to the required
alignment, and provide a reasonably smooth ground profile at the fence line.
Perform fenceline seeding and mulching according to
Item 659 Seeding and Mulching on all areas
disturbed by the clearing and grading for the fence within 8 months of the
activity. The Department will deduct the area paid for under Item 607 Fenceline Seedng and Mulching from Item 659 Seeding
and Mulching quantities as described in the plan, if
applicable.
607.04 Post Assemblies. Securely brace end,
corner, gate, and pull or intermediate anchor posts in position during the curing
period of the concrete encasement. The Engineer will not require forms
for post encasement.
For
Type 47 and Type CLT fence, ensure that the maximum
spacing between intermediate anchor post assemblies, or between end post
assemblies and intermediate anchor post assemblies, are 660 feet (200 m).
607.05 Horizontal Deflection. At points
of horizontal deflection, construct the fence as follows:
A. Type 47 Fence. If the fence changes alignment by more than 1
degree but not more than 4 degrees, install either steel line posts encased in
concrete or wood posts without encasement at all horizontal deflection
points. If the change in alignment is more than 4 degrees and less than
30 degrees, build an intermediate anchor post assembly at the deflection
point. If the change in alignment is 30 degrees or more, build a corner
post assembly at the deflection point.
B. Type CLT
Fence. If the fence changes
alignment by more than 1 degree but not more than 4 degrees, install line posts
encased in concrete at all horizontal deflection points. If the change in
alignment exceeds 5 degrees, provide a post brace and truss rod in each fence
panel adjacent to the post located at the angle point. If the change in
alignment exceeds 5 degrees, construct the footings for all post located at
deflection points as specified for end posts.
607.06 Line Posts. Set line posts according to the
following:
A. Type 47 Fence. Space line posts at intervals not to exceed 12
feet (3.6 m). Anchor line posts at the bottom of dips or depressions in
the ground surface in concrete. If channels or streams cross the fence
line, construct crossings as shown on the plans.
On tangents, place
line posts so that the fabric, when installed on the side toward the highway,
is 2 feet (0.6 m) from the Right-of-Way line. If adjacent to Right-of-Way
lines with less than 5740 feet (1750 m) radius (in excess of 1 degree
curvature), construct line posts on chords so that the fabric, when installed
on the side toward the highway, is not less than 2 feet (0.6 m) or more than 8
feet (2.4 m) from the Right-of-Way line.
Locate posts at
points of horizontal deflection so that the fence fabric will bear against the
post.
B. Type CLT
Fence. Protect the tops of
driven line posts by drive caps or other method to prevent distortion of the
exposed end. Space line posts at not more than 10-foot (3 m)
centers, and place them so that, when the wire is fastened on the side toward
the highway, it is 1 foot (0.3 m) from the Right-of-Way line.
607.07 Fabric. If setting posts in concrete, do
not erect the fabric until after 5 days from the time of setting the posts when
using regular concrete, or until after 3 days when using concrete with high
early strength cement,
Stretch
and securely fasten Type 47 fabric to line posts using galvanized ties.
At a minimum, use one tie each for the top and bottom horizontal wires and one
tie for each alternate horizontal wire below the top horizontal wire.
Fasten
chain-link fabric to the line posts using clips or bands spaced approximately
14 inches (0.4 m) apart, and to the top rail or top tension wire using bands or
tie wires at approximately 24-inch (0.6 m) intervals or less. Join
successive rolls of fabric by weaving a single picket into the ends of the
rolls to form a continuous mesh.
607.08 Barbed Wire. If barbed wire
is specified, stretch and fasten it in the same manner as woven wire fabric.
607.09 Method of Measurement. The
Department will measure Fence, Type ___ by the number of feet (meters),
complete in place. The Department will measure along the top of the fence
from outside to outside of end posts, exclusive of gates and other openings.
The
Department will count Gate, Type ___ by the number of complete units of the
size and type specified.
The
Department will measure Fenceline Seeding and
Mulching by the number of feet (meters) of fence. The Department will measure
along the top of the fence from outside to outside of end posts, exclusive of
gates and other openings.
607.10 Basis of Payment. The Department
will pay for accepted quantities at the contract prices as follows:
Seeding
and Mulching shall be paid under Item 607
Seeding and Mulching
Item
Unit
Description
607
Foot
(Meter)
Fence, Type___
607
Each
Gate, Type___
607
Foot
(Meter)
Fenceline Seeding and Mulching