8/1/01-[02831M-1] - 1 - Chain Link Fences and Gates

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8/1/01
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Chain Link Fences



and Gates

Copyright © by RQAW Corporation

SECTION 02831


CHAIN LINK FENCES AND GATES



PART 1
-

GENERAL


1.1

SUMMARY



A.

Sections Includes:




1.

Fence framework, fabric, and accessories.




2.

Excavation for posts and grade beams.




3.

Gates and related hardware.




4.

Security screening at out
door recreation roof.



B.

Related Sections:




1.

Section 02200: Earthwork




2.

Section 03300: Cast
-
In
-
Place Concrete




3.

Section 11192: Sliding Security Locking Devices




4.

Section 16112: Conduit




5.

Section 16120: Wire and Cables




6.

Divis
ion 17: Security Electronics


1.2

REFERENCES



A.

ASTM A121
-

Zinc
-
Coated (Galvanized Steel Barbed Wire.



B.

ASTM A123
-

Zinc (Hot Dip Galvanized) Coatings on Iron
and Steel Products.



C.

ASTM A153
-

Zinc Coating (Hot
-
Dip) on Iron and Steel
Hardware.



D.

ASTM A392
-

Zinc
-
Coated Steel Chain Link Fence Fabric.



E.

ASTM A446
-

Steel Sheet Zinc
-

Coated (Galvanized) by
the Hot
-
Dip Process.

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F.

ASTM A478
-

Chromium
-
Nickel Stainless and Heat
-
Resisting Steel Weaving Wire.



G.

ASTM A491
-

Aluminum
-
Coated Ste
el Chain Link Fence
Fabric.



H.

ASTM A569
-

Steel, Carbon, Hot
-
Rolled Sheet and Strip,
Commercial Quality.



I.

ASTM A817
-

Metallic
-
Coated Steel Wire for Chain Link
Fence Fabric.



J.

ASTM A824
-

Metallic Coated Steel Marcelled Tension
Wire for Use with
Chain Link Fence.



K.

ASTM F567
-

Installation of Chain Link Fence.



L.

ASTM F626
-

Fence Fittings.



M.

ASTM F669
-

Strength Requirements for Metal Post.



N.

ASTM F900
-

Industrial and Commercial Swing Gates.



O.

ASTM F1083
-

Pipe, Steel, Hot
-
Dipped Z
inc
-
Coated
(Galvanized) Welded, for Fence Structure.



P.

ASTM F1234
-

Protective Coating for Steel Framework for
Fence.



Q.

AISI 430
-

Stainless Steel.


1.3

SUBMITTALS



A.

Submit under provisions of Division 1.



B.

Shop Drawings: Indicate plan layout,

spacing of
components, post and grade beam details and dimensions,

details of post installation and bracing, hardware
anchorage, schedule of components, and hardware
schedule.



C.

Product Data: Provide manufacturer's technical data
and specifications fo
r products to be installed.



D.

Samples:




1.

Submit four (4) samples for barbed tape; length
sufficient to include two (2) barbed clusters 8"
minimum.

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2.

Submit four (4) samples of barbed tape clip.



E.

Certificate of Compliance: Prior to incorpora
tion in
construction, submit manufacturer's certificate that
specific products proposed for use meet or exceed
specified requirements.



F.

Test Reports: Submit results of specified test
indicating compliance with specified requirements.


1.4

QUALITY ASSU
RANCE



A.

Like items of materials shall be the end products of
one manufacturer.



B.

Installation: ASTM F567.


1.5

QUALIFICATIONS



A.

Manufacturer: Company specializing in manufacturing
the products specified in this Section with minimum
five (5) year
s documented experience.


1.6

FIELD MEASUREMENTS



A.

Verify field measurements prior to fabrication.


1.7

DELIVERY, STORAGE, AND HANDLING



A.

Store materials off ground. Protect against oxidation.


1.8

PROJECT CONDITIONS



A.

Do not install security fen
ce until clearing and finish
grading on both sides of the intended fence location is

approved.


1.9

WARRANTY



A.

Provide five (5) year warranty on chain link fence,
barbed tape, and gates.


1.10

CONTRACTOR EXPERIENCE



A.

The installing fence contractor s
hall have a minimum of
five (5) years experience on fencing projects of
similar nature as indicated in the specifications and
on the drawings.

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B.

The installing fence contractor shall have successfully
completed a fencing installation of similar nature a
s
specified and drawn having a construction value of at
least $200,000.00.



C.

Information confirming Items (A) and (B) above shall be
submitted to the Owner within 24 hours after the bid
time.



PART 2
-

PRODUCTS


2.1

ACCEPTABLE MANUFACTURERS



A.

Framew
ork:




1.

American Tube Company, Inc.




2.

Allied Tube and Conduit




3.

Wheatland Tube Company



B.

Fabric:




1.

Semmerling Fence and Supply, Inc.




2.

Anchor Fence Inc.




3.

Southeastern Wire




4.

Page Aluminized Steel Corporation



C.

Barbed Tape:




1.

American Security Fence Corporation




2.

Allied Tube and Conduit




3.

Michael Industries, Inc.



D.

Substitutions: Under provisions of Division 1.


2.2

MATERIALS



A.

Framework:




1.

Unless specified otherwise, framework may be Type
I or Type II

at Contractor's option.

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2.

Type I Pipe




a.

ASTM F1083 standard weight (Schedule 40),
plain ends.



3.

Type II Pipe




a.

ASTM A569, or ASTM A446, Grade D; cold
formed, electric welded; minimum yield
strength 50,000 psi.




b.

External surface triple
coated with hot
-
dipped zinc coating of 1.0 ounce
+

0.1 ounce
per square foot, followed by 30
+

15
micrograms of chromate per square inch and
0.5
+

0.2 mils of clear acrylic polyurethane.





The interior surface shall have a hot
-
dipped
zinc coating of 1.0
ounce
+

0.1 ounce per
square foot followed by a chromate conversion

coating or a zinc rich coating having a
minimum zinc powder coating of 91%, by
weight, capable of providing galvanic
protection.




4.

Dimensions and Weights


Outside Diameter


Type I Stee
l


Type II Steel

(OD) in inches


Weight/Foot


Weight/Foot

1.660






2.27



1.82

2.000






2.72



2.28

2.375






3.65



3.12

2.875






5.79



4.64

4.000






9.11



6.56

6.625





17.97


Not Permitted

8.625





28.55


Not Permitted




5.

Terminal P
osts (End, Corner, and Angle Posts)




a.

Minimum 4.000 inch OD at fences with fabric
extending 12' or less above finish grade.




b.

Minimum 6.625" OD elsewhere.




6.

Line Posts




a.

Minimum 2.875" OD at fences with fabric
extending 12' or less above fi
nish grade.




b.

Minimum 4.000" OD elsewhere.




7.

Gate Posts: Minimum 4.000" OD, unless otherwise
indicated.




8.

Rails (Top, Intermediate, Bottom) and Braces:
1.660" OD, unless otherwise noted.

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B.

Fabric:




1.

ASTM A392; Class 2 zinc coating, gal
vanized after
weaving.




2.

2" diamond
-
mesh, No. 9 gauge wire.




3.

Knuckled bottom selvage; twisted and barbed top
selvage except knuckled top salvage where
indicated.




4.

Minimum breaking strength for fence fabric 1,290
pounds.



C.

Barbed Wire: AST
M A121; 12.5 gauge 14 gauge four point
round barbs, 5" spacing; class 3 coating.



D.

Razor Tape




1.

AISI 430 stainless steel hardened to Rockwell
(30N) 30
-
37 minimum; 0.025" thick x 1" wide before

fabrication, die stamped to produce clusters of 4
needle
-
sharp barbs at 4" o.c., minimum 1.2" long,
offset in alternate directions 0.15" to 0.45".




2.

Permanently cold clench stainless steel strip to
minimum 230E wrap over stainless steel spring type

reinforcing wire conforming to ASTM A478, 0.098"
diameter,
minimum 140,000 psi tensile strength.




3.

The stainless steel strip between razor clusters
shall be 1/4" wide minimum after cold clenching to

create a strengthening flange extending out from
the wire, tapering off adjacent to the razor
cluster to allow m
aximum razor penetration.




4.

Coil Diameter: 30", plus or minus 2", when coil
compressed.




5.

Each coil shall have 51 loops and cover 19'
maximum when fully extended.




6.

Adjacent coils and individual loops in each coil
shall be clipped together in
five locations along
the circumference to obtain a concertina effect.




7.

Clips: Stainless steel, capable of withstanding a
minimum pull load of 200 pounds for a minimum of
30 seconds without separation, or other damage.

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E.

Tension Wire: ASTM A824, 9

gauge. Hog rings for
attaching wire to fabric shall be installed not more
than 24 inches on center.


2.3

ACCESSORIES



A.

Fittings




1.

ASTM F626; Malleable steel, cast iron, or pressed
steel.




2.

All fittings shall receive a hot
-
dip zinc coating,
con
forming to ASTM A123/ASTM A153.




3.

Fittings include extension arms for barbed wire,
tension bars and bands, clips, truss rod
assemblies, boulevard clamps, hardware, fabric and

barbed tape fastenings and accessories.



B.

Tension (Stretcher) Bars: One
-
p
iece lengths equal to
full height of fabric with a minimum cross
-
section of
1/4" by 3/4".




1.

Provide one tension bar for each gate post and end
post.




2.

Provide two tension bars for each corner post.



C.

Tension (Stretcher) Bar Bands: Steel, 3/4" x

1/10"
nominal to secure tension bars to end, corner, and gate

posts.



D.

Extension Arms




1.

18" long, 45E bracket type; slits at even spacings
for three strands of barbed wire.




2.

Extension arms shall permit permanent attachment
to post by means of
welding.




3.

Locations Other Than Terminal Posts: Breakaway
(Swing
-
down) type designed to give way when a
torque load of 40 to 50 foot
-
pounds is applied to
the arm.


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4.

Terminal Posts: Match other extension arms,
except breakaway feature may be dele
ted to
accommodate erection procedures if required.
Extension arms other than break away will require
approval.



E.

Post Tops




1.

Weathertight closure cap for tubular posts.




2.

One for each exposed tubular post end where equal
protection is not affo
rded by combination post
cap/extension arm.



F.

Truss Assembly: 3/8" truss rod and turnbuckle; capable
of withstanding 2,000 pounds tension.



G.

Boulevard Clamps: Two piece clamp with carriage bolts.



H.

Boulevard Bands




1.

Bands: 5/8" size.




2.

Band Bolts: 5/16" x 1
-
1/2" carriage bolts with
nuts.



I.

Tie Wire: 9 gauge galvanized steel wire, unless
otherwise indicated. Tie wires shall be painted orange

prior to installation.



J.

Hog Rings: 9 gauge galvanized steel. Hog rings shall
be painte
d orange prior to installation.



K.

Twist Ties: 18 gauge stainless steel, supplied by the
barbed tape manufacturer. Twist ties shall be painted
orange prior to installation.



L.

Ground Stakes: No. 3 rebar, 18" length with 3" hook,
hot dipped galvanize
d.


2.4

GATES



A.

Gate Frames: Type I or Type II pipe members, 2.375" OD
unless otherwise indicated.



B.

Provide truss rods of 3/8" minimum nominal diameter to
prevent sag or twist.


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C.

Provide vertical intermediate bracing of gate leaves,
spaced so t
hat members are no more than 8' apart.



D.

Provide horizontal gate leave braces and 5/16" minimum
diagonal truss rods as required to provide rigid
construction, free from sag or twist.



E.

Gate Fabric: Match fence fabric.



F.

Attach fabric to frame at
intervals not exceeding 12".

Secure with tension bars, tension bands, and 6 gauge
steel wire.


2.5

GATE HARDWARE



A.

Hardware:




1.

Pressed steel or cast iron, conforming to ASTM
F626.




2.

All hardware shall receive a hot
-
dip zinc coating,
conforming
to ASTM F626.



B.

Hinges:




1.

Rated heavy
-
duty and sized for the supported gate,
with large bearing surfaces for clamping in
position.




2.

Hinges shall not twist or turn under the action of
the gate.




3.

Hinges shall not allow the gate to be lifted
without first removing the hinges.




4.

The gates shall be capable of being opened and
closed easily by one person.



C.

Hold
-
Open
-
Stop (Duck
-
bill hold back):




1.

Mechanical device which automatically engages the
free end of the gate leaf when in the fu
ll open
position and holds it in the open position until
manually released.




2.

Provide hold open stops for manually operated
swinging vehicle gates.


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D.

Drop Bar




1.

Provide drop bar and keeper for multi
-
leaf swing
gates.


2.6

FINISHES



A.

Componen
ts Not Otherwise Indicated: Zinc
-
coated ASTM
A123.



B.

Hardware Not Otherwise Indicate: Zinc
-
coated ASTM
A153.



PART 3
-

EXECUTION


3.1

INSPECTIONS



A.

Verify grade provides flat surface allowing fence
construction with gap no more than indicated on
d
rawings between bottom of bottom rail and the ground
or grade beam.


3.2

INSTALLATION



A.

Install in accordance with ASTM F567.



B.

Erect fencing in straight lines between angle points.



C.

All chain link fences shall be electrically grounded as
shown o
n the Drawings.



D.

Postholes




1.

Depth:




a.

Minimum 24" plus 3" for each foot or fraction
thereof post exceeds 4 foot projection above
grade.




b.

Greater if indicated on drawings.




2.

Diameter:




a.

Minimum 4 times post diameter.




b.

Holes for

line posts shall be 12" minimum
diameter.




c.

Holes for gate, corner, and pull posts shall
be at 16" minimum diameter.




d.

Greater if indicated.


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3.

Work concrete into post holes to leave no voids.




4.

Provide crown watershed finish on the top su
rface
of concrete.



D.

Grade Beams




1.

Size: As indicated on Drawings.




2.

Work concrete into grade beams to leave no voids.




3.

The top surface of the grade beam shall slope in
one direction in order not to trap water run
-
off,
unless otherwise ind
icated.



E.

Line Posts




1.

Space posts equidistant in the fence
-
line not more
than 10' on centers and in true lines.




2.

Set posts plumb and with 3" of concrete under
post.



F.

Terminal Posts




1.

Terminal posts shall be used at beginning and end
of

each continuous length of fence, at changes in
vertical or horizontal alignment of 15E or more,
and at intervals not exceeding 800'.




2.

Where runs are greater than 800', space terminal
posts evenly between corner or end posts.




3.

Diagonally brace te
rminal posts to adjacent line
posts.



G.

Rails, Braces, and Truss Rods




1.

Install on the side of the fence least accessible
to inmates.




2.

Connect rails to posts using boulevard clamps.




3.

Brace gate and terminal posts to adjacent line
posts with

a horizontal compression member and
diagonal truss rods used as tension members.


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H.

Top Rail




1.

Install rail continuously through post caps or
extension arms.




2.

Each joint where a rail meets a post shall be
secured so that no perceivable movemen
t between
the two pieces takes place when the fence fabric
is flexed.



I.

Intermediate and Bottom Rails




1.

Install rails in one piece between posts and flush
with posts on fabric side.




2.

Each joint where a rail meets a post shall be
secured so that

no perceivable movement between
the two pieces takes place when the fence fabric
is flexed.




3.

Where grade beam is used, anchor bottom rail to
grade beam. Type, size, and spacing of anchors as

indicated on drawings.



J.

Threaded Connectors and Access
ories




1.

Peen threaded connectors and accessories after
installation.



K.

Fence Fabric




1.

Allow concrete to obtain sufficient strength
before installing fence fabric.




2.

Fasten fabric to terminal and gate posts with
tension bars and tension bar b
ands.




a.

Stretch fabric taut at intervals of 100'
maximum.




b.

Space tension bar bands not more than 12" on
o.c.




3.

Secure fabric to rails and posts with wire ties at
maximum 12" o.c. At 18' Security Fence with Grade

Beam and 12' Security Fence wi
th Grade Beam, also
secure the fabric to truss rods with hog rings at
maximum 12" o.c.

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a.

Weave tie wire through the fence fabric,
completely around the rail or post, and twist

wire securely with three twists on the rail
or post side of the fence; cut
of the tails
of the wire to preclude untwisting by hand.




b.

Twist shall be on side of fence least
accessible to inmates. Knuckle twist on ties

less than 8 feet above grade.




4.

Horizontal splicing of fabric on 18' high fences
is permitted if both sid
es of the splice are
secured to a horizontal rail at the splice.




5.

Vertical splicing of fabric is permitted if both
pieces of fabric are woven together.




6.

Completed fabric installation shall pass Fabric
Deflection Test.




7.

Secure fabric to tensi
on wire with wire ties at
24" o.c.



L.

Extension Arms and Post Caps




1.

Anchor post caps to posts with set screws to
prevent rotation and removal.




2.

Anchor extension arms to posts with set screws to
prevent rotation and removal. After installation
cut off head of set screw flush with arm. Tack
weld as shown on Drawings.



M.

Razor Wire




1.

Stretch single strand of barbed wire tight through
outer slots of each extension arm for support of
barbed tape, and secure with hog rings.



N.

Razor Tape




1.

Install razor tape where indicated.




2.

Install on the top of the extension arm and secure
each loop to the single strand of barbed wire and
the top of the fence fabric with twist ties.


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3.

Install on the perimeter fences additional coils
of barbed

tape where indicated on the drawings.
Attach to the fence fabric with twist ties at 9"
o.c. attach to other coils with twist ties at 9"
o.c.




4.

At buildings where 12' high fence terminates at
the building, unless otherwise indicated, a second

coil of
barbed tape shall be installed beneath the

extension arms.





a.

The second coil of razor tape shall be
secured to the single strand of razor wire
and to the fabric.




b.

The bottom of the second coil shall be 10'
above the adjacent finish grade.




5.

W
here coils rest on grade, secure coils to the
grade with ground stakes placed 10'
-

0" o.c.



O.

Gates




1.

Install gates plumb, level and secure for full
opening without interference. Adjust hardware for

smooth operation. Gate operators shall be
install
ed in strict accordance with the
manufacturer's recommendations.




2.

Modify gates and posts as required to receive
hardware as specified.




3.

The maximum clearance between the bottom of the
gate in closed position and finished grade shall
be as indicat
ed on the drawings.



P.

Tension Wire




1.

Install 1' from the top of fence fabric.




2.

Pull taut prior to installing chain link fabric.




3.

Secure at every post such that there shall be no
perceivable movement between the wire and the
posts when the
fabric is flexed.




4.

Fasten to posts with wire ties.




5.

Attach fabric to tension wire with galvanized
steel hog rings.

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6.

Hog rings shall be closed tightly around fabric
and tension wire to prevent any audible noise.


3.3

AUTOMATIC GATE SYSTEM


A.

PRODUCTS



1.

Model LDI
-
003 Federally approved. Manufactured by
Logical Decisions, Inc., 11887 Highway 64, Zachary, LA
70791, telephone 1
-
800
-
936
-
4283.


3.4

ERECTION TOLERANCES



A.

Maximum Variation from Plumb: 1/4".



B.

Maximum Offset from True Posit
ion: 1".



C.

All posts shall be able to pass a pull test when a
force of 48 pounds is applied perpendicular to the
fence at the top of the post. The post shall not
deflect more than one (1) inch at the location where
the force is applied.


3.5

TEMPORARY

SECURITY FENCES



A.

Install temporary fence in manner allowing maximum
possible material reuse.



B.

Temporary security fence shall match other fences
specified in this section, except as specified below.



C.

Grade beam is not required.



D.

Remove temp
orary security fencing when directed by the
Construction Manager (C.M.), salvaging removed
material, except expendables, such as tie wires.



E.

Disassemble salvageable materials in manner to avoid
damage beyond normal wear and tear. Remove concrete
footi
ngs from fence posts.



F.

Return salvaged materials to the State at on
-
site
location directed by the C.M.



G.

Restore grade to condition existing prior to removal of
temporary security fences. Provide additional earth
fill as required. Damage caused by

removal of
temporary security fences at paved areas will be
repaired by others.

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H.

Conduct metal sweep after removal of temporary fence,
see Section 02111.


3.6

FENCE FABRIC DEFLECTION TEST



A.

The test shall be performed on each panel on the 18'
Secur
ity Fence with Grade Beam, and the 12' Security
Fence with Grade Beam
only
. A panel shall be defined
as an area of fence fabric between two fence posts and
two fence rails.


B.

The deflection of the fabric shall be consistent and
uniform. No audible nois
e shall be generated by the
fence system before, during, or following the
deflection test.



C.

Deflection of fence fabric shall be no greater than 2"
when a force of 30 pounds is applied in the center of a

panel, perpendicular to the plan of the fence fab
ric.



D.

Fabric shall return to original position when force is
released.


3.7

FENCE POST RIGIDITY TEST



A.

Fence post rigidity shall be tested by applying a 50
-
pound force on the post, perpendicular to the installed

fabric, and mid
-
height on the post.
Post movement
measured at the point where the force is applied shall
not exceed 3/4 inch from the relaxed position.



B.

Every tenth post shall be tested for rigidity. When a
post fails this test, further tests on the next four
posts on either side of the

failed post shall be made.

All failed posts shall be removed, replaced, and
retested at the Contractor's expense.


3.8

MANUFACTURER'S REPRESENTATIVE



A.

Representative of manufacturers of barbed tape and
electric gate operators shall be on the construct
ion
site at the commencement of installation to provide
installation instructions and at other times as
requested by the Architect or the C.M.


3.9

ADJUSTING



A.

Adjust operable components for smooth, even operation.



B.

Field repair damaged galvanized s
urfaces.

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C.

Coordinate with other Bid Packages, as required.


3.10

INSTRUCTION OF DEPARTMENT PERSONNEL



A.

Instruct Department Personnel under provisions of Div.
1.



B.

Provide instruction for eight (8) people.



C.

Duration: Two (2) working days.



D
.

Demonstrate equipment and instruct Department Personnel
in the operation, repair and maintenance of the work
specified in this section. Coordinate with other Bid
Packages, as required, to ensure that equipment is
properly operational for instruction pur
poses.



END OF SECTION