DIVISION 32 - SITE WORK
SECTION 32 31 13 - CHAIN LINK FENCING AND GATES
PAGE 1 OF 4
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PART 1 - GENERAL
1.1
Work of this section includes:
.1
1.2
Submittals
.1
1.3
Provide chain link fencing and gates.
Submit manufacturer's technical data and installation instructions for
metal fencing, fabric and accessories.
Quality Assurance
.1
Provide chain link fence and gates as complete unit controlled by a
single source including necessary erection accessories, fittings and
fastenings.
PART 2 - PRODUCTS
2.1
Acceptable Manufacturer
.1
Chain link fencing shall be as manufactured by Anchor Fence, Inc. or
the approved equivalent and shall include the following types of
fence:
a.
2.2
Galvanized steel fencing and fabric.
Materials
.1
Steel fabric shall be No. 9 ga. size steel wires, 2" mesh with top and
bottom selvages knuckled for fabric 60" high and under. Top and
bottom selvages to be twisted and barbed for fabric over 60" high.
Furnish one piece fabric widths for fencing up to 12' high. Finish Galvanized ASTM A 392, Class II, with not less than 2.0 oz. zinc per
sq.ft. of surface.
.2
Steel Framework, General: Galvanized steel, ASTM A 120 or A 123,
with not less than 1.8 oz. zinc per sq.ft. of surface.
.3
Fittings and Accessories: Galvanized steel to suit manufacturer's
standards.
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DIVISION 32 - SITE WORK
SECTION 32 31 13 - CHAIN LINK FENCING AND GATES
PAGE 2 OF 4
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.4
End, Corner and Pull Post
Minimum sizes and weights:
- Up to 6' fabric height, 2.375" O.D. steel pipe, 3.65 lbs. per lin. ft.
- Over 6' fabric height, 2.875" O.D. steel pipe, 5.79 lbs. per lin. ft.
.5
Line post to be spaced not more than 10'-0" o.c. unless otherwise
noted.
Minimum sizes and weights:
- Up to 6' fabric height, 1.90" O.D. steel pipe, 2.70 lbs. per lin. ft.
- Over 6' fabric height, 2.875" O.D. steel pipe, 5.79 lbs. per lin. ft.
.6
Gate Post:
Leaf width up to 6', 3.5" O.D. steel pipe, 4.85 lbs, per lin. ft.
.7
Fencing top and bottom rails shall be continuous 1.66 O.D. hot dip
galvanized, 2.27 lbs. per foot steel pipe. Top rail shall pass through
openings provided in post tops and each length shall be coupled with
an internal swaged sleeve for a distance of 3". Fabric shall be
attached to the top and bottom rail by means of double wrapped tie
wires spaced at intervals of 24" maximum. Provide means for
attaching rails securely to each gate, pull and end post.
.8
Wire ties shall be 11 gauge galvanized steel.
.9
Tension Wires - 7 gauge, coated coil spring wire, metal and finish to
match fabric.
.10 Provide manufacturer's standard adjustable brace at end and gate
posts and at both sides of corner posts with horizontal braced
located at mid-height of fabric attached with adjustable tightener.
.11 Fabricate gates of metal and finish to match fence. Assemble gate
frames by welding. Provide horizontal and vertical members to
ensure proper gate operation and attachment of fabric, hardware
and accessories and as follows:
a.
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Provide same fabric as fence.
DIVISION 32 - SITE WORK
SECTION 32 31 13 - CHAIN LINK FENCING AND GATES
PAGE 3 OF 4
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b.
Install diagonal cross-bracing consisting of 3/8" diameter
adjustable length truss rods.
c.
Fabricate perimeter frames of 4'-0" gate of minimum 2.375"
O.D. hot dip galvanized, 3.65 lbs. per foot steel pipe; 16 O.D.
gate perimeter frame shall be 2.875" O.D., hot dip galvanized,
5.79 lbs. per foot steel pipe. Paint all welds with a zinc based
paint.
d.
Hinges - Size and material to suit gate size, heavy duty,
galvanized, non-lift-off type, 1-1/2 pair of hinges for each leaf,
except provide 2 pair for each leaf at 16 foot wide opening.
e.
Latch - Forked type to permit operation from either side of gate.
f.
Provide gate keeper for securing free end of gate in both an
open and closed position.
g.
Provide roller to facilitate movement of gate over pavement.
.10 Concrete - Type II portland cement concrete, ASTM C 150, C 33
aggregate, and clean water. Mix materials to obtain concrete with a
minimum 28-day compressive strength of 3,000 psi, 0.46
water/cement ratio, 3/4" maximum size aggregate, maximum 3"
slump and 5" entrained air.
.11 Galvanized Repair Paint - High zinc dust content paint for
regalvanizing welds in galvanized steel.
PART 3 - EXECUTION
3.1
Installation
.1
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Drill or hand excavate holes for posts to diameters and spacing
indicated in such a manner as to disturb the least amount of existing
construction.
a.
Excavate holes for each post to 1'-0" diameter.
b.
Excavate hole depths approximately 4" lower than post bottom,
with bottom of post extending 3'-8" below finished surface.
DIVISION 32 - SITE WORK
SECTION 32 31 13 - CHAIN LINK FENCING AND GATES
PAGE 4 OF 4
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.2
Center, plumb and align posts in holes 4" above bottom of
excavations. Place concrete around posts and vibrate or tamp
for consolidation. Extend concrete footing 2" above grade and
trowel to a crown to shed water.
.3
Run top rails continuously through post caps. Provide
expansion couplings manufactured by fencing manufacturer.
.4
Install braces so posts are plumb when diagonal rod is under
proper tension.
.5
Pull fabric tight and tie to posts, rails and tension wires. Install
fabric to secure side of fence and anchor to framework so that
fabric remains in tension after pulling force is released.
.6
Install gates plumb, level and secure for full opening without
interference. Install ground set. Adjust hardware for smooth
operation and lubricate where necessary.
.7
Tie Wire - Use U-shape wire, conforming to diameter of pipe to
which attached, clasping pipe and fabric firmly with ends
twisted at least 2 full turns. Tie fabric to line posts at 12" O.C.;
tie fabric to rails and braces at 24" O.C.
.8
Install nuts for tension bands and hardware bolts on side of
fence opposite fabric side. Peen ends of bolt or score threads
to prevent removal of nuts.
END OF SECTION
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