Section_32_31_13_-_Chain_Link_Fences_&_Gates_rev.pdf

JODA – 197499 32 31 13 -1

CHAIN LINK FENCES AND GATES

SECTION 32 31 13

PART 1 GENERAL

1.1 SUMMARY

A. Includes But Not Limited To

1. Furnish and install complete fence and gate(s) as described in Contract Documents.

1.2 REFERENCES

A. American Society For Testing And Materials

1. ASTM A 123-00, 'Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products'

2. ASTM A 153-98, 'Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel

Hardware'

3. ASTM A 392-96, 'Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric'

4. ASTM A 570-98, 'Standard Specification for Steel, Sheet and Strip, Carbon, Hot-Rolled, Structural Quality'

5. ASTM A 1011-01, 'Standard Specification Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability'

6. ASTM C 1107-99, 'Standard Specification for Packaged Dry, Hydraulic-Cement Grout (Nonshrink)'

7. ASTM F-668, Class 2b, ‘Standard Specification for Polymer-Coated Steel Chain Link Fence’

8. ASTM F 1043-00, 'Standard Specification for Strength and Protective Coatings on Metal Industrial Chain Link Fence Framework'

9. ASTM F 1083-97, 'Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated (Galvanized) Welded, for Fence Structures'

1.3 SUBMITTALS

A. Quality Assurance/Control

1. Fabric – Manufacturer’s certificate showing compliance with specification requirements

2. Posts – Manufacturer’s certificate showing compliance with specification requirements

3. Rails - Manufacturer’s certificate showing compliance with specification requirements

4. Shop Drawings & Engineering Data shall be submitted in accordance with the requirements of section 013323 – Submittals.

PART 2 PRODUCTS

2.1 COMPONENTS

A. Fabric

1. Chain link –Wire fabric of 9 gauge core with 8 gauge finish, galvanized before weaving with 1.2 ounce zinc coating conforming to requirements of ASTM A 392, Class I, 2 inch mesh.

2. Selvages will be per the requirements of ASTM F 668 Class 2b requirements.

JODA – 197499 32 31 13 -2

B. Framework

1. Posts and rails shall be roll-formed, self-draining shapes meeting strength requirements of

ASTM F 669, Table 3, and with 2 ounce zinc coating per sq ft of surface area conforming to

ASTM A 123.

2. Line Posts -

a. 2.375 inch outside diameter Schedule 40 pipe weighing 3.65 pounds per lineal foot meeting requirements of ASTM F 1083.

3. Terminal And Corner Posts -

a. 2.875 inch outside diameter Schedule 40 pipe weighing 5.79 pounds per lineal foot meeting requirements of ASTM F 1083.

4. Gate Posts –

a. 4.0 inch outside diameter Schedule 40 pipe weighing 9.12 pounds per lineal foot meeting requirements of ASTM F 1083.

4. Top And Brace Rail -

a. 1.660 inch outside diameter Schedule 40 pipe weighing 2.27 pounds per lineal foot meeting requirements of ASTM F 1083.

5. Fittings - Pressed steel or malleable iron, hot-dip galvanized conforming to ASTM A 153.

Tie wires shall be 12 ga minimum galvanized steel or 9 gauge minimum aluminum wire.

6. Tension Wire - 7 ga minimum galvanized spring steel.

2.2 MIXES

A. Post Foundation Concrete

1. Cast-in-place Concrete: Class 3000 minimum per Section 03 30 00 – Normal

Weight Structural Concrete.

2. Mix thoroughly before placing.

PART 3 EXECUTION

3.1 INSTALLATION

A. Fence shall be installed by workmen skilled and experienced in erecting fences of this type and in accordance with Contract Documents.

1. When general ground contour is to be followed, make changes of grade in gradual, rolling manner.

2. Evenly space posts in line of fence a maximum of 10 feet center to center.

B. Post Foundations

1. Except atop retaining walls, set posts with concrete post foundations as specified below:

Line Posts: Diameter 8 inches - Depth 24 inches Gate, End, And Corner Posts: Diameter 12 inches - Depth 36 inches.

a. In native areas, set top of post foundation below grade sufficient to allow for placing of native forest duff.

b. Where fences are incorporated into slabs, measure post foundation depth from top of slab. Extend bottom of slab footing sufficient to allow specified amount of concrete around post. At existing slabs, install fence outside perimeter of slab.

C. Fence

JODA – 197499 32 31 13 -3

1. After posts have been permanently positioned and concrete cured for one week minimum, install framework, braces, and top rail. Join top rail with 6 inch minimum couplings at not more than 21 foot centers.

2. Stretch fabric by attaching one end to terminal post and supplying sufficient tension to other end of stretch so slack is removed.

a. Fasten fabric to line posts with tie wires. Pass ties over one strand of fabric and hook under line post flange.

b. Place one tie as close to bottom of fabric as is possible with additional ties equally spaced between top and bottom band on approximately equal spacings not to exceed 12 inches on center.

c. Attach fabric to roll formed terminals by weaving fabric into integral lock loops formed in post. Attach fabric to tubular terminals with tension bars and bands.

d. Hold fabric approximately 2 inches above finish grade line.

e. On top rail, space tie wires at no more than 24 inches on center.

f. Securely attach fittings and firmly tighten nuts.

3.2 CLEANING

A. Spread dirt from foundation excavations evenly around surrounding area unless otherwise directed. Leave area free of excess dribbles of concrete, pieces of wire, and other scrap materials.

END OF SECTION