32 31 13 - chain link fences and gates.pdf

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Attached to
West Pump Station Replacement Project
Solicitation number
Not on record
Issued by
Chester County, Pennsylvania

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This is a technical specification document for chain link fences and gates prepared by Herbert, Rowland & Grubic, Inc., applicable to the West Pump Station Replacement Project in Pennsylvania under Northwestern Chester County Municipal Authority. The specification details the materials, components, and installation requirements for chain link fence and gate systems as part of the broader site improvements for the pump station replacement project. The specification includes fence framework fabricated from hot-rolled steel pipe with minimum Grade 50 rating, zinc-coated steel fabric with 2-inch diamond mesh construction, barbed wire extensions, and swing gates with welded construction. Line posts are to be spaced at intervals not exceeding 10 feet, with corner and terminal posts of larger diameter to accommodate bracing and gate hardware. The installation must comply with ASTM F567 standards and related specifications, including proper concrete footing depths, fabric tensioning procedures with a mandatory 7-day cure period before installation, and specific tie-wire spacing and attachment methods. Gate posts must be factory-assembled swing gates capable of 180-degree operation with appropriate hinges, latches, and hardware suitable for padlock installation.

The specification mandates that all steel components conform to ASTM A1011/A1011M standards and be galvanized per ASTM A123/A123M for components and ASTM A153/A153M for hardware, with a minimum coating of 1.8 ounces per square foot. Concrete foundations must meet ASTM C94/C94M requirements with 2,500 psi strength at 28 days. The installer must be a company specializing in fence work, and the manufacturer must have a minimum of three years documented experience. All materials shall be delivered in packed cartons or firmly tied rolls, clearly identified with the manufacturer's name, and stored in secure, dry locations. Installation tolerances are stringent, with maximum plumb variation of 1/4 inch and maximum offset from indicated position of 1 inch. The specification references the Chain Link Fence Manufacturers Institute Product Manual and requires compliance with multiple ASTM International standards covering materials, coatings, terminology, installation practices, and gate specifications.

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32 31 13 – CHAIN LINK FENCES AND GATES

Herbert, Rowland & Grubic, Inc. 32 31 13 - 1 000483.0450

SECTION 32 31 13 – CHAIN LINK FENCES AND GATES

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Fence framework, fabric, and accessories.

2. Excavation for post bases.

3. Concrete foundation for posts and center drop for gates.

4. Manual gates and related hardware.

1.2 REFERENCES

A. ASTM International:

1. ASTM A121 - Standard Specification for Metallic-Coated Carbon Steel Barbed

Wire.

2. ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized)

Coatings on Iron and Steel Products.

3. ASTM A153/A153M - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

4. ASTM A392 - Standard Specification for Zinc-Coated Steel Chain-Link Fence

Fabric.

5. ASTM A491 - Standard Specification for Aluminum-Coated Steel Chain-Link Fence

Fabric.

6. ASTM A817 - Standard Specification for Metallic-Coated Steel Wire for Chain-Link

Fence Fabric and Marcelled Tension Wire.

7. A1011/A1011M-07 Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength

8. ASTM B429/B429M - Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube.

9. ASTM C94/C94M - Standard Specification for Ready-Mixed Concrete.

10. ASTM F552 - Standard Terminology relating to Chain Link Fencing.

11. ASTM F567 - Standard Practice for Installation of Chain-Link Fence.

12. ASTM F626 - Standard Specification for Fence Fittings.

13. ASTM F668 - Standard Specification for Polyvinyl Chloride (PVC) and Other

Organic Polymer-Coated Steel Chain-Link Fence Fabric.

14. ASTM F900 - Standard Specification for Industrial and Commercial Swing Gates.

15. ASTM F934 - Standard Specification for Standard Colors for Polymer-Coated Chain

Link Fence Materials.

16. ASTM F1043 - Standard Specification for Strength and Protective Coatings on

Metal Industrial Chain Link Fence Framework.

17. ASTM F1083 - Standard Specification for Pipe, Steel, Hot-Dipped Zinc-Coated

(Galvanized) Welded, for Fence Structures.

18. ASTM F1183 - Standard Specification for Aluminum Alloy Chain Link Fence Fabric.

Herbert, Rowland & Grubic, Inc. 32 31 13 - 2 000483.0450

19. ASTM F1184 - Standard Specification for Industrial and Commercial Horizontal Slide Gates.

20. ASTM F1345 - Standard Specification for Zinc - 5% Aluminum -Mischmetal Alloy- Coated Steel Chain-Link Fence Fabric.

B. Chain Link Fence Manufacturers Institute:

1. CLFMI - Product Manual.

1.3 SYSTEM DESCRIPTION

A. Fence Height: as indicated on Drawings.

B. Line Post Spacing: At intervals not exceeding 10 feet.

1.4 SUBMITTALS

A. Section 01 33 00 – Submittal Procedures: Requirements for submittals.

B. Shop Drawings: Indicate plan layout, spacing of components, post foundation dimensions, hardware anchorage, gates, and schedule of components.

C. Product Data: Submit data on fabric, posts, accessories, fittings and hardware.

1.5 CLOSEOUT SUBMITTALS

A. Section 01 77 00 – Closeout Requirements: Closeout procedures.

B. Operation and Maintenance Data: Procedures for submittals.

1.6 QUALITY ASSURANCE

A. Supply material according to CLFMI - Product Manual.

B. Perform installation according to ASTM F567.

1.7 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing Products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing work of this section.

1.8 DELIVERY, STORAGE AND HANDLING

A. Section 01 61 00 – Product Requirements: Requirements for transporting, handling, storing, and protecting products.

B. Deliver fence fabric and accessories in packed cartons or firmly tied rolls.

C. Identify each package with manufacturer's name.

Herbert, Rowland & Grubic, Inc. 32 31 13 - 3 000483.0450

D. Store fence fabric and accessories in secure and dry place.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Framing (Steel): ASTM A1011/A1011M; hot rolled steel strip, cold formed to pipe configuration, longitudinally welded construction, minimum Grade 50; coating conforming to ASTM F1043 Type B on pipe exterior and interior.

B. Fabric Wire (Steel): ASTM A392 Class 1 zinc coated steel wire.

C. Barbed Wire: ASTM A121 Coating Type Z, galvanized steel; 12 gage thick wire, 2 strands, 4 points at 3 inch oc.

D. Concrete: ASTM C94/C94M, Option A; Normal Portland Cement, 2,500 psi strength at 28 days.

2.2 COMPONENTS

A. Line Posts: 2.5 inch diameter.

B. Corner and Terminal Posts: 3 inch.

C. Gate Posts: 4 inch diameter.

D. Top and Brace Rail: 1-5/8 inch diameter, plain end, sleeve coupled.

E. Gate Frame: 2 inch diameter for welded or fittings and truss rod fabrication.

F. Fabric: 2 inch diamond mesh interwoven wire, 9 gage thick, top salvage twisted tight, bottom selvage twisted tight.

G. Tension Wire: 6 gage thick steel, single strand, marcelled, spiraled or crimped, aluminum-coated tension wire conforming to ASTM A824.

H. Tie Wire: Aluminum alloy steel wire.

2.3 ACCESSORIES

A. Caps: Cast steel galvanized; sized to post diameter, set screw retainer.

B. Fittings: Sleeves, bands, clips, rail ends, tension bars, fasteners and fittings; galvanized steel.

C. Extension Arms: Cast steel galvanized, to accommodate 3 strands of barbed wire, single arm, sloped to 45 degrees.

D. Gate Hardware: Fork latch with gravity drop, center gate stop and drop rod; two 180 degree gate hinges for each leaf suitable to accept a padlock.

Herbert, Rowland & Grubic, Inc. 32 31 13 - 4 000483.0450

2.4 GATES

A. General:

1. Gate Types, Opening Widths and Directions of Operation: As indicated on

Drawings.

2. Factory assemble gates.

3. Design gates for operation by one person.

B. Swing Gates:

1. Fabricate gates to permit 180 degree swing.

2. Gates Construction: ASTM F900 with welded corners. Use of corner fittings is not permitted.

2.5 FINISHES

A. Components and Fabric: Galvanized to ASTM A123/A123M for components; ASTM A153/A153M for hardware; ASTM A392 for fabric; 1.8 oz/sq ft coating.

B. Hardware: Galvanized to ASTM A153/A153M, 1.8 oz/sq ft coating.

C. Accessories: Same finish as framing.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install framework, fabric, accessories and gates according to ASTM F567.

B. Set intermediate, terminal, and gate posts plumb, in concrete footings with top of footing 1 inches above finish grade. Slope top of concrete for water runoff.

C. Line Post Footing Depth Below Finish Grade: ASTM F567.

D. Corner, Gate and Terminal Post Footing Depth Below Finish Grade: ASTM F567.

E. Brace each gate and corner post to adjacent line post with horizontal center brace rail and diagonal truss rods. Install brace rail one bay from end and gate posts.

F. Install top rail through line post tops and splice with 6 inch long rail sleeves.

G. Install center brace rail on corner gate leaves.

H. Place fabric on outside of posts and rails.

I. Do not stretch fabric until concrete foundation has cured 7 days.

J. Stretch fabric between terminal posts or at intervals of 100 feet maximum, whichever is less.

K. Position bottom of fabric 2 inches above finished grade.

Herbert, Rowland & Grubic, Inc. 32 31 13 - 5 000483.0450

L. Fasten fabric to top rail, line posts, braces, and bottom tension wire with tie wire at maximum 15 inches on centers.

M. Attach fabric to end, corner, and gate posts with tension bars and tension bar clips.

N. Install bottom tension wire stretched taut between terminal posts.

O. Install support arms sloped outward and attach barbed wire; tension and secure.

P. Support gates from gate posts. Do not attach hinged side of gate from building wall.

Q. Install gate with fabric and barbed wire overhang to match fence. Install a minimum of 2 hinges on each gate leaf, latch, catches, and drop bolt.

R. Provide concrete center drop to footing depth and drop rod retainers at center of double gate openings.

S. Install posts with 6 inches maximum clear opening from end posts to buildings, fences and other structures.

T. Excavate holes for posts to diameter and spacing indicated on Drawings without disturbing underlying materials.

U. Center and align posts. Place concrete around posts, and vibrate or tamp for consolidation. Verify vertical and top alignment of posts and make necessary corrections.

V. Extend concrete footings 1 inches above grade, and trowel, forming crown to shed water.

W. Allow footings to cure minimum 7 days before installing fabric and other materials attached to posts.

3.2 ERECTION TOLERANCES

A. Section 01 40 00 – Quality Requirements: Tolerances.

B. Maximum Variation From Plumb: 1/4 inch.

C. Maximum Offset From Indicated Position: 1 inch.

D. Minimum distance from property line: 6 inches.

END OF SECTION 32 31 13

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