323113 - CHAIN LINK FENCES AND GATES.DOC

UNIT TRAINING EQUIPMENT SITE ADD/ALT

Copyright 2009 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

SECTION 323113 - CHAIN LINK FENCES AND GATES

Revise this Section by deleting and inserting text to meet Project-specific requirements.

This Section uses the term "Architect." Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes chain-link fences and swing gates.

1.2 PERFORMANCE REQUIREMENTS

Retain this article if delegating design of fence and gate framework to Contractor. If not retaining, specify post size, type, and spacing here or show on Drawings.

A. Delegated Design: Design chain-link fences and gates, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated.

B. Structural Performance: Chain-link fence and gate framework shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated according to ASCE 7-05:

Retain one of two subparagraphs below.

1. Minimum Post Size and Maximum Spacing: Determine according to CLFMI WLG 2445, based on mesh size and pattern specified and on the following:

Options in subparagraphs below are examples only; revise to suit Project. Consult a structural engineer experienced in design wind loads applicable to Project. Verify compliance with codes. See Evaluations.

a. Wind Loads: 90 mph (3 sec. gust)

b. Exposure Category: C

c. Fence Height: As indicated on Drawings

d. Material Group: IA, ASTM F 1043, Schedule 40 steel pipe

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product indicated

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

First paragraph below assumes manufacturer's standard-size Samples are acceptable. Revise to suit Project.

C. Samples: For each polymer-coated product and for each color and texture specified, in 6-inch (150-mm) lengths for components and on full-sized units for accessories.

Paragraph below is defined in Division 01 Section "Submittal Procedures" as a "Delegated-Design Submittal." Retain if Work of this Section is required to withstand specific design loads and design responsibilities have been delegated to Contractor or if structural data are required as another way to verify compliance with performance requirements. Professional engineer qualifications are specified in Division 01 Section "Quality Requirements."

D. Delegated-Design Submittal: For chain-link fences and gate framework indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

1.4 INFORMATIONAL SUBMITTALS

A. Product Certificates: For each type of chain-link fence and gate, from manufacturer.

B. Product Test Reports: For framing strength according to ASTM F 1043.

C. Sample of special warranty.

1.5 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.

1.6 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of chain-link fences and gates that fail in materials or workmanship within specified warranty period.

1. Failures include, but are not limited to, deterioration of metals, metal finishes, and other materials beyond normal weathering.

Verify available warranties and warranty periods for units and components and insert number below.

2. Warranty Period: Five years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 CHAIN-LINK FENCE FABRIC

A. General: Provide fabric in one-piece heights measured between top and bottom of outer edge of selvage knuckle or twist. Comply with CLFMI Product Manual and with requirements indicated below:

ASTM standards and CLFMI Product Manual limit height of fence fabric to 12 feet (3.66 m).

1. Fabric Height: 6’-0”.

Wire diameter and mesh sizes in first two subparagraphs below are commonly available and are limited to certain heights depending on the usage of the fence. See ASTM standards and CLFMI Product Manual.

Retain first subparagraph below for steel wire fabric mesh. CLFMI limits wire diameter in last option to residential applications, but other standards do not make this distinction.

2. Steel Wire Fabric: Wire with a diameter of 0.148 inch (3.76 mm).

CLFMI limits wire diameter in first option in first subparagraph below to residential applications, but other standards do not make this distinction.

a. Mesh Size: 2 inches (50 mm) Retain one of first three subparagraphs below for metallic-coated steel wire fabric.

b. Aluminum-Coated Fabric: ASTM A 491, Type I, 0.40 oz./sq. ft. (122 g/sq. m).

c. Zinc-Coated Fabric: ASTM A 392, Type II, Class 1, 1.2 oz./sq. ft. (366 g/sq. m) with zinc coating applied before weaving.

d. Zn-5-Al-MM Aluminum-Mischmetal-Coated Fabric: ASTM F 1345, Type III, Class 1, 0.60 oz./sq. ft. (183 g/sq. m).

Retain first subparagraph below for polymer coating over metallic-coated steel wire fabric.

e. Polymer-Coated Fabric: ASTM F 668, Class 1 over aluminum-coated steel wire.

1) Color: As selected by Architect from manufacturer's full range, complying with ASTM F 934.

Retain first subparagraph below for aluminum wire fabric mesh.

3. Aluminum Wire Fabric: ASTM F 1183, with mill finish, and wire diameter of 0.148 inch (3.76 mm).

a. Mesh Size: 2 inches (50 mm).

Retain first option in subparagraph below for fabric less than 72 inches (1830 mm) high.

4. Selvage: : Twisted top and knuckled bottom.

2.2 FENCE FRAMING

Retain this article for industrial and commercial chain-link fences. ASTM F 1043 is applicable to industrial chain-link fences up to 12 feet (3.66 m) high with line posts at maximum spacing of 10 feet (3 m) o.c. If default values do not suit Project, insert sizes and minimum weights of components.

Line post selection based on wind speed is described in CLFMI WLG 2445.

Retain one or more post and rail types in this article that comply with ASTM F 1043. Types below are not identical to all types in the CLFMI Product Manual. If frame member size and shape are determined by manufacturer, require calculations or testing to indicate compliance with ASTM F 1043. Round steel pipe dimensions vary in ASTM F 1043 and ASTM F 1083. Consider retaining option in paragraph below if retaining option for Material Group IA, round steel pipe, Schedule 40, in "Heavy Industrial Strength" Subparagraph.

A. Posts and Rails: Comply with ASTM F 1043 for framing, including rails, braces, and line; terminal; and corner posts. Provide members with minimum dimensions and wall thickness according to ASTM F 1043 based on the following:

1. Fence Height: 6’-0”.

Retain one of first two subparagraphs below. Delete both if Contractor determines strength, material group, and dimensions of posts according to "Performance Requirements" Article.

2. Heavy Industrial Strength: Material Group IA, round steel pipe, Schedule 40.

Retain first subparagraph below if size is critical. According to ASTM F 1043, first four options are for both types of round pipe, fifth option is for Schedule 40 pipe only, and the last three options are for roll-formed steel C-section shapes.

a. Line Post: As indicated on Drawings Retain first subparagraph below if size is critical. According to ASTM F 1043, first three options are for both types of round pipe, fourth option is for Schedule 40 pipe only, and the last three options are for roll-formed steel C-section shapes.

b. End, Corner and Pull Post: As indicated on Drawings Always retain option for intermediate rails in first subparagraph below if fence height is 12 feet (3.66 m) or higher. According to ASTM F 1553, all fences should have top framing, either a rail or tension wire. Bottom horizontal members enhance security and should be specified on any fence constructed with slats or screening. Consider retaining options below or, alternatively, specify tension wire.

3. Horizontal Framework Members: Comply with ASTM F 1043.

Retain first subparagraph below if top rails are not specified. Revise to include truss rod assemblies.

4. Brace Rails: Comply with ASTM F 1043.

5. Metallic Coating for Steel Framing:

Retain one of first four subparagraphs below or, for Contractor's option, retain first five subparagraphs. Verify coating availability with manufacturers.

a. Type A zinc coating.

b. Type B zinc with organic overcoat.

c. External, Type B zinc with organic overcoat and internal, Type D zinc-pigmented coating.

d. Type C, Zn-5-Al-MM alloy coating.

e. Coatings: Any coating above.

6. Polymer coating over metallic coating.

a. Color: Match chain-link fabric As selected by Architect from manufacturer's full range, complying with ASTM F 934.

2.3 TENSION WIRE

Always retain this article if fence has no top rail. Bottom horizontal members enhance security and should be specified on any fence constructed with slats or screening. Consider specifying top and bottom tension wire or, alternatively, specify top and bottom rails.

Retain one of two paragraphs below for tension wire to match fabric material and, if applicable, coating weight.

A. Metallic-Coated Steel Wire: 0.177-inch- (4.5-mm-) diameter, marcelled tension wire complying with ASTM A 817 and ASTM A 824, with the following metallic coating:

Retain one of three subparagraphs below.

1. Type I, aluminum coated (aluminized).

2. Type II, zinc coated with minimum coating weight matching chain-link fabric coating weight.

3. Type III, Zn-5-Al-MM alloy with minimum coating weight matching chain-link fabric coating weight

B. Polymer-Coated Steel Wire: 0.148-inch- (3.8-mm-) diameter, tension wire complying with ASTM F 1664, Class 1 over aluminum-coated steel wire.

1. Color: Match chain-link fabric. As selected by Architect from manufacturer's full range, complying with ASTM F 934.

2.4 FITTINGS

A. General: Comply with ASTM F 626.

B. Barbed Wire Arms: : Aluminum, with clips, slots, or other means for attaching strands of barbed wire, and means for attaching to posts; for each post unless otherwise indicated, and as follows:

1. Provide line posts with arms that accommodate top rail or tension wire.

2. Provide corner arms at fence corner posts.

3. Type I, single slanted arm.

Retain last subparagraph above or first subparagraph below for attaching three or fewer barbed wire strands.

4. Type II, single vertical arm.

5. Type III, V-shaped arm.

Retain last subparagraph above for attaching six barbed wire strands or subparagraph below for attaching five. Because V-shaped arms can provide a handhold, they may not be optimal for maximum-security applications where climbing is a threat.

6. Type IV, A-shaped arm.

C. Finish:

1. Metallic Coating for Pressed Steel or Cast Iron: Not less than 1.2 oz./sq. ft. (366 g /sq. m) zinc.

ASTM F 626 specifies that the polymer coating match the color coating of the fence chain-link fabric.

a. Polymer coating over metallic coating.

2. Aluminum: Mill finish.

2.5 BARBED WIRE

If retaining this article, describe components for barbed wire installation, along with barbed wire arms in "Fittings" Article, to suit Project. If more than one arrangement of components is required, indicate location of each on Drawings. Barbed wire descriptions below are examples. Revise to suit product and Project.

A. Steel Barbed Wire: Comply with ASTM A 121, for two-strand barbed wire, 0.099-inch- (2.51-mm-) diameter line wire with 0.080-inch- (2.03-mm-) diameter, four-point round barbs spaced not more than 5 inches (127 mm) o.c.

1. Aluminum Coating: Type A.

2. Zinc Coating: Type Z, Class 3.

Barbs are not polymer coated.

B. Polymer-Coated, Galvanized-Steel Barbed Wire: Comply with ASTM F 1665 two-strand barbed wire, 0.080-inch- (2.03-mm-) diameter line wire with 0.080-inch- (2.03-mm-) diameter, four-point round aluminum alloy barbs spaced not more than 5 inches (127 mm) o.c.:

1. Polymer Coating: Class 1 over aluminum-coated steel wire.

a. Color: Match chain-link fabric. As selected by Architect from manufacturer's full range, complying with ASTM F 934.

2.6 GROUT AND ANCHORING CEMENT

A. Nonshrink, Nonmetallic Grout: Premixed, factory-packaged, nonstaining, noncorrosive, nongaseous grout complying with ASTM C 1107. Provide grout, recommended in writing by manufacturer, for exterior applications.

B. Erosion-Resistant Anchoring Cement: Factory-packaged, nonshrink, nonstaining, hydraulic-controlled expansion cement formulation for mixing with potable water at Project site to create pourable anchoring, patching, and grouting compound. Provide formulation that is resistant to erosion from water exposure without needing protection by a sealer or waterproof coating and that is recommended in writing by manufacturer, for exterior applications.

PART 3 - EXECUTION

3.1 INSTALLATION

Verify that survey in first paragraph below is specified in Division 01 Section "Execution" or is otherwise available. Consider using sleeves to leave voids in new concrete substrates.

A. Examine areas and conditions, with Installer present, for compliance with requirements for site clearing, earthwork, pavement work, and other conditions affecting performance of the Work.

1. Do not begin installation before final grading is completed unless otherwise permitted by Architect.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

C. Stake locations of fence lines, gates, and terminal posts. Do not exceed intervals of 500 feet (152.5 m) or line of sight between stakes. Indicate locations of utilities, lawn sprinkler system, underground structures, benchmarks, and property monuments.

D. Install chain-link fencing to comply with ASTM F 567 and more stringent requirements indicated.

Retain first two paragraphs below for locations with rock-free, stable soil conditions. Revise if conditions include unstable or rocky soils. See ASTM F 567 default requirements.

E. Post Excavation: Drill or hand-excavate holes for posts to diameters and spacings indicated, in firm, undisturbed soil.

F. Post Setting: Set posts in concrete at indicated spacing into firm, undisturbed soil.

1. Verify that posts are set plumb, aligned, and at correct height and spacing, and hold in position during setting with concrete or mechanical devices.

Retain first subparagraph below for concrete footings.

2. Concrete Fill: Place concrete around posts to dimensions indicated and vibrate or tamp for consolidation. Protect aboveground portion of posts from concrete splatter.

Retain one of first four subparagraphs below to suit Project.

a. Exposed Concrete: Extend 2 inches (50 mm) above grade; shape and smooth to shed water.

Retain options in first paragraph below to suit Project. Where fencing changes direction by 15 degrees or more, at abrupt changes in grade, and for long stretches of fence in the range of 300 to 500 feet (91.4 to 152.5 m), manufacturers may recommend locating pull posts with braces at both sides.

G. Terminal Posts: Locate terminal end, corner, and gate posts per ASTM F 567 and terminal pull posts at changes in horizontal or vertical alignment of 15 degrees or more.

Revise first paragraph below for unusual load conditions. Posts are usually spaced 10 feet (3 m) o.c.

H. Line Posts: Space line posts uniformly as indicated on Drawings.

Retain first paragraph below if applicable.

I. Tension Wire: Install according to ASTM F 567, maintaining plumb position and alignment of fencing. Provide horizontal tension wire at the following locations:

1. As indicated on Drawings Fabric in first paragraph below is usually placed outside framework. Retain, revise, or delete dimension to suit Project. 2 inches (50 mm) complies with ASTM F 567 and is usually specified, but tennis courts require 1 inch (25 mm) between finish grade and bottom of selvage.

J. Chain-Link Fabric: Apply fabric to outside of enclosing framework. Leave 1 1/2 inch (38.1 mm) – 2 1/2 inches (63.5 mm) between finish grade or surface and bottom selvage unless otherwise indicated.

Retain first paragraph below if applicable.

K. Barbed Wire: Install barbed wire uniformly spaced as indicated on Drawings. Pull wire taut, install securely to extension arms, and secure to end post or terminal arms.

L. Install gates according to manufacturer's written instructions, level, plumb, and secure for full opening without interference. Attach fabric as for fencing. Attach hardware using tamper-resistant or concealed means. Install ground-set items in concrete for anchorage. Adjust hardware for smooth operation and lubricate where necessary.

M. Gates: Adjust gates to operate smoothly, easily, and quietly, free of binding, warp, excessive deflection, distortion, nonalignment, misplacement, disruption, or malfunction, throughout entire operational range. Confirm that latches and locks engage accurately and securely without forcing or binding.

END OF SECTION 323113