Bakersfield Ph1B_32 31 19-Ornatmental Fence and Gate.pdf

Bakersfield National Cemetery Phase 1B Project 929 CM2002B

SECTION 32 31 19

ORNAMENTAL STEEL FENCE AND GATE

PART 1 – GENERAL

1.1 DESCRIPTION

This work consists of all labor, materials, and equipment necessary for furnishing and installing perimeter security fences, gates and accessories in conformance with the lines, grades, and details as shown.

1.2 RELATED WORK

B. Temporary Construction Fence: Section 01 00 00, GENERAL REQUIREMENTS.

C. Finish Grading: Sections 31 20 00, EARTH MOVING and 32 90 00, PLANTING.

1.3 MANUFACTURER'S QUALIFICATIONS

A. Fence, gates, and accessories shall be products of manufacturers regularly engaged in manufacturing items of type specified.

1.4 SUBMITTALS

A. In accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND

SAMPLES, furnish the following:

1. Manufacturer's Literature and Data: Fencing, gates and all accessories.

2. Manufacturer's Certificates:

a. Zinc-coating complies with specifications.

b. Structural characteristics comply with indicated and criteria.

c. Connections comply with requirements indicated.

B. Shop Drawings for all ornamental steel gates and fences.

1.5 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Society for Testing and Materials (ASTM):

A853.................Steel Wire, Carbon, for General Use

C94/C94M................Ready-Mixed Concrete

F626....................Fence Fittings

F1083...................Pipe, Steel, Hot-Dipped Zinc-Coated

(Galvanized) Welded, for Fence Structures.

B. ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated

(Galvanized) or Zinc-Iron Alloy Coated (Galvannealed) by the Hot-Dip

Process.

32 31 19-1 RHAA July 10, 2009

C. ASTM B117 - Practice for Operating Salt-Spray (Fog) Apparatus. \

D. ASTM D523 - Test Method for Specular Gloss.

E. ASTM D714 - Test Method for Evaluating Degree of Blistering in Paint.

F. ASTM D822 - Practice for Conducting Tests on Paint and Related Coatings and Materials using Filtered Open-Flame Carbon-Arc Light and Water

Exposure Apparatus.

G. ASTM D1654 - Test Method for Evaluation of Painted or Coated Specimens

Subjected to Corrosive Environments.

H. ASTM D2244 - Test Method for Calculation of Color Differences from

Instrumentally Measured Color Coordinates.

I. ASTM D2794 - Test Method for Resistance of Organic Coatings to the

Effects of Rapid Deformation (Impact).

J. ASTM D3359 - Test Method for Measuring Adhesion by Tape Test.

K. ASTM F2408 – Ornamental Fences Employing Galvanized Steel Tubular

Pickets.

PART 2 - PRODUCTS

2.1 GENERAL

A. Materials shall conform to ASTM F1083 ferrous metals, zinc-coated; and detailed specifications forming the various parts thereto; and other requirements specified herein. Zinc-coat metal members (including fabric, gates, posts, rails, hardware and other ferrous metal items) after fabrication shall be reasonably free of excessive roughness, blisters and sal-ammoniac spots.

2.2 ORNAMENTAL STEEL FENCE

A. Steel material for fence panels and posts shall conform to the requirements of ASTM A653/A653M, with a minimum yield strength of 45,000 psi (310 MPa) and a minimum zinc (hot-dip galvanized) coating weight of

0.90 oz/ft2 (276 g/m2), Coating Designation G-90.

B. Material for pickets shall be 1” square x 14 Ga. tubing. The rails shall be steel channel, 1.75” x 1. 75” x .105”. Picket holes in the rail shall be spaced 4.715” o.c. Fence posts and gate posts shall meet the minimum size requirements of Table 1.

2.3 FABRICATION

A. Pickets, rails and posts shall be pre-cut to specified lengths. Rails shall be pre-punched to accept pickets.

B. Pickets shall be inserted into the pre-punched holes in the rails and shall be aligned to standard spacing using a specially calibrated

32 31 19-2 RHAA July 10, 2009 alignment fixture. The aligned pickets and rails shall be joined at each picket-to-rail intersection by a fusion welding process, thus completing the rigid panel assembly. Producing a virtually seamless, spatter-free, good-neighbor appearance.

C. The manufactured panels and posts shall be subjected to an inline electrodeposition coating (E-Coat) process consisting of a multi-stage pretreatment/wash (with zinc phosphate), followed by a duplex application of an epoxy primer and an acrylic topcoat. The minimum cumulative coating thickness of epoxy and acrylic shall be 2 mils (0.058 mm). The color shall be Black. The coated panels and posts shall be capable of meeting the performance requirements for each quality characteristic shown in Table 2 (Note: The requirements in Table 2 meet or exceed the coating performance criteria of ASTM F2408).

D. The manufactured fence system shall be capable of meeting the vertical load, horizontal load, and infill performance requirements for Industrial weight fences under ASTM F2408.

E. Swing gates shall be fabricated using 1.75” x 14ga Forerunner double channel rail, 2” sq. x 11ga. gate ends, and 1” sq. x 14ga. pickets.

Gates that exceed 6’ in width will have a 1.75” sq. x 14ga. intermediate upright. All rail and upright intersections shall be joined by welding.

All picket and rail intersections shall also be joined by welding.

Gusset plates will be welded at each upright to rail intersection. Cable kits will be provided for additional trussing for all gates leaves over

6’.

2.4 Cantilevered Ornamental Gate

A. The materials used for cantilever gate framing shall be manufactured from aluminum (Designation 6063-T-6) with a yield strength of 25,000 psi, a tensile strength of 30,000 psi and a standard mill finish. The

TransPort™ top track shall be manufactured from aluminum (Designation

6063-T-6) with a yield strength of 25,000 psi, a tensile strength of

30,000 psi and a standard mill finish.

B. TransPort™ Impasse® Security cantilever gate frames shall be covered with 2-3/4” wide corrugated pales spaced 6” on center. Pales, top track and bottom rail shall be pre drilled to allow use of security fasteners for pale attachment. TransPort™ Aegis II® and Echelon II®

Ornamental cantilever gate frames shall be filled with 1” x .065” Ga.

square aluminum pickets. Pickets, top track and bottom rail shall be

32 31 19-3 RHAA July 10, 2009 pre drilled to allow use of pop rivets for picket attachment.

TransPort™ PermaCoat® and GalvOnAll™ Chain Link cantilever gates shall be filled with fabric meeting the wire mesh material and size required for associated chain link fence.

C. Each gate section shall be supplied with truss cables for proper bracing.

D. Two upper suspension rollers and two lower guide rollers shall be included with each gate.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install fence by properly trained crew, on previously prepared surfaces, to line and grade as shown. Install fence in accordance with the manufacturer's printed installation instructions, except as modified herein or as shown. Maintain all equipment, tools, and machinery while on the project in sufficient quantities and capacities for proper installation of posts, pickets,, rails, pales, and accessories.

B. Engage the services of a Registered Professional Land Surveyor or

Registered Civil Engineer specified in Section 01 00 00, GENERAL

REQUIREMENTS, to stake out and certify that the fence alignment meets the requirements as shown.

C. Fence post shall be spaced according to Table 3, plus or minus ½”. For installations that must be raked to follow sloping grades, the post spacing dimension must be measured along the grade. Fence panels shall be attached to posts with brackets supplied by the manufacturer. Posts shall be set in concrete footers having a minimum depth of 36” (Note: In some cases, local restrictions of freezing weather conditions may require a greater depth). The “Earthwork” and “Concrete” sections of this specification shall govern material requirements for the concrete footer.

Posts setting by other methods such as plated posts or grouted core-drilled footers are permissible only if shown by engineering analysis to be sufficient in strength for the intended application.

D. When cutting/drilling rails or posts adhere to the following steps to seal the exposed steel surfaces; 1) Remove all metal shavings from cut area. 2) Apply zinc-rich primer to thoroughly cover cut edge and/or drilled hole; let dry. 3) Apply 2 coats of custom finish paint matching fence color. Failure to seal exposed surfaces per steps 1-3

32 31 19-4 RHAA July 10, 2009 above will negate warranty. Ameristar spray cans or paint pens shall be used to prime and finish exposed surfaces; it is recommended that paint pens be used to prevent overspray. Use of non-Ameristar parts or components will negate the manufactures’ warranty.

E. Gate posts shall be spaced according to the manufacturers’ gate drawings, dependent on standard out-to-out gate leaf dimensions and gate hardware selected. Type and quantity of gate hinges shall be based on the application; weight, height, and number of gate cycles. The manufacturers’ gate drawings shall identify the necessary gate hardware required for the application. Gate hardware shall be provided by the manufacturer of the gate and shall be installed per manufacturer’s recommendations.

3.2 EXCAVATION

Excavation for concrete-embedded items shall be of the dimensions shown, except in bedrock. If bedrock is encountered before reaching the required depth, continue the excavation to the depth shown or 18 inches

(450 mm) into the bedrock, whichever is less, and provide a minimum of

2 inches (50 mm) larger diameter than the outside diameter of the post.

Clear loose material from post holes. Grade area around finished concrete footings as shown and dispose of excess earth as directed by the Resident Engineer.

3.3 POST SETTING

Install posts plumb and in alignment. Set post in concrete footings of dimensions as shown, except in bedrock. Thoroughly compact concrete so as it to be free of voids and finished in a slope or dome to divert water running down the post away from the footing.

3.4 POST CAPS

Fit all exposed ends of post with caps. Provide caps that fit snugly and are weathertight. Where top rail is used, provide caps to accommodate the top rail. Install post caps as recommended by the manufacturer and as shown.

3.5 SUPPORTING ARMS

Design supporting arms, when required, to be weathertight. Where top rail is used, provide arms to accommodate the top rail. Install supporting arms as recommended by the manufacturer and as shown.

32 31 19-5 RHAA July 10, 2009

3.6 TOP RAILS / AND BOTTOM RAILS

Install rails before installing pickets. Provide suitable means for securing rail ends to terminal and intermediate post.

3.7 ACCESSORIES

Supply accessories (post braces, truss rods, and miscellaneous accessories), as required and recommended by the manufacturer, to ensure complete installation.

3.8 GATES

Install gates plumb, level, and secure for full opening without interference. Set keepers, stops and other accessories into concrete as required by the manufacturer and as shown. Test gates, hardware, locking mechanisms and releases for proper operation. Adjust and lubricate as necessary.

3.9 REPAIR OF GALVANIZED SURFACES

Use galvanized repair compound, stick form, or other method, where galvanized surfaces need field or shop repair. Repair surfaces in accordance with the manufacturer's printed directions.

3.10 FINAL CLEAN-UP

Remove all debris, rubbish and excess material from the station.

Table 1 – Minimum Sizes for Montage II Posts

Fence Posts Panel Height

3” x 12 Ga. 8’ Height

Gate Leaf

Gate Height

Up to & Including

4’

Over 4’ Up to &

Including 6’

Over 6’ Up to &

Including 8’

14’1” to 16’ 6” x 3/16” 6” x 3/16” 6” x 3/16”

32 31 19-6 RHAA July 10, 2009

32 31 19-7 RHAA July 10, 2009

Table 2 – Coating Performance Requirements

Quality

Characteristics

ASTM Test Method Performance Requirements

Adhesion D3359 – Method B Adhesion (Retention of Coating) over

90% of test area (Tape and knife test).

Corrosion

Resistance

B117, D714 & D1654 Corrosion Resistance over 1,500 hours

(Scribed per D1654; failure mode is accumulation of 1/8” coating loss from scribe or medium #8 blisters).

Impact

Resistance

D2794 Impact Resistance over 60 inch lb.

(Forward impact using 0.625” ball).

Weathering

Resistance

D822 D2244, D523

(60˚ Method)

Weathering Resistance over 1,000 hours

(Failure mode is 60% loss of gloss or color variance of more than 3 delta-E color units).

Table 3 – Montage II – Post Spacing By Bracket Type

Span 8’ Nominal (92-5/8” Rail)

Post Size 2-1/2” 3” 2-1/2” 3” 2-1/2” 3”

Bracket

Type

Industrial

Universal

(BB302)

Industrial

Universal

(BB303)

Industrial

Flat Mount

(BB301)

Industrial

Swivel

(BB304)*

Post

Settings

± ½” O.C.

96” 96-1/2” 96” 96-1/2” *96” *96-

1/2”

*Note: When using swivel brackets on either or both ends of a panel installation, care must be taken to ensure the spacing between post and adjoining pickets meets applicable codes. This will require trimming one or both ends of the panel.

- - - E N D - - -