Attachment 4 - MAHG 23-00002 Fence Specifications.pdf

Impasse II Specification Ameristar Perimeter Security USA Inc. Rev. 07/01/2016

AMERISTAR® PERIMETER SECURITY USA INC.

IMPASSE II®- High Security Steel Fence System – Ornamental Pale

OR APPROVED EQUAL

Construction Specification

PART 1 - GENERAL

1.01 WORK INCLUDED

The contractor shall provide all labor, materials and appurtenances necessary for installation of the steel corrugated pale security fence system defined herein at Keesler Air Force Base.

1.02 SYSTEM DESCRIPTION

The manufacturer shall supply a total steel ornamental pale high security fence system of the Ameristar® Impasse II® model, Gauntlet design, or approved equal. The system shall include all components (i.e., pales, rails, posts, gates and hardware) required.

1.03 QUALITY ASSURANCE

The contractor shall provide laborers and supervisors who are thoroughly familiar with the type of construction involved and materials and techniques specified.

1.04 REFERENCES

ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy Coated (Galvannealed) by the Hot-Dip Process.

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

ASTM D523 - Test Method for Specular Gloss.

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

ASTM D1654 - Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments.

ASTM D2244 - Test Method for Calculation of Color Differences from Instrumentally Measured Color Coordinates.

ASTM D2794 - Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact).

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

ASTM F2408 – Ornamental Fences Employing Galvanized Steel Tubular Pickets.

1.05 SUBMITTAL

The manufacturer's submittal package shall be provided prior to installation.

1.06 PRODUCT HANDLING AND STORAGE

Upon receipt at the job site, all materials shall be checked to ensure that no damage occurred during shipping or handling. Materials shall be stored in such a manner to ensure proper ventilation and drainage, and to protect against damage, weather, vandalism and theft.

1.07 PRODUCT WARRANTY

A. All structural fence components (i.e. rails, pales, and posts) shall be warranted within specified limitations, by the manufacturer for a period of 15 years from date of original purchase. Warranty shall cover any defects in material finish, including cracking, peeling, chipping, blistering or corroding.

PART 2 - MATERIALS

2.01 MANUFACTURER

A. The steel ornamental pale high security fence system shall conform to Ameristar Impasse II model, Gauntlet 3-Rail style manufactured by Ameristar Perimeter Security Inc., in Tulsa, Oklahoma, or an approved equal.

Attachment 4

FA301024R0005

2.02 MATERIAL

A. Steel material for fence framework (i.e., corrugated pales, rails and posts), when galvanized prior to forming, shall conform to the requirements of ASTM A924/A924M, with a minimum yield strength of 45,000 psi (310 MPa). The steel shall be hot-dip galvanized to meet the requirements of ASTM A653/A653M with a minimum zinc coating weight of 0.90 oz/ft2 (276 g/m2), Coating Designation G-90.

B. Material for corrugated pales shall be a nominal 2.75” x .75” x 14 Ga. The cross-sectional shape of the rails shall conform to the manufacturer's Impasse II® rail design a nominal 2” x 2” x 11 Ga. Pre-drilled holes in the Impasse II® rail shall be spaced 6” on center, providing a pale airspace of no greater than 3.25” or Pre-drilled holes in the Impasse II Anti-Scale rail shall be spaced 4.1875” on center, providing a pale airspace of no greater than 1.5” (38mm). Tamperproof fasteners shall be used to fasten each pale to rail at every intersection. Fence posts and gate posts shall meet the minimum size requirements of Table 1.

C. If applicable - Material for steel Impasse II privacy screening shall be 18 gauge pre-formed slats, providing complete screening coverage between pales and at pale to post connections. Impasse II privacy screening shall provide screening from top rail to bottom rail, and be capable of traversing terrain without impeding the raking capabilities of the fencing panel. Privacy screening not available for Impasse II Anti-Scale model.

2.03 FABRICATION

A. Pales, rails and posts shall be pre-cut to specified lengths. Impasse II rails shall be pre-punched to accept tamperproof security fasteners. Post flange shall be pre-punched to accept rail to post attachment. Post web shall be punched providing a clear opening for interior of rails to align throughout the entire system for affixing conduit, video cabling, IDS wiring, and other components for a complete systems integration. Impasse II rails shall be attached to post flange providing a bracket-less design at each intermediate post.

B. The manufactured galvanized framework shall be subjected to the PermaCoat® thermal stratification coating process (high-temperature, in-line, multi-stage, multi-layer) including, as a minimum, a six-stage pretreatment/wash, an electrostatic spray application of an epoxy base, and a separate electrostatic spray application of a polyester finish. The base coat shall be a thermosetting epoxy powder coating (gray in color) with a minimum thickness of 2 mils (0.0508mm). The topcoat shall be a “no-mar” TGIC polyester powder coat finish with a minimum thickness of 2 mils (0.0508mm). The color shall be (specify Black, Bronze, White, or Desert Sand). The stratification-coated framework shall be capable of meeting the performance requirements for each quality characteristic shown in Table 2.

C. Completed panels shall be capable of supporting a 400 lb. load (applied at midspan) without permanent deformation. Panels shall be biasable to a 30˚ change in grade.

D. Impasse II fence system shall be designed to minimize the system impedance to comply with IEEE grounding requirements. No additional grounding material, beyond the structure grounding lug installation, will be required to create a safe low resistance fence system. By way of fence construction, the entire fence system is inherently grounded without the need for any additional work.

Grounding location at the post is for taking the fence system to site ground.

E. Swing gates shall be fabricated using 2” sq. x 12ga rail, 2” sq. x 12ga. gate ends, and 2.75” x .75” x 0.075 pales. Gates that exceed 6’ in width will have a 2” sq. x 11ga. intermediate upright. All rail and upright intersections shall be joined by welding. All pale and rail intersections shall also be joined by welding.

F. Sliding cantilever gates shall be TransPort IS design matching style, height, and color of fence system. The dual enclosed track slide gate shall be an aluminum component design using tracks, uprights, pales, hardware, fittings, and fasteners. Gate installation shall comply with latest ASTM F2200 standards for automated gates, regardless if the gate is of manual operation.

PART 3 - EXECUTION

3.01 PREPARATION

All new installation shall be laid out by the contractor in accordance with the construction plans.

3.02 FENCE INSTALLATION

Fence post shall be spaced according to Table 3, plus or minus ¼”. 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 the line and end posts with fasteners supplied by the manufacturer. Attachment to corner post shall be made using brackets and fasteners supplied by the manufacturer (See Figure 1). 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). 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.

3.03 FENCE INSTALLATION MAINTENANCE

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 two (2) coats of custom finish paint matching fence color. Failure to seal exposed surfaces per steps 1-3 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.

3.04 GATE INSTALLATION

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 manufacture of the gate and shall be installed per manufacturer’s recommendations.

3.05 CLEANING

The contractor shall clean the jobsite of excess materials; post-hole excavations shall be scattered uniformly away from posts.

Table 1 – Minimum Sizes for Impasse II® Posts

Fence Posts (Nominal) Panel Height

3” x 2.75” x 12 Ga. I-Beam Up to & Including 8’ Height 4” x 2.75” x 11 Ga. I-Beam Over 8’ Height up to & including 10’ Height

Gate Leaf Gate Height

Up to & Including 6’ Over 6’ Up to & Including 8’

Over 8’ Up to & Including 10’

Over 12’

Up to 4’ 3” x 12Ga. 3” x 12 Ga. 4” x 11 Ga. 4” x 11 Ga.

4’1” to 6’ 3” x 12Ga. 3” x 12 Ga. 4” x 11 Ga. 4” x 11 Ga.

6’1” to 8’ 4” x 11 Ga. 6” x 3/16” 6” x 3/16” 6” x 3/16”

8’1” to 10’ 4” x 11 Ga. 6” x 3/16” 6” x 3/16” 6” x 3/16”

10’1” to 12’ 6” x 3/16” 6” x 3/16” 6” x 3/16” 8” x 1/4"

12’1” to 16’ 6” x 3/16” 6” x 3/16” 8” x 1/4” 8” x 1/4"

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 3,500 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 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 – Impasse II® Post Spacing

Span 8’ Nominal (95” Rail)

Line & End Posts

Post Size 3” x 2.75” x 12 Ga. I-Beam 4” x 2.75” x 11 Ga. I-Beam

Post Settings ± ¼” O.C. 96” 96”

*For Corner Posts see Figure 1

Figure 1