TITLE: CAMP JOHNSON OVERPASS / HWY 17 BYPASS SECURITY FENCE UPGRADES

Transcription

1 CONTRACT # N B-0457 PROJECT # 15R036CN MACC # MAXIMO# TITLE: CAMP JOHNSON OVERPASS / HWY 17 BYPASS SECURITY FENCE UPGRADES ATTACHMENTS: CJ OVERPASS SECURITY UPGRADES Site Map SCOPE OF WORK: The contractor shall provide all material, labor, equipment, and supervision required to accomplish the following: General description The contractor shall upgrade the existing fence security with the addition of chain link fencing under the Camp Johnson overpasses along the Hwy 17 Bypass. These locations are identified in the SoW as WORKSITE 1, WORKSITE 2, and WORKSITE 3. The intention of this job is to install new chain link fence under the overpasses to the existing chain link fence which runs along both sides of Hwy 17 Bypass. This will enhance security by making it more difficult to access Base property from Hwy 17. Bypass detailed requirements and specifications The contractor shall: WORKSITE 1 WORKSITE 2 WORKSITE 3 Install approximately 780lf of new 7 ft. high chain link fence with barb wire top (8ft. total) at areas identified on Site Plan #3. End posts shall be installed adjacent to existing chain link Install approximately 720lf of new 7 ft. high chain link fence with barb wire top (8ft. total) at areas identified on Site Plan #4. End posts shall be installed adjacent to existing chain link Install approximately 500lf of new 7 ft. high chain link fence with barb wire top (8ft. total) at area identified on Site Plan #5. End posts shall be installed adjacent to existing chain link Install approximately 230lf of new 7 ft. high chain link fence with barb wire top (8ft. total) at area identified in Site Plan #5. End posts shall extend into the woods edge to discourage going around fence for unauthorized access. A double swing gate with a 16 ft. wide opening shall be installed at area identified on Site Plan #5. Approximately 2/10 of an acre of small trees and brush shall be cut to allow for installation of new fence at area identified in Site Plan #5. ALL WORKSITES The contractor shall secure areas under the existing fence which exceed 2 inches in height. See item #13 under Fence Installation for specific details.

2 Fence Specifications Fence Products- 1. Fencing Materials. Posts, gate frames, braced, rails, stretcher bars, truss rods and tension wire shall be of galvanized steel. Gate hardware, post caps, stretcher bar bands, bolts, hardware, and other parts shall be of steel, malleable iron, or ductile iron. All fencing, pipe, fabric, and accessories shall conform to the specifications listed below unless further restricted by this section. Federal Specification RR-F-191K General Specification Federal Specification RR-F-191/1E Fabric Federal Specification RR-F-191/2E Gates Federal Specification RR-F-191/3E Posts, Rails and Braces Federal Specification RR-F-191/4E Accessories 2. Pipe: Dimensions indicated for pipe are outside dimensions (exclusive of coatings). All posts, braces, rails, and gate framing members shall be coated with zinc by the hot-dip process after fabrication. The strip steel used in the manufacture of the pipe shall conform to either ASTM A- 120 (Schedule 40) or ASTM A-569 (SS 40 by Allied Tube and Conduit Corp. or equal). Pipe conforming to ASTM A-120 shall receive not less than 1.8 ounces per square foot of zinc coating. Pipe conforming to ASTM A-569 shall be triple coated with a minimum of 0.9 ounces per square foot of zinc, 15 micrograms per square inch of chromate, and 0.3 mils of polyurethane finish. Pipe shall be straight or have an installed deflection not greater than 1/2" per span or post 3. Fabric: Fabric shall be ASTM A392, Class 1, zinc coated (1.2 ounces), steel wire/fabric, woven in a 2 inch mesh size, 9-gage (0.148 inches) coated wire size, galvanized before weaving. 4. Selvages: Twisted and barbed at top and bottom selvages when barbed wire is used; knuckled at both selvages when barbed wire is not used: unless otherwise indicated. 5. Fabric Size: 8 feet in height and one piece fabric height. 6. Top rail: N/A 7. Bottom rail: : All bottom rails shall be nominal 1-1/4 inch, inch O.D. pipe 8. Line Posts: O.D. steel pipe, 3.65 lbs. per linear ft. 9. Terminal Posts: Angles, corners, ends, and pull posts shall be nominal 2-1/2 inch, O.D. steel pipe for fabric height up to 8 feet and nominal 3-1/2, 4 inch O.D. for fabric height over 8 feet to 16 feet or less. 10. Gate Posts: Swing Gate Posts: Furnish posts for supporting single gate leaf, or one leaf of a double gate installation, for nominal gate widths as follows: Table 1 For Gate Fabric Height Over 6 ft Leaf Width Gate Posts Lbs. Linear Ft Up to and including O.D. Pipe 5.79 Over 6 through O.D. Pipe 9.11 Over 12 through O.D. Pipe Over 18 through O.D. Pipe Post Brace Assembly: Manufacturer s standard adjustable brace at end and gate posts and at both sides of corner and pull posts with horizontal braces located at mid-height of fabric. Use minimum 1.66 O.D. pipe, 2.27 lbs. per linear ft. for brace and truss to line posts with not less than 5/16 diameter rod and adjustable tightener. 12. Tension Wire: 7 gauge, coated coil spring wire, metal and finish to match fabric, top and bottom. 13. Wire Ties: 9 gauge galvanized steel, not aluminum.

3 14. Post Tops: Post tops shall be weather tight closure caps, loop caps, or barb-wire extension arms. Extension arms are to be pressed steel galvanized to accommodate 3 strands of barbed wire, single arm, sloped to 45 degrees. Stretcher Bars: One-piece lengths not less than 2 inches shorter than fabric height with minimum cross-section of 3/16 x ¾. Provide one stretcher bar for each gate and end post and two for each corner and pull post. 15. Bands: Galvanized steel bands for attaching the fabric to terminal posts at intervals not exceeding 15 on center. Tension bands shall be at least inch thick by ¾ wide. Attachment bolts shall be 5/16 x 1 1/4 galvanized carriage bolts with nuts. 16. Barbed Wire: All barbed wire shall consist of two strands of wire with 4 point barbs spaced not more than 5 inches apart. Aluminum coated steel barbed wire (aluminized) which complies with ASTM A585 shall be used throughout the project. 17. Gates: Fabricate perimeter frames of gates from metal and finish to match fence framework. Assemble gate frames by welding. Provide horizontal and vertical members to ensure proper gate operation and attachment of fabric, hardware and accessories. Gate frames shall be made of 1.9 O.D. steel pipe, outer frame with 1.66 O.D. steel pipe, used for internal bracing. Gates shall be covered with fabric. Install fabric with stretcher bars at vertical edges. Attach stretcher bars to gate frame at not more than 15 on center. Hinges shall permit the gates to swing a full 180 degrees or as far as the existing terrain will allow. Install diagonal cross bracing consisting of 5/16 diameter adjustable length truss rods on gates to ensure frame rigidity without sag or twist. Provide gate stops for double gates, set in concrete, and designed to engage center drop rod or plunger bar. Include locking device and padlock eyes as integral part of latch, permitting both gate leaves to be locked with single padlock. A commercial Strong Arm Double Drive Gate Latch that eliminates the need for a drop rod or center stop may also be used. 18. Fence Panel: Fabricate perimeter frames of panels from metal and finish to match fence framework. Provide horizontal and vertical members to ensure rigidity and attachment of fabric. Space frame members a maximum of 8 apart. Panel frames shall be made of a minimum 1.90 inch O.D. hot dipped galvanized pipe weight, 2.72 pounds per linear foot. Panels are to be covered with fabric same as fence. Install fabric with stretcher bars at vertical edges. 19. Clearance: Vertical posts shall not exceed 6 inches open space to the adjacent post. Gates in the closed position shall have vertical clearances not greater than 6 inches and horizontal clearances not greater than 6 inches. Fence Installation- 1. Erection: The fence erection, including all connections, shall be made in accordance with ASTM F 567 Standard Practice for Installation of Chain-Link Fence, unless otherwise indicated. 2. Fabric: Pull fabric taught and tie to posts, rails, and tension wires. Install fabric on security side of fence, and anchor to framework. 3. Terminal Post Bracing: a. No braces are required on fabric 6 ft. high or less where the top rail is specified. On all fabric over 6 ft., braces are required. On fabric over 12 ft. in height, a center rail is required; regardless of height, all fences installed without a top rail shall have braces on all terminals. b. Securely fasten diagonal braces to the terminal post and the adjacent line post or its footing or a footing of equal size. There shall be no more than a 50º angle between the brace and the ground. Securely fasten horizontal braces with truss rods to the adjacent line post and terminal posts. c. When the top rail is used, attach the brace at the halfway point of the terminal post above grade and, when the top rail is omitted, the two-thirds point above grade. 4. Concrete Footings: All posts shall be set in concrete (minimum 2500 psi) foundations to a depth of not less than 36 inches. Concrete foundations shall be circular in horizontal section, not less than 10 inches in diameter for line posts, and with a diameter not less than the outside diameter of the

4 post plus 9 inches for each gate and terminal post. Extend concrete footings 2 inches above grade and crown to shed water. 5. Post Spacing and Setting: All posts shall be spaced in the line of the fence equidistant at intervals not to exceed 10-foot centers for a fence height not exceeding 8 feet and 8-foot centers for a fence height greater than 8 feet not exceeding 16 feet. a. Post Type Line Posts Pull Posts Corner Posts Table 2 Post Spacing and Placement Required Spacing or Placement at most 10 ft. apart up to 8 ft. high fence and 8 ft. apart for fence height greater than 8 ft. at most 500 ft. apart and at each change in direction exceeding 15º vertically at each change in direction exceeding 15º horizontally 6. Tension Wire: Install tension wires before stretching fabric. Fasten fabric to tension wire using hog rings spaced 24 on center. When the top rail is omitted, tension wire shall be installed on the top and bottom of fence. 7. Top Rail: N/A 8. Bottom Rail: See #14 under Fence Installation 9. Tie wires: Tie fabric to line posts, with wire ties spaced 12 on center. Tie fabric to rails and braces, with wire ties spaced 24 on center. 10. Fasteners: Install nuts for tension bands and hardware bolts on side of fence opposite fabric side. All fastening and hinge hardware shall be secured in place by peening or welding to allow proper operation of components, but prevent disassembly of fencing or removal of gates. 11. Barbed Wire: Barbed wire along top of chain link fence shall be evenly spaced on support arms of 12 to 18 lengths and set at 45 degrees from the horizontal. 12. Gates: Install gates plumb, level, and secure for full opening without interference. Install groundset items in concrete for anchorage. Adjust hardware for smooth operation and lubricate where necessary. 13. Clearance: Vertical posts shall not exceed 6 inches open space to the adjacent post. Gates in the closed position shall have vertical clearances not greater than 6 inches and horizontal clearances not greater than 2 inches 14. Drainage Crossings: Where security fences must cross drainage ditches or swales, the main fence may be carried across a ditch or swale with additional fence added below. The fence added below must be attached every 2 inches along the intersection of the two fence sections and attached to a series of ground stakes secured to the sides and bottom of the ditch. Additional Panels at Depressions: Where openings in the fence are greater than 6 inches in height beneath the bottom line of the fence, the contractor shall provide additional panels of fence fabric, barbed wire, bottom rail, or combinations of between line posts, across the opening so no bottom openings exceed 2 inches. If the bottom line of the fence leaves an unfenced opening beneath it of 6 inches or less, the contractor shall install bottom rail between posts and anchor so there shall be no bottom opening at any point along the fence greater than 2 inches in height. These are for areas not considered to be drainage ditches or swales. GENERAL REQUIREMENTS: None Identified

5 SUBMITTALS: None Identified SPECIAL SCHEDULING AND ACCESS: POC is Jay (910) or (910) Call at least one week before starting job. SPECIAL CONDITIONS: None Identified. HAZARDOUS MATERIALS: None Identified ENVIRONMENTAL REQUIREMENTS: 1. There are no known monitoring wells in the area, however, if an unmarked well is discovered and inadvertently damaged, immediately contact EQB at for further direction. 2. If contaminants are suspected through odors or visual inspection, immediately stop work, call 911, Contracting officer, and EMD/RCRS at R UXO Safety Awareness Training is recommended for all construction workers (available through EOD, the OICC, or EMD) as a precaution given that Camp Lejeune has been an active military base since the 1940s. Should munitions-related items be found during construction, follow appropriate notifications as detailed in the 3R training. Any munitions-related item found during project construction should additionally be reported to EMD within 10 days (C. Rycheck, ) to determine if additional evaluation and precautions are necessary(explosives Safety Submission, UXO Tech Support, etc.).