32 31 13.53.pdf

P-719 Wargaming Center eProject No. 1590908 Marine Corps Base, Quantico, VA Issued for Construction

SECTION 32 31 13.53

HIGH-SECURITY FENCES (CHAIN LINK AND ORNAMENTAL) AND GATES

02/20

PART 1 GENERAL

1.1 REFERENCES

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

ASTM INTERNATIONAL (ASTM)

ASTM A116 (2011) Standard Specification for Metallic-Coated, Steel Woven Wire Fence Fabric

ASTM A121 (2013) Standard Specification for Metallic-Coated Carbon Steel Barbed Wire

ASTM A153/A153M (2016) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A392 (2011a; R 2017) Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric

ASTM A780/A780M (2009; R 2015) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

ASTM A824 (2011; R 2017) Standard Specification for Metallic-Coated Steel Marcelled Tension Wire for Use With Chain Link Fence

ASTM B117 (2016) Standard Practice for Operating Salt Spray (Fog) Apparatus

ASTM F567 (2014a) Standard Practice for Installation of Chain Link Fence

ASTM F626 (2014) Standard Specification for Fence Fittings

ASTM D523 (2014; R 2018) Standard Test Method for Specular Gloss

ASTM D714 (2002; R 2017) Standard Test Method for Evaluating Degree of Blistering of Paints

ASTM D822 (2018) Standard Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings

ASTM D1654 (2008; R 2016; E 2017) Standard Test

SECTION 32 31 13.53 Page 1

Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments

ASTM D2244 (2019) Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates

ASTM D2794 (2019) Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)

ASTM D3359 (2017) Standard Test Methods for Rating Adhesion by Tape Test

ASTM F900 (2011; R 2017) Standard Specification for Industrial and Commercial Swing Gates

ASTM F1083 (2018) Standard Specification for Pipe, Steel, Hot-Dipped Zinc Coated (Galvanized) Welded, for Fence Structures

ASTM F1184 (2016) Industrial and Commercial Horizontal Slide Gates

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for [ Contractor Quality Control approval. ][information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section

01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Reinforcement for Ornamental Fencing ; G

Fence Installation Drawings ; G[, [_____]]

SD-03 Product Data

Fabric

Posts

Post Caps

Chain Link Braces

Line Posts

Sleeves

Top Rail

SECTION 32 31 13.53 Page 2

Bottom Rail

Tension Wire

Barbed Wire

Barbed Wire Supporting Arms

Barbed Tape

Latches

Hinges

Stops

Keepers

Rollers

Turnstiles

Padlocks

Wire Ties

Ornamental Fence Systems

Swing Gates

Slide Gates

Fence Fabric Reinforcement

SD-07 Certificates

Chain Link Fence

Fabric

Barbed Wire

Gate Hardware and Accessories

Concrete

Gate Operator

SD-10 Operation and Maintenance Data

SECTION 32 31 13.53 Page 3

Electro-Mechanical Locks

Gate Operator

Operating and maintenance instructions

1.3 CERTIFICATIONS AND SUBMITTALS

The installer shall submit detailed cable reinforcement design calculation drawings to the Architect/Engineer of Record for approval at least three

(3) weeks prior to the start of construction. All plans shall be sealed by a Professional Engineer in the State in which the project is constructed.

1.4 DELIVERY, STORAGE, AND HANDLING

Deliver materials to site in an undamaged condition. Store materials elevated off of the ground to protect against oxidation caused by ground contact.

PART 2 PRODUCTS

2.1 COMPONENTSCHAIN LINK FENCE COMPONENTS

2.1.1 Chain Link Fence Fabric

2.1.1.1 General

Provide [ ASTM A392, [ Class 1 ] [Class 2] , zinc-coated steel wire with minimum coating weight of [1.2][ 2.0 ] ounces of zinc per square foot of coated surface. ] [ ASTM A491, Type I, aluminum-coated steel wire.] [Class 2b polyvinyl chloride-coated steel fabric with 0.3 ounces of zinc coating per square foot in accordance with ASTM F668.] Fabricate fence fabric of 9 gauge wire woven in 2 inch mesh conforming to ASTM A116. [Provide manufacturer's standard [_____] in color for polyvinyl chloride coating for fabric and all other fence components.] [ Provide twisted and barbed fabric on the top selvage and knuckled on the bottom selvage. ]

[ 2.1.1.2 Approval Of Polyvinyl Chloride-Coated Fence Materials

Inspect polyvinyl chloride-coated fence materials for cracking, peeling, and conformance with the specifications prior to installation. Replace any fence materials rejected by the Contracting Officer with approved materials at no additional cost to the Government.

] 2.1.2 Ornamental Fence Systems

Submit manufacturer's catalog data. Provide ASTM F2814 structural components consisting of tubular steel ornamental pickets and rails.

Provide [ ASTM F2408] [ ASTM F2589] industrial class pickets with a minimum cross-sectional area of 1 sq in and a minimum wall thickness of 14 ga1 .

Provide pickets with spear-pointed tips extending a minimum of 6 in above the top rail of the fence. Mount pickets to a top and bottom rail spaced a maximum of 80 in apart. Space pickets along rails with a maximum gap not to exceed 2.25 in . Secure pickets to rails by [welding]

SECTION 32 31 13.53 Page 4

[inaccessible, tamper-proof fasteners]. Provide all items and accessories finished by [painting] [powder-coating] [_______] in [black][dark bronze][white][__________].

[Add the following accessories to further harden the Ornamental Fence System: [barbed wire on top of fence] [barbed wire along bottom of fence] [barbed wire along side of fence] [spiked railing along the top rail] [chain-link security mesh welded to the pickets and rails]. Accessories are specified separately in this section.

2.1.2 Posts

2.1.2.1 Metal Posts for Chain Link Fence

Provide posts conforming to ASTM F1083, zinc-coated. Group IA, with external coating Type A steel pipe. Group IC steel pipe, zinc-coated with external coating Type A or Type B and Group II, roll-formed steel sections, meeting the strength and coating requirements of ASTM F1043 and ASTM A702. Group III, ASTM F1043 steel H-section may be used for line posts in lieu of line post shapes specified for the other classes.

[Provide either Group IA steel pipe posts, Group IC, Group II, roll-formed steel sections, or Group III steel H-sections and be zinc coated (Type A) and polyvinyl chloride coated conforming to the requirements of ASTM F1043.] Provide sizes as shown on the drawings. Provide corner, end and pull posts 2.875 inches outer diameter, minimum. Provide line posts 2.375 inches outer diameter, minimum. Use line posts and terminal (corner, gate, and pull) posts of the same designation throughout the fence. Provide gate post for the gate type specified subject to the limitation specified in ASTM F900 and/or ASTM F1184.

2.1.2.2 Accessories

a. Provide accessories conforming to ASTM F626. Coat ferrous accessories with [ zinc or aluminum coating. ] [polyvinyl chloride-coated, minimum thickness of 0.006 inch , maximum thickness of

0.015 inch . Match color coating of fittings to color coating of the fabric.]

b. Provide truss rods (with turnbuckles or other means of adjustment)for each terminal post.

c. Provide barbed wire supporting arms of the [ single ][ 45 degree outward angle 3-strand ] [V 6 strand] arm type and of the design required for the post furnished. Secure arms by [ top tension wire ][top rail][bolting][riveting] .

d. Furnish post caps in accordance with manufacturer's standard accessories.

e. Provide 9 gauge steel tie wire for attaching fabric to rails, braces, and posts and match the coating of the fence fabric. [Use tie wires for attaching fabric to tension wire on high security fences made from 16 gage stainless steel. Provide double loop tie wires 6.5 inches in length.] Provide miscellaneous hardware coatings which conform to ASTM A153/A153M unless modified.

SECTION 32 31 13.53 Page 5

2.1.3 Chain Link Braces and Rails

ASTM F1083, zinc-coated, Group IA, steel pipe, size NPS 1-1/4. Provide Group IC steel pipe, zinc-coated, that meets the strength and coating requirements of ASTM F1043. [Use braces and rails that are [Group IA] [Group IC], steel pipe, size NPS 1-1/4 or Group II, formed steel sections, size 1-21/32 inch and be zinc coated (Type A) and polyvinyl chloride-coated conforming to the requirements of ASTM F1043.] Group II, formed steel sections, size 1-21/32 inch , conforming to ASTM F1043, may be used as braces and rails if Group II line posts are furnished. ASTM F1083, zinc-coated, Group 1A, steel pipe,size NPS 1-14. Braces [, top rail ][and bottom rail ] ; Class [ 1, steel pipe, Grade [ A] [or] [B]] [2, aluminum pipe] or [3, formed steel sections], in [size [_____]]. [Provide PVC color coating, minimum thickness, 0.10 inch .] [Provide steel pipe, Class 1, Grade B conforming to the following performance criteria when subjected to salt spray testing in accordance with ASTM B117: Exterior [_____] 1,000 hours with maximum 5 percent red rust; Interior [_____] 650 hours with maximum 5 percent red rust.] 1.66" outer diameter, minimum.

2.1.4 Chain Link Gates

2.1.4.1 Gate Assembly

Provide gate assembly conforming to ASTM F900 and/or ASTM F1184 of the type and swing shown manual double swing type . Provide gate frames conforming to strength and coating requirements of ASTM F1083 for Group IA, steel pipe, with external coating Type A, nominal pipe size (NPS) 1-1/2. Provide gate frames conforming to strength and coating requirements of ASTM F1043, for Group IC, steel pipe with external coating Type A or Type B, nominal pipe size (NPS) 1-1/2. [Provide gate frames made of polyvinyl chloride-coated steel pipe (Group IA)(Group IC) with external coating Type A, a nominal pipe size ()NPS) 1-1/2, conforming to ASTM F1043.] Use gate fabric that matches the specified chain link fabric.

2.1.4.2 Gate Leaves

For gate leaves, more than 8 feet wide, provide either intermediate members and diagonal truss rods or tubular members as necessary to provide rigid construction, free from sag or twist. For gate leaves less than 8 feet wide, provide truss rods or intermediate braces. Provide intermediate braces on all gate frames with an electro-mechanical lock.

Attach fabric to the gate frame by method standard with the manufacturer.

Welding is not an acceptable method for attaching fabric to gate frames.

2.1.4.3 Gate Hardware and Accessories

Submit manufacturer's catalog data. Furnish and install latches , hinges , stops , keepers , rollers , and other hardware items as required for the operation of the gate. All items are required to match the material characteristics of the fence system being installed. Arrange latches for padlocking so that the padlock will be accessible from both sides of the gate. Provide stops for holding the gates in the open position. For high security applications, extend each end member of gate frames sufficiently above the top member to carry three strands of barbed wire in horizontal alignment with barbed wire strands on the fence.

SECTION 32 31 13.53 Page 6

2.1.5 Ornamental Fence Gates

2.1.5.1 Swing Gates

Submit manufacturer's catalog data. Fabricate swing gates by welding 2 sq in tubular steel ends and rails. Use pickets that match the adjacent fence construction. Reinforce gates to ensure assembly sags no more than 1% of the gate leaf width or 2 in , whichever is less. Size gate posts to accommodate the weight and width of each gate leaf. Mount gates to posts with weldable steel plates or blocks, pressed steel, or malleable iron hinges. Hot-dip galvanize all hinges with a minimum zinc weight of 1.20 oz/sq ft . Secure all tamper points by welding or peening the threads. Use swing gate latches and drop bar guides manufactured of pressed steel, hot-dipped galvanized with a minimum zinc weight of 1.20 oz/sq ft . Finish all gate hardware in the same color/coating as the fence system.

2.1.5.2 Slide Gates

Submit manufacturer's catalog data. Fabricate slide gates by welding 2 sq in tubular steel ends and rails. Use pickets that match the adjacent fence construction. Select the type and class of slide gate to comply with ASTM F1184. Size gate posts to accommodate the weight and width of each gate leaf in accordance with ASTM F1184, or per manufacturer's recommendations. [Specify Type II, Class 2, interior roller design for cantilever slide gates.]

2.1.6 Turnstiles

Provide [galvanized steel] [metal], three wing turnstile consisting of a rotor, cage, ceiling plate, and bottom bearing plate. [Provide electronic opening and closing [by card key] [_____].] Provide [continuous turn] [one way continuous turn] [one-third turn and stop] motion.

2.1.7 Padlocks

Provide padlocks conforming to ASTM F883, Type [PO1] [_____], Option[s] [A, B, and G] [_____] [and] [_____], Grade [6][_____]. Size 1-3/4 inch .

[Key all padlocks alike]. [Key all padlocks into master key system as specified in Section 08 71 00 DOOR HARDWARE].

2.1.8 Gate Operator

Provide electric gate operators for sliding gates as follows: Provide electric gate operators with a right angle gearhead instantly reversing motor with magnetic drum-type brake, friction disc clutch, reversing starter with thermal overload protection, and a chain-driven geared rotary-type automatic limit switch. Use only hardened steel machine cut worm and mating bronze gears that operate in a bath of oil. Gate operators with V-belt pulleys are not allowed. Equip gate operators with an emergency release to allow the gate to be operated manually that is also capable of being locked in the engaged or disengaged position.

Provide positive stops on the gate tracks as a backup to the limit switches.

2.1.9 Electro-Mechanical Locks

Provide electro-mechanical locking devices for sliding gates and personnel gates that are solenoid actuated such that the deadbolt retracts when the solenoid is energized and remains electrically retracted until the gate is

SECTION 32 31 13.53 Page 7 closed. Provide continuous duty type solenoid, rated for 120V ac, 60Hz operation. Ensure the locking device is unlockable by key and keyed on both sides. Monitor status of the electro-mechanical lock by two limit switches (integral to the locking device) wired in series. Ensure one switch monitors the deadlock lever and the other monitors the locking tongue.

2.2 MATERIALSCHAIN LINK FENCE MATERIALS

2.2.1 Wire

2.2.1.1 Wire Ties

Submit samples as specified. Provide wire ties constructed of the same material as the fencing fabric. [Provide accessories with polyvinyl (PVC) coatings similar to that specified for chain-link fabric or framework.]

2.2.1.2 Barbed Wire

Provide barbed wire conforming to ASTM A121 zinc-coated, Type Z, Class 3, or aluminum-coated, Type A, with 12.5 gauge wire with 14 gauge, round, 4-point barbs spaced no more than 5 inches apart.

2.2.1.3 Tension Wire

Provide Type I or Type II tension wire, Class 4 coating, in accordance with ASTM A824. [ Provide 7 gauge coil spring wire for top wire.]

2.2.2 Barbed Tape

Provide reinforced barbed tape, [double coil] [single coil], for fence toppings fabricated from 430 series stainless steel with a hardness range of Rockwell (30N) 37-45 conforming to the requirements of ASTM A240/A240M .

Provide stainless steel strip 0.025 inch thick by 1 inch wide before fabrication. Provide barbs that are a minimum of 1.2 inch in length, in groups of 4, spaced on 4 inch centers. Use stainless steel core wire with a 0.098 inch diameter and a minimum tensile strength of 140 psi and conforming to ASTM A478. [The above requirements also apply to reinforced barbed tape, single coil, for ground application.] [Fabricate non-reinforced barbed tape, single coil, for ground applications from 301 series stainless steel, with a hardness range of Rockwell (30N) 50-55, in accordance with ASTM A666. Provide stainless steel strips 0.025 inch thick by 1.21 inches wide before fabrication. Use barbs with a minimum of

1.2 inch in length, in groups of 4, spaced on 4 inch centers.] Use No. 16 AWG stainless steel twistable wire ties for attaching the barbed tape to the barbed wire[ and to the fence for ground application].

Ensure long barbed tape obstacles conform to ASTM F1910.

2.2.3 Concrete

ASTM C94/C94M, using 3/4 inch maximum size aggregate, and having minimum compressive strength of 3000 psi at 28 days. Use grout consisting of one part portland cement to three parts clean, well-graded sand and the minimum amount of water to produce a workable mix.

2.3 FENCE FABRIC REINFORCEMENTORNAMENTAL FENCE

Provide galvanized structural wire rope as indicated and in accordance

SECTION 32 31 13.53 Page 8 with ASTM A1023/A1023M , 3/4 inch nominal diameter of strand, 19 wire strand, regular lay, extra improved plow steel (EIPS), independent wire rope core (IWRC) and with a minimum breaking strength of 40,800 pound-force .

Galvanize cable, Class A, in accordance with ASTM A1023/A1023M . The anti-ram cable barrier system shall be tested and certified to meet ASTM F2656, Impact Condition Designation M40, Penetration Rating P2, with capability of stopping a 15,000 lb vehicle traveling at speeds up to 40mph.

The integrated steel ornamental pale high security fence panel shall be a five rail style (total number of rails includes three blank rails for housing anti-ram cabling).

The entire anti-ram barrier system, and all associated panels, I-beam posts, bollards, gates, accessories, fittings, and fasteners shall be obtained from a single source.

2.3.1 Wire Rope Accessories Material

All structural steel members used in cable anchoring system shall be hot-dipped galvanized. Clamps, U-bolts, and associated hardware shall be hot-dipped galvanized in accordance with ASTM A153/A153M . Steel material for cable-supporting framework (i.e., corrugated pales, rails and I-beam posts) shall be galvanized prior to forming and shall conform to the requirements of ASTM A653/A653M, 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.

Steel material for cable-anchoring bollard posts shall conform to the requirements of ASTM A500/A500M, with a minimum yield strength of 46,000 psi (315 MPa).

Material for corrugated pales shall be a nominal 2.75 inch x .75 inch x 14 Ga. The cross-sectional shape of the rails shall be a nominal 2 inch x 2 inch x 11 Ga. Pre-drilled holes in the rail shall be spaced 6 inch on center, providing a pale airspace of no greater than 3.25 inch.

Tamperproof fasteners shall be used to fasten each pale to panel rail at every intersection (cable rails do not require pale to rail fasteners).

Posts shall conform to the manufacturer's I-Beam design with a nominal 3 inch x 2.75 inch x 12 Ga.

The cable material shall be 1-1/4 inch diameter structural wire strand conforming to ASTM A586, Grade 2, Class A coating throughout, with a breaking strength of 159 tons. Cables shall be equipped with threaded studs swaged to a holding strength equivalent to cable breaking strength.

2.3.2 Fabrication

Pales, rails, I-beam posts and bollards shall be pre-cut to specified lengths. Panel rails shall be pre-punched to accept tamperproof security fasteners. I-beam post flange shall be pre-punched to accept rail to post attachment. I-beam 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. Rails shall be attached to post flange providing a bracket-less design at each intermediate post.

The manufactured framework, I-beam posts and bollards shall be subjected to thermal stratification coating process (high-temperature, in-line, SECTION 32 31 13.53 Page 9 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 black. The stratification-coated framework and I-beam posts shall be capable of meeting the performance requirements for each quality characteristic shown in Table 1.

Tabl e 1 Coat i ng Per f or mance Requi r ement s

Qual i t y Char act er i st i cs ASTM Test Met hod Per f or mance Requi r ement s

Adhesion ASTM D3359 Method B Adhesion (Retention of Coating) over 90% of test area (Tape and knife test).

Corrosion Resistance ASTM B117 ASTM D714 &

ASTM 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 ASTM D2794 Impact Resistance over 60 inch lb. (Forward impact using 0.625 ball).

Weathering Resistance ASTM D822 ASTM D2244, ASTM 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).

2.3.3 Turnbuckles

Turnbuckles shall be 1-1/4 inches x 12 inches x inches Type I, Grade 1 galvanized, in accordance with ASTM F1145.

2.3.4 Rope Clamps

Rope clamps shall be hot-dipped galvanized in accordance with

ASTM A153/A153M .

2.3.5 Threaded Rods, U-Bolts, and Bolts

All threaded rods, U-bolts shall conform to ASTM A307 and installed with ASTM F844 and ASTM A563 nuts. The entire bolt assembly shall be galvanized.

SECTION 32 31 13.53 Page 10

2.4 REINFORCEMENT FOR ORNAMENTAL FENCING

Provide galvanized structural wire rope as indicated and in accordance with ASTM A1023/A1023M, 3/4 inch nominal diameter of strand, 19 wire strand, regular lay, extra improved plow steel (EIPS), independent wire rope core (IWRC) and with a minimum breaking strength of 40,800 pound-force.Galvanize cable, Class A, in accordance with ASTM A1023/A1023M.

If one-inch cable is used it shall have a minimum breaking strength of 70,000 pounds. Other components, such as eyebolts, u-bolts, rope clips, thimbles and other associated hardware shall be sized accordingly.

2.4.1 Wire Rope Accessories

All structural steel members used in cable anchoring system shall be hot-dipped galvanized. Clamps, U-bolts, and associated hardware shall be hot-dipped galvanized in accordance with ASTM A153/A153M.

2.4.2 Turnbuckles

Turnbuckles shall be 1-1/4 inches x 12 inches x inches Type I, Grade 1 galvanized, in accordance with ASTM F1145.

2.4.3 Rope Clamps

Rope clamps shall be hot-dipped galvanized in accordance with

ASTM A153/A153M.

2.4.4 Threaded Rods, U-Bolts, and Bolts

All threaded rods, U-bolts shall conform to ASTM A307 and installed with ASTM F844 and ASTM A563 nuts. The entire bolt assembly shall be galvanized.

2.4.5 Concrete Deadman

Concrete deadman shall be designed and spaced to satisfy the requirements for K4 rating design with capability of stopping a 15,000 lb vehicle traveling at speeds up to 40mph. The design submitted by the Installer shall be in accordance with acceptable engineering practice and the project specifications.

2.4.5.1 Soil Properties

The soil anchor parameters to be utilized in the design are as follows:

Soil Unit Weight 120 pcf

Active Soil Pressure 40H psf

Passive Soil Pressure 360H psf

Active Surcharge Coefficient 0.33

Coefficient of Friction (Soil-Concrete) 0.35

SECTION 32 31 13.53 Page 11

Soil Unit Weight 120 pcf

Frost Depth 22 inches

Allowable Net Soil Bearing Capacity 2,000 psf

2.4.5.2 Minimum Dimensions

Minimum dimensions of each concrete deadman shall be 3 feet-0 inch x 3 feet-0 inch x 1 foot-6 inch. Provide a minimum of 3 feet ground cover.

2.4.6 Design Submittal

The installer shall submit two (2) sets of Cable Reinforcement Design Calculations to include detailed design calculations and construction drawings for approval at least three (3) weeks prior to the beginning of construction. All computer-generated calculations and drawings shall be prepared and sealed by a Professional Engineer.

2.5 PADLOCKS

Provide padlocks conforming to ASTM F883, Type PO1, Option A, B, and G and, Grade 6. Size 1-3/4 inch. Key all padlocks into master key system as specified in Section 08 71 00 DOOR HARDWARE.

2.6 CONCRETE

All concrete work shall be in accordance with ACI 318, latest edition, and having minimum compressive strength of 4000 psi at 28 days. Use grout consisting of one part portland cement to three parts clean, well-graded sand and the minimum amount of water to produce a workable mix.

] PART 3 EXECUTION

3.1 PREPARATION

Perform complete installation conforming to ASTM F567.

3.1.1 Line and Grade

Install fence to the lines and grades indicated. Clear the area on either side of the fence line to the extent indicated. Space line posts equidistant at intervals not exceeding 10 feet . Set terminal (corner, gate, and pull) posts whenever abrupt changes in vertical and horizontal alignment are encountered. Provide continuous fabric between terminal posts; however, ensure runs between terminal posts do not exceed 500 feet .

Repair any damage to galvanized surfaces, including welding, with paint containing zinc dust in accordance with ASTM A780/A780M .

3.1.2 Excavation

Excavate holes to depths indicated. Clear all post holes of loose material and spread waste material where directed. Eliminate ground surface irregularities along the fence line to the extent necessary to maintain a [1] [ 2] inch clearance between the bottom of the fabric and finish grade.

SECTION 32 31 13.53 Page 12

3.2 INSTALLATION

3.2.1 Installation Drawings

Submit complete Fence Installation Drawings for review and approval by the Contracting Officer prior to shipment. Submit drawing details that include, but are not limited to the following information: Fence Installation Drawings, Location of gate, corner, end, and pull posts, and Gate Assembly , Turnstiles, and Gate Hardware and Accessories . Install fence system per approved drawings.

3.2.2 Security Fencing

Install new security fencing, remove existing security fencing, and perform related work to provide continuous security for facility.

Schedule and fully coordinate work with Contracting Officer.

3.2.3 Posts

3.2.3.1 Earth and Bedrock

a. Set posts plumb and in alignment. Except where solid rock is encountered, set posts in concrete to the depth indicated on the drawings. Where solid rock is encountered with no overburden, set posts to a minimum depth of 18 inches in rock. Where solid rock is covered with an overburden of soil or loose rock, set posts to the minimum depth indicated on the drawing unless a penetration of 18 inches in solid rock is achieved before reaching the indicated depth, in which case terminate depth of penetration. Grout all portions of posts set in rock.

b. Set portions of posts not set in rock in concrete from the rock to ground level. Set posts in holes not less than the diameter shown on the drawings. Make diameters of holes in solid rock at least 1 inch greater than the largest cross section of the post. Thoroughly consolidate concrete and grout around each post, free of voids and finished to form a dome. Allow concrete and grout to cure for 72 hours prior to attachment of any item to the posts. Group II line posts may be mechanically driven, for temporary fence construction only, if rock is not encountered. Set driven posts to a minimum depth of 3 feet and protect with drive caps when setting.

c. Test fence post rigidity by applying a 50 pound force on the post, perpendicular to the fabric, at 5 feet above ground. Ensure post movement measured at the point where the force is applied is less than or equal to 3/4 inch from the relaxed position. Test every tenth post for rigidity. When a post fails this test, make further tests on the next four posts on either side of the failed post. Remove, replace, and retest all failed parts at the Contractor's expense.

[ 3.2.3.2 Concrete Slabs and Walls

When installed in concrete slabs or walls, set posts in zinc-coated sleeves , to a minimum depth of 12 inches . Fill sleeve joint with lead, nonshrink grout, or other approved material. Set posts for support of removable fence sections in sleeves that provide a tight sliding joint and hold posts aligned and plumb without use of lead or setting material.

SECTION 32 31 13.53 Page 13

] 3.2.4 ORNAMENTAL FENCE INSTALLATION MAINTENANCE

When cutting/drilling fence system components 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 above will negate warranty. 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-manufacturer approved parts or components will negate the manufactures’ warranty.

3.2.5 Rails

Bolt bottom rail to double rail ends and securely fasten double rail ends to the posts. Peen bolts to prevent easy removal. Install bottom rail before chain link fabric. [Provide 3/8" diameter eye hook anchored into concrete footing at midpoint.]

3.2.5 Fabric

a. Set fabric height [ at [ 6][ 7] feet ] [_____] [as shown] .

b. Install chain link fabric on the opposite side of the post of the area being secured indicated . Attach fabric to terminal posts with stretcher bars and tension bands. Space bands at approximately 15 inch intervals. Install fabric and pull taut to provide a smooth and uniform appearance free from sag, without permanently distorting the fabric diamond or reducing the fabric height. Fasten fabric to line posts at approximately 15 inch intervals and fastened to all rails and tension wires at approximately [24][ 12] inch intervals.

c. Cut fabric by untwisting and removing pickets. Accomplish splicing by weaving a single picket into the ends of the rolls to be joined.

Install the bottom of the fabric [ 2][1] plus or minus 1/2 inch above the ground.

d. After the fabric installation is complete, exercise the fabric by applying a 50 pound push-pull force at the center of the fabric between posts; use a 30 pound pull at the center of the panel to ensure fabric deflection of not more than 2.5 inches when pulling fabric from the post side of the fence. Every second fence panel is required to meet this requirement. Resecure and retest all failed panels at the Contractor's expense.

3.2.6 Supporting Arms

Install barbed wire supporting arms and barbed wire as indicated on the drawings and as recommended by the manufacturer. Anchor supporting arms [ to the posts in a manner to prevent easy removal with hand tools ] [with 3/8 inch diameter plain pin rivets or, at the Contractor's option, with studs driven by low-velocity explosive-actuated tools for steel, wrought iron, ductile iron, or malleable iron. Do not use explosive-actuated tool to drive studs into gray iron or other material that can be fractured.

Use a minimum of two studs per support arm.] . Pull barbed wire taut and attach to the arms with clips or other means that will prevent easy removal.

SECTION 32 31 13.53 Page 14

[ 3.2.7 Barbed Tape Installation

Install stainless steel reinforced barbed tape per ASTM F1911 and as detailed on the drawings. Stretch out barbed tape to its manufacturer's recommended length, set on top of the barbed wire and "V" shaped support arms, then secure it to the barbed wire. Secure the barbed tape to the barbed wire at the two points and at every spiral turn of both coils as shown on the drawings. Install stainless steel [reinforced][non-reinforced] barbed tape for ground applications [in accordance with manufacturer's recommendations][as shown on the drawings].

] 3.2.7 Gate Installation

a. Install gates at the locations shown. Mount gates to swing as indicated inward . Install latches, stops, and keepers as required.

Install [Slide] [Lift] gates as recommended by the manufacturer.

b. Attach padlocks to gates or gate posts with chains. Weld or otherwise secure hinge pins, and hardware assembly to prevent removal.

c. Submit [ 6][_____] copies of operating and maintenance instructions .

Outline the step-by-step procedures required for system startup, operation, and shutdown. Include the manufacturer's name, model number, service manual, parts list, and brief description of all equipment and their basic operating features. Include in the maintenance instructions routine maintenance procedures, possible breakdowns and repairs, and troubleshooting guide. Also include the general gate layout, equipment layout and simplified wiring and control diagrams of the system as installed.

3.2.8 Grounding

a. Ground fencing as [ indicated on drawings ][ and ][ specified ] .

b. [Ground fences crossed by overhead powerlines in excess of 600 volts and ground all electrical equipment attached to the fence.]

c. [Ground fences on each side of all gates, at each corner, at the closest approach to each building located within 50 feet of the fence, and where the fence alignment changes more than 15 degrees. Ensure grounding locations are located no more than 650 feet apart. Bond each gate panel with a flexible bond strap to its gate post. Ground fences crossed by powerlines of 600 volts or more at or near the point of crossing and at distances not exceeding 150 feet on each side of crossing.]

d. [Provide ground conductor consisting of No. 8 AWG solid copper wire.

Use grounding electrodes that measures 3/4 inch by 10 foot long and are a copper-clad steel rod. Drive electrodes into the earth so that the top of the electrode is at least 6 inches below the grade. Where driving is impracticable, bury electrodes a minimum of 12 inches deep and radially from the fence. Install the top of the electrode to be less than 2 feet or more than 8 feet from the fence. Clamp ground conductor to the fence and electrodes with bronze grounding clamps to create electrical continuity between fence posts, fence fabric, and ground rods. Measure total resistance of the fence to ground and ensure it is not greater than 25 ohms.]

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[ 3.2.9 Cable Reinforcement Installation

Comply with the contract drawings. Install [1][2][___] strands of three strands of 3/4 inch cables or two strands of one-inch [3/4][1] in steel aircraft cables mounted to the [chain link fence] [ ornamental fence system ] posts utilizing u-bolts and nuts. Peen the ends of the U-bolts to prevent removal. Tighten cables with galvanized steel turnbuckles with swaged fittings to the point there is no visible sag. Install [3 ft x 3 ft x 1.5 ft][4ft x 4 ft x 2ft][__________] concrete deadman anchors , size as determined by Cable Reinforcement Design, which are a minimum of [ 3][4] [___] ft underground and installed in undisturbed surrounding soils.

Space dead man anchors no more than 200 ft apart and on each side of gate openings. Connect steel aircraft cables to dead man anchors using swaged end fittings and turnbuckles attached to 1.25 in galvanized threaded rod which is embedded into concrete anchor and held in place with two 4 in x 4 in x ¼ in thick steel plates welded to the threaded rod. Dimensions of rods and steel plates shall be in conformance with Cable Reinforcement design. Place deadman anchors within 10 feet of last post and on each side of gate openings.

] 3.3 CLOSEOUT ACTIVITIES

3.3.1 Cleanup

Remove waste fencing materials and other debris from the work site each workday.

-- End of Section --

SECTION 32 31 13.53 Page 16

2.4.6 Design Submittal