EXISTING 323119 - Decorative Metal Fences _ Gates.pdf

A. General: This work consists of all labor, materials, and equipment necessary for furnishing and installing decorative metal fence, gates, operators and accessories in conformance with the lines, grades, and details as shown.

B. Sustainable Design Requirements: Provide the Work and submit documentation necessary for compliance with sustainable requirements specified in Section

01 81 11, SUSTAINABLE DESIGN REQUIREMENTS.

A. Grounding of fencing for enclosures of electrical equipment and for lightning protection as shown: Section 26 05 26, GROUNDING AND

BONDING FOR ELECTRICAL SYSTEMS.

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

REQUIREMENTS.

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

D. Guard Booths: Section 13 34 19, METAL BUILDING SYSTEMS

E. Card readers and biometric devices: Section 28 13 11, PHYSICAL ACCESS

CONTROL SYSTEMS

F. Intrusion alarm: Section 28 16 11, INTRUSION DETECTION SYSTEM

G. Crash rated barriers: Section 34 75 13.13, ACTIVE VEHICLE BARRIERS.

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

A. Manufacturer’s Literature and Data: For each type of product indicated.

B. Manufacturer’s Certificates:

1. Zinc coating complies with complies with specifications.

2. Gate is manufactured in compliance with ASTM F2200, Standard Specification for Automated Vehicular Gate Construction and the operators are UL 325 listed.

C. Shop Drawings: For gates include plans, elevations, sections, details, and attachments to other work.

Emeka.Nwabunwanne Text Box Refer to RFI #9338, 9338a & 9338b for changes made to the SITE sidewalk, aggregate pathways and planting scope.

D. Certification: That fence alignment meets requirements of contract documents.

E. Maintenance Data: For gate operators to include in maintenance manuals.

F. Sustainable Design Submittals: Submit the necessary documentation to verify compliance with requirements specified in Section 01 81 11, SUSTAINABLE

DESIGN REQUIREMENTS.

A. Installer Qualifications: Fabricator of products.

B. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M, ”Structural Welding Code - Steel.”

C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

D. Emergency Access Requirements: Comply with requirements of authorities having jurisdiction for automatic gate operators on gates that must provide emergency access.

E. Mockups: Build mockups to verify selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for fabrication and installation.

1. Include 10’ (3m) length of fence complying with requirements.

2. Approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

A. General: Provide alloys and tempers with not less than the strength and durability properties of alloy and temper designated in paragraphs below for each aluminum form required.

B. Extrusions: ASTM B 221/ASTM B 221M, Alloy 6063-T5.

C. Tubing: ASTM B 429, Alloy 6063-T6.

D. Plate and Sheet: ASTM B 209/ASTM B 209M, Alloy 6061-T6.

E. Die and Hand Forgings: ASTM B 247/ASTM B 247M, Alloy 6061-T6.

F. Castings: ASTM B 26/B 26M, Alloy A356.0-T6.

A. Plates, Shapes, and Bars: ASTM A 36/A 36M.

B. Pickets: Hot-rolled, carbon steel complying with ASTM A 29/A 29M, Grade 1010.

C. Tubing: ASTM A 500, cold formed steel tubing.

D. Uncoated Steel Sheet: Hot-rolled steel sheet, ASTM A 1011/A 1011M, Structural Steel, Grade 45 (Grade 310) or cold-rolled steel sheet, ASTM A 1008/A 1008M, Structural Steel, Grade 50 (Grade 340).

A. Decorative Metallic Coated Steel Picket Fences: Comply with ASTM F 2408, for industrial application (class) unless otherwise indicated.

B. Posts:

1. Fence Posts: Steel bar with baseplate, size and configuration as indicated, hot-dip galvanized after fabrication.

2. Swing Gate Posts: Rectangular steel tubing, size and thickness indicated with base plates, hot-dip galvanized.

3. Horizontal-Slide Gate Post, Openings up to 12 Feet (3.7) m: Square steel tubing 3 by 3” (76 by 76 mm) with 3/16” (4.76 mm) wall thickness, hot-dip galvanized.

4. Horizontal-Slide Gate Post, Openings Wider Than 12 Feet (3.7 m):

Square steel tubing 4 by 4” (102 by 102 mm) with 3/16” (4.76 mm) wall thickness, hot-dip galvanized.

5. Guide Posts for Class 1 Horizontal-Slide Gates: Square steel tubing 4 by 4” (102 by 102 mm) with 3/16” (4.76 mm) wall thickness, hot-dip galvanized; installed adjacent to gate post to permit gate to slide in space between.

C. Rails: Steel bars size as indicated, hot-dip galvanized after fabrication.

D. Pickets: Rectangular tubes, hot-dip galvanized after fabrication.

E. Fasteners: Stainless steel color-coated fasteners matching fence components.

F. Galvanizing: For components indicated to be galvanized and for which galvanized coating is not specified in ASTM F 2408, hot-dip galvanize to comply with ASTM A 123/A 123M. For hardware items, hot-dip galvanize to comply with ASTM A 153/A 153M.

G. Finish: Organic coating complying with requirements in ASTM F 2408.

A. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded.

B. Concrete: Normal-weight, air-entrained, ready-mix concrete complying with requirements in Section 033000 ”Cast-in-Place Concrete” with a minimum 28-day compressive strength of 3000 psi (20 MPa), 3” (75 mm) slump, and 1” (25 mm) maximum aggregate size.

C. Nonshrink Grout: Factory-packaged, nonstaining, noncorrosive, nongaseous grout complying with ASTM C 1107 and specifically recommended by manufacturer for exterior applications.

A. General: Gate configuration, frame height and opening width as indicated on Drawings.

B. Additional Rails: Provide as indicated, complying with requirements for fence rails.

C. Picket Size, Configuration, and Spacing: Comply with requirements for adjacent fence.

D. Hardware: Latches permitting operation from both sides of gate, hinges, and keepers for each gate leaf more than 5 feet (1.52 m) wide. Provide center gate stops and cane bolts for pairs of gates.

E. Hinges: BHMA A156.1, Grade 1, suitable for exterior use.

F. Exit Hardware: BHMA A156.3, Grade 1, Type 1 (rim exit device), with push pad actuating bar, suitable for exterior use.

G. Finish of Exposed Welds: Comply with NOMMA Guideline 1, Finish #2 -completely sanded joint, some undercutting and pinholes okay.

H. Galvanizing: For items other than hardware that are indicated to be galvanized, hot-dip galvanize to comply with ASTM A 123/A 123M unless otherwise indicated. For hardware items, hot-dip galvanize to comply with

ASTM A 153/A 153M.

I. Steel Finish: High-performance coating.

A. General : Gate configuration, frame height, and opening width as indicated on Drawings. Gate panel and operator have been tested as a system for 200,000 cycles.

1. Type: Cantilever slide, with internal roller assemblies.

B. Gate Frames: Fabricate from 6063-T6 aluminum alloy extrusions. Top member shall be a 3” x 5” (76mm x 127mm) aluminum structural channel/tube extrusion weighing not less than 2.6 lb/lf (3.8kg/m) for External Picket designs. Frame member shall be ”keyed” to interlock with the “keyed” track member. Fabricate single horizontal bottom member using a 2” x 5” (51mm x 127mm) aluminum structural tube weighing not less than 2.0 lb/lf (2.9kg/m). Fabricate two horizontal bottom member using a 5” (127mm) aluminum structural channel weighing not less than 2.6 lb/lf (3.8kg/m).

C. Gate Track: The gate shall have a separate semi-enclosed “keyed” track, extruded from 6005A-T61 or 6105−T5 aluminum alloy, weighing not less than

2.9 lb/lf (4.2kg/m). Locate track members on each side of the top member.

Interlocked and weld to the “keyed” top member, to form a composite structure with the top of the gate frame.

D. Gate Mounting:

1. Gate Frame: Supported from track by four (4) swivel type, self-aligning, 4−wheeled, sealed lubricant, ball-bearing truck assemblies.

2. Support Post: The bottom of each shall have a bracket with a pair of 3” (76mm) UHMW guide wheels. Provide wheel cover protectors with bottom guides to comply with UL325.

3. Gap Protectors: Provide complying with ASTM F 2200-05.

E. Diagonal Bracing: Provide entire gate frame with “X” bracing of 3/16” (5mm) minimum diameter stainless steel aircraft cable.

F. Ornamental Picket: Fill the length of frame with pickets to match adjacent fence.

G. Posts: Double sets of support posts shall be minimum 4” x 4” x 3/16” wall square steel tubing, Grade 500. Hot-dip galvanize frames after fabrication.

H. Gate Lock: Furnish with an electro-mechanical lock. Provide lock with status indicator and six tumbler mechanical lock. All gates keyed alike as directed by Resident Engineer.

I. Galvanizing: For items other than hardware that are indicated to be galvanized, hot-dip galvanize to comply with ASTM A 123/A 123M unless otherwise indicated. For hardware items, hot-dip galvanize to comply with

A. General : Gate configuration, frame height, and opening width as indicated on Drawings. Gate panel and operator have been tested as a system for 200,000 cycles.

1. Type: Overhead slide.

B. Gate Frames: Fabricate from 6063-T6 aluminum alloy extrusions. Top member shall be a 3” x 5” (76mm x 127mm) aluminum structural channel/tube extrusion weighing not less than 3.0 lb/lf (4.3 kg/m). Frame member shall be ”keyed” to interlock with the “keyed” track member. Fabricate single horizontal bottom member using a 2” x 5” (51mm x 127mm) aluminum structural tube weighing not less than 2.0 lb/lf (2.9kg/m).

C. Gate Track: Separate semi-enclosed overhead track, extruded from 6005A-T61 or 6105−T5 aluminum alloy, weighing not less than 2.7 lb/lf (3.9 kg/m).

Aluminum overhead track shall be bolted to the overhead aluminum angle or “W” beam by means of 1/2” (13 mm) diameter bolts at intervals not exceeding two ft.

D. Gate Mounting:

1. Gate Frame: Supported from overhead track by a minimum of two swivel type, self-aligning, 4−wheeled, sealed lubricant, ball-bearing truck assemblies.

2. Support Post: The bottom of each shall have a bracket with a 3” (76mm) UHMW guide wheels. Provide wheel cover protectors with bottom guides to comply with UL325.

3. Intermediate Posts: Provide at each post a pair of 3” (76mm) UHMW intermediate bottom guide wheels.

E. Posts: Three sets of support posts shall be minimum 4” (102 mm) diameter steel separated for sliding gate.

F. Diagonal Bracing: Provide entire gate frame with “X” bracing of 3/16” (5mm) minimum diameter stainless steel aircraft cable.

G. Gate Filler: Fill the length of frame with MTL 53 refer to Section 055000, METAL FABRICATIONS.

H. Gate Lock: Furnish with an electro-mechanical lock. Provide lock with status indicator and six tumbler mechanical lock. All gates keyed alike as directed by Resident Engineer.

I. Galvanizing: For items other than hardware that are indicated to be galvanized, hot-dip galvanize to comply with ASTM A 123/A 123M unless otherwise

A. General: Provide factory-assembled automatic operating system designed for gate size, type, weight, and operation frequency. Provide operation control system with characteristics suitable for Project conditions, with remote-control stations, safety devices, and weatherproof enclosures; coordinate electrical requirements with building electrical system.

1. Provide operator designed so motor may be removed without disturbing limit-switch adjustment and without affecting auxiliary emergency operator.

2. Provide gate operators that comply with UL 325.

3. Provide electronic components with built-in troubleshooting diagnostic feature.

4. Provide unit designed and wired for both right-hand/left-hand opening, permitting universal installation.

5. Provide controllers, electrical devices, and wiring.

B. Gate Operators: Concrete base mounted.

C. Motors: Comply with NEMA designation, temperature rating, service factor, enclosure type, and efficiency requirements for motors.

1. Controllers, Electrical Devices, and Wiring: Comply with requirements for electrical devices and connections.

2. Water Resistant Motor Box: Constructed of 10-gauge sheet steel, hot-dip galvanized complying with ASTM A 123, gasketed and located at ground level for easy maintenance. Security hinges with tamper resistant screws shall be furnished to secure operator enclosure components.

D. Gear (Box) Reducer: Self enclosed gear-head gearbox manufactured as a single unit, consisting of a hardened steel, machine cut worm and mating bronze gear running in oil bath. Gearbox to include the following functions, adjustable clutching device, and manual disconnect by crank handle.

E. Gear Box Heater: Operator shall include internal gearbox heater and a heater strip for the control box.

F. Manual Operation: A crank handle, located at ground level in the motor box, shall provide a two-step emergency procedure for manual operation:

1. Unlock and open motor-box door.

2. Fold out handle and crank gate opened or closed.

G. Limits: Equip operator with an integral limit system, providing accurate settings to control the open and close positions of the gate, and shall not be affected by manual operation or motor removal.

A. Galvanizing: Complete the shop fabrication prior to application of the zinc coating. Remove mill scale and rust, clean and pickle the units as required for proper pretreatment of the surfaces. Provide hot−dip galvanizing in accordance with requirements of ASTM A123/A123M for steel fabrications, members, bars, plates and strip greater than 1/8” [3 mm] thickness, and assembled steel products.

Provide hot−dip galvanizing in accordance with requirements of ASTM A153/A153M for iron and steel bolts, nuts and washers, and hardware components. Safeguard against steel embrittlement in conformance with ASTM A143. Handle the materials in a manner to avoid mechanical damage and distortion. Comply with ASTM A384 and ASTM A385 to prevent warpage and to provide high quality zinc coating on assemblies.

B. High-Performance Coating: Apply wash primer, and polyurethane topcoat to prepared surfaces. Comply with coating manufacturer’s written instructions and with requirements in SSPC-PA 1, ”Paint Application Specification No. 1: Shop, Field, and Maintenance Painting of Steel,” for shop painting. Apply at spreading rates recommended by coating manufacturer.

1. Color and Finish: Section 09 06 00, SCHEDULE FOR FINISHES.

A. Install fence by properly trained crew, on previously prepared surfaces, to line and grade as shown. Install fence in accordance with ASTM F567 and 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, chain links and accessories.

B. A Registered Professional Land Surveyor or Registered Civil Engineer specified in Section 01 00 00, GENERAL REQUIREMENTS, shall stake out and certify the fence alignment to meet the requirements as shown.

A. 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 450 mm (18”) into the bedrock, whichever is less, and provide a minimum of 50 mm (2”) 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.

A. Install gates according to manufacturer’s written instructions, level, plumb, and secure for full opening without interference. 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.

A. General: Install gate operators according to manufacturer’s written instructions, aligned and true to fence line and grade.

B. Excavation for Concrete Bases: Excavate holes for bases, in firm, undisturbed soil to dimensions and depths and at locations as required by gate operator component manufacturer’s written instructions and as indicated.

C. Concrete Bases: Cast-in-place or precast concrete, depth as indicated on Drawings, dimensioned and reinforced according to gate operator component manufacturer’s written instructions and as indicated on Drawings.

D. Vehicle Loop Detector System: Cut grooves in pavement and bury and seal wire loop according to manufacturer’s written instructions. Connect to equipment operated by detector.

E. Comply with NFPA 70 and manufacturer’s written instructions for grounding of electric-powered motors, controls, and other devices.

A. 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.

B. Automatic Gate Operators: Energize circuits to electrical equipment and devices.

Adjust operators, controls, safety devices, alarms, and limit switches.

1. Hydraulic Operators: Purge operating system, adjust pressure and fluid levels, and check for leaks.

2. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.

3. Test and adjust controls, alarms, and safeties. Replace damaged and malfunctioning controls and equipment.

C. Lubricate hardware, gate operators, and other moving parts.

A. General: This work consists of all labor, materials, and equipment necessary for furnishing and installing decotative metal fence, gates, operators and accessories in conformance with the lines, grades, and details as shown.

A. Grounding of fencing for enclosures of electrical equipment and for lightning protection as shown: Section 26 05 26, GROUNDING AND

BONDING FOR ELECTRICAL SYSTEMS.

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

REQUIREMENTS.

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

D. Guard Booths: Section 13 34 19, METAL BUILDING SYSTEMS

E. Card readers and biometric devices: Section 28 13 11, PHYSICAL ACCESS

CONTROL SYSTEMS

F. Intrusion alarm: Section 28 16 11, INTRUSION DETECTION SYSTEM

G. Crash rated barriers: Section 34 75 13.13, ACTIVE VEHICLE BARRIERS.

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

A. Manufacturer’s Literature and Data: For each type of product indicated.

B. Manufacturer’s Certificates:

1. Zinc coating complies with complies with specifications.

2. Gate is manufactured in compliance with ASTM F2200, Standard Specification for Automated Vehicular Gate Construction and the operators are UL 325 listed.

C. Shop Drawings: For gates include plans, elevations, sections, details, and attachments to other work.

REVISED

D. Certification: That fence alignment meets requirements of contract documents.

E. Maintenance Data: For gate operators to include in maintenance manuals.

A. Installer Qualifications: Fabricator of products.

B. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M, ”Structural Welding Code - Steel.”

C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

D. Emergency Access Requirements: Comply with requirements of authorities having jurisdiction for automatic gate operators on gates that must provide emergency access.

E. Mockups: Build mockups to verify selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for fabrication and installation.

1. Include 10’ (3m) length of fence complying with requirements.

2. Approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

A. General: Provide alloys and tempers with not less than the strength and durability properties of alloy and temper designated in paragraphs below for each aluminum form required.

B. Extrusions: ASTM B 221/ASTM B 221M, Alloy 6063-T5.

C. Tubing: ASTM B 429, Alloy 6063-T6.

D. Plate and Sheet: ASTM B 209/ASTM B 209M, Alloy 6061-T6.

E. Die and Hand Forgings: ASTM B 247/ASTM B 247M, Alloy 6061-T6.

F. Castings: ASTM B 26/B 26M, Alloy A356.0-T6.

A. Plates, Shapes, and Bars: ASTM A 36/A 36M.

B. Pickets: Hot-rolled, carbon steel complying with ASTM A 29/A 29M, Grade 1010.

C. Tubing: ASTM A 500, cold formed steel tubing.

D. Uncoated Steel Sheet: Hot-rolled steel sheet, ASTM A 1011/A 1011M, Structural Steel, Grade 45 (Grade 310) or cold-rolled steel sheet, ASTM A 1008/A 1008M, Structural Steel, Grade 50 (Grade 340).

A. Decorative Metallic Coated Steel Tubular Picket Fences: Comply with ASTM F 2408, for industrial application (class) unless otherwise indicated.

B. Posts:

1. End and Corner Posts: Square tubes 3” by 3” (76 by 76 mm) formed from 0.108” (2.74 mm) nominal thickness, metallic-coated steel sheet or formed from 0.105” (2.66 mm) nominal thickness steel sheet and hot-dip galvanized after fabrication.

2. Swing Gate Posts: Square steel tubing 4 by 4” (102 by 102 mm) with 3/16” (4.76 mm) wall thickness, hot-dip galvanized.

3. Horizontal-Slide Gate Post, Openings up to 12 Feet (3.7) m: Square steel tubing 3 by 3” (76 by 76 mm) with 3/16” (4.76 mm) wall thickness, hot-dip galvanized.

4. Horizontal-Slide Gate Post, Openings Wider Than 12 Feet (3.7 m):

Square steel tubing 4 by 4” (102 by 102 mm) with 3/16” (4.76 mm) wall thickness, hot-dip galvanized.

5. Guide Posts for Class 1 Horizontal-Slide Gates: Square steel tubing 4 by 4” (102 by 102 mm) with 3/16” (4.76 mm) wall thickness, hot-dip galvanized; installed adjacent to gate post to permit gate to slide in space between.

C. Post Caps: Formed from steel sheet and hot-dip galvanized after forming.

D. Rails: Square tubes or double-wall channels as indicated.

1. Size: As indicated.

2. Metal and Thickness: 0.079” (2.01 mm) nominal-thickness, metallic-coated steel sheet or 0.075” (1.90 mm) nominal-thickness, uncoated steel sheet, hot-dip galvanized after fabrication.

E. Pickets: Square tubes.

F. Fasteners: Stainless steel color-coated fasteners matching fence components.

G. Galvanizing: For components indicated to be galvanized and for which galvanized coating is not specified in ASTM F 2408, hot-dip galvanize to comply with ASTM A 123/A 123M. For hardware items, hot-dip galvanize to comply with ASTM A 153/A 153M.

H. Finish: Organic coating complying with requirements in ASTM F 2408.

A. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded.

B. Concrete: Normal-weight, air-entrained, ready-mix concrete complying with requirements in Section 033000 ”Cast-in-Place Concrete” with a minimum

28-day compressive strength of 3000 psi (20 MPa), 3” (75 mm) slump, and 1” (25 mm) maximum aggregate size.

C. Nonshrink Grout: Factory-packaged, nonstaining, noncorrosive, nongaseous grout complying with ASTM C 1107 and specifically recommended by manufacturer for exterior applications.

A. General: Gate configuration, frame height and opening width as indicated on Drwings.

B. Steel Frames and Bracing: Fabricate members from square steel tubing [1-1/2 by 1-1/2” (38 by 38 mm)] [2 by 2” (50 by 50 mm)] [2-1/2 by 2-1/2” (64 by 64 mm)] <Insert size> with [1/8” (3.2 mm)] <Insert thickness> wall thickness.[$ds~Hot-dip galvanize frames after fabrication.]

C. Frame Corner Construction: Welded with corner fittings and 5/16”- (7.9 mm-) diameter, adjustable truss rods for panels 5 feet (1.52 m) wide or wider].

D. Additional Rails: Provide as indicated, complying with requirements for fence rails.

E. Picket Size, Configuration, and Spacing: Comply with requirements for adjacent fence.

F. Hardware: Latches permitting operation from both sides of gate, hinges, and keepers for each gate leaf more than 5 feet (1.52 m) wide. Provide center gate stops and cane bolts for pairs of gates.

G. Hinges: BHMA A156.1, Grade 1, suitable for exterior use.

H. Exit Hardware: BHMA A156.3, Grade 1, Type 1 (rim exit device), with push pad actuating bar, suitable for exterior use.

I. Finish of Exposed Welds: Comply with NOMMA Guideline 1, Finish #2 -completely sanded joint, some undercutting and pinholes okay.

J. Galvanizing: For items other than hardware that are indicated to be galvanized, hot-dip galvanize to comply with ASTM A 123/A 123M unless otherwise indicated. For hardware items, hot-dip galvanize to comply with

K. Steel Finish: High-performance coating.

A. General : Gate configuration, frame height, and oepening width as indicated on Drawings. Gate panel and operator have been tested as a system for 200,000 cycles.

1. Type: Overhead slide.

2. Type: Cantilever slide, with [external] [internal] roller assemblies.

B. Gate Frames: Fabricate from 6063-T6 aluminum alloy extrusions. Top member shall be a 3” x 5” (76mm x 127mm) aluminum structural channel/tube extrusion weighing not less than 2.6 lb/lf (3.8kg/m) for External Picket designs. Frame member shall be ”keyed” to interlock with the “keyed” track member. Fabricate single horizontal bottom member using a 2” x 5” (51mm x 127mm) aluminum structural tube weighing not less than 2.0 lb/lf (2.9kg/m). Fabricate two horizontal bottom member using a 5” (127mm) aluminum structural channel weighing not less than 2.6 lb/lf (3.8kg/m).

C. Gate Track: The gate shall have a separate semi-enclosed “keyed” track, extruded from 6005A-T61 or 6105−T5 aluminum alloy, weighing not less than

2.9 lb/lf (4.2kg/m). Locate track members on each side of the top member.

Interlocked and weld to the “keyed” top member, to form a composite structure with the top of the gate frame.

D. Gate Mounting:

1. Gate Frame: Supported from track by four (4) swivel type, self-aligning, 4−wheeled, sealed lubricant, ball-bearing truck assemblies.

2. Support Post: The bottom of each shall have a bracket with a pair of 3” (76mm) UHMW guide wheels. Provide wheel cover protectors with bottom guides to comply with UL325.

3. Gap Protectors: Provide complying with ASTM F 2200-05.

E. Diagonal Bracing: Provide entire gate frame with “X” bracing of 3/16” (5mm) minimum diameter stainless steel aircraft cable.

F. Ornamental Picket: Fill the length of frame with pickets to match adjacent fence.

G. Posts: Double sets of support posts shall be minimum 4” x 4” x 3/16” wall square steel tubing, Grade 500. Hot-dip galvanize frames after fabrication.

H. Gate Lock: Furnish with an electro-mechanical lock. Provide lock with status indicator and six tumbler mechanical lock. All gates keyed alike as directed by Resident Engineer.

I. Galvanizing: For items other than hardware that are indicated to be galvanized, hot-dip galvanize to comply with ASTM A 123/A 123M unless otherwise

A. General: Provide factory-assembled automatic operating system designed for gate size, type, weight, and operation frequency. Provide operation control system with characteristics suitable for Project conditions, with remote-control stations, safety devices, and weatherproof enclosures; coordinate electrical requirements with building electrical system.

1. Provide operator designed so motor may be removed without disturbing limit-switch adjustment and without affecting auxiliary emergency operator.

2. Provide gate operators that comply with UL 325.

3. Provide electronic components with built-in troubleshooting diagnostic feature.

4. Provide unit designed and wired for both right-hand/left-hand opening, permitting universal installation.

5. Provide controllers, electrical devices, and wiring.

B. Gate Operators: Concrete base mounted.

C. Motors: Comply with NEMA designation, temperature rating, service factor, enclosure type, and efficiency requirements for motors.

1. Controllers, Electrical Devices, and Wiring: Comply with requirements for electrical devices and connections.

2. Water Resistant Motor Box: Constructed of 10-gauge sheet steel, hot-dip galvanized complying with ASTM A 123, gasketed and located at ground level for easy maintenance. Security hinges with thamper resistant screws shall be furnished to secure operator enclosure components.

D. Gear (Box) Reducer: Self enclosed gear-head gearbox manufactured as a single unit, consisting of a hardened steel, machine cut worm and mating bronze gear running in oil bath. Gearbox to include the following functions, adjustable clutching device, and manual disconnect by crank handle.

E. Gear Box Heater: Operator shall include internal gearbox heater and a heater strip for the control box.

F. Manual Operation: A crank handle, located at ground level in the motor box, shall provide a two-step emergency procedure for manual operation:

1. Unlock and open motor-box door.

2. Fold out handle and crank gate opened or closed.

G. Limits: Equip operator with an integral limit system, providing accurate settings to control the open and close positions of the gate, and shall not be affected by manual operation or motor removal.

A. Galvanized Finish: Clean welds, mechanical connections, and abraded areas and repair galvanizing to comply with ASTM A 780.

B. Surface Preparation: Clean surfaces with nonpetroleum solvent so surfaces are free of oil and other contaminants. After cleaning, apply a zinc phosphate conversion coating suited to the organic coating to be applied over it. Clean welds, mechanical connections, and abraded areas and repair galvanizing to comply with ASTM A 780.

C. High-Performance Coating: Apply epoxy primer, epoxy intermediate coat, and polyurethane topcoat to prepared surfaces. Comply with coating manufacturer’s written instructions and with requirements in SSPC-PA 1, ”Paint Application Specification No. 1: Shop, Field, and Maintenance Painting of Steel,” for shop painting. Apply at spreading rates recommended by coating manufacturer.

1. Match approved Samples for color, texture, and coverage. Remove and refinish, or recoat work that does not comply with specified requirements.

A. Install fence by properly trained crew, on previously prepared surfaces, to line and grade as shown. Install fence in accordance with ASTM F567 and 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, chain links and accessories.

B. A Registered Professional Land Surveyor or Registered Civil Engineer specified in Section 01 00 00, GENERAL REQUIREMENTS, shall stake out and certify the fence alignment to meet the requirements as shown.

A. 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 450 mm (18”) into the bedrock, whichever is less, and provide a minimum of 50 mm (2”) 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.

A. Install gates according to manufacturer’s written instructions, level, plumb, and secure for full opening without interference. 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.

A. General: Install gate operators according to manufacturer’s written instructions, aligned and true to fence line and grade.

B. Excavation for [Support Posts] [Pedestals] [Concrete Bases]: Hand-excavate holes for bases, in firm, undisturbed soil to dimensions and depths and at locations as required by gate operator component manufacturer’s written instructions and as indicated.

C. Concrete Bases: Cast-in-place or precast concrete, [depth not less than 12” (300 mm)] <Insert depth 6 to 12” (150 to 300 mm) below frost line or detail on Drawings>, dimensioned and reinforced according to gate operator component manufacturer’s written instructions and as indicated on Drawings.

D. Vehicle Loop Detector System: [Cut grooves in pavement and ]bury and seal wire loop according to manufacturer’s written instructions. Connect to equipment operated by detector.

E. Comply with NFPA 70 and manufacturer’s written instructions for grounding of electric-powered motors, controls, and other devices.

A. 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.

B. Automatic Gate Operators: Energize circuits to electrical equipment and devices.

Adjust operators, controls, safety devices,[ alarms,] and limit switches.

1. Hydraulic Operators: Purge operating system, adjust pressure and fluid levels, and check for leaks.

2. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.

3. Test and adjust controls[, alarms,] and safeties. Replace damaged and malfunctioning controls and equipment.

C. Lubricate hardware[, gate operators,] and other moving parts.