Gorbel Inc. Hoists and Cranes Specification

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SECTION 14600

HOISTS AND CRANES

** NOTE TO SPECIFIER ** Gorbel Inc.; bridge and jib cranes.
.
This section is based on the products of Gorbel Inc., which is located at:
600 Fishers Run
Fishers, NY 14453
Toll Free Tel: 800-821-0086
Tel: 585-924-6262
Fax: 800-828-1808
Email: request info
Web: www.gorbel.com/solutions/architectsandengineers.asp
[ Click Here ] for additional information.

As an innovator and leader in the enclosed track work station crane industry, Gorbel provides a wide variety of overhead solutions. Our work station systems include ceiling mounted bridge cranes and monorails, freestanding work station bridge cranes, work station jib cranes. We've added gantry cranes and Intelligent Assist Devices. We are also a leading manufacturer of high-performance manual and motorized I-beam jib cranes. Since 1977, Gorbel has been dedicated to providing high-quality overhead material handling solutions backed by a commitment to on-time delivery, a focus on customer service, and the industry's best warranty. Gorbel® products are manufactured at state-of-the-art facilities in New York and Alabama and sold through an extensive dealer network.

Work Station Cranes: Gorbel®'s Ergonomic Overhead Cranes give you the handling equipment that you need to get the job done. Our line of Bridge Crane products guarantees increased productivity with their ability to span up to 30 feet (9 m) and lift capacities from 150 - 4000 lb (70 to 1800 kg). Available in Free Standing, Ceiling Mounted, and Monorail styles; Steel or Aluminum. Seismic Zone IV applications also available.

Free Standing Work Station Bridge Cranes: Free Standing Work Station Bridge Cranes can handle the toughest overhead lifting tasks. These cranes, which can be installed on any normal 6 inch (152 mm) reinforced concrete floor, feature a pre-engineered, modular design that can easily expand as your work centers expand.

Ceiling Mounted Bridge Cranes: When a work area must be free from any support structures that may interfere with operations, ceiling mounted bridge cranes are an excellent solution to keeping floors clear. Handling capacities up to 4000 lb (1800 kg) with overall bridge lengths up to 34 feet (10.4 m), these systems are pre-engineered and modularly designed for easy installation, expansion, and relocation. Customers can install multiple bridges along one set of runways and greatly increase their productivity.

Monorails: Provide a solution for true linear movement. Pre-engineered modular designs enable Gorbel® Work Station Crane Systems to be adapted for more sophisticated applications. This is done by the addition of extra tracks, curves, switches, and interlocks (transfers).

Automated Crane Components: Gorbel mass produces our modular components instead of manufacturing them on a per order basis. This saves you engineering time, so you can get your automated crane components faster, making your integration quick and easy. Ideal for handling large, heavy loads that require slower speeds.

Seismic Zone IV Cranes: Seismic Zone IV Cranes have been designed for the most rigorous applications in areas that must adhere to Seismic Zone IV building code requirements. These cranes are completely free standing and require no sway bracing. The pre-engineered modular kit design of Gorbel®'s Seismic Zone crane systems provide easy expansion or relocation.

Nested Trolley: Ideal for low headroom applications, our nested trolleys enable you to raise the height of the hoist and increase the available lift. A nested trolley is constructed of a dual girder bridge with a box shaped assembly (a "nest") that travels between the bridge girders. With this custom designed "nest", the hoist is mounted up inside the bridge structure, which allows you to get back the lift typically taken up by the body of the hoist.

Interlock/Transfer Cranes: Allow loads to be transferred from a bridge crane to monorail spurs and vice-a-versa. The interlock/transfer cranes are fast and easy to use. The bridge only engages the interlock when the operator actuates it so they do not impede the workers when not in use. The interlock is designed so the trolley stops will lock and not allow the passage of the hoist trolley until the bridge and monorail are in alignment and mechanically linked. The bridge and monorail spur cannot be separated until the trolley stops are fully closed and in the locked position. They can be easily adapted to an existing Gorbel® Work Station Bridge Crane.

Offset Load Platform: Manipulator platforms are specially designed platforms to support almost any rigid or base plate mounted lifting devices and manipulators. With this type of crane, one manipulator can be used in multiple work cells or be moved anywhere within the crane coverage area. Features include leveling capabilities to prevent unwanted drifting, and anti-kickup trolleys and end trucks to prevent binding.

Telescoping Bridge Crane: Telescoping bridge crane allows for extension outside the normal reach of a Gorbel® Work Station Bridge Crane. The telescoping bridge is designed for effortless movement and easy installation. The bridge features an adjustable leveling device and anti-kickup wheels to prevent binding of the bridge when telescoped. Applications for a telescoping bridge include reaching into adjacent work cells to transfer material, loading parts into a machine opening, and reaching out beyond a building column or under mezzanines.

Tractor Drives for Steel and Aluminum Track: Tractor drives provide motorized movement on new or existing enclosed track Gorbel® Work Station Bridge Cranes and Monorails. The drives are designed for indoor use and are available for steel track or aluminum track. Applications for tractor drives include work areas where the operator cannot stand next to the load to move it by hand or during operations with high cycle times that require frequent lifting of heavy, awkward-shaped loads.

Jib Cranes: Gorbel®'s line of Jib Cranes include Enclosed Track Work Station Jibs, Articulating Jibs and I-Beam Cranes.

Work Station Jib Cranes: Enclosed Track Work Station Jibs are ideal for supporting tool balancers, air balancers, hoists, and welding wire and can handle up to 200 degree rotation when wall or column mounted and up to 360 degree rotation when floor mounted. Available in Free Standing, Wall Cantilever, and Aluminum Tie Rod styles.

Articulating Jib Cranes: Articulating Jibs can position loads in places that cannot be reached with traditional jibs. They can move loads around corners, reach into machines or doorways, and swing under obstructions. Available in Free Standing, Ceiling Mounted, and Wall/Column Mounted styles.

I-Beam Jib Cranes: I-Beam Cranes are versatile enough to perform a wide variety of local handling and spotting functions, and economical enough to be dedicated to individual work stations for maximum effectiveness. Available in Free Standing, Wall Cantilever, Wall Bracket, Mast Type, and Motorized Styles.

Foundationless Jib Cranes: Offered in Enclosed Track and I-Beam styles, these jib cranes offer the flexibility and benefits without the additional expense of pouring a new foundation. A standard 6 inches (152 mm) reinforced floor is all that is required.

Gantry Cranes: Gantry Cranes provide an economical way to lift materials anywhere in a facility. The heavy duty end frame design with square tubing uprights, knee braces and channel base provides stable lifting and movement. Gantry Cranes come in Fixed Height Steel and Adjustable Steel.

PART 1

GENERAL

1.1

SECTION INCLUDES

** NOTE TO SPECIFIER ** Delete items below not required for project.

Free standing work stations bridge cranes.

Ceiling mounted work station bridge cranes.

Ceiling mounted workstation steel monorail cranes.

Free standing jib cranes.

Wall cantilever jib cranes.

Mast type jib cranes.

Wall bracket jib cranes.

Free standing work station jib cranes.

Wall cantilever work station jib cranes.

Wall bracket work station jib cranes.

Free standing articulating jib cranes.

Wall mounted articulating jib cranes.

Ceiling mounted articulating jib cranes.

1.2

RELATED SECTIONS

** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.

Section 03300 - Cast-in-Place Concrete: Concrete slab to receive free standing work station bridge crane.

** NOTE TO SPECIFIER ** Hoist trolley to move lifting device along bridge is provided as part of work station bridge crane. Lifting devices are typically provided separately from cranes and specified in another section. As an option, Gorbel, Inc. can provide lifting device as a crane component. Contact Gorbel, Inc. for assistance in specifying lifting devices. Delete if not required.

Section 14620 - Hoists: Lifting device attached to hoist trolley.

** NOTE TO SPECIFIER ** Hoist trolley and can be equipped with an optional electric tractor drive. Tractor drives can also be installed on end trucks to move bridge. Delete if not required.

Section 16100 - Wiring Methods: Electrical supply, conduit, wiring, and other electrical components for powering [lifting device] [hoist trolley tractor drive] [end truck tractor drive].

1.3

REFERENCES

** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.

American Institute of Steel Construction (AISC) - Manual of Steel Construction, Part 5, Specification for Structural Joints Using ASTM A325 or ASTM A490 Bolts.

American National Standards Institute (ANSI):ANSI B30.11 - Monorails and Underhung Cranes.

American Society for Testing and Materials (ASTM) A36 - Carbon Structural Steel.

American Society for Testing and Materials (ASTM) A325 - Structural Bolts, Steel, Heat Treated, 120/150 ksi Minimum Tensile Strength.

American Society for Testing and Materials (ASTM) A490 - Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength.

American Society for Testing and Materials (ASTM) B221 - Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and Tube.

American Welding Society (AWS) D1.1 - Structural Welding Code.

Occupational Safety and Health Administration (OSHA) - Specification 1910.179 - Overhead and Gantry Cranes.

1.4

SUBMITTALS

Submit under provisions of Section 01300.

Product Data: Manufacturer's data sheets on each product to be used, including:

Describe capacities, performance, operation, and applied forces to foundation.

Preparation instructions and recommendations.

Storage and handling requirements and recommendations.

Installation methods.

Shop Drawings:

Shop drawings showing configuration, dimensions, service area, and construction and installation details.

1.5

QUALITY ASSURANCE

Manufacturer Qualifications: Company specializing in designing and manufacturing cranes with 25 years successful experience.

Installer Qualifications: Company experienced in assembly and installation of cranes with 5 years successful experience and acceptable to crane manufacturer.

Perform welding by certified operators in accordance with AWS D14.1.

Bolted connections shall be in accordance with torque tightening procedures specified in AISC Manual, Part 5.

Clearly label crane with rated load capacity. Place label at height and location easily read from floor level and loading position.

1.6

DELIVERY, STORAGE, AND HANDLING

Store products in manufacturer's unopened packaging until ready for installation.

Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.

1.7

PROJECT CONDITIONS

Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.

1.8

WARRANTY

Manufacturer's Warranty: On manufacturer's standard form, in which manufacturer agrees to repair or replace assemblies and components that fail in materials and workmanship within warranty period from date of Substantial Completion.

5 years or 10,000 hours warranty for manual push-pull work station crane, jib crane, and gantry crane products to cover defects in materials and workmanship.

** NOTE TO SPECIFIER ** Include the following paragraph if motorized jib crane or tractor drive for end truck or hoist trolley is required. Delete if not required.

2 years or 4,000 hours warranty for motorized tractor products.

Provide under provisions of Section 01780 - Closeout Submittals:

PART 2

PRODUCTS

2.1

MANUFACTURERS

Acceptable Manufacturer: Gorbel Inc., which is located at: 600 Fishers Run ; Fishers, NY 14453; Toll Free Tel: 800-821-0086; Tel: 585-924-6262; Fax: 800-828-1808; Email: request info; Web: www.gorbel.com/solutions/architectsandengineers.asp

** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.

Substitutions: Not permitted.

Requests for substitutions will be considered in accordance with provisions of Section 01600.

** NOTE TO SPECIFIER ** Delete if bridge cranes not required.

2.2

BRIDGE CRANES

Performance:

Crane shall provide coverage of rectangular area of size indicated on Drawings and consist of:

Support structure requiring only primary structural support without longitudinal or lateral bracing.

Two rigid, parallel runways. Cranes with more than two runways or with articulating runways are not acceptable.

Rigid, single girder bridge moving perpendicular to runways or monorail. Double girder bridges and ones with articulating or threaded connections are not acceptable.

Modular, pre-engineered design: Crane system shall be capable of expansion, disassembly and relocation, and accepting additional or multiple mixed capacity bridges.

Crane shall be designed, fabricated, and installed in accordance with ANSI B30.11, and OSHA 1910.179.

Productivity ratio: Crane shall be designed to manually move load with maximum force of 1/100 load weight.

Runway and bridge track: Enclosed type limiting dust and dirt collection on rolling surfaces with maximum deflection of 1/450 span based on capacity plus 15 percent for lifting device weight.

Crane operating temperature: 5 to 200 degrees F (-15 to 93 C).

Crane shall be designed to withstand:

Structural design shall include full rated load capacity plus 15 percent for hoist and trolley weight and 25 percent impact factor for speed of lifting device and weight of tooling.

Crane and hoist dead load.

** NOTE TO SPECIFIER ** Delete live load capacity not required.

Live load capacity equal to net rated hook load: 250 pounds (113 kg).

Live load capacity equal to net rated hook load: 500 pounds (227 kg).

Live load capacity equal to net rated hook load: 1000 pounds (454 kg).

Live load capacity equal to net rated hook load: 2000 pounds (908 kg).

Live load capacity equal to net rated hook load: 4000 pounds (1816 kg).

Inertia forces from crane and load movement.

** NOTE TO SPECIFIER ** Typically, cranes are designed for normal interior operation. Contact Gorbel, 1nc. for assistance in specifying cranes requiring seismic and other additional loads or cranes operating in high humidity or corrosive environments.
** NOTE TO SPECIFIER ** Gorbel offers runways in aluminum and stainless steel. Refer to manufacturer's literature for availability and specification provisions.

** NOTE TO SPECIFIER ** Delete free standing bridge crane if not required.

Free Standing Bridge Crane: Work station, bridge crane with free standing support structure, two runways, bridge moving perpendicular to runways, and equipped with enclosed track, end trucks, hoist trolley, festooning system, bumpers, and other accessories.

Acceptable Manufacturer and Model:

** NOTE TO SPECIFIER ** Delete model not required.

Model GLCS-FS: Cranes with trussed steel runways supported at 20 feet (6 m) maximum as manufactured by Gorbel Inc.

Model GLCSL-FS: Cranes with trussed steel runways supported at 25 feet (7.6 m) maximum as manufactured by Gorbel Inc.

Model GLCSLX-FS: Cranes with trussed steel runways supported at 30 feet (9.1 m) maximum as manufactured by Gorbel Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Support structure: Support crane runways with frames consisting of two columns and horizontal header.

Columns: Square tubes with bottom base plate and top header plate.

Header: Fabricated from two back-to-back channels spaced apart and joined with welded end plates. Provide clamp plates, threaded rods, lock washers, and hex nuts for attaching header to column.

Hanger assemblies: Provide each support frame with pair of hanger assemblies that provide a rigid connection for suspending runways. Assembly to consist of clamp angle, clamp plates, threaded rods, lock washers, and hex nuts.

** NOTE TO SPECIFIER ** Include the following paragraph to specify trussed steel runways, Models GLCS (20 feet (6 m) maximum support centers), GLCSL (25 feet (7.6 m) maximum support centers), and GLCSLX (30 feet (9.1 m) maximum support centers). Delete if not required.

Runways: Vierendeel truss fabricated from square steel tubes and enclosed steel track.

Track: Enclosed, cold formed, steel box track which serves as bottom cord of runway and permits end trucks and festoon carriers to ride on lower inside flanges. Fabricate lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

Splice joint: Provide truss splice plates, channel-shaped track splice joint, bolts, lock washers, and nuts for joining runway sections. Splice joints must be located within four feet of a support point.

Runway Cantilevers: Up to 4 feet (1219 mm) of cantilever is allowed from a hanger location to the end of the runway.

** NOTE TO SPECIFIER ** A short section of enclosed track can be added to runway track for stacking festoon carriers and not limit full coverage of bridge crane. Include the following paragraph for this option. Delete if not required.

Festoon stack section: Provide enclosed track extension to provide for stacking festoon carriers at end of runway.

** NOTE TO SPECIFIER ** Typical bridge is a Vierendeel truss using the enclosed track as the bottom truss cord. The ends of the track extend beyond the truss to connect to end trucks on the runways. This provides a higher trolley saddle since the bridge is not completely positioned below the runways. For cranes with low capacity and short bridges, a length of enclosed track can serve as the bridge. Refer to Gorbel® product literature for type of bridge used for specific crane being specified. Include the following paragraph to specify trussed steel bridge. Delete if not required.

Bridge: Single girder, Vierendeel truss fabricated from rectangular steel tubes and enclosed steel box track; patented truss design for 1000, 2000, and 4000 lb. capacities.

Track serves as bottom cord of bridge and permits hoist trolley and festoon carriers to ride on lower inside flanges.

Fabricate lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

** NOTE TO SPECIFIER ** Include the following paragraph to specify enclosed steel track bridge. Delete if not required.

Bridge: Enclosed, cold formed steel box track which permits hoist trolleys and festoon carriers to ride along track lower inside flanges. Fabricate lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

** NOTE TO SPECIFIER ** Include the following paragraph to specify an aluminum track bridge. Delete if not required.

Bridge: Patented extruded aluminum enclosed track reinforced with extruded aluminum T-beam.

Provide as either one piece extrusion or with separate T-beam bolted to track.

Track: Enclosed, box track designed for trolleys and festoon carriers to ride on lower inside flanges. Fabricate lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

End trucks: Rigid frame end truck designed to ride inside enclosed runway track and connect to and suspend bridge.

Construction: Stamped steel fabrication with both vertical and horizontal wheels to prevent binding in runway. Designs with welds in tension are not acceptable.

Wheels: Removable, self-centering wheels with sealed lifetime lubricated bearings. Vertical wheels shall be tapered 2 degrees to match track profile. Non-removable or non-tapered wheels are not acceptable. Duracomp 4™ wheel material as provided by Gorbel Inc. Steel wheels are not acceptable.

Drop lugs: Provide on both sides of truck to limit truck drop in the event of wheel, axle, or load bar failure.

Connection to the bridge: Provide a rigid connection between bridge and end truck. Articulating connections with threaded hardware are not acceptable.

Designed for easy attachment of peripherals.

Hoist trolley: Rigid-body trolley designed to ride inside enclosed track of bridge and to carry hoist and load. Articulating trolleys are not acceptable.

Construction: Two-piece stamped steel body with two wheels each side and tapered clevis positioning hoist hook at center of trolley so load weight is evenly distributed to all four trolley wheels. Provide removable clevis pin of type and size determined by manufacturer for specified capacity. Trolleys with non-removable clevis pins are not acceptable. Holes provided in body for mechanical connections.

Drop lugs: Provide on both sides of trolley to limit trolley drop in the event of wheel, axle, or load bar failure.

Designed for easy attachment of peripherals.

10.

End stops: Molded composite, resilient bumper installed in runway and bridge tracks to prevent end trucks, hoist trolley, and festoon carriers from rolling out of track. Bolt stops without energy absorbing bumper are not acceptable.

** NOTE TO SPECIFIER ** Delete ceiling mounted bridge crane if not required.

Ceiling Mounted Bridge Crane: Ceiling mounted, work station, steel construction, bridge crane with overhead hanger assemblies, two runways, bridge moving perpendicular to runways, and equipped with enclosed track, end trucks, hoist trolley, festooning system, bumpers, and other accessories

Acceptable Manufacturer and Model:

** NOTE TO SPECIFIER ** Delete model not required.

Model GLC: Cranes with plain enclosed steel track runways supported at 6 feet (1.8 m).

Model GLCS: Cranes with trussed steel runways supported at 20 feet (6 m) maximum as manufactured by Gorbel Inc.

Model GLCSL: Cranes with trussed steel runways supported at 20 to 25 feet (6 m to 7.6 m) maximum as manufactured by Gorbel Inc.

Model GLCSLX: Cranes with trussed steel runways supported at 25 to 30 feet (7.6 m to 9.1 m) maximum as manufactured by Gorbel Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

** NOTE TO SPECIFIER ** Ceiling mounted bridge cranes are typically attached to overhead structural steel framing with hanger assemblies designed to clamp onto wide flange steel beams. Contact Gorbel, Inc. if concrete or other type of support structure is used.

Hanger assemblies: Provide number and type of hanger assemblies required for suspending runways from overhead steel beam support structure.

Equip assemblies with upper hanger bracket adjustable for mounting from 1 to 10 inches (25 mm to 254 mm) flanges and two beam clips.

** NOTE TO SPECIFIER ** Include the following paragraph if either plain track or trussed runways are suspended by threaded rods below steel support beams. Delete if not required.

Two-piece hangers suspending runways below support beams shall consist of upper hanger bracket (fits flanges from 1 inches to 10 inches (25 mm to 254 mm)) with beam clips and lower runway bracket connected with threaded B7 alloy steel rod. Provide rods in 20 and 72 inches (508 mm and 1829 mm) lengths for field cutting. Assemblies shall be designed for supporting either plain enclosed steel track runways or trussed steel runways.

** NOTE TO SPECIFIER ** Include the following paragraph if plain or trussed track runways are flush mounted to steel support beams. Delete if not required.

Hangers for flush mounting available for plain or trussed track.

** NOTE TO SPECIFIER ** Sway bracing is required if runways are suspended by B7 alloy threaded rods below steel support beams. Bracing needs to be designed by architect/engineer, detailed on drawings, and specified in other sections. Gorbel can provide optional sway brace fittings used to connect 1 inch diameter diagonal pipe bracing to top chord of trussed runway. Edit and include the following paragraph if sway bracing is required. Delete if not required.

Sway bracing: Brace runways as detailed on Drawings and specified in Section 05120 - Structural Steel. Provide runways with sway brace fittings for attachment of diagonal pipe bracing to top chord of trussed runway.

** NOTE TO SPECIFIER ** Include the following paragraph to specify trussed runway, Models GLCS (20 feet (6 m) maximum support centers), GLCSL (25 feet (7.6 m) maximum support centers), and GLCSLX (30 feet (9.1 m) maximum support centers). Delete if not required.

Runways: Vierendeel truss fabricated from square steel tubes and enclosed steel track.

Splice joint: Provide truss splice plates, channel-shaped track splice joint, bolts, lock washers, and nuts for joining runway sections.

** NOTE TO SPECIFIER ** Include the following paragraph to specify plain enclosed steel track runway, Model GLC (6 feet (1.8 m) maximum support centers). Delete if not required.

Runways: Enclosed, cold formed, steel box track which permits end trucks and festoon carriers to ride along runway.

Fabricate lower running flanges with 2 degrees taper to center truck within track. Flat, non-centering track runways are not acceptable.

Splice joint: Provide channel-shaped track splice joint with bolts, lock washers, and nuts for joining runway sections.

** NOTE TO SPECIFIER ** A short section of enclosed track can be added to runway track for stacking festoon carriers so that bridge can cover full runway length. Include the following paragraph for this option. Delete if not required.

Festoon stack section: Provide enclosed track extension to provide for stacking festoon carriers at end of runway.

** NOTE TO SPECIFIER ** Depending on crane capacity and bridge length, bridge for ceiling mounted work station bridge crane can be either plain enclosed steel track section of Vierendeel truss. Refer to Gorbel® product literature for appropriate type of bridge.
Include the following paragraph to specify trussed bridge. Delete if not required.

Bridge: Single girder, Vierendeel truss fabricated from rectangular steel tubes and enclosed steel box track. Patented design for 1000, 2000, and 4000 lb. capacities.

Track serves as bottom cord of bridge and permits hoist trolley and festoon carriers to ride on lower inside flanges.

Fabricate track lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

Include the following paragraph to specify plain enclosed steel track bridge. Delete if not required.

Bridge: Enclosed, cold formed, steel box track which permits hoist trolley and festoon carriers to ride along lower inside flanges. Fabricate lower running flanges with 2 degrees taper to center truck within track. Flat, non-centering track bridges are not acceptable.

** NOTE TO SPECIFIER ** Include the following paragraph to specify an aluminum track bridge. Delete if not required.

10.

Bridge: Patented extruded aluminum enclosed track reinforced with extruded aluminum T-beam.

Provide as either one piece extrusion or with separate T-beam bolted to track.

11.

End trucks: Rigid frame end truck designed to ride inside enclosed runway track and connect to and suspend bridge.

Construction: Stamped steel fabrication with both vertical and horizontal wheels to prevent binding in runway. Designs with welds in tension are not acceptable.

Drop lugs: Provide on both sides of truck to limit truck drop in the event of wheel, axle, or load bar failure.

Connection to the bridge: Provide a rigid connection between bridge and end truck. Articulating connections with threaded hardware are not acceptable.

Designed for easy attachment of peripherals.

12.

Hoist trolley: Rigid-body trolley designed to ride inside enclosed track of bridge and carry hoist and load. Articulating trolleys are not acceptable.

Drop lugs: Provide on both sides of trolley to limit trolley drop in the event of wheel, axle, or load bar failure.

Designed for easy attachment of peripherals.

13.

** NOTE TO SPECIFIER ** Delete if not required.

Ceiling Mounted Monorail Crane: Ceiling mounted, work station, all-steel construction, monorail crane with overhead hanger assemblies, enclosed track, hoist trolley, festooning system, bumpers, and other accessories.

Acceptable Manufacturer and Model:

** NOTE TO SPECIFIER ** Delete model not required.

Model No. GLM: Cranes with plain enclosed steel track monorail supported at 6 feet (1.8 m) as manufactured by Gorbel, Inc.

Model No. GLMS: Cranes with trussed steel monorail supported at 20 feet (6.1 m) maximum as manufactured by Gorbel, Inc.

Model No. GLCML: Cranes with trussed steel monorail supported at 20 to 25 feet (6.1 m to 7.6 m) maximum as manufactured by Gorbel, Inc.

Model No. GLMSLX: Cranes with trussed steel monorail supported at 25 to 30 feet (7.6 m to 9.1 m) maximum as manufactured by Gorbel, Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

** NOTE TO SPECIFIER ** Ceiling mounted monorail cranes are typically attached to overhead structural steel framing with hanger assemblies designed to clamp onto wide flange steel beams. Contact Gorbel, Inc. if concrete or other type of support structure is used.

Hanger assemblies: Provide number and type of hanger assemblies required for suspending monorail from overhead steel beam support structure.

Equip assemblies with upper hanger bracket adjustable for mounting from 1 to 10 inches (25 mm to 254 mm) flanges and two beam clips.

** NOTE TO SPECIFIER ** Include the following paragraph if either plain track or trussed monorail is suspended by threaded rods below steel support beams. Delete if not required.

Two-piece hangers suspending monorail below support beams shall consist of upper hanger bracket (fits flanges from 1 inches to 10 inches (25 mm to 254 mm)) with beam clips and lower monorail bracket connected with threaded B7 alloy steel rod. Provide rods in 20 and 72 inches (508 mm and 1829 mm) lengths for field cutting. Assemblies shall be designed for supporting either plain enclosed steel track monorails or trussed steel monorails.

** NOTE TO SPECIFIER ** Include the following paragraph if plain track monorails are flush mounted to steel support beams. Delete if not required.

Hangers for flush mounting plain enclosed steel track monorail shall be one-piece assembly designed for monorail either parallel or perpendicular to support beams.

** NOTE TO SPECIFIER ** Sway bracing is required if monorail is suspended by threaded rods below steel support beams. Bracing needs to be designed by architect/engineer, detailed on drawings, and specified in other sections. Gorbel can provide optional sway brace fittings used to connect 1 inch diameter diagonal pipe bracing to top chord of trussed monorail. Edit and include the following paragraph if sway bracing is required. Delete if not required.

Sway bracing: Brace monorail as detailed on drawings, in installation manuals, and specified in Section 05120 - Structural Steel. Provide monorail with sway brace fittings for attachment of diagonal pipe bracing to top chord of trussed monorail.

** NOTE TO SPECIFIER ** Include the following paragraph to specify trussed monorail, Models GLCS (20 feet (6.1 m) maximum support centers), GLCSL (25 feet (7.6 m) maximum support centers), and GLCSLX (30 feet (9.1 m) maximum support centers). Delete if not required.

Monorail: Vierendeel truss fabricated from square steel tubes and enclosed steel track.

Track: Enclosed, cold formed, steel box track which serves as bottom cord of monorail and permits hoist trolley and festoon carriers to ride on lower inside flanges. Fabricate lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

Splice joint: Provide truss splice plates, channel-shaped track splice joint, bolts, lock washers, and nuts for joining monorail sections.

** NOTE TO SPECIFIER ** Include the following paragraph to specify plain enclosed steel track monorail, Model GLM. Delete if not required.

Monorail: Enclosed, cold formed, steel box track which permits hoist trolley and festoon carriers to ride along monorail.

Fabricate lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

Splice joint: Provide channel-shaped track splice joint with bolts, lock washers, and nuts for joining monorail sections.

** NOTE TO SPECIFIER ** A short section of enclosed track can be added to monorail track for stacking festoon carriers. Include the following paragraph for this option. Delete if not required.

Festoon stack section: Provide enclosed track extension to provide for stacking festoon carriers at end of monorail.

Hoist trolley: Rigid-body trolley designed to ride inside enclosed track of bridge and carry hoist and load. Articulating trolleys are not acceptable.

Drop lugs: Provide on both sides of trolley to limit trolley drop in the event of wheel, axle, or load bar failure.

Designed for easy attachment of peripherals.

End stops: Molded composite, resilient bumper installed in monorail track to prevent hoist trolley and festoon carriers from rolling out of track. Bolt stops without energy absorbing bumper are not acceptable.

** NOTE TO SPECIFIER ** Hoist trolley and end truck can be motorized using Gorbel® Tractor Drive. Include this article for this option. Delete model not required.

Tractor Drive:

Provide electric tractor drive for motorized operation of hoist trolley and end truck as indicated or scheduled; Tractor Drive as manufactured by Gorbel, Inc.

Type: Variable frequency drive assembly with worm gear reducer, molded polyurethane tread, and adjustable counter-balance to ensure proper drive wheel alignment.

** NOTE TO SPECIFIER ** Standard drive speeds are 70, 90, and 120 feet per minute. Other speeds are available as options. Delete speed not required.

Speed: 70 feet per minute (21.3 m per minute).

Speed: 90 feet per minute (27.4 m per minute).

Speed: 120 feet per minute (36.5 m per minute).

Motor: 1/3 HP, 1800 RPM, 3 phase, 208-460 volt, with thermal overload protection.

** NOTE TO SPECIFIER ** Either 120 volt or 24 volt controls can be provided. Control panel is typically field wired to drive motor. As an option, the system can be factory wired. Delete voltage not required.

Controls: 120 volt control package with transformer, terminal strips, fusing, enclosure, and mounting brackets.

Controls: 24 volt control package with transformer, terminal strips, fusing, enclosure, and mounting brackets.

** NOTE TO SPECIFIER ** Control panel is typically field wired to drive motor. As an option, the system can be factory wired. Delete option not required.

Controls to be field wired to drive motor.

Controls to be factory wired to drive motor.

** NOTE TO SPECIFIER ** Delete if not required.

Festoon Assemblies:

** NOTE TO SPECIFIER ** Several accessories are provided as options for bridge cranes. Select required options from the following. Contact Gorbel, Inc. or refer to product literature if other types of accessories are required. If motorized tractor drive or electric or air-powdered lifting device is used, a length of cable or hose can be provided for installation on runway and bridge. Include the following to specify hose or cable.

Provide length of cable and/or air hose to supply lifting device. Supply shall be festooned along bridge and runway. Refer to drawings for type and size.

** NOTE TO SPECIFIER ** Either festoon trolleys or gliders can be provided to support electrical cable, air hose, or vacuum hose on bridge and runway and allow festooning as hoist trolley and end trucks travel. Electrical and air trolleys are equipped with U-bolt clamps. Vacuum trolleys have straps with velcro. Include the following paragraph to specify festoon trolleys.

Festoon trolleys: Four-wheeled trolleys with pivoting saddle and applicable attachment to support service run on runway or bridge and allowing festooning as end truck or hoist trolley travels.

** NOTE TO SPECIFIER ** Include the following paragraph to specify festoon gliders. Electrical and air gliders are equipped with clamps. Vacuum gliders have straps with velcro.

Festoon gliders: T-shaped gliders with adjustable applicable attachment to support service runs on runway or bridge and allowing festooning as end truck or hoist trolley travels.

** NOTE TO SPECIFIER ** Festoon clamps are required for festooning electrical cable, air hose, or vacuum hose to prevent festoon trolleys and gliders exiting track.

Festoon clamp: Steel clamp assembly attached to track to prevent festoon trolleys and gliders from exiting track.

** NOTE TO SPECIFIER ** Festoon tow clamps are required for festooning electrical cable, air hose, or vacuum hose to prevent festoon from binding under with end truck or trolley.

Festoon tow clamp: Steel clamp assembly attached to track to prevent festoon from binding under with end truck or trolley.

** NOTE TO SPECIFIER ** Telescoping bridges and interlock/transfer cranes can also be provided for bridge crane systems. Contact Gorbel, Inc. for product information and assistance in specifying these accessories.

** NOTE TO SPECIFIER ** Delete if not required.

2.3

JIB CRANES

Performance:

Crane shall be designed, fabricated, and installed in accordance with ANSI B30.11 and OSHA 1910-179.

Crane shall be designed for minimum effort manual rotation.

Boom shall not drift when at rest.

Maximum deflection at boom end: 1/150 span based on capacity plus 15 percent for hoist and trolley weight.

** NOTE TO SPECIFIER ** Edit the following to reflect project structural design requirements.

Crane shall be designed to withstand the following:

** NOTE TO SPECIFIER ** Free standing jib crane, free standing work station jib crane, wall cantilever work station jib crane, wall bracket aluminum work station jib crane, free standing articulating jib crane, wall mounted articulating jib crane and ceiling mounted articulating jib crane. Delete capacity not required.
** NOTE TO SPECIFIER ** Free standing work station jib crane, wall bracket aluminum work station jib crane and wall cantilever work station jib crane are the only models available in 100 and 1000 pound capacity.
** NOTE TO SPECIFIER ** Wall bracket aluminum work station jib crane is only model available in 2000 pound capacity.

Live load capacity equal to net rated hook load: 100 pounds (45 kg).

Live load capacity equal to net rated hook load: 150 pounds (68 kg).

Live load capacity equal to net rated hook load: 250 pounds (113 kg).

Live load capacity equal to net rated hook load: 500 pounds (227 kg).

Live load capacity equal to net rated hook load: 1000 pounds (454 kg).

Live load capacity equal to net rated hook load: 2000 pounds (908 kg).

** NOTE TO SPECIFIER ** Wall cantilever, wall bracket and mast type jib crane. Wall bracket jib crane not available in 1/4 ton capacity. Delete capacity not required.

Live load capacity equal to net rated hook load: 1/4 ton (227 kg).

Live load capacity equal to net rated hook load: 1/2 ton (454 kg).

Live load capacity equal to net rated hook load: 1 ton (907 kg).

Live load capacity equal to net rated hook load: 2 ton (1814 kg).

Live load capacity equal to net rated hook load: 3 ton (2721 kg).

Live load capacity equal to net rated hook load: 5 ton (4536 kg).

** NOTE TO SPECIFIER ** Standard impact factor for crane design is 25 percent. Contact Gorbel, Inc. if increased factor is required for high impact applications.

Base crane structural design on live load capacity plus 15 percent for hoist and trolley weight and 25 percent for impact.

** NOTE TO SPECIFIER ** Typically cranes are designed for normal interior operation and design does not include thermal, wind, seismic, and snow loads. Contact Gorbel, 1nc. for assistance in specifying cranes requiring these additional loads or cranes operating in high humidity or corrosive environments.

** NOTE TO SPECIFIER ** Delete if not required.

Free Standing Jib Crane: Crane shall consist of mast requiring foundation support and a 360 degree rotating boom. Provide rotating collector assembly with service entrance and festoon service support as indicated.

Acceptable Manufacturer and Model:

** NOTE TO SPECIFIER ** Delete model not required.

Model No. FS300 as manufactured by Gorbel 1nc.: Base plate mounted crane.

Base plate mounting: Provide hexagonal steel base plate welded to mast for anchoring crane to concrete foundation cast flush with floor slab.

Model No. FS350 as manufactured by Gorbel 1nc.: Insert mounted crane.

Insert mounting: Provide square steel base plate welded to mast for anchoring mast to concrete foundation cast below floor slab. Base plate is then embedded with concrete. There shall be no exposed base plate or gussets.

Model No. FS350S as manufactured by Gorbel Inc.: sleeve mounted crane.

Sleeve mounting: Provide steel pipe sleeve with steel base plate and centering pin of size indicated on shop drawings. Pipe sleeve shall be bolted to concrete foundation cast below floor slab and then embedded with reinforced concrete. Sleeve, base plate, and bolts shall not be exposed. Mast equipped with steel plate end with centering hole shall be inserted in sleeve and permanently secured to prevent rotation.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Mast: Stationary steel pipe, perpendicular to boom. Equip mast top with plate and pivot pin to receive head assembly.

Boom: Horizontal, wide flange steel beam bolted to head assembly and designed for hoist trolley traveling on bottom flange. Reinforce with cap channel as required for lateral stability. Equip boom with stops to limit movement of trolley.

Head assembly: Welded steel plate and channel fabrication fitted over mast, bolted to boom, and designed to transfer boom load to mast and to rotate. Assembly shall allow for installation of head prior to boom attachment and provide maximum hoist lift.

Top pivot bearing assembly: Designed to connect head assembly to mast and transfer load from boom. Weight bearing channel connecting sides of head assembly shall contain tapered roller bearings allowing easy rotation.

Retaining pin: Inserted through mast pivot pin above weight bearing channel to prevent accidentally dislodging head assembly. Cranes without retaining pin are not acceptable.

Trunnion roller assembly: Designed to rotate around mast and transmit moment force from boom to mast. Provide trunnion rollers with tapered bearings held in steel channel with 1 inch (25 mm) diameter bolts. Masts less than 18 inches (457 mm) diameter shall have 2 rollers and larger masts shall have 4 rollers. Assembly shall rotate around mast with full roller face contact. Roller surface shall be sufficiently large to prevent cutting into mast. Cranes with small rollers or cams requiring wear band on mast are not acceptable.

** NOTE TO SPECIFIER ** Wall cantilever jib cranes are very cost effective and allow maximum hoist lift. However, they require a structurally adequate wall, column, or other vertical member for support. Delete if not required.

Cantilevered Jib Crane: Crane shall consist of wall bracket mounted horizontal boom attached to vertical mast which rotates 200 degrees covering a semi-circular area.

Acceptable Manufacturer and Model:

Model No. WC200-B as manufactured by Gorbel Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

** NOTE TO SPECIFIER ** Depending on crane size, boom is either factory welded to mast or field bolted. Welding is used when mounting bracket center to center spacing is 72 inches (1829 mm) or less. Cranes with greater spacing are shipped disassembled to be field bolted.

Boom: Horizontal, wide flange steel beam designed for hoist trolley traveling on bottom flange. Reinforce with cap channel as required for lateral stability and stiffeners at critical stress points. Equip boom with stops to limit movement of trolley.

Mast: Vertical, wide flange steel section perpendicular to boom and parallel to crane rotation axis.

** NOTE TO SPECIFIER ** Motorized wall cantilever jib cranes require extra rigidity to withstand forces of motorized rotation. This is accomplished by boxing in mast with steel plate. An extended plate and gusset welded to mast bottom is also required to receive motor operator rotation arm. Include the following two paragraphs for if motorized crane is being specified. Delete if not required.

Box-in mast by welding steel plate to mast flanges to provide rigidity for withstanding motor operator induced forces.

Weld steel plate and gusset to mast bottom to receive motor operation rotation arm.

Two Mounting Brackets: Designed to anchor mast to support structure, allow boom rotation, resist drift. Load-carrying parts will be double shear and no bolt stress will exceed 10,000 psi (69 MPa). Brackets with tension welds are not acceptable.

Formed channel to be bolted to support structure and equipped with pivot pin and oil-impregnated bronze thrust washer.

Fabricated "I" bracket to be welded to mast and joined to formed channel with pivot pin. Provide with oil-impregnated bronze bushings and field lubricated grease fitting.

** NOTE TO SPECIFIER ** Wall bracket jib cranes are very economical. However, they require a structurally adequate wall, column, or other vertical member for support. Delete if not required.

Wall Bracket Jib Cranes: Crane shall consist of 200 degree rotating steel beam boom covering a semi-circular area and suspended by brackets and tie rod from vertical support structure.

Acceptable Manufacturer and Model:

Model No. WB100-G as manufactured by Gorbel, Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Boom: Horizontal, adjustable, wide flange steel beam designed for hoist trolley traveling on bottom flange. Reinforce with cap channel as required for lateral stability. Equip boom with stops to limit movement of trolley.

Top bracket: Designed to absorb tie rod pull force and equipped with pivot assembly to allow boom rotation. Bracket bolted to supporting structure and connected to a single tie rod suspending boom. Brackets with tension welds are not acceptable. Top bracket consists of:

Steel channel anchored to supporting structure with double shear bolted connections.

Rotating clevis bracket consisting of steel tube, bronze bushings, wrap-around channel, grease fitting to be field lubricated, oil-impregnated thrust washer, and double shear pivot bolt assembly.

Formed clevis attached to tie rod with adjusting nut and lock washer and retained in clevis bracket with double shear pin.

Beam bracket to connect tie rod to boom: Consists of formed clevis to receive tie rod, beam channel to be bolted to top flange of boom, and double shear pivot bolt joining clevis and beam channel. Brackets with tension welds are not acceptable.

Bottom bracket to absorb downward and compressive boom forces, allow boom rotation, and resist boom drift: Consists of formed channel bolted to supporting structure, boom connector plate and tube assembly, bronze bushings, oil-impregnated bronze thrust washer, double shear pivot bolt, and field lubricated grease fitting.

Tie rod: Single, right-hand threaded at each end, ASTM A36 steel rod. Double tie rods are not acceptable.

** NOTE TO SPECIFIER ** Mast type jib cranes are economical, capable of 360 degrees rotation allowing full utilization of working area, and exert smaller forces on supporting structure than any other type of jib crane. However, mast type jib cranes do require foundation support and top stabilization. Delete if not required.

Mast Type Jib Crane: Crane shall consist of floor-supported, top-stabilized steel beam mast connected to 360 degree rotating steel beam boom covering circular work area.

Acceptable Manufacturer and Model:

** NOTE TO SPECIFIER ** Delete model not required.

Model MT450 - Drop cantilever as manufactured by Gorbel, 1nc.

Model MT400 - Full cantilever as manufactured by Gorbel, Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

** NOTE TO SPECIFIER ** For Model MT400 boom is attached to top of mast providing maximum hoist lift. For Model MT450 boom can be placed at any level on mast allowing for overhead obstructions such as lighting fixtures, ductwork and piping. Height under boom will vary with crane configuration, project conditions, and user requirements.

Boom: Horizontal, wide flange steel beam designed for hoist trolley traveling on bottom flange.

Reinforce with cap channel as required for lateral stability.

** NOTE TO SPECIFIER ** Include the following paragraph for full cantilever configuration, Model MT400. Delete if not required.

Provide plate welded to inside end of boom to be bolted to outside flange of mast.

** NOTE TO SPECIFIER ** Include the following paragraph for drop cantilever configuration, Model MT450. Delete if not required.

Provide plate and gusset welded to top inside end of boom to be bolted to outside flange of mast at specified height.

** NOTE TO SPECIFIER ** Include the following paragraph if trolley type hoist is used. Delete if not required.

Equip boom with stops to limit movement of trolley.

Mast: Vertical, wide flange steel section perpendicular to boom and parallel to crane rotation axis.

Reinforce with stiffeners at critical stress points.

Provide steel plate with pivot pin for top and bottom ends of mast.

** NOTE TO SPECIFIER ** Include the following paragraph for full cantilever configuration, Model MT400. Delete if not required.

Provide plate welded to top of mast to be bolted to top flange of boom.

** NOTE TO SPECIFIER ** Motorized mast type jib cranes require extra rigidity to withstand forces of motorized rotation. This is accomplished by boxing in mast with steel plate. Include the following paragraph for motorized mast type jib crane. Delete if not required.

Box-in mast by welding steel plate to mast flanges to provide rigidity for withstanding motor operator induced forces.

Top and bottom bearing assemblies: Consist of 3/4 inch (19 mm) thick steel mounting plate with self-aligning, radial ball bearing in machined housing welded to mounting plate and field lubricated grease fitting. Provide bottom bearing assembly with bronze thrust washer.

** NOTE TO SPECIFIER ** Delete if not required.

Free Standing Work Station Jib Crane: Crane shall consist of free standing mast requiring only foundation support and 360 degree rotating boom covering circular work area around mast. Free standing, base plate mounted, manually operated, steel, work station jib crane consisting of stationary mast and rotating boom and equipped with pivot pin, trunnion roller assembly, enclosed track, hoist trolley and other accessories.

Acceptable Manufacturer and Model:

Model No. WSJ360 as manufactured by Gorbel Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Mast: Stationary steel pipe, perpendicular to boom. Equip mast with:

Baseplate: Square or hexagonal steel base plate welded to mast for anchoring crane to concrete foundation. Welded triangular, full-web gusset plates to mast and base plate for stability and reinforcement where required. Cranes with open gussets or base plates made from rings and subject to warping are not acceptable.

Top plate: Circular steel plate with pivot pin to receive boom. Provide retaining pin to prevent accidentally dislodging boom. Cranes without retaining pin are not acceptable.

Boom: Open truss construction fabricated from rectangular steel tubes and enclosed steel track.

Configuration: L-shape with horizontal boom and vertical leg to hold trunnion rollers.

Trolley track: Enclosed, cold formed, steel box track which serves as bottom cord of horizontal boom and permits trolleys and festoon carriers to ride on lower inside flanges. Fabricate lower running flanges with 2 degrees taper to center trolley within track. Flat, non-centering tracks are not acceptable.

Trunnion roller or cam follower assembly: Designed to rotate around mast and transmit moment load from boom to mast. Assembly is bolted to steel attachment angle welded to bottom leg of boom and consists of two rollers held in steel bracket with bolts. Assembly shall rotate around mast with full roller face contact. Roller surface shall be sufficiently large to prevent cutting into mast.

Pivot assembly: Attached to extended top cord of boom and fits over mast pivot pin. Provide with tapered roller pivot bearings.

Hoist trolley: Rigid-body trolley designed to ride inside enclosed track and carry hoist and load. Articulating trolleys are not acceptable.

Construction: Two-piece stamped steel body with two wheels each side and tapered clevis positioning hoist hook at center of trolley so load weight is evenly distributed to all four trolley wheels. Provide removable clevis pin of type and size determined by manufacture for specified capacity. Trolleys with non-removable clevis pins are not acceptable. Holes provided in body for mechanical connections.

Wheels: Four, removable, self-centering wheels with sealed lifetime lubricated bearings and tapered 2 degrees to match track profile. Non removable or non-tapered wheels are not acceptable.

Drop lugs: Provide on both sides of trolley to limit trolley dropping in the event of wheel, axle, or load bar failure.

Designed for easy attachment of peripherals.

End stops: Molded composite, resilient bumper installed in track at boom end to prevent hoist trolley and festoon carriers from rolling out of track. Bolt stops without energy absorbing bumper at not acceptable.

** NOTE TO SPECIFIER ** Free standing work station jib cranes can be provided with a base assembly capable of being lifted with lift truck and transported to multiple locations. Delete if not required.

Portable base: Provide steel base assembly to anchor mast and allow crane to be transported to multiple locations with lift truck.

** NOTE TO SPECIFIER ** Delete if not required.

Wall Cantilever Work Station Jib Crane: Wall cantilever work station jib crane including hoist trolley. Crane shall consist of wall mounted, manually operated, horizontal boom cantilevered from vertical leg mast which rotates 200 degrees covering a semi-circular area.

Acceptable Manufacturer and Model:

Model No. WSJ200 as manufactured by Gorbel Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Configuration: L-shape with horizontal boom and vertical leg mast. Provide with top and bottom pivots pins.

Top and bottom pivot mounting assemblies: Designed to anchor boom/mast to support structure, allow boom/mast rotation and resist drift. Assembly consists of steel bracket, bearings, and cotter pins.

Hoist trolley: Rigid-body trolley designed to ride inside enclosed track and carry hoist and load. Articulating trolleys are not acceptable.

Construction: Two-piece stamped steel body with two wheels each side and tapered clevis positioning hoist hook at center of trolley so load weight is evenly distributed to all four trolley wheels. Provide removable clevis pin of type and size determined by manufacture for specified capacity. Trolleys with non-removable clevis pins are not acceptable. Holes provided in body for mechanical connections.

Wheels: Four, removable, self-centering wheels with sealed lifetime lubricated bearings and tapered 2 degrees to match track profile. Non removable or non-tapered wheels are not acceptable.

Drop lugs: Provide on both sides of trolley to limit trolley drop in the event of wheel, axle, or load bar failure.

Designed for easy attachment of peripherals.

** NOTE TO SPECIFIER ** Delete if not required.

Wall Bracket, Manually Operated, Work Station, Aluminum Jib Crane: Crane shall consist of 200 degree rotating aluminum beam boom covering a semi-circular area and suspended by brackets and tie rod from vertical support structure. Wall bracket supported, manually operated, work station jib crane with rotating aluminum boom with enclosed track, brackets, tie rod, hoist trolley, and other accessories;

Acceptable Manufacturers and Model:

Model No. AL-100-GT as manufactured by Gorbel, 1nc.

Construction: Fabricate from ASTM B221 extruded aluminum sections and ASTM A36 steel sections with finished ends and surfaces.

Boom: Extruded aluminum enclosed track reinforced with extruded aluminum T-beam bolted to track.

Top pivot bracket: Steel fabrication designed to absorb tie rod pull force and equipped with pivot assembly to allow boom rotation. Bracket bolted to supporting structure and connected to tie rod suspending boom. Bracket consists of steel channel, pivoting clevis, and tie rod clevis.

Beam bracket: Steel fabrication designed to connect tie rod to boom. Bracket consists of tie rod clevis and channel bolted to top flange of boom.

Bottom bracket: Steel fabrication designed to absorb downward and compressive boom forces, allow boom rotation, and resist boom drift. Bracket consists of a channel bolted to supporting structure and rotating clevis with boom connector plates.

Tie rod: Single, right-hand threaded at each end, ASTM A36 steel, 1 inch diameter rod.

Hoist trolley: Rigid-body trolley designed to ride inside enclosed track and carry hoist and load. Articulating trolleys are not acceptable.

Construction: Two-piece stamped steel body with two wheels each side and tapered clevis positioning hoist hook at center of trolley so load weight is evenly distributed to all four trolley wheels. Provide removable clevis pin of type and size determined by manufacture for specified capacity. Trolleys with non-removable clevis pins are not acceptable. Holes provided in body for mechanical connections.

Wheels: Four, removable, self-centering wheels with sealed lifetime lubricated bearings and tapered 2 degrees to match track profile. Non removable or non-tapered wheels are not acceptable.

Drop lugs: Provide on both sides of trolley to limit trolley drop in the event of wheel, axle, or load bar failure.

Designed for easy attachment of peripherals.

10.

** NOTE TO SPECIFIER ** Delete if not required.

Free Standing, Manually Operated, Articulated Arm Jib Crane: Crane shall consist of free standing mast requiring only foundation support and articulating assembly consisting of 360 degree pivoting boom with 360 degree rotating arm allowing loads to be rotated close to mast and positioned around an obstruction or through a door opening.

Acceptable Manufacturer and Model:

Model No. AJ360-F as manufactured by Gorbel, Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Mast: Stationary steel pipe, perpendicular to boom/arm assembly. Equip mast with:

Hexagonal steel base plate welded to mast for anchoring crane to concrete foundation. Weld triangular, full-web gusset plates to mast and base plate for stability and reinforcement. Cranes with open gussets or base plates made from rings and subject to warping are not acceptable.

Circular steel top plate to receive boom/arm assembly.

Articulating boom/arm assembly: Fabricate boom and arm from rectangular steel tubes connected with pivot joint.

Equip inside boom end with steel pipe pivot assembly with circular steel plate for attachment to mast and reinforced with gussets.

Equip arm outside end with steel plate clevis with 1-1/2 inches (38 mm) diameter hole to receive lifting device.

Provide pivot joints with friction brake bolts for adjusting boom and arm rotation.

** NOTE TO SPECIFIER ** Delete if not required.

Manually Operated, Wall Mounted Jib Crane with Articulating Arm: Crane shall consist of wall mounted cantilevered mast and articulating assembly consisting of 200 degree pivoting boom with 360 degree rotating arm allowing loads to be rotated close to mast and positioned around an obstruction and through a door opening.

Acceptable Manufacturer and Model:

Model No. AJ200 as manufactured by Gorbel, Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Mast: Vertical, rectangular steel tube perpendicular to boom/arm assembly and parallel to crane rotation axis. Provide corner web gusset for mast boom joint.

Articulating boom/arm assembly: Fabricate boom and arm from rectangular steel tubes connected with pivot joint.

Factory weld to mast.

Equip arm outside end with steel plate clevis with 1-1/2 inches (38 mm) diameter hole to receive lifting device.

Provide boom/arm pivot joint with friction brake bolts for adjusting boom and arm rotation.

Two mounting brackets: Designed to anchor mast to support structure, allow boom rotation, and resist drift. Load-carrying parts will be double shear and no bolt stress will exceed 10,000 psi (69 MPa). Brackets with tension welds are not acceptable. Bracket consists of:

Formed channel to be bolted to support structure and equipped with pivot pin and thrust washer.

Fabricated I bracket to be welded to mast and joined to formed channel with pivot pin. Provide with oil-impregnated bronze bushings and field lubricated grease fitting.

** NOTE TO SPECIFIER ** Delete if not required.

Ceiling Mounted, Manually Operated, Jib Crane with Articulating Arm: Crane shall consist of head mounting assembly and articulating assembly consisting of 360 degree pivoting boom with 360 degree rotating arm allowing loads to be rotated close to ceiling mount and positioned around an obstruction and through a door opening.

Acceptable Manufacturer and Model:

Model No. AJ360-C as manufactured by Gorbel, Inc.

Construction: Fabricate from ASTM A36 steel sections with finished ends and surfaces.

Head mounting assembly: Circular steel base plate welded to steel pipe pivot factory installed on steel boom/arm assembly.

Weld triangular, full-web gusset plates to pipe and base plate for stability and reinforcement. Cranes with open gussets or base plates made from rings and subject to warping are not acceptable.

Pre-drill base plate with bolt holes anchorage to overhead support.

Articulating boom/arm assembly: Fabricate boom and arm from rectangular steel tubes connected with pivot joint.