section 14611 monorail hoist and trolley

MONORAIL HOIST AND

TROLLEY

DECEMBER 2014 PWS CONTRACT NO. 13-40UTIL 14611-1

SECTION 14611

MONORAIL HOIST AND TROLLEY

PART 1 -- GENERAL

1.01 DESCRIPTION

A. SCOPE:

This Section specifies single girder monorail system complete with monorail beam, hoist,

trolley, and associated drive units and controls for installation in the Lift Station.

B. TYPE:

Trolley shall be a four-wheel type and travel on the bottom flange of a monorail beam,

with underhung heavy-duty wire rope hoist. Monorail system shall be equipped for electric lift

and travel, with pendant control. All motor controller drives shall be adjustable speed type.

C. EQUIPMENT LIST:

Equipment numbers are as follows:

Item Equipment No.

Lift Station Monorail & Hoist MME 3110

D. PERFORMANCE AND DESIGN REQUIREMENTS:

Monorail system will be used to lift and maintain the lift pump motors and related

components for occasional maintenance.

Monorail system will be installed inside the Lift Station motor room for the lift pumps.

Environmental conditions are described in Section 01800.

Electrical equipment, supports, and anchorage shall be designed and installed in

accordance with the seismic design requirements specified in Section 01900.

Except as noted, all equipment provided under this Section shall be suitable for Class A,

L2, N1 service as defined by CMAA standards. A heavy-duty hoist shall be suspended from the

trolley.

Operating and dimensional data are specified in Paragraph 14611-1.01E.

MONORAIL HOIST AND

TROLLEY

14611-2 PWS CONTRACT NO. 13-40UTIL DECEMBER 2014

A vertical impact allowance shall be included in design calculations for hoist, trolley and

monorail. The impact allowance shall be ½ percent of the rated load for each foot per minute of

hoisting speed with a minimum allowance of 15 percent and a maximum allowance of 50

percent.

The Contractor shall examine the drawings for interferences and obstructions which

might impose additional limitations upon the equipment.

E. OPERATING AND DIMENSIONAL DATA:

Item Value

Rated capacity, tons 2

Runway length, feet-inches 81’-0”

Trolley type underhung

Hoist type wire rope

Elevation of hook in highest position, minimum, feet 46.00 a

Elevations within hook reach, feet:

Operating floor elevation 32.00

Speeds, fpm, infinitely variable: b

Hoist 2.5 to 12.5

Trolley 1.5 to 50

Motors c per CMAA and HMI Duty

Class Notes:

a. Actual hook position shall be the elevation required to lift and move the Lift Pump motors

provided between a flat bed truck and the installed locations.

b. Motors shall be controlled by adjustable frequency drives.

c. See Section 11060.

1.02 QUALITY ASSURANCE

A. REFERENCE STANDARDS:

This Section incorporates by reference the latest revisions of the following documents in

effect at the time of Advertisement for Bids or Invitation to Bid (or on the effective date of the

Agreement if there were no Bids). They are part of this Section. In case of conflict between the

requirements of this Section and the listed documents, the Contractor shall point out the conflict

to the Construction Manager; lacking a definitive answer otherwise, the requirements of the

Contract Specifications shall prevail.

MONORAIL HOIST AND

TROLLEY


Reference Title

AISC Specifications for the Design, Fabrication, and Erection

of Structural Steel for Buildings

AGMA American Gear Manufacturers Association

ASME B30.10 Hooks

ASME B30.11 Monorails and Underhung Cranes

ASME B30.16 Overhead Hoists (Underhung)

ASME HST-4 Performance Standard for Electric Wire Rope Hoists

ASTM A36 Standard Specification for Carbon Structural Steel

HMI Hoist Manufacturer’s Institute

CMAA 70 Specifications for Top Running Bridge & Gantry Type

Multiple Girder Electric Overhead Traveling Cranes

CMAA 74 Specification for Top Running and Under Running

Single Girder Electric Overhead Travelling Cranes

Utilizing Under Running Trolley Hoist

NFPA 70 National Electric Code

ASME American Society of Mechanical Engineers

CMAA Crane Manufacturers Association of America

NEMA National Electrical Manufacturers Association

OSHA Occupational Safety and Health Administration

UL Underwriters Laboratories

All equipment furnished under this Section shall comply in all respects with the

requirements of OSHA, the standards of the Crane Manufacturer’s Association of America

(CMAA), the Hoist Manufacturer’s Institute (HMI), ASME HST-4 Performance Standards for

Electric Wire Rope Hoists, and the National Electric Code (NFPA 70).

B. MANUFACTURER’S QUALIFICATIONS:

The monorail system manufacturer shall be one who is regularly engaged in the business

of designing, building, and repairing monorails and hoists of the type specified in this section.

All monorail system components furnished for this contract shall be designed, coordinated and

supplied by a single manufacturer.

MONORAIL HOIST AND

TROLLEY


C. UNIT RESPONSIBILITY:

The Contractor shall assign unit responsibility as specified in paragraph 11000-1.02C to

the monorail system manufacturer for all equipment specified in this Section. The monorail

system manufacturer is the unit responsibility manufacturer and has unit responsibility, as

defined in Section 11000, for the equipment specified in this Section. A completed and signed

certificate of unit responsibility (Form 11000-C, Section 01999) shall be submitted as specified

herein.

D. FACTORY TESTS:

Manufacturer shall test the equipment in accordance with its current Quality Assurance

program, industry standards and federal regulations prior to shipment of the equipment.

Certification of the factory test results shall be provided as specified herein.

1.03 SUBMITTALS

Submittals shall comply with the requirements of Section 01300. Submittals shall

include the following information.

1. A copy of this specification section, with addendum updates included, and

all referenced and applicable sections, with addendum updates included,

with each paragraph check-marked to indicate specification compliance or

marked to indicate requested deviations from specification requirements.

Check marks (�) shall denote full compliance with a paragraph as a

whole. If deviations from the specifications are indicated and, therefore

requested by the Contractor, each deviation shall be underlined and

denoted by a number in the margin to the right of the identified paragraph.

The remaining portions of the paragraph not underlined will signify

compliance on the part of the Contractor with the specifications. The

submittal shall be accompanied by a detailed, written justification for each

deviation. Failure to include a copy of the marked-up specification

sections, along with justification(s) for any requested deviations to the

specification requirements, with the submittal shall be sufficient cause for

rejection of the entire submittal with no further consideration.

2. Completed Certificate of Unit Responsibility attesting that the Contractor

has assigned, and that the manufacturer accepts unit responsibility in

accordance with the requirements of this Section and Paragraph 11000-

1.02C. No other submittal material will be reviewed until the certificate

has been received and found to be in conformance with these

requirements.

3. Manufacturer's catalog data confirming rated capacity, equipment speeds,

motor horsepower, electrical requirements, and component sizes and

dimensions.

MONORAIL HOIST AND

TROLLEY


4. Shop drawings showing physical details, dimensions of the equipment,

details of construction for monorail installation, and all information listed

in Paragraphs 14630-1.01D and -E.

5. Monorail beam and track design calculations. Seismic calculations.

Loads to the building frame structure shall be provided in calculations.

Calculations shall be stamped by a California registered structural or civil

engineer.

6. Anchor bolt calculations in accordance with Section 05501.

7. Motor data.

8. Electrical diagrams and schematics.

PART 2 -- PRODUCTS

2.01 ACCEPTABLE PRODUCTS

Monorail hoist shall be P & H, Yale Lift Tech’s Shaw-Box product series, CraneVeyor

Corp, or equal, modified to provide the specified features. All products specified herein shall be

provided by a single supplier.

2.02 MATERIALS

Component Material

Monorail beam and trolley Steel, ASTM A36

Bottom tees Manganese steel, 225 Brinell hardness

Hoist gearing, trolley wheels, hook

Wire rope

Steel

Steel

2.03 EQUIPMENT FEATURES

A. MONORAIL BEAMS:

Monorail track shall be straight and level and specially designed for this application. The

monorail beam shall be designed for stresses not exceeding 60 percent of material’s yield

strength and a maximum vertical deflection of 1/450 of span. Lower load-carrying flange shall

have a minimum 3-1/4-inch width and a raised running or tread wear. Couplings shall be web

type at rail joints with maximum gap at rail ends of load-carrying flange of 1/16-inch, and 3/16-

inch at free ends. Monorail shall be provided with bolted end stops and impact absorbing

bumpers at rail ends.

MONORAIL HOIST AND

TROLLEY


B. RAIL SUSPENSION:

Provide anchor bolts, clamps, hanger rods, and fittings to support live, dead, vertical

impact, and lateral load of hoist, trolley, controls, motors, and track. Hanger rods, if provided,

shall be high carbon, cold-rolled alloy steel with unified national fine, Class 2 screw thread ends.

Vertical adjustment shall be 1-inch adjustable. Provide lateral bracing as recommended by

manufacturer.

C. TROLLEY:

Trolley frame shall be welded steel, cast steel, or a combination thereof. The trolley shall

be motorized and driven by an electric motor through a gear reduction unit and drive shaft.

Trolley motor and drive shall be as specified in Paragraph 14611-2.03F. The motor shall be

provided with cushion start and controller for smooth travel and load control. Roller assembly

stabilizers shall be provided to prevent tipping during load pickup. Trolley wheels shall be steel.

The wheel tread shall be accurately machined to assure concentricity of axle and tread, and

hardened to 280 Brinell minimum. Wheels shall be mounted on permanently lubricated anti-

friction bearings. Bearings shall have a minimum B-10 life of 10,000 hours. Trolley brakes

shall be suitable for the service class and rated torque capacities as specified in ASME B30.11.

D. WIRE ROPE HOIST:

The hoist shall be double reeved. The hoisting drum shall be grooved and designed for

one layer of wire rope, with at least two (2) full turns of rope to remain on the drum at the lowest

hook position. Hoist gearing shall be heat-treated hardened steel, running in an oil bath. Gear

bearings shall be the oil-lubricated anti-friction type, and all bearings shall be designed for a

Class M2 (20,000 hour) bearing life.

A gravity type and upper and lower geared limit switch shall be provided to assure safe

operation and positive stopping under all conditions. The limit switch shall automatically stop

the motor and engage the hoist brake when the hook reaches either the upper or lower limit of

travel. The hoist shall be provided with a load limiting device adjusted not to exceed 100 percent

of rated capacity.

The load hook shall be mounted on ball thrust bearings to swivel without twisting the

wire rope. The lifting tackle shall be of the safety type, and the hook shall be of hardened steel

equipped with a safety catch. Sheaves shall be properly guarded and shall be heavy pattern, deep

flanged, and properly grooved. Sheaves shall either be bronze bushed, or fitted with ball

bearings and supported on fixed pins. Wire rope shall be improved plow steel with steel center

complete with swaged fittings. Wire rope shall be grease impregnated. The rated capacity load

divided by the number of parts of hoisting rope shall not exceed 20 percent of the published

breaking strength of the rope.

Hoist motor brake shall be magnetically operated disc type or shoe type, mounted on the

extended pinion shaft, and designed for a torque rating to 150 percent of the motor full load

torque. Brake shall be equally effective in both directions of motor rotation and of sufficient size

MONORAIL HOIST AND

TROLLEY


to stop motor and hold rated capacity load. Brake shall be set automatically when current is not

flowing to the motor. A second “load brake” shall be included and applied automatically on

lowering and require the motor to drive the load down. Brake shall be self-adjusting to allow for

normal wear of the brake lining. Hoist motor shall be as specified in Paragraph 14611-2.03F.

The Contractor shall furnish and install an identification plate on the hoist housing. The

identification plate shall be of clearly legible permanent lettering giving the manufacturer's

name, model number, rated capacity, and other essential information. In addition, the

identification plate shall display the equipment number for the hoist that is identified

hereinbefore.

F. MOTORS:

Motors shall be 1750 rpm, TEFC, 30-minute-duty-cycle, rated for inverter duty, comply

with CMAA No. 70 for AC Motors, and shall be suitable for the class and type of crane service

specified in Paragraphs 14630-1.01D and -E, and also herein. Hoist and trolley motion shall be

through adjustable frequency drive operation. All motors shall be provided with lifetime

lubricated anti-friction bearings. The hoist motor bearings shall be designed for a Class M2

(20,000 hour) bearing life.

Controllers shall be capable of providing the control speed ranges specified in Paragraph

14611-1.01E. Controller shall provide soft start/soft stop (dynamic braking), acceleration

control, phase loss protection, user programming, and ability to store and retrieve fault history.

Trolley motor shall drive the trolley through a gear reducer. Gear reducer shall be

enclosed heavy-duty helical, or spur gear type, of a self-lubricating design, with anti-friction

bearings. Brakes shall be solenoid actuated.

G. ELECTRIFICATION AND CONTROLS:

All electrical and control equipment shall comply with the requirements of Division 16.

The crane manufacturer shall furnish and mount all electrical equipment on the crane

including motors, adjustable frequency drives, controls, conduit, and wiring. Trolley conductors

may be removed for shipment. All wiring on the crane shall be furnished, installed, and

terminated by the crane manufacturer, as far as practical for shipment.

The crane manufacturer shall also provide a NEMA 4X main control panel and a NEMA

4X push-button pendant controller suspended from the trolley and capable of controlling all

crane motions (hoist and trolley). The main control panel shall include: individual disconnects

for hoist and trolley; reversing controller for hoist and trolley; thermal overload relays; control

transformers; control relays; power terminal blocks and control terminal blocks all prewired, as

required for a complete system and fully operational via a single 480V, 3-phase 60 Hz power

feed. The top of the pendant shall be 4 feet above the operating floor. Hoist and trolley motion

control shall be adjustable speed actuated from the pendant push button station suspended from

the movable trolley. Both the main control panel and the pendant controller shall be equipped

MONORAIL HOIST AND

TROLLEY


with an emergency stop pushbutton to disable all crane motions. All controls shall be clearly

marked with etched or engraved nameplates.

The Contractor shall provide the power feed and a NEMA 4X lockable local main

disconnect switch of suitable rating for the crane system accessible from the operating floor.

Electrification of the trolley and hoist shall be by flat insulated festooned cable supported

in an enclosed track. Conductors shall be complete with all necessary insulation, supports and

appurtenances as required. All other wiring of the crane shall be in rigid or flexible conduit and

in accordance with National Electrical Code and complying with Fire Underwriters

specifications. When a crane is shipped knocked down, the wiring shall terminate in approved

terminal boxes and the wire ends shall be provided with permanent marking tags.

2.04 PAINTING

Contact wheel and rail surfaces shall not be coated. All other metal surfaces shall receive

proper metal preparation and cleaning prior to application of protective coating. Finish color

shall be safety yellow except for trolley, which shall be a different color (e.g., blue) for good

positioning contrast. Coating system shall be E-2 epoxy or EU-1 epoxy polyurethane as

specified in Section 09900, or equal coating system suited for a corrosive environment. All

components shall be factory coated, tested, and defects corrected prior to shipment. Field touch-

up will be permitted for minor scratches but defective coatings shall be corrected in the shop.

Manufacturer’s standard epoxy finish is acceptable for hoist.

2.05 PRODUCT DATA

The following information shall be provided in accordance with Section 01300:

1. Applicable operations and maintenance information as specified in

Section 01730.

2. Factory test certification.

3. Installation Certification Form 11000-A specified in Paragraph

14611-3.05.

4. Training Certification Form 11000-B specified in Paragraph 14611-3.05.

PART 3 -- EXECUTION

3.01 INSTALLATION

The monorail, trolley and hoist shall be installed at the location shown and in accordance

with the manufacturer’s recommendations, to the tolerances recommended by CMAA, and under

the supervision of the manufacturer’s authorized field representative.

MONORAIL HOIST AND

TROLLEY


3.02 INSPECTION AND TESTING

After completion of the installation, the Contractor shall test all hoist and crane

equipment under load in the presence of the manufacturer's field representative, who shall certify

in writing that the equipment meets all applicable standards and specified performance

requirements. Form 11000-A, specified in Section 11000, General Requirements for Mechanical

Equipment, shall be completed and submitted.

As a minimum, testing shall be by operating the equipment through a complete lift and

lowering cycle and through a complete travel of the trolley to determine that the equipment

performs smoothly and safely without failure.

The tests shall be carried out with the hoisting equipment loaded as near to the specified

capacity as possible. Any defects shall be corrected or replaced immediately by the Contractor

and at no expense to the Owner.

3.03 USE BY CONTRACTOR

Any hoist and crane equipment used by the CONTRACTOR shall be repaired, repainted

and otherwise refurbished to like-new condition prior to its acceptance. After equipment

refurbishment, the manufacturer’s field representative shall re-inspect and re-test the crane

unloaded, and certify in writing that the equipment meets all applicable standards and specified

performance requirements. The certification shall be submitted. The CONTRACTOR assumes

all responsibility for operation and maintenance until the equipment has been accepted.

3.04 WARRANTY

A written, one year warranty for equipment shall be provided. Warranty shall include

parts and labor for any repair work.

3.05 TRAINING

Furnish the services of a factory trained representative for one (1) eight hour man-day for

instruction of the Owner’s personnel in the proper operation and maintenance of the equipment.

Training shall be as specified in Section 01664, and shall be certified on Form 11000-B,

specified in Section 01999.

** END OF SECTION **

MONORAIL HOIST AND

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THIS PAGE INTENTIONALLY LEFT BLANK

BRIDGE CRANE

AND HOISTS


SECTION 14630

BRIDGE CRANES AND HOISTS

PART 1 -- GENERAL

1.01 DESCRIPTION

A. SCOPE:

This Section specifies an electrically operated bridge crane system complete with hoist,

trolley, bridge, end trucks, and associated drive units and controls, for installation in the Lift

Station.

B. TYPE:

Bridge crane shall be single girder top-running type mounted on individual drive end

trucks designed to travel on ASCE runway rails, with underhung heavy-duty wire rope hoist and

four-wheel trolley, equipped for electric lift and travel in both directions, with pendant control.

All motor controller drives shall be adjustable speed type.

C. EQUIPMENT LIST:

Equipment numbers are as follows:

Item Equipment No.

Lift Station Bridge Crane CRN 3120

D. PERFORMANCE AND DESIGN REQUIREMENTS:

Bridge crane will be used to lift and maintain process equipment and related components

for occasional maintenance.

Bridge crane will be installed inside the Lift Station motor room for the force main

pumps.

Environmental conditions are described in Section 01800.

Electrical equipment, supports, and anchorage shall be designed and installed in

accordance with the seismic design requirements specified in Section 01900.

Except as noted, bridge crane shall be CMAA Class A. Bridge drive shall be CMAA

Type A4. A heavy-duty hoist shall be suspended from the trolley.

BRIDGE CRANE

AND HOISTS


Operating and dimensional data are specified in Paragraph 14630-1.01E.

Runway beams, rails, and bridge beams shall be as specified in this Section. Runway

beams shall be complete with connections to the building structural system, splices, and crane

stops, and shall be furnished by the crane manufacturer. Runway beam minimum size is shown

on the Drawings. All beams shall be designed by a structural engineer registered in the State of

California.

Hook approach distances shall be as shown on the Drawings.

Vertical Impact: An impact allowance shall be included in design calculations for

trolleys, cranes and runways. The impact allowance shall be ½ percent of the rated load for each

foot per minute of hoisting speed with a minimum allowance of 15 percent and a maximum

allowance of 50 percent.

The Contractor shall examine the drawings for interferences and obstructions which

might impose additional limitations upon the equipment.

E. OPERATING AND DIMENSIONAL DATA:

Item Value

Rated capacity, tons 3

Runway span, feet-inches 25’-9”

Runway length, feet-inches 81’-0”

Bridge type single girder, top running

Trolley type underhung

Hoist type wire rope

Elevation of hook in highest position, minimum, feet 46.00 a

Elevations within hook reach, feet:

Operating floor elevation 32.00

Ground floor elevation 12.00

Speeds, fpm, infinitely variable: b

Hoist 2.5 to 12.5

Bridge 2.5 to 75

Trolley 1.5 to 50

Motors c per CMAA and HMI Duty

Class Notes:

a. Actual hook position shall be the elevation required to lift and move pumping equipment provided

between a flat bed truck and the installed locations (Force Main pump motors) or ground floor (all

pumps).

b. Motors shall be controlled by adjustable frequency drives.

c. See Section 11060.

BRIDGE CRANE

AND HOISTS


1.02 QUALITY ASSURANCE

A. REFERENCE STANDARDS:

This Section incorporates by reference the latest revisions of the following documents in

effect at the time of Advertisement for Bids or Invitation to Bid (or on the effective date of the

Agreement if there were no Bids). They are part of this Section. In case of conflict between the

requirements of this Section and the listed documents, the Contractor shall point out the conflict

to the Construction Manager; lacking a definitive answer otherwise, the requirements of the

Contract Specifications shall prevail.

Reference Title

AISC Specifications for the Design, Fabrication, and Erection of

Structural Steel for Buildings

AGMA American Gear Manufacturers Association

ASME B30.10 Hooks

ASME B30.11 Monorails and Underhung Cranes

ASME B30.16 Overhead Hoists (Underhung)

ASME B30.17 Overhead and Gantry Cranes (Top Running Bridge,

Single Girder, Underhung Hoist)

ASME HST-4 Performance Standard for Electric Wire Rope Hoists

ASTM A36 Standard Specification for Carbon Structural Steel

ASTM A992 Standard Specification for Structural Steel Shapes

HMI Hoist Manufacturer’s Institute

CMAA 70 Specifications for Top Running Bridge & Gantry Type

Multiple Girder Electric Overhead Traveling Cranes

CMAA 74 Specification for Top Running and Under Running Single

Girder Electric Overhead Travelling Cranes Utilizing

Under Running Trolley Hoist

NFPA 70 National Electric Code

ASME American Society of Mechanical Engineers

CMAA Crane Manufacturers Association of America

NEMA National Electrical Manufacturers Association

OSHA Occupational Safety and Health Administration

UL Underwriters Laboratories

BRIDGE CRANE

AND HOISTS


All equipment furnished under this Section shall comply in all respects with the

requirements of OSHA, the standards of the Crane Manufacturer’s Association of America

(CMAA), the Hoist Manufacturer’s Institute (HMI), ANSI/ASME HST-4 Performance

Standards for Electric Wire Rope Hoists, and the National Electric Code (NFPA 70).

B. UNIT RESPONSIBILITY:

The Contractor shall assign unit responsibility as specified in paragraph 11000-1.02C to

the bridge crane manufacturer for all equipment specified in this Section. The crane

manufacturer is the unit responsibility manufacturer and has unit responsibility, as defined in

Section 11000, for the equipment specified in this Section. A completed and signed certificate of

unit responsibility (Form 11000-C, Section 01999) shall be submitted as specified herein.

C. FACTORY TESTS:

Manufacturer shall test the equipment in accordance with industry standards and federal

regulations prior to shipment of the equipment. Crane, trolley and hoist shall be completely

assembled and no load run tested in the factory prior to shipment to the job site. Crane shall be

disassembled to the least amount possible for shipment. Certification of the factory test results

shall be provided as specified herein.

1.03 SUBMITTALS

Submittals shall comply with the requirements of Section 01300. Submittals shall

include the following information.

1. A copy of this specification section, with addendum updates included, and

all referenced and applicable sections, with addendum updates included,

with each paragraph check-marked to indicate specification compliance or

marked to indicate requested deviations from specification requirements.

Check marks (�) shall denote full compliance with a paragraph as a

whole. If deviations from the specifications are indicated and, therefore

requested by the Contractor, each deviation shall be underlined and

denoted by a number in the margin to the right of the identified paragraph.

The remaining portions of the paragraph not underlined will signify

compliance on the part of the Contractor with the specifications. The

submittal shall be accompanied by a detailed, written justification for each

deviation. Failure to include a copy of the marked-up specification

sections, along with justification(s) for any requested deviations to the

specification requirements, with the submittal shall be sufficient cause for

rejection of the entire submittal with no further consideration.

BRIDGE CRANE

AND HOISTS


2. Completed Certificate of Unit Responsibility attesting that the Contractor

has assigned, and that the manufacturer accepts unit responsibility in

accordance with the requirements of this Section and Paragraph 11000-

1.02C. No other submittal material will be reviewed until the certificate

has been received and found to be in conformance with these

requirements.

3. Manufacturer's catalog data confirming rated capacity, equipment speeds,

motor horsepower, electrical requirements, and component sizes and

dimensions.

4. Bridge crane shop drawings showing physical details, dimensions of the

bridge crane and hoist equipment, details of construction for crane

installation, and all information listed in Paragraphs 14630-1.01D and -E.

5. Runway beam design calculations. Loads to the building frame structure

shall be provided in calculations. Calculations shall be stamped by a

California registered structural or civil engineer.

6. Anchor bolt calculations in accordance with Section 05501.

7. Motor data.

8. Electrical diagrams and schematics.

PART 2 -- PRODUCTS

2.01 ACCEPTABLE PRODUCTS

Bridge cranes and hoists shall be P & H, Acco-Wright, Stahl, Demag, CraneVeyor Corp,

or equal, modified to provide the specified features. All products specified herein shall be

provided by a single supplier.

2.02 MATERIALS

Component Material

Runway beams Steel, ASTM A992

Bridge beams and trolley Steel, ASTM A36

Hoist gearing, trolley wheels, end truck wheels, hook

Wire rope

Steel

Steel

BRIDGE CRANE

AND HOISTS


2.03 EQUIPMENT FEATURES

A. RUNWAY BEAMS AND RAILS:

Runways shall be straight, parallel, and level and specially designed for this application.

At full load, the runway beams shall be designed for a maximum deflection of 1/600 of span.

Runway rails shall be selected for proper loading, and shall be ASCE 30# minimum. Runways

shall be provided with bolted end stops.

B. RUNWAY SUPPORTS:

Anchor bolts and clamps shall be provided to secure runway beams and rails. Provide

lateral bracing to walls for runways as recommended by manufacturer.

C. BRIDGE BEAM:

The crane bridge assembly shall be a top-running, single girder bridge beam, electrically

driven. The bridge beam shall be rigidly attached to end trucks and serve as the hoist runway.

Permanent stops shall be provided to prevent trolley overrun. At full load, the bridge beam shall

be designed for a maximum deflection of 1/800 of span.

D. END TRUCKS:

The bridge crane end trucks shall carry the rated load between the end truck wheels while

the rated load is lifted at one end of the crane bridge. End truck wheel bases shall be 1/8 of the

span. The crane and trucks shall contain diaphragm members welded to truck frames to maintain

alignment and distribute truck loads on the inner and outer truck members.

An impact absorbing rubber bumper shall be mounted on each end of the end trucks.

Rail sweeps shall be provided. Safety lugs shall be provided to limit drop of the end trucks to 1

inch or less in the event of wheel or axle failure.

Wheel bearings shall be roller type with life time lubrication, fitted with seals to exclude

dust and moisture, and provided with a suitable reservoir of lubricant to eliminate the need for

field lubrication.

Crane wheels shall be steel with flat tread surfaces hardened to 280 Brinell minimum.

Wheel treads shall be smooth, true, and uniform within 0.01-inch tread diameter on all wheels.

Wheel mounting shall be designed so that axles and wheels can be removed without disturbing

other truck elements of their alignment.

E. BRIDGE DRIVE:

Bridge drive shall be CMAA Type A4. Bridge motors and drives shall be as specified in

Paragraph 14630-2.03H. The motors shall be provided with cushion start and controller for

smooth travel and load control. The motors shall drive the bridge through gear reducers. Gear

BRIDGE CRANE

AND HOISTS


reducers shall be enclosed heavy-duty helical, or spur gear type, of a self-lubricating design, with

anti-friction bearings. The drive shafts shall provide synchronous drive from the gear reduction

units to both end trucks. Both motorized trolley wheels shall be driven simultaneously. Brakes

shall be solenoid actuated. The crane drive shall include integrally mounted spring set

electrically released ac or dc rectified disc brake.

F. TROLLEY:

The trolley shall be a four-wheel motorized assembly designed for under running hoist

application. The trolley shall be framed by a structural shape welded into a stable assembly for

proper wheel and bearing alignment. Trolley bumpers shall be provided. The trolley assembly

shall be supported by trolley wheels with flat tread surfaces. The wheel tread shall be accurately

machined to assure concentricity of axle and tread, and hardened to 280 Brinell minimum.

Wheels shall be mounted on permanently lubricated anti-friction bearings. Bearings must have a

minimum B-10 life of 10,000 hours. Trolley motor and drive shall be as specified in Paragraph

14630-2.03H. The motor shall be provided with cushion start and controller for smooth travel

and load control. The motor shall drive the trolley through a gear reducer. Gear reducer shall be

enclosed heavy-duty helical, or spur gear type, of a self-lubricating design, with anti-friction

bearings. Brakes shall be solenoid actuated. Trolley drive shall include integrally mounted

spring set electrically released ac or dc rectified disc brake.

G. HOIST:

The hoist shall be double reeved. The hoisting drum shall be grooved and designed for

one layer of wire rope, with at least two (2) full turns of rope to remain on the drum at the lowest

hook position. Hoist gearing shall be heat-treated hardened steel, running in an oil bath. Gear

bearings shall be the oil-lubricated anti-friction type, and all bearings shall be designed for a

Class M2 (20,000 hour) bearing life.

A gravity type and upper and lower geared limit switch shall be provided to assure safe

operation and positive stopping under all conditions. The hoist shall be provided with a geared

limit switch to automatically stop the motor and engage the hoist brake when the hook reaches

either the upper or lower limit of travel. The hoist shall be provided with a load limiting device

adjusted not to exceed 100 percent of rated capacity.

The load hook shall be mounted on ball thrust bearings to swivel without twisting the

wire rope. The load hook shall be of the safety type, and the hook shall be of hardened steel

equipped with a safety latch. Sheaves shall be properly guarded and shall be heavy pattern, deep

flanged, and properly grooved. Sheaves shall be fitted with ball bearings and supported on fixed

pins. Wire rope shall be improved plow steel with steel center complete with swaged fittings.

Wire rope shall be grease impregnated. The rated capacity load divided by the number of parts

of hoisting rope shall not exceed 20 percent of the published breaking strength of the rope.

Hoist motor brake shall be magnetically operated disc type or shoe type, mounted on the

extended pinion shaft, and designed for a torque rating to 150 percent of the motor full load

torque. Brake shall be equally effective in both directions of motor rotation and of sufficient size

BRIDGE CRANE

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to stop motor and hold rated capacity load. Brake shall be set automatically when current is not

flowing to the motor. A second “load brake” shall be included and applied automatically on

lowering and require the motor to drive the load down. Brake shall be self-adjusting to allow for

normal wear of the brake lining. Hoist motor shall be as specified in Paragraph 14630-2.03H.

The Contractor shall furnish and install an identification plate on the hoist housing. The

identification plate shall be of clearly legible permanent lettering giving the manufacturer's

name, model number, rated capacity, and other essential information. In addition, the

identification plate shall display the equipment number for the hoist that is identified

hereinbefore.

H. MOTORS AND CONTROLLERS:

Motors shall be 1750 rpm, TEFC, 30-minute-duty-cycle, rated for inverter duty, comply

with CMAA No. 70 for AC Motors, and shall be suitable for the class and type of crane service

specified in Paragraphs 14630-1.01D and -E, and also herein. Hoist, trolley and bridge motion

shall be through adjustable frequency drive operation. All motors shall be provided with lifetime

lubricated anti-friction bearings. The hoist motor bearings shall be designed for a Class M2

(20,000 hour) bearing life.

Controllers shall be capable of providing the control speed ranges specified in Paragraph

14630-1.01E. Controllers shall provide soft start/soft stop (dynamic braking), acceleration

control, phase loss protection, user programming, and ability to store and retrieve fault history.

I. ELECTRIFICATION AND CONTROLS:

All electrical and control equipment shall comply with the requirements of Division 16.

The crane manufacturer shall furnish and mount all electrical equipment on the crane

including motors, adjustable frequency drives, controls, conduit, and wiring. Bridge conductors

may be removed for shipment. All wiring on the crane shall be furnished, installed, and

terminated by the crane manufacturer, as far as practical for shipment.

The crane manufacturer shall also provide a NEMA 4X main control panel and a NEMA

4X push-button pendant controller suspended from the trolley and capable of controlling all

crane motions (hoist, bridge, and trolley). The main control panel shall include: service

disconnect for mainline power feeding the panel; reversing controller for hoist, bridge, and

trolley; thermal overload relays; control transformers; control relays; power terminal blocks and

control terminal blocks all prewired, as required for a complete system and fully operational via

a single 480V, 3-phase, 60 Hz power feed. A torque reel shall be supplied to allow easy

adjustment of the pendant height for hoist use at elevations shown in Paragraph 14630-1.01E.

Hoist, bridge and trolley motion control shall be adjustable speed actuated from the pendant push

button station suspended from the movable trolley. The pendant controller shall be equipped

with an emergency stop pushbutton to disable all crane motions. All controls shall be clearly

marked with etched or engraved nameplates.

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The Contractor shall provide the power feed and a NEMA 4X lockable local main

disconnect switch of suitable rating for the crane system and accessible from the operating floor.

Electrification of the bridge shall be by enclosed bus bar conductors. Conductor bars

shall be stainless steel clad hard copper enclosed in insulation. Conductors shall be complete

with all necessary insulation, supports, and appurtenances, and shall meet the NFPA 70 (NEC)

requirements. Current collectors shall be the sliding noncopper bearing, carbon shoe type, with

adjustable spring tension arms for contact between bus bars and controls. Collector mechanism

components shall be aluminum, stainless steel, or other noncorrosive materials (excluding

plastic). Electrification of the trolley and hoist shall be by flat insulated festooned cable

supported in an enclosed track. Conductors shall be complete with all necessary insulation,

supports and appurtenances as required. All other wiring of the crane shall be in rigid or flexible

conduit and in accordance with National Electrical Code and complying with Fire Underwriters

specifications. When a crane is shipped knocked down, the wiring shall terminate in approved

terminal boxes and the wire ends shall be provided with permanent marking tags.

2.04 PAINTING

Contact wheel and rail surfaces shall not be coated. All other metal surfaces including

the runway beams shall receive proper metal preparation and cleaning prior to application of

protective coating. Finish color shall be safety yellow except for trolley, which shall be a

different color (e.g., blue) for good positioning contrast. Coating system shall be E-2 epoxy or

EU-1 epoxy polyurethane as specified in Section 09900, or equal coating system suited for a

corrosive environment. Runway rails shall be coated after installation. All other components

shall be factory coated, tested, and defects corrected prior to shipment. Field touch-up will be

permitted for minor scratches but defective coatings shall be corrected in the shop.

Manufacturer’s standard epoxy finish is acceptable for the hoist.

2.05 PRODUCT DATA

The following information shall be provided in accordance with Section 01300:

1. Applicable operations and maintenance information as specified in

Section 01730.

2. Factory test certification.

3. Installation Certification Form 11000-A specified in Paragraph

14630-3.02.

4. Training Certification Form 11000-B specified in Paragraph 14630-3.05.

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PART 3 -- EXECUTION

3.01 INSTALLATION

The runway rails, bridge crane, trolley, and hoist shall be installed at the location shown

and in accordance with the manufacturer’s recommendations, within the tolerances

recommended by CMAA, and under the supervision of the manufacturer’s authorized field

representative.

3.02 INSPECTION AND TESTING

After completion of the installation, the Contractor shall test all hoist and crane

equipment under load in the presence of the manufacturer's field representative, who shall certify

in writing that the equipment meets all applicable standards and specified performance

requirements. Form 11000-A, specified in Section 11000, General Requirements for Mechanical

Equipment, shall be completed and submitted.

As a minimum, testing shall be by operating the equipment through a complete lift and

lowering cycle and through a complete travel of the bridge and trolley to determine that the

equipment performs smoothly and safely without failure.

The tests shall be carried out with the hoisting equipment loaded as near to the specified

capacity as possible. Any defects shall be corrected or replaced immediately by the Contractor

and at no expense to the Owner.

3.03 USE BY CONTRACTOR

Any hoist and crane equipment used by the CONTRACTOR shall be repaired, repainted

and otherwise refurbished to like-new condition prior to its acceptance. After equipment

refurbishment, the manufacturer’s field representative shall re-inspect and re-test the crane

unloaded, and certify in writing that the equipment meets all applicable standards and specified

performance requirements. The certification shall be submitted. The CONTRACTOR assumes

all responsibility for operation and maintenance until the equipment has been accepted.

3.04 WARRANTY

A written, one year warranty for equipment shall be provided. Warranty shall include

parts and labor for any repair work.

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3.05 TRAINING

Furnish the services of a factory trained representative for one (1) eight hour man-day for

instruction of the Owner’s personnel in the proper operation and maintenance of the equipment.

Training shall be as specified in Section 01664, and shall be certified on Form 11000-B,

specified in Section 01999.

** END OF SECTION **

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section 14611 monorail hoist and trolley

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