412213 BRIDGE CRANES.doc

UNIT TRAINING EQUIPMENT SITE ADD/ALT

SECTION 412213 – BRIDGE CRANES

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes bridge cranes and hoisting equipment.

1. Detailed design of a completed crane system, including bridge, end trucks, trolley, hoists, cabling, controls, and all appurtenances specified hereinafter.

2. Shop drawings.

3. Fabrication of a complete crane.

4. Inspection and shop testing.

5. Documentation and schedules.

6. Runway beams and rail are part of the building steel package and are not included in this section, see Section 133419.

1.3

ACTION SUBMITTALS

A. Product Data: Include capacities, sizes, performances, operations, safety features, finishes, and similar information.

B. Shop Drawings:

1. Include plans, elevations, sections, and large-scale details for bridge crane system, coordination with building structure, relationships with other construction, and locations of equipment.

2. Indicate maximum dynamic and static loads imposed on building structure at points of support, and maximum and average power demands.

3. Wiring schematics shall ship with the crane.

1.4

CLOSEOUT SUBMITTALS

C. Operation and Maintenance Data: For bridge cranes and hoisting equipment to include in emergency, operation, and maintenance manuals.

1. Equipment function, normal operating characteristics, and limiting conditions.

2. Assembly, installation, alignment, and maintenance instructions.

3. Lubrication and maintenance instructions.

4. Guide to “troubleshooting”.

5. Parts list.

6. As-built drawing.

7. Test results.

1.5

QUALITY ASSURANCE

D. Installer Qualifications: Hoist manufacturer or an authorized representative who is trained and approved by manufacturer.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, and handle materials, components and equipment in manufacturer's protective packaging. Store materials, components, and equipment off of ground, under cover, and in a dry location.

1.7

COORDINATION

A. Coordinate loads and bridge and hoist requirements with the pre-engineered building supplier and the electrical contractor. Furnish installation instructions and deliver to Project site in time for installation.

1.8

WARRANTY

A. Manufacturer's Special Warranty: Manufacturer agrees to repair, restore, or replace bridge crane and hoist system work that fails in materials or workmanship within specified warranty period.

1. Failures include, but are not limited to, operation or control system failure, including excessive malfunctions; performances below specified ratings; excessive wear; unusual deterioration or aging of materials or finishes; unsafe conditions; need for excessive maintenance; abnormal noise or vibration; and similar unusual, unexpected, and unsatisfactory conditions.

2. Warranty Period: One year from the date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis-of-Design Product: Subject to compliance with requirements, provide an electric, wire rope hoist & bridge by R & M Spacemaster SX & Michigan Industrial Systems (Contact Doug Weber, Ph: 248.240.9004) or comparable product by one of the following:

1. Engineered Material Handling (EMH)

2. Konecranes, Inc.

3. Yale Hoists

2.2 PERFORMANCE REQUIREMENTS

B. Equipment furnished under this section shall comply in all respects with the requirements of the following standards.

1. OSHA

Occupational Safety and Health Administration

Part 1926.554 – Overhead Hoists

Part 1910.179 – Overhead and Gantry Cranes 2.

CMAA

Crane Manufacturer’s Association of America

Specifications for Top Running Bridge & Gantry Type Multiple

Girder Electric Overhead Traveling Cranes - No. 70 (2004)

3.

ANSI/

ASME

American National Standards Institute /

American Society of Mechanical Engineers

ANSI / ASME HST-4 - 1999 Performance Standard for Overhead Electric

Wire Rope Hoists

ANSI / ASME B30.2 - 2001 Overhead and Gantry Cranes

(Top Running Bridge, Single or Multiple Girder, Top Running Trolley Hoist)

4.

NEMA

National Electric Manufacturer’s Association

5.

NEC

National Electric Code – 2008

C. Contractor shall adhere to OSHA, state, and local safety guidelines, laws, rules, and regulations.

D. Long lead items (hoist, end trucks, drives and controls) will be ordered by contractor upon receipt of purchase order and credit approval. Steel will not be ordered until shop drawings and submittals have been approved by the Architect.

E. All electric equipment shall be UL, CSA c/us or ETL labeled.

2.3 BRIDGE CRANE SYSTEM

A.

Bridge crane system shall be as follows:

1. Span:

71 Ft., 10 1/4 Inches (coordinate with pre-engineered building column layout).

2. Capacity:

15 Tons.

3. Crane type:

Top running double girder.

4. Classification:

Crane shall be designed and constructed to CMAA

Specification # 70 for Class “C” service requirements and operation in a non-hazardous environment.

5. Bridge speed:

100 FPM, infinitely variable.

6. Bridge drive:

Dual motor drive with electric brakes.

7. Trolley speed:

65 FPM, infinitely variable.

8. Trolley drive:

Motorized.

9. Hoist speeds:

3.3 and 20 FPM - two speed.

10. Hoist type:

Electric wire rope.

11. Hoist lift required:

20 Ft.

12. Control:

Pendant from independent track on bridge.

13. Visual Warning System:

Red flashing or rotating beacon.

14. Audible Warning System:

Electro-mechanical vibration diaphragm type.

2.4

BRIDGE CRANE MATERIALS

A.

Bridge beams: Steel; ASTM A36 or A992.

B.

End trucks: Steel; ASTM A36.

C.

Trolley: Steel; ASTM A36.

D.

Wheels: Cast Steel; ASTM A216.

E.

Hooks: Forged Steel; ASTM A668.

F.

Welding Electrodes: Comply with AWS requirements.

2.5

SYSTEM AND COMPONENTS

A. Hoist & Trolley:

1. Top-running double girder cranes shall utilize a double girder trolley electric wire rope hoists.

2. The hoist shall be equipped with an electro-mechanical load-limiting device that shall prevent lifting more than 110% of the rated load.

3. Hoist and trolley motors shall be per 2.3A above, as applicable.

4. Hoisting motor(s) shall be two-speed/two winding squirrel cage type with a speed ratio of 6:1.

5. Hoisting motor(s) shall be totally enclosed with IP55 protection, minimum class F insulation, klixon type bimetal switch for thermal protection and shall have a 60% ED rating.

6. Trolley shall be furnished with an adjustable frequency inverter drive and two-step or infinitely variable speed control for smooth acceleration and deceleration.

7. Trolley motors shall be inverter duty motors with minimum class “F” insulation and motor enclosures shall be TENV [totally enclosed non-ventilated].

8. Rotary cam type limit switch equipped with 4 micro-switches shall be provided. Limit switch shall provide upper and lower limit of hoist travel, hoist slow down prior to reaching upper limit and phase sequence supervision at upper limit. An additional block operated limit shall be included.

9. Hoist motor brake shall be DC disc type with adequate torque to stop and hold over 125% of the hoist rated load.

10. Large diameter rope drum with a minimum of 36:1 drum to wire rope diameter ratio. Groove depth shall be at least 35% of rope diameter. The rope drum shall be equipped with a rope guide to help keep the rope aligned in the grooves of the drum.

11. Wire rope shall be constructed from galvanized steel having a minimum safety factor of 5.

12. Hoist reeving shall be single reeved. Lateral hook drift shall not exceed 1/8 inch per foot of vertical travel on single reeved models.

13. The hoist nameplate is to carry a CSA c/us rating. The actual hoist control enclosure rating shall be at least equivalent to IP55 / NEMA 4 type.

14. Hooks shall be made of forged alloy steel (34CrMo4QT or 34CrNiMo6QT) and shall be fitted with a spring-loaded flipper-type safety latch.

15. Hoist shall have a duty rating suitable for the load class and load cycles of the application.

16. AGMA quality class 12 machine cut, hardened and precision ground hoist gearing. The gears inside the hoist gearbox are lubricated with semi-fluid grease or oil.

17. AGMA quality class 10, hardened and precision ground trolley drive gearing, lubricated by semi-fluid grease.

18. Trolleys shall have safety drop lugs and energy absorbing bumpers.

B. Bridge Girder

1. Bridge girder shall be per 2.3A above, as applicable.

2. Bridge girders shall be constructed from welded box girders or structural beams.

C. End Trucks and Bridge Drive

1. End trucks shall be designed in accordance with CMAA specifications as applicable (reference appendix B).

2. End trucks shall be bolted to bridge girder.

3. Bridge drive shall be dual-motor (A-4 arrangement per CMAA).

4. Bridge drive shall be designed to stop the bridge within CMAA specifications.

5. End trucks shall be equipped with rail sweeps and energy-absorbing rubber bumpers.

6. Travel limit switches to be provided as necessary for safe operation.

7. Bridge shall be furnished with an adjustable frequency inverter drive for smooth acceleration and deceleration.

8. Bridge motors shall be inverter duty motors with minimum class “F” insulation and motor enclosures shall be TENV [totally enclosed non-ventilated].

9. AGMA quality class 10, hardened and precision ground bridge drive gearing, lubricated by semi-fluid grease.

D. Power Supply

1. Power supply for the hoist shall be 460 volt, 3 ph., 60 Hz. All power required for the operation of the hoist, trolley, and end trucks shall be developed from this source.

2. Runway electrification shall be 4-bar safety type rigid conductors as manufactured by Insul-8, Duct-O-Wire Company or Wampfler. Wall mounted disconnect switch and power to runway conductors provided by Electrical Contractor.

3. Cross bridge electrification shall be flat cable style festoon system with terminal box, multi-conductor cord, plug connectors (when available) and accessories. Cables are to be hardwired when plug connectors are not available.

E. Controls

1. Six-way operation, plug-in pushbutton pendant suspended from independent festoon track.

2. Pendant shall include Start (momentary) button and Emergency Stop (push to maintain, turn to release) that controls a mainline contactor in the bridge control panel.

3. Pushbutton shall be clearly marked with hoist, trolley and bridge travel directions.

4. Hoist shall be 2 speed magnetic reversing type control and the trolley and bridge controls shall be variable frequency inverter control as required per section 2.3A.

5. Electrical control enclosures shall be IP55 or NEMA 4 type. Pushbutton enclosure shall have a rating of IP65, NEMA 4X, 4 or 5.

F. Labeling

1. Hoist and bridge beam shall be labeled with load rating.

2. A corrosion-resistant nameplate shall be fixed to the bridge with the following information:

a. Name of manufacturer.

b. Manufacturer’s model number and serial number.

c. Capacity.

d. Date of manufacture (month and year).

G. Painting

1. Hoist and trolley shall be factory painted (2-part epoxy) per manufacturer’s standards.

2. Bridge shall be shop cleaned, primed, and painted per manufacturer’s standards.

3.

The following items shall not be painted:

a. Rail surfaces in contact with wheels

b. Wheel running surfaces

c. Hoist wire rope

d. Conductor bar, festoon cables and supports H. Visual Warning System

1. The “crane” shall be fitted with a visual warning system operating during any moving operation, and be capable of alerting personnel located within 200 feet in any direction of the crane assembly.

2. The visual signal shall be a red flashing or rotating beacon, with a minimum of 300 effective candlepower per flash, at a minimum of 60 flashes or rotations per minute, Federal Signal FB2PST (or approved equal).

I. Audible Warning System

1. The audible signal shall be an electro-mechanical vibration diaphragm type, capable of producing sound blasts of 110dB @ 10 feet distance, in a variety of different sequences of configurations, Federal Signal 350WB Vibratone Horn (or approved equal).

PART 3 – EXECUTION

3.1 INSTALLATION AND INSPECTION

A. Inspect structure and crane rail erection for conformance with reviewed shop drawings and contract documents prior to installation of equipment. Bring nonconforming work to the attention of the Architect prior to proceeding with crane installation. Non-conforming runway structure or installation must be corrected prior to load testing of crane system.

B. Bridge crane shall be installed in conformance with manufacturer’s instructions and inspected by a manufacturer’s representative. Provide all necessary accessories to make bridge crane complete, usable, and capable of meeting the operating requirements specified in the Operating Requirements. Test, adjust and clean equipment for acceptance by the Architect.

3.2

FIELD QUALITY CONTROL

A. Acceptance Testing: All crane equipment shall be operated through a complete lift and lowering cycle and through a complete travel of the bridge and trolley to determine that the equipment shall perform smoothly and safely and that pendant cable length is sufficient to permit operation from desired floor levels. All tests shall be carried out with the bridge crane equipment loaded at 125 percent of capacity. The bridge crane provider shall provide the test weight loads. Any defects shall be corrected by the bridge crane provider without any expense to the Owner.

3.3

PROTECTION

A. If crane is used by the Contractor, it shall be repaired, repainted, and otherwise refurbished to like new condition prior to its acceptance. The Contractor assumes all responsibility for operation and maintenance until the crane has been accepted by Owner.

3.4 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to operate, adjust, and maintain bridge crane.

B. Check operation of bridge crane with Owner's personnel present before date of Substantial Completion and again not more than one month before end of warranty period. Determine that operation systems and devices are functioning properly

3.5 CLEANUP

A. Upon completion of work, area shall be cleaned and restored to original condition, acceptable to the Architect/Owner.

END OF SECTION 412213