Project Number: AW-2225

Contract Number: TW-0839

December 1996

SPECIAL SPECIFICATION

SECTION 14635

[DOUBLE-GIRDER TOP RUNNING BRIDGE CRANE WITH TOP RUNNING TROLLEY (
DGTRBCTRT)]{.underline}

[PART 1 - GENERAL]{.underline} [Page]{.underline}

1.01 Scope of Work

1.02 References

1.03 Verification of Dimensions and Drawings

1.04 Qualifications

1.05 Submittals

1.06 Warranty

PART 2 - PRODUCTS

2.01 Materials

2.02 Capacities and Features

2.03 Runway Alignment

2.04 Bridge Crane, Trolley and Hoist

2.05 Electrical Installation

2.06 Motors

2.07 Controls

2.08 Conductor/Collector System

PART 3 - EXECUTION

3.01 Examination

3.02 Installation

3.03 Inspection and Testing 13

SPECIAL SPECIFICATION

SECTION 14635

[DOUBLE-GIRDER TOP RUNNING BRIDGE CRANE WITH TOP RUNNING
TROLLEY]{.underline}

# PART 1 - GENERAL

## 1.01 [SCOPE OF WORK]{.underline}

A. [General]{.underline}: Furnish all labor and materials, and the
services to design, fabricate, install and test motor-driven
double-girder crane (20 ton capacity) with attached auxiliary hoist (5
ton capacity) as shown on drawings and as specified.

B.  [Furnish all materials, labor, tools and equipment]{.underline} to
    perform vertical and lateral alignment of "S" section steel beams
    provided for the support of a top running bridge crane. The work
    includes, but is not limited to, laser positioning, electronic
    distance measuring, certified structural welding and bolting.
    Additional work related to beam alignment may include heat-induced
    straightening of structural beams and their removal and re-erection.
    A majority of this work must be performed on elevated,
    OSHA-approved, work platforms. Satisfactory performance of the
    runway alignment operation procedure shall be demonstrated by
    Contractor to the Sandia Delegated Representative (SDR) and to a
    Sandia National Laboratories (SNL) selected crane inspection service
    prior to initiating crane installation.

C.  [Furnish, install and demonstrate]{.underline} satisfactory
    performance of a double-girder electric bridge crane, motorized
    trolley and hoist, electrification system, pendant push-button, and
    other work referenced herein and on the drawings to provide a
    complete and operable unit.

D.  [Contractor shall demonstrate]{.underline} satisfactory performance
    under this specification at various times during the work outlined
    herein to the SDR and to a SNL-designated crane inspection service.
    Costs for crane inspection are borne by SNL. Inspections shall be
    performed on the runways after their alignment, on the crane
    components prior to installation, on the crane system after
    installation, and after the load test.

E.  [Governing Crane Standard Specification]{.underline}: Unless
    modified or superseded by written statements in this specification
    section, all materials and work furnished by the contractor shall
    meet [all requirements without exception]{.underline} of the Crane
    Manufacturers Association of America (CMAA) Specification No. 70,
    "Specifications for Top Running Bridge & Gantry Type Multiple Girder
    Electric Overhead Travelling Cranes, (Revised 1994).

F.  [Related Sections]{.underline}: Other work related to this
    specification and covered under other specification sections may
    include:

1\. Division 2, Section "Earthwork".

2.  Division 2, Section "Caissons"

3.  Division 3, Section "Cast-In-Place Concrete"

4.  Division 5, Section "Structural Steel"

5.  Division 16, Section "Electrical Work"

## 1.02 [REFERENCES]{.underline}

A. [American Institute of Steel Construction (AISC)]{.underline}

Manual of Steel Construction

Specification for Structural Steel Buildings, Allowable Stress Design
and Plastic Design

Code of Standard Practice for Steel Buildings and Bridges

B. [American National Standards Institute (ANSI)]{.underline}

B30.2 Overhead and Gantry Cranes (Top Running Bridge, Single or Multiple
Girder, Top Running Trolley Hoist)

B30.16 Overhead Hoists (Underhung)

C. [American Society for Testing And Materials (ASTM)]{.underline}

D. [American Welding Society (AWS)]{.underline}

D1.1 Structural Steel Welding Code

D14.1 Specifications for Welding Industrial and Mill Cranes

E. [Crane Manufacturers Association of American (CMAA)]{.underline}

Specification No. 70 Specifications for Top Running Double Girder
Electric Overhead Traveling Cranes Utilizing Top Running Trolley Hoist

F. [National Fire Protection Association (NFPA)]{.underline}

70 National Electrical Code (NEC)

## 1.03 [VERIFICATION OF DIMENSIONS AND DRAWINGS]{.underline}

A. [Dimension Verification]{.underline}: The contractor is responsible
for coordination and proper relation of all work to the building
structure and to the work of all trades. The contractor shall verify all
dimensions shown on the drawings and physical dimensions of the building
proper that relate to runway alignment, crane fabrication and all other
requirements under this specification. The contractor shall notify the
SDR of any discrepancy prior to placing the order for any of the crane
components.

1\. During the course of construction of the building and the building
structural framework, as-built dimensions may deviate from the intended
dimensions shown on the drawings. It is the contractor's responsibility
to be aware of the possible dimensional tolerances permitted for
construction of portions of the supporting structure. For example,
drilled pier foundation installation, reinforced concrete placement, and
structural steel fabrication and erection each have dimensional
tolerances which may have an impact on performing the work under this
specification. The contractor shall exercise appropriate quality control
during construction to insure, specifically, that the craneway alignment
specified herein can be performed at the appropriate stage during
construction with out additional expense to SNL. The Contractor shall
notify the SDR/C&H team in writing one week prior to the scheduled
completion of the bridge runway system so that the survey information
can be reviewed and verified.

B.  [Design Drawing Review]{.underline}: The method of attachment of the
    crane runway beams to the supporting structure will permit a limited
    amount of vertical and lateral adjustment.

C.  Prior to starting construction the contractor shall review the
    entire drawing set to determine if the amount of vertical and
    lateral adjustment specified on the drawings is satisfactory to
    perform the runway alignment procedure. The contractor shall take
    into account the permitted dimensional tolerances of all other
    building materials and their installation.

D.  Prior to construction the contractor shall submit a letter to SNL
    certifying that the runway alignment procedure can be performed, as
    specified, on the runway beams and supporting structure described on
    the drawings. This letter shall be written by the contractor's
    qualified installation agent and endorsed by the contractor.

C. [Design Error and Intent]{.underline}: If the contractor believes
that the design as shown on the drawings cannot enable satisfactory
completion of all work covered under this specification, the contractor
shall notify SNL prior to commencing any construction activities. The
contractor shall inform SNL of the scope of the design deviations
required. The contractor shall provide sketches, drawings,
specifications and design calculations, as necessary, performed by
licensed engineer(s) in the discipline(s) required to make the changes.
All costs related to suggesting required changes, e.g. engineering fees,
overhead, lost construction time, shall be borne by the contractor. All
materials and labor necessary to complete necessary changes to the
design shall be at the contractor's expense. The intent of the contract
drawings shall be maintained. It is not permissible for the contractor
to suggest alternate crane configurations or performance requirements.

## 1.04 [QUALIFICATIONS]{.underline}

A. [Qualifications of Runway Alignment Organization]{.underline}: The
runway alignment organization shall demonstrate satisfactory performance
of alignment of pairs of runway beams, using techniques similar to those
specified herein. The runway alignment organization shall have been in
this business for a period of five (5) years. The runway alignment shall
be surveyed by a professional surveyor licensed to practice in the State
of New Mexico.

B.  [Qualifications of Crane Manufacturer]{.underline}: The crane
    manufacturer shall be a business whose principle activity and
    primary sales is in the manufacture of bridge cranes and trolley
    hoists. The crane manufacturer shall have been in that business for
    at least ten (10) years.

C.  [Qualifications of Crane Installer]{.underline}: The crane installer
    shall be a business that employs service personnel that have
    undergone training that is sponsored by the manufacturer of the
    crane to be furnished. The crane installer shall have been in this
    business for at least two years. The crane installer shall be
    located within 300 miles of Sandia National Laboratories in
    Albuquerque or demonstrate the ability to respond to service calls
    within 48 hours.

## 1.05 [SUBMITTALS]{.underline} 

A. [General]{.underline}: Submit the following in accordance with
conditions of Contract and Division 1, Section "Descriptive Submittals."

B. [The submittals required]{.underline} under this specification shall
be provided in three packages. No partial packages will be considered.
The first package shall be submitted to SNL prior to commencing any
construction activities. The second package shall be submitted to SNL
simultaneously with all structural steel shop drawings specified
elsewhere. The third package shall be submitted after final acceptance
of the crane.

C. [First Submittal Package (prior to commencing construction
activities)]{.underline}:

1.  [Qualifications of Runway Beam Alignment Organization]{.underline}:
    Demonstrate work in this business for the duration specified above
    under Section 1.04, "Qualifications." Submit names of owners, job
    locations, crane sizes, and dates of installation for top running
    crane runway beam alignments performed at three (3) different jobs
    during the past five years.

2.  [Certification of Design Review and Acceptance]{.underline}: Submit
    a letter written by the qualified runway beam alignment organization
    endorsed by the contractor stating that the design drawings have
    been reviewed and accepted as enabling satisfactory runway alignment
    at the appropriate time during construction. The letter shall state
    that the permissible tolerances of fabrication and installation of
    other relevant portions of the building have been reviewed, that the
    contractor is aware of the deviations of "as-built" dimensions from
    design dimensions, and that the contractor shall take care in other
    construction work so that the ability to perform the runway
    alignment will not be compromised.

3.  [Written Alignment Procedure]{.underline}: Submit a written
    procedure for performing the alignment of the runway beams. Itemize
    each significant step such as shimming, laser leveling, tack
    welding, final survey, final welding, etc. Identify all special
    equipment to be used, such as survey equipment, man lifts, etc.

D. [Second Submittal Package (with structural steel shop
drawings)]{.underline}: Submit simultaneously with all structural steel
shop drawings the following:

1\. Crane shop drawings showing identification of components, sizes and
assembly techniques, including all bolting and welding. Shop drawings
shall include trolley and bridge bumpers, limit switch locations and
other items required by this specification to install a complete crane
system. Shop drawings shall identify field welding and connection of
runway splices identified on the drawings.

2\. Manufacturer's catalog data identifying each component of the crane,
electrical controls, runway bumpers, splice accessories, runway beam
clamps, etc.

3\. Schematic Diagrams.

4.  [Qualifications]{.underline} of Crane Manufacture and Crane
    Installer: Submit documentation to substantiate the qualifications
    of the crane manufacturer and crane installer according to the
    requirements specified above under Section 1.04, "Qualifications."

5.  [Welder's Certificates]{.underline}: Submit certificates for all
    individuals, whether employed by the crane manufacturer, installer,
    or runway alignment organization, performing work on the crane
    installation in accordance with AWS D1.1 or AWS D14.1, whichever
    applies.

E. [Third Submittal Package (after final acceptance)]{.underline}: After
final system demonstration and acceptance by SNL, submit the following:

1.  [Maintenance and Operation Manual]{.underline}: Furnish eight (8)
    sets of complete parts lists with recommended spare parts lists, and
    complete operation, shop and maintenance manuals. The manual shall
    include methods of adjustment, step-by-step maintenance required and
    frequency of performance, and points to check prior to putting the
    equipment back into operation.

2.  [Warranty]{.underline}: Submit warranties from the crane
    manufacturer and from the original installation contractor for the
    period of performance specified below under section 1.06,
    "Warranty". The warranties shall include names and telephone numbers
    to contact in the event a service call in necessary.

3.  [Certification]{.underline}: Certify that all materials used
    including brake assemblies and paint are asbestos-free and
    lead-free.

## 1.06 [WARRANTY]{.underline}

> The entire crane and hoist system shall be guaranteed for a period of
> not less than two (2) years against defective material, design,
> workmanship and installation. The period of performance of the
> guarantee shall begin after final acceptance by Sandia National
> Laboratories. The guarantee shall include on-site service by the
> original installing organization. The guarantee shall include service
> response to calls from designated SNL personnel within 48 hours. Each
> service call shall be made by a team of at least two qualified service
> personnel. At the option of the installing organization, SNL will
> permit up to two field inspections during the duration of the
> guarantee.

# PART 2 - PRODUCTS

## 2.01 [MATERIALS]{.underline}

A.  [General]{.underline}: Materials used in the fabrication of the
    crane, trolley and hoist shall be in accordance with the
    manufacturer's standards.

B.  [Design Requirements]{.underline}: Steel design and fabrication
    shall comply with applicable portions of the specifications of AISC
    and CMAA. Loadings, impact allowances and allowable stresses shall
    be in accordance with governing industry standards.

## 2.02 [CAPACITIES AND FEATURES]{.underline}

> Furnish crane system having the following listed capacities and
> features. Refer to the design drawings for other pertinent information
> not specified below. All speeds indicated are ±20%.

A. [Bridge]{.underline}:

20-ton double-girder top running bridge with top running trolley.

CMAA - Duty Class "B"

Two-speed: CMAA "slow"

B. [Main Hoist]{.underline}:

1\. 20-ton top running trolley

Close headroom cross-mounted

CMAA - Duty Class "B"

Two-speed trolley: CMAA "slow"

Two-speed hoist: CMAA "slow"

Reeving: 4 part double

Lift Height: 43 feet

2\. Controls

10 push-button station pendant on a festooned cable parallel to bridge
to accommodate start, stop, main hoist up, main hoist down, aux. Hoist
up, aux. Hoist down, trolley north, trolley south, bridge east and
bridge west functions. Pendant will have internal or external support
cable with strain relief.

3\. Elevations

Runway beam top flange: 27'-0" Above Finish Floor (AFF)

Crane rail height: 4 ¼"

Allowance above rail for girder and trolley: 4'-4"

Minimum hook height: 25'-0"

C.  [Auxiliary Hoist]{.underline}:

D.  5-ton hoist mounted on main trolley

CMAA - Duty Class "B"

Two-speed hoist: CMAA "Medium" speed.

Reeving: 2 part double reeving

Lift height: 43 feet

## 2.03 [RUNWAY ALIGNMENT]{.underline}

A.  [Field Welding and Cutting]{.underline}: Comply with the provisions
    of AWS D1.1 for procedures and quality of welds. Flame cutting or
    burning of structural sections or shapes, if necessary for the
    runway alignment, will be permitted only by authorization of the
    SDR. SDR/C&H will verify alignment prior to placement of final
    weldments.

B.  [Field Surveying]{.underline}: Provide results of surveys of the
    alignment of the runway beams performed by a professional surveyor
    registered in the State of New Mexico. Runway survey reports shall
    contain measurement data along three axes: parallel to the runway,
    perpendicular (horizontal) to the runway, and vertical. Provide
    survey data referenced to the center of the bottom flange of the
    runway beam at each support location, at each splice location, and
    at other points, as necessary, to demonstrate compliance with the
    tolerances in Part 3.

## 2.04 [BRIDGE CRANE, TROLLEY AND HOIST]{.underline}

A.  [Single-source supply]{.underline}: Except as noted below, all
    structural, mechanical, and electrical components for the top
    running bridge crane system shall be furnished by and fabricated by
    a single manufacturer.

> All components shall be assembled at the factory into discreet units,
> such as hoist, trolley, overhead crane sections, etc. The structural
> steel section composing the bridge beam may be supplied and assembled
> by other than the crane manufacturer. All cranes supplied under the
> specifications shall be of the same manufacturer.

B.  [Bridge Crane and Trolley]{.underline}: The bridge crane and trolley
    shall be designed to meet the load capacities and duty class
    requirements stated above. The bridge crane and trolley shall be
    selected from the manufacturer's standard sizes and quality lines
    such that the crane and trolley are essentially equivalent in duty
    class and performance. The two should be a matched set.

C.  The overhead bridge crane shall be driven with a A4 motor.

D.  The trolley shall be motor driven with a single motor shaft, with a
    minimum of one driven wheel on each side of the bridge beam.

E.  The profile of the bridge crane and trolley wheels shall conform to
    the bottom flanges on which they will operate. Minimum trolley wheel
    diameter is 6 inches. The bridge crane shall be provided with a
    minimum of two pairs of wheels for each runway. Minimum bridge wheel
    diameter is 15 inches.

F.  Rail sweeps and drop safety lugs shall be provided adjacent to each
    wheel pair for the bridge crane and trolley. The safety lugs shall
    be designed to sustain 200% of the design wheel axle load each lug
    is intended to protect.

G.  The hoist shall be mounted to the trolley and shall hold at rest
    150% of the rated load. Provide close fitting rope guides, all gears
    shall operate in an oil bath or soft grease. Provide load limiting
    devices for both 20 ton and 5 ton hoists.

> The hoist brakes shall be rated at 150% of the motor torque for each
> of two holding brakes - one of which shall be Weston mechanical type.
>
> 6\. [Bridge brake]{.underline}: The drive motor shall have fully
> enclosed, non-ventilated, dust proof, direct acting magnetic brakes.
> The brake action shall be "failsafe" automatically engaging when motor
> power is disconnected. The brakes shall act directly on the individual
> motor shafts and shall be asbestos free, maintenance free,
> self-adjusting with brake wear indicators and end-of-wear stops to
> prevent brake surface damage.
>
> 7\. [Hoist Brake]{.underline}: The hoist brake shall include a
> "Weston" type mechanical brake and an electric motor brake. The
> electric motor brake shall be a direct acting asbestos free, disc type
> motor brake with a minimum brake rating of 150% of motor torque.
>
> 8\. [Trolley Brake]{.underline}: Trolley drive system shall include a
> worm driven gear right angle speed reducer.
>
> 9\. [Hoist Hook]{.underline}: Shall be single barbed and shall be made
> of forged steel complying with ASTM A-688. The hook shall be fitted
> with safety latches designed to preclude inadvertent displacement of
> slings from the hook saddle. Painting or welding shall not be
> performed on the hook. Hook nut shall be secured with a removable type
> set screw or other similar fastener, but shall not be welded. Hooks
> shall be designed and commercially rated with safety factors in
> accordance with CMAA. The hook shall be free to rotate through 360
> degrees when supporting the rated load.

## 2.05 [ELECTRICAL INSTALLATION]{.underline}

A.  [Electrical Work]{.underline}: The installation shall comply with
    all the mandatory, advisory and recommended applicable rules of the
    National Electrical Code (NFPA 70) and all state and municipal
    codes, where applicable. All electrical materials shall be new and
    as approved by Underwriter's Laboratories, Inc. for the application.
    Defective equipment or equipment damaged in the course of
    installation or test, shall be replaced or repaired in an approved
    manner. Equipment that has been scratched or marred shall be
    repainted. The standard equipment manufacturer's color and finish
    shall be used. Equipment shall not be stored outdoors unless
    properly covered and as approved by the inspector. The final
    approved contract drawings shall indicate the extent and general
    arrangement of the conduit and wiring systems. If any departures
    from the contract drawings are deemed necessary by the Contractor,
    details of such departures and the reasons shall be submitted as
    soon as practicable. No departures shall be made without prior
    written approval.

B.  [Conduit]{.underline}: Conduits shall be Electrical Rigid Metallic
    Tubing throughout. Conduits shall be securely fastened to all
    junction boxes and control cabinets. Conduit shall be of adequate
    size to carry required conductors. Final connections to motors and
    other non-stationary devices shall be made with galvanized steel
    core liquid tight flexible conduit.

C.  [Wiring]{.underline}: Power wiring shall consist of stranded
    conductors and shall not be smaller than No. 12 AWG. Control and
    pendant cable wiring shall be stranded type No. 16 or larger. Wire
    with white colored insulation shall be used throughout the system
    for the neutral conductor. Green colored insulation shall be used
    for the ground wire only. No splices shall be allowed in control
    wiring. All wiring shall be enclosed in conduit. All cables in
    stress, such as the pendant cable, shall have insulation of the
    load. Unless otherwise noted, all conductors shall be annealed
    copper with [minimum]{.underline} 93% conductivity and shall conform
    with the applicable standards of U.L., A.N.S.I. and I.P.C.E.A.

D.  [Labeling]{.underline}: The contractor shall furnish and install
    wraparound, stick-on labels covered with clear plastic, heat
    shrinkable tubing of the proper size to fit the wire being labeled
    or pre-marked nylon clip sleeves. These labels shall identify each
    wire as to panel and circuit number or terminal numbers. Neutrals
    shall be similarly tagged as to all the circuits they serve in each
    box.

E.  [Grounding & Bonding]{.underline}: An independent grounding
    conductor shall be supplied throughout. The power and control system
    (conduit, rails, etc.) shall not serve as the sole grounding means.
    All equipment shall be grounded.

F.  [Enclosures]{.underline}: [All enclosures]{.underline} shall be dust
    tight enclosures designed to house electronic and electrical control
    (NEMA 12) equipment, wiring, etc.

    Provide and install a complete electrical system of interconnecting
    duct runs and trolley collectors for the full extent of the bridge
    and a 480 VAC, three phase, main disconnect to supply the main
    runway accessible from ground level.

G.  [Fuses]{.underline}: The contractor shall furnish a complete set of
    fuses for all switches where fuses are specified. Fuses shall be
    time-delay type, unless shown otherwise.

H.  [Safety switches]{.underline}: All safety switches shall be of heavy
    duty type and shall comply with the requirements of the
    Underwriter's Laboratories, Inc. (UL) Standards for Service
    Equipment. They must be NEMA, Type HD, and must be horsepower rated.
    They shall not be used as pullboxes or junction boxes. Switch
    terminals shall be approved for use with copper or aluminum
    conductors. All switches shall have engraved nameplate labels
    affixed to the cover designating the equipment controlled and the
    actual voltage, fuse type, and fuse amperage rating utilized.

    Furnish and install a main disconnect for the entire bridge crane at
    ground level.

## 2.06 [MOTORS]{.underline}

A.  [Bridge and Trolley Drive Motors]{.underline}: All motors shall be
    bridge crane duty rated, squirrel cage rotor, NEMA design "B" with
    permanently lubricated ball bearings suitable for three phase 480V
    VAC, 60 Hertz operation. Motors shall be rated for operation at
    6,000 ft.

B.  [Hoist Motors]{.underline}: All motors shall be hoist duty rated,
    squirrel cage rotor, NEMA design "D" with permanently lubricated
    ball bearings suitable for three phase 480 V VAC, 60 Hertz
    operation. Motors shall be rated for operation at 6,000 ft.

C.  [Motor Protection]{.underline}: [All motors]{.underline} shall have
    individual branch [CIRCUIT OVERCURRENT PROTECTION]{.underline} and
    thermal overload relays with manual reset features in all three
    phases. Motor starters shall be of the full-voltage, reversing,
    magnetic type. They shall be both electrically and mechanically
    interlocked and shall be standard catalog items of electrical
    manufacturers. Starters shall meet NEMA Standard, IC1.

## 2.07 [CONTROLS]{.underline}

A.  [Pendant Control]{.underline}: Provide 120 VAC, single phase
    obtained from one control transformer integral with the other
    controls. Provide Hi-Bay crane with an eight push-button control
    station with ON/OFF control, carried on an 8-wheel manual trolley on
    a separate track running the full length of the bridge. Pendant
    push-button arrangement shall be per recommended arrangements of
    ASME B30.2-1990. All push-buttons shall be wired in such a manner
    that there is electrical interlocking between pairs of push-buttons,
    i.e., up-down, north-south, east-west. Push-buttons shall be labeled
    and positioned from top to bottom. All push-buttons shall return to
    "off " position when released by operator. All push-buttons shall be
    recessed between rigid individual control shields to protect against
    accidental contact. The operator shields shall allow access for
    operation by a glove-protected hand. There shall be a dead-band and
    pressure detent required in the push-button switches providing
    separation between slow and fast speeds on all speed buttons
    resulting in positive speed control.

    The pendant control cable shall be hard service, extra hard usage
    with an integrated strain relief steel cable to allow pulling
    pendant control to travel the length of the bridge. The pendant will
    be hand positioned independent of the hoist trolley.

    Controls such as end limits, start-stop control, hoist limit
    switches, etc., can be either power circuit or control circuit type.
    However all controls shall indirectly interrupt power circuits
    through starters and contractors appropriately rated for the load.

B.  [Limit Switches]{.underline}: Provide end limit switches to control
    travel of bridge, hoist and trolley functions. Heavy duty limit
    switches shall be installed to stop travel at each end of the bridge
    rail and main runway and to limit hoist cable and pendant control
    cable travel at both upper and lower positions. Hoists shall be
    provided with a hoist limit overload switch set at 125% of full load
    initially and rest to 100% after crane acceptance tests. When the
    hoist overload is activated, the lowering movement shall remain
    operational.

C.  [Main Line Disconnect]{.underline}: Crane shall be furnished with a
    main line disconnect that removes power from all motors when pendant
    station is turned off.

D.  [Direction of Movement Signs]{.underline}: On the underside of the
    bridge crane beam paint directional arrows to correspond to the
    labeling of push-buttons on the pendant control. Paint directional
    arrows with a size, style and color to be readily visible from any
    position of the control pendant. Label capacities on bridge.

## 2.08 [CONDUCTOR/COLLECTOR SYSTEM]{.underline} 

A. [Conductor System]{.underline}: Provide bridge runway with a rigid
insulated figure 8 type system rated 480 VAC, 3 phase, 4 conductor (3
ungrounded, 1 equipment ground). Trolley to be a festooned system.

B.  [Collector System]{.underline}: Provide bridge runway collector
    system with single head collectors each with one contact head and
    shoe.

C.  [Conductor Identification:]{.underline} Voltage levels, grounded
    conductors and ungrounded phase conductors shall be identified by
    color: grounded neutral gray, grounding conductor green or bare,
    Phase "A" (ungrounded) conductor brown, Phase "B" ungrounded
    conductor orange and Phase "C" (ungrounded) conductor yellow.

# PART 3 - EXECUTION

## 3.01 [EXAMINATION]{.underline}

A.  [Pre-Alignment Inspection]{.underline}: Before starting the runway
    alignment, the contractor and a representative of the runway
    alignment organization shall inspect the building structural steel
    and other system under construction that interact with the crane
    installation. The contractor and runway alignment representative
    shall verify compliance with the plans and specifications for the
    portions of the building that may affect satisfactory alignment of
    the runway beams.

B.  [Pre-Installation Inspection]{.underline}: Before installation of
    the crane, the contractor and the crane installer shall inspect the
    crane bridge, trolley, and hoist systems and components at the job
    site to determine compliance with the specifications, manufacturer's
    data, and shop drawings as approved. The contractor shall notify the
    SDR two days prior to the inspection.

## 3.02 [INSTALLATION]{.underline}

Unless indicated otherwise, the crane system shall be installed
according to the manufacturer's recommendations.

A.  [Clearances]{.underline}

> The minimum clearance between any moving part of the crane and any
> fixed portion of the building shall be 3 inches, unless greater
> clearances are specified elsewhere.

B. [Tolerances on Runway Alignment]{.underline} Tolerances on the runway
beam alignment shall be as shown below. A field survey report prepared
by a licensed professional surveyor shall be submitted to demonstrate
that the runway beams meet all tolerances indicated in Figure 1. It is
the contractor's responsibility to provide through documented survey
data that the tolerances have been achieved.

1.  [Crane span:]{.underline} Plus or minus ¼ inch (6.4 mm) with maximum
    rate of change or ¼ inch in 20'-0" (6.4 mm:6100 mm).

2.  [Straightness]{.underline}: plus or minus 3/8 inch (9.5 mm) with
    maximum rate of change of ¼ inch in 20'-0" (6.4 mm in 6100 mm).

3.  [Elevation]{.underline}: plus or minus 3/8 inch (9.5 mm) with
    maximum rate of change of ¼ inch in 20'-0" (6.4 mm in 6100 mm).

4.  [Rail-to-Rail Elevation]{.underline}: plus or minus ¼ inch (6.4 mm)
    with maximum rate of change of ¼ inch in 20'-0" (6.4 mm in 6100 mm).

5.  [INSPECTION AND TESTING]{.underline}

A. [Inspection:]{.underline}

1.  Assure that all structural requirements are completed, i.e. bridge
    stops and ladders installed. Verify all electrical connections
    completed, i.e., runways, radio controls, and limit switches
    installed.

2.  After the crane is fully operational and all adjustments are
    complete, conduct an operational and safety inspection. The crane
    shall be operated by a representative of the bridge crane installer
    with a Contracting Officer representative present to direct the
    operations. Inspections are required as follows:

3.  Verify all clearances.

4.  Braking systems for bridge, trolley and hoist: Inspect at full load
    and no-load conditions.

5.  Speed control and smoothness of travel, ease of speed selection and
    discrimination between speeds.

6.  Limit switches operation controlling travel.

7.  Proper reeving of hoist under load and no-load conditions.

8.  Proper lubrication of gear boxes, etc., requiring grease or oil.

9.  Verify proper operations of controls by pendant.

10. Verify that bumpers function properly.

11. Operate pendant up and down from wall switch.

12. By lifting Sandia-furnished weights, verify overloads for brakes and
    all other components.

13. Operate the crane full length of the runway with the trolley against
    the stop on both ends

14. [Tests]{.underline}:

15. No-Load Test - Pendant Control

16. Complete operational test - run trolley and bridge full length of
    respective runways observing collector poles and conductor for
    alignment and watching for any interference with building or
    equipment.

17. Check all stops at end of bridge and trolley rails for proper
    alignment and set all limit switches to stop trolley or bridge prior
    to stop engagement, at maximum speeds.

18. Trolley should be positioned at center of bridge for checking bridge
    stops. Stops should be aligned to bridge rather than to building and
    properly positioned on rails. Limit switch activation marks should
    be provided on rails.

19. Hoist: Provide hoist to within 2 feet of its upper position and
    STOP. Raise empty hook at creep until limit switch trips and stop
    hoisting motion. During this operation, watch for proper alignment
    of block and limit. After check out at low speed, lower load block
    and run hoist at full speed to assure proper setting, note distance
    the block is from the drum and mark hoist rope. Verify that both
    upper geared and final weighted limit switch are set correctly for
    each hoist.

20. Crane equipped with lower limit should have at least 2 ½ wrap of
    rope on drum with hook in lowest position and shall have lower
    geared limit switches.

21. Load Test: Conduct load tests at the various hoist/travel speeds
    provided.

22. Raise a load equal to about 50% of the rated load to no higher than
    to clear its support and stop. Adjust brakes if necessary. Raise
    load about 3 feet above its support and stop. Lower load about 12
    inches and stop. Check drift of load during stopping. Run load block
    to lowest position with load to remove construction stretch from
    ropes.

23. Set the overload protection system to 125% of the design capacity.
    Follow the same procedures as described above in a. above, except
    with 125% of rated load. For initial lift, place trolley and bridge
    in least stable position and measure bridge deflection.

24. Move trolley across entire span of bridge. Transport load by means
    of bridge for full length of runway in one direction with trolley at
    extreme right-hand end of the crane, and in the other direction with
    trolley at the extreme left-hand end. Keep load close to floor
    approximately 1 foot. When testing is complete, reset overload
    settings at 100% of design capacity.

END OF SECTION