Attachment 0001 - STS Crane Specification (revised 26 MAY 2021).DOCX

TWO SHIP-TO-SHORE CONTAINER CRANES

for

MILITARY OCEAN TERMINAL CONCORD

at

CONCORD, CALIFORNIA

GENERAL

Definitions Contractor – the Contractor supplying the Cranes and the Contractor’s representatives, subcontractors, and independent engineers retained by the Contractor.

Contractor’s Engineer of Record (Contractor’s EOR) – the Contractor’s professional engineers, for the design of the structure, ancillary structures, mechanical systems, and electrical systems, who shall be responsible for ensuring that the technical requirements of these Specifications are met. See Section C.2.1.1 of the Solicitation for other requirements, including for signing and sealing design drawings and calculations.

Crane, Cranes, or STS Cranes – the ship-to-shore, rail mounted, container handling gantry Cranes as described in these Specifications, including the structure, trolley, headblock, spreader, all attached and ancillary components, all control systems and components, all monitoring and maintenance systems and components, special tools, spare parts, and all other items defined in these Specifications.

Global Axis – Crane orientation and analysis axis system referenced in the Specification: X axis parallel to trolley travel, Y axis vertical, Z axis parallel to gantry travel.

MOTCO Facility – to be located at Military Ocean Terminal, Concord (MOTCO), Concord, California, USA. See Appendix A for site plan. See Section 3.4 for restrictions at the MOTCO Facility after delivery.

Point of Common Coupling (PCC) – The location where the Crane electrical system is connected to the wharf electrical system, defined as the end of the reeling cable where it terminates on the wharf furthest from the gantry cable reel on the Crane.

Specifications – This Specification, including appendices, and any clarifications, deviations, or other addenda agreed upon between the Government and the Contractor and incorporated into the Contract. The intent of these Specifications is to provide structural, mechanical, electrical, and functional criteria, dimensions, operating speeds and accelerations, and pertinent details for the design, construction, and installation of reliable and efficiently functioning Cranes with accessories. Unless specifically stated otherwise, the Specification requirements apply to all Cranes and all components, even if the requirement is stated in the singular. One gender means both genders.

Will and Shall – These Specifications are written to the Contractor. When a provision of this Specification requires action by the Contractor, the verb “shall” is used. If the Contractor is allowed to exercise an option when limited alternatives are available, the phrasing “either … or …” is used. However, where the words “or approved equivalent” are used, the Government reserves the option of rejecting the proposed equivalent. Statements provided in the Specification as information to the Contractor use the verbs “may” or “will.” Informational statements typically identify activities or options that “will be taken” or “may be taken” by the Government.

Specifications and Standards General The documents below form a part of this Specification to the extent specified herein. In case of difference between the following documents and this Specification, this Specification shall govern to the extent of such difference. In case of material specifications (ASTM), the design shall be based on the issue in effect at the time of bid, but material may be procured in accordance with the issue in effect at the date of manufacture.

Where reference is made to a standard specification, e.g., AWS D1.1, the latest edition in effect on the date of invitation for bids or request for proposal shall apply. If, however, the edition is stated, e.g., ISO 4628/3-1982(E), the stated edition shall apply.

US Domestic Codes and Standards and Specifications

FEDERAL

W-C-375 Circuit Breakers, Molded Case; Branch Circuit and Service

MILITARY

NAVY SEA SYSTEMS COMMAND (NAVSEA)

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

360 Specification for Structural Steel Buildings

ASSOCIATION FOR IRON AND STEEL TECHNOLOGY (AIST)

TR-06 Technical Report No. 6, Specification for Electric Overhead Traveling Cranes for Steel Mill Service

AMERICAN GEAR MANUFACTURERS' ASSOCIATION (ANSI/AGMA)

AMERICAN IRON and STEEL INSTITUTE (AISI)

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

AMERICAN PETROLEUM INSTITUTE (API)

5LX Line Pipe

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

AMERICAN SOCIETY FOR NONDESTRUCTIVE TESTING (ASNT)

TC1A How to Qualify and Certify NDT Personnel

ASTM INTERNATIONAL (ASTM)

AMERICAN WELDING SOCIETY (AWS)

ASSOCIATION OF IRON AND STEEL ENGINEERS (AISE)

No. 11 Brake Standards for Mill Motors

CRANE MANUFACTURERS' ASSOCIATION OF AMERICA, INC. (CMAA)

No. 70 Specifications for Electric Overhead Traveling Cranes

DEFENSE FEDERAL ACQUISITION REGULATIONS (DFAR)

DFARS 252.211-7003 Item Identification and Valuation

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

JOINT INDUSTRIAL COUNCIL (JIC)

H-1-1973 Hydraulic Systems

NATIONAL ELECTRICAL MANUFACTURERS' ASSOCIATION (NEMA)

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA)

Title 29 CFR, Part 1910

PACIFIC COAST MARINE SAFETY CODE (PCMSC)

RESEARCH COUNCIL ON STRUCTURAL CONNECTIONS (RCSC)

RCSC Specification for Structural Joints Using High-Strength Bolts

STATE OF CALIFORNIA THE DIVISION OF OCCUPATIONAL SAFETY AND HEALTH (DOSH)

Title 8 Regulations/Inspections for Cranes and Elevators

SOCIETY OF AUTOMOTIVE ENGINEERS, INC. (SAE)

STEEL STRUCTURES PAINTING COUNCIL (SSPC)

STRUCTURAL STABILITY RESEARCH COUNCIL (SSRC)

SSRC Guide to the Stability Design Criteria for Metal Structures

UNDERWRITERS LABORATORIES (UL)

595 Marine-Type Electric Fixtures

WIRE ROPE TECHNICAL BOARD

Wire Rope User’s Manual International Codes and Standards

BRITISH STANDARDS (BS)

7608 Guide to fatigue design and assessment of steel products, 2014 edition DEUTSCHES INSTITUT fur NORMBURG (DIN)

FEDERATION of EUROPEAN MATERIAL HANDLING (FEM)

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

INTERNATIONAL SOCIETY of AUTOMATION (ISA) ISA Hydraulic Systems

INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)

Substitution of Codes The Crane Contractor may select other DIN, FEM, JIS, ISO or BSI codes as applicable as the basis of Crane design in lieu of the referenced codes, provided the Contractor can show, by certification or industry publications, that these codes are equivalent to (meets or exceeds) the codes, with the exception of AISC, ASTM, AWS, NEMA, NFPA, and OSHA which shall govern in any case. If the Contractor selects one of these codes for design of the Cranes, the Contractor shall provide three current English language copies of the code, within 30 days after contract award IAW CDRL A019. Once a code is selected for design, it shall be used for all portions of the Cranes.

Example of List of Codes Used in Industry Procurement Specifications Unless otherwise noted, the applicable recommendations of the following organizations shall be used. Unless otherwise noted, ‘National’ means USA.

System Description and Scope of Supply Reference Section C of the contract.

Minimum Criteria The criteria specified herein shall be considered the minimum acceptable. If, in the Contractor’s opinion, any of the criteria specified herein or in the referenced standards is in any way inadequate or insufficient for the intended use, it shall be the Contractor’s responsibility to use more stringent criteria.

Except where otherwise specified, the Contractor shall furnish all materials, equipment, tools, labor, and incidentals necessary to fully and completely finish the project according to the true intent and meaning of this Specification and drawings, even though every item or activity is not particularly mentioned or shown in this Specification or drawings.

The Contractor shall remain responsible for adequacy and safety of the design, fabrication, supply, installation, transportation, commissioning, and testing of the equipment specified herein while adhering to the minimum criteria set forth in the Specifications.

Safety Design Criteria A single electric (power or control) or hydraulic component failure or malfunction shall not damage the Crane or injure personnel.

Where possible, component failure or malfunction shall safely stop the Crane operation. Where this is not possible, a redundant system shall be supplied. The redundant system shall both safely stop the Crane and prevent operation until maintenance personnel make corrections.

A means shall be provided so maintenance personnel may routinely check each redundant or backup system. The checking procedure shall be included in the maintenance manual.

No Crane component shall change state as a result of a power failure. Powering or repowering the Crane or any system within the Crane shall not result in any unanticipated or potentially unsafe motion or condition.

Design Requirements Basic Crane design shall be a twin-box girder with a rope-towed trolley, catenary trolleys, and fleet-through main hoist. The trolley, boom, and main hoist machinery shall be enclosed in a separate machinery house. The machinery house shall include separate rooms for the hoist machinery and all electronic equipment. The electronic control room shall be separately climate controlled. Entrance and egress to the Cranes shall be via both a combination of ladders and stairways, and an elevator on the same landside leg as the cable reel, unless approved otherwise by the Government.

The Cranes shall be equipped with a spreader capable of lifting a single 20-foot container, twin-20-foot containers, single 40-foot container, and a single 45-foot container. Crane shall have a means of stowing hatches on the landside of the Crane within the backreach of the trolley girder, so as not to infringe on the operating area between the Crane legs. Provisions also shall be made to lift other cargo using temporary slings.

The Crane shall be designed to operate in an outdoor, corrosive marine environment with an ambient temperature range of 20 °F to 110 °F (-7 °C to 43 °C).

Each Crane shall have a Crane number independent of the manufacturer’s serial number. The Crane numbers format shall be the year of manufacture-001 and -002, e.g. 2020-001 and 2020002 if the Cranes are built in 2020.

The main characteristics of the Cranes are as follows. See the Appendix A2, Crane and Ship Clearance Drawing, for additional requirements.

Capacity Capacity below the spreader

Principal Dimensions

Allowable Crane Loads on Wharf Maximum Allowable Service (ASD) Level Wheel Loads

Maximum Allowable Strength (LRFD) Level Wheel Loads

Refer to Appendix A4, drawing S-002 for additional maximum crane loads to the wharf, including crane rail lateral loads, crane stowage pin, and crane stop loads.

Performance Requirements Performance requirements for the Cranes shall be as follows:

Minimum Hoist High Speeds:

Hoist Acceleration/Deceleration

Minimum Trolley Speed:

With Rated Load 600 ft/min (180 m/min) Trolley Acceleration/Deceleration

Unique Identifier Tags The Contractor shall assign unique identifiers to the container Crane and the in-house service cranes in accordance with DFARS 252.211-7003. The Unique Identification Tags shall be attached to the outside of the main electrical disconnect panel of the respective Crane.

Essential Repair Parts The Contractor shall provide the parts defined in Section 3.8.6.3 and those listed in the Appendix E, Essential Repair Part Stockage List IAW CDRL A020.

After the completion of the design, the Contractor shall provide a list of any additional spare parts with prices for the Government’s consideration and potential purchase.

RESERVED

RESERVED

RESERVED

RESERVED

Existing Conditions Prior to installation, the MOTCO pier shall be inspected by the Contractor the Contracting Officer Representative (COR) to document the condition of all existing crane installation and record any existing damage. Upon completion of the work, the Contractor COR shall again inspect the MOTCO pier to determine the extent of any damage that may have occurred as a result of work performed under this contract. Any damage to the MOTCO pier as a result of either Crane installation and/or testing shall be the responsibility of the Crane Contractor for repair of any damage under this contract. If the Contractor fails or refuses to repair the damage promptly, the Government may have the necessary work performed and charge the cost to the Contractor.

Contractor Requested Engineering Changes All Contractor requested engineering changes must be submitted to the Government on the “Contractor Change Request Form” .

Warranty See Section I of the contract for warranty information.

RESERVED

Design Life A design life of 40 years (2,000,000 trolley single cycles) and 5,000 hours of operation per year shall be used. This does not necessarily mean that the Crane will no longer be fit for its purpose at the end of that period or that it will continue to be serviceable for that length of time without adequate and regular inspection and maintenance.

Components in the systems for the major Crane motions shall be designed for at least the following minimum design lives, and utilization, loading, and mechanism classifications according to the latest edition of FEM 1.001 as shown in the table below. Design lives shown are in operating hours of motion for the components in question.

Minimum Design Life and Mechanism Classifications The design life requirements are not intended to preclude the use of certain wearing components, such as seals, twistlocks, or wire rope, which as part of normal maintenance may require replacement prior to the expiration of the Crane design life. Wearing components, along with their associated design life and maintenance intervals, shall be suggested by the Contractor and are subject to the Government’s approval. Wearing parts are not intended to cover items such as gears, bearings, sheaves, drums, shafts, and other mechanical components which shall be designed to last the design life of the Crane.

Minimum Support Period All components, including electrical components such as, but not limited to, inverters, convertors, PLCs, I/O components, and control software, used on the Crane shall be supported by the component or software manufacturer for a period of at least five (5) years after delivery of the Crane unless otherwise specifically approved in writing by the Government.

Computer components and supporting software not required for the Crane control system shall be supported by the component or software manufacturer for a period of at least five (5) years after delivery of the Crane unless otherwise specifically approved in writing by the Government.

The Contractor shall present to the Government upon request certification from the component or software manufacturer, that the component or software will be supported by the manufacturer for these minimum periods.

Duty Cycles and Load Spectra The duty cycles and load spectra described in this section shall be the minimum applied to all mechanical and electrical systems. Where the use of a particular system or supporting system warrants the use of more stringent criteria, those criteria shall be used.

Main Hoist and Trolley Design Duty Cycle The main hoist and trolley design duty cycle shall be used for the purpose of calculating times and equipment designs for the main hoist and trolley drives and shall be based on the following:

Handling the rated Duty Cycle (DC) container(s) Each motion accelerates, runs, and decelerates at the maximum rates and speeds for which it is designed Main hoist and trolley travel motions occur simultaneously without regard to Crane or ship clearances Ambient temperature is the maximum value defined in Section 2.7.6 The cycle is repeated indefinitely The wind load is 50% of the operating wind load (WLO) in the trolley travel direction The sequence of operations for the main hoist and trolley design duty cycle shall consist of the following steps repeated indefinitely:

Engage container for 2 s Hoist 15 m and travel 45 m waterside Lower 2 m to cell guides Enter cell guides for 2 s Lower 12 m Disengage container for 2 s Hoist 14 m Travel 3 m waterside Lower 2 m to cell guides Enter cell guides for 2 s Lower 12 m Engage container for 2 s Hoist 14 m Travel 43 m landside and lower 13 m Lower 2 m to chassis Disengage container for 2 s Hoist 1 m Travel 5 m landside Lower 1 m to container Where times are shown for operations, these are theoretical dwell times and shall be the only dwell times considered in calculating the design duty cycle.

Gantry Drive Design Duty Cycle The gantry design duty cycle shall be used for the purpose of calculating times and equipment designs for the gantry drive and shall consist of accelerating, traveling a total of 275 m (900 ft) along the wharf, and decelerating, all against the operating wind load (WLO) without intermediate stops. The cycle shall be performed once.

Boom Hoist Design Duty Cycle The boom hoist theoretical duty cycle shall be used for the purpose of calculating times and equipment designs for the boom hoist drive and shall be based on the following steps which shall be repeated twice in immediate succession with no dwell time:

Step 1: Raise the boom from horizontal to the ship clearance position (45 degrees) Step 2: Lower the boom to the horizontal position Rope Inspection Duty Cycles To allow for the requirements of rope inspection and lubrication at slow speeds, all systems with wire rope reeving shall be subject to an additional duty cycle where the full range of motion will be traveled in the least favorable empty spreader condition at a speed not exceeding 15% of the maximum rated speed uninterrupted for a period of at least 15 minutes. Breaks between each 15minute period of motion shall not exceed 5 minutes in duration.

Main Hoist Load Spectrum Components in the main hoist system, including reducers, bearings, shafts, reeving, etc., shall be designed using a load spectrum at least as severe as defined in the table below.

Speeds shall be based on the appropriate main hoist speed for the defined load.

Total

Table—Main Hoist Load Spectrum Trolley Load Spectrum Components in the trolley system, including reducers, bearings, shafts, reeving, etc., shall be designed using a load spectrum at least as severe as defined in the table below.

Maximum motor torque below means the maximum torque the motors develop when accelerating the trolley with the maximum rated load against WLO.

Rated motor torque below means the highest torque the motors develop when the trolley travels steadily at rated speed with the maximum rated load against 50% WLO.

Speeds shall be based on the trolley rated top speed.

Total

Table—Trolley Load Spectrum Gantry Drive Load Spectrum Components in the gantry drive system, including reducers, bearings, shafts, etc., shall be designed using a load spectrum at least as severe as defined in the table below.

Maximum motor torque below means the maximum torque the motors develop when accelerating the gantry with the maximum rated load against WLO.

Rated motor torque below means the highest torque the motors develop when the gantry travels steadily at rated speed with the maximum rated load against 50% WLO.

Speeds shall be based on the gantry rated top speed.

Total

Table—Gantry Drive Load Spectrum Boom Hoist Load Spectrum Components in the boom hoist system, including reducers, bearings, shafts, reeving, etc., shall be designed using a load spectrum at least as severe as defined in the table below.

Maximum motor torque below means the maximum hoisting torque the motors develop when lifting the boom from the level position.

Minimum motor torque below means the torque the motors develop when hoisting the boom steadily at rated speed at the ship passing angle (45 degrees).

Speeds shall be based on the boom hoist motor design speed.

Total

Table—Boom Hoist Load Spectrum Other Duty Cycles and Load Spectra Where components or systems support a primary system with a duty cycle and/or load spectrum listed above, those components or systems shall have a duty cycle and/or load spectrum at least as severe as the same duty cycle and/or load spectrum as their primary system where applicable.

The duty cycle for the trolley cable reel shall be at least as severe as for the main hoist.

The duty cycle for the gantry cable reel shall be at least as severe as the gantry drive.

The duty cycle for the hoist micro-motions shall be at least such that the system is moved through half of the full range of motion and back to the home position twice during each cycle of the hoist and trolley; once with the load and once with an empty spreader. The loads and cycle ratios shall be the same as defined in the main hoist load spectrum; see Section 1.12.1.

Duty Cycle Analysis Requirements The Contractor shall submit a duty cycle analysis for each duty cycle defined above IAW CDRL A021. Where motors or drives for a given motion are to be supplied by the electrical drive vendor, the analysis for those duty cycles shall be prepared by the Crane control supplier and shall verify the adequacy of the selected equipment for the specified cycles.

The Contractor shall provide an analysis showing the peak Crane power demand and RMS power demand, including lighting, ventilation, air-conditioning, and all other house loads, for the design duty cycle described in Section 1.12.1.

Each analysis shall be performed on a computer. Each submittal shall include, but not be limited to, the computer input and output, the program logic and complete documentation, and catalog information which substantiates the equipment design.

Load Spectra and Design Life Analysis Requirements Where component design lives are analyzed using a defined load spectrum, Miner’s rule shall be used to combine the lives of the load cases and develop the overall design life Crane Modes Primary Operating Mode The primary operating mode of the Crane shall be under the manual control of the operator located in the operator’s cabin on the main trolley.

The primary operational function of the crane will be to load and discharge container ships. The boom will be in the fully lowered position. The crane will handle containers, hatch covers, and lashing gear. A secondary function will be the handling of non-containerized cargo. For these functions, the main hoist and trolley drives shall be fully operational simultaneously.

Semi-Automated Operating Mode In the semi-automated operating mode, the main hoist and trolley will move containers between designated truck lanes and a designated position over the vessel automatically using the optimum clear path. Landing of the lifting system and operation in the ship’s cell guides shall be manual.

Once the lifting system arrives at the designated position over the vessel, the crane operator will control the trolley and main hoist. The operator will also have manual control of the spreader functions and the hoist micro-motions; however, these functions shall be automated to the extent possible.

Once clear of the vessel, the operator may signal the Crane to take automatic control in which case the trolley and main hoist will automatically perform all motions to an adjustable distance above the designated truck lane.

When the operator maintains manual control, he shall be able to place the trolley and hoist at any operating location. Interlocks shall prevent the hoist or trolley moving such that the lifting system or its load will collide with the Crane structure, the vessel, or the vessel stacks.

The Crane operator will use manual control to handle hatch covers, cargo beam loads, and oversize or over-height container loads.

Passing Mode The Crane shall have a passing mode to allow the Crane to gantry past obstructions on the vessel such as the ship superstructure or ship’s gear. In the passing mode, the trolley will be in the stowed position. The main hoist lifting system will be stowed above the portal tie beam level. The boom will be raised to the passing position.

Stowed Mode The Crane shall have a stowed mode in which the trolley will be in the stowed position. The main hoist lifting system will be stowed above the portal tie beam level. The boom will be raised to the stowed position. The gantry stowage pins may or may not be engaged into stowage pin pockets on the wharf.

In the stowed mode, the boom will be partially raised to about 45 degrees, for ship clearance. The trolley will be at the stowed position. Trolley drive shall not be operational. The main hoist shall be operations with an unloaded spreader only. The gantry shall be fully operational.

Cargo Beam Mode The Crane shall have a cargo beam mode in which the main hoist is used with the cargo beam.

Speeds and accelerations in the cargo beam mode will be limited to an adjustable setting.

Maintenance Mode The Crane shall have a maintenance mode of operation. The Crane shall be fully operational in maintenance mode but shall implement features that warn and protect maintenance personnel who may be working in diverse and/or hazardous areas of the Crane. The intent is to warn personnel who may not be otherwise aware of impending crane motion and provide time for the personnel to get safely clear of the machinery.

A keyed switch in the primary operator’s cabin and the electric room shall turn this maintenance mode on or off.

While in maintenance mode, the request for any Crane motion (hoist, trolley, boom, or gantry) shall be followed by an adjustable time delay before any motion takes place. The delay is to be initially set at 15 s.

During this time delay period, audio and visual alarms shall warn of pending motion. As a minimum, the public-address system shall produce a unique continuous warning tone for 3 s and a brief audio alarm (chirp) every 3 s thereafter, and red strobe lights shall be energized in the electric room, the machinery house, and under the operator’s cab.

During motion and for an adjustable period, initially set to 15 s, after the cessation of motion in maintenance mode, the visual alarms shall continue and brief audio alarm (chirp) shall sound every 3 s. During this period after the cessation of motion, motion can resume again without delay or further warning. After this period expires, the audio and visual alarms will cease and any subsequent motion in maintenance mode will be subject to the time delay and alarms described above.

Motion commands from any maintenance station, including the gantry control station, shall at all times be subject to these warnings and delays, regardless of the position of the maintenance mode switch.

Limping Mode(s) In addition to the modes described above, the Crane shall be designed to continue container handling operations in a reduced manner should one or more systems not work as intended. These reduced functioning modes are referred to as limping modes and shall allow a Crane to continue operations or move to a clear position under its own power in as safe and efficient a manner as possible until the problem is repaired.

The Crane shall enter the appropriate limping mode automatically and both the operator and maintenance personnel shall be notified that the Crane has entered a limping mode and the applicable restrictions.

The Crane shall communicate this reduced functionality to the CMS.

PRODUCTS

Materials Materials shall be as specified herein. Materials not specified shall be suitable for the service intended only after review and approval by the Engineer of Record (EOR). Use of international equivalent to the specified materials shall require approval from the Government. All materials shall be new and unused and shall be suitable for exposure to the marine environment and the temperatures defined in this Specification. Materials shall be free from all defects and imperfections that might affect the serviceability or appearance of the finished product. Finished materials shall, at all times, be kept clean, protected from damage, and free from scale, rust, and contamination. Cast or wrought aluminum shall not be permitted for structural or machinery applications.

Ductile Materials Unless where specifically required, all nonredundant components directly supporting the load shall be of ductile materials. These components include, but are not limited to, all hoist drive gear reducer housings, motor frames and end bells, flanged adapters, and brake wheels and discs. For the purposes of this Specification ductile is defined as having a minimum elongation of 5% in 2 in (50 mm). Furthermore, all shafts, keys, gears, torque carrying coupling components, and wire rope drum shall be steel.

Structural Steel Structural steel shall conform to material requirements, section A3, of the AISC Specification, except as modified in this section.

(a) Structural steel subjected to a calculated tensile stress, except stairs, ladders, platforms and walkways, and pipes and tubes, shall conform to ASTM A709/A709M, including supplementary requirements:

- S60, Frequency of Tension Tests

- S93, Limitation on Weld Repair and to ASTM A6/6M, including supplementary requirements:

- S18, Maximum Tensile Strength (Grades 50 and 50W).

Structural steel made to another specification may be substituted for ASTM A709 providing it conforms to the specified requirements of ASTM A 709 and the other requirements of these Specifications.

Structural steel for the Crane primary structure, including plates, rolled sections, and rolled shapes and tubes shall have a minimum thickness of 5/16 in (8 mm) unless otherwise noted.

The critical end properties of parts requiring heat treatment by other than the prime mill source and the method and basis for acceptance or rejection of parts requiring non-destructive testing shall be shown on the drawings.

All fracture critical members (FCMs) material, plates, and sections shall comply with AWS D1.5, Section 12. The term "Engineer" in the code shall mean the Contractor's responsible Structural Engineer.

Structural Pipes and Tubes Primary structure pipes and tubes shall meet the requirements of one of the following:

API 5L, PSL2 — For line pipe (such as spiral welded pipes), which shall comply with the material toughness requirements of the API 5L specification, section 9.8, “CVN impact test for PSL 2 pipe;” test temperature shall be 0° C (32° F).

ASTM A1085 — For round HSS, including requirements for CVN testing.

ASTM A500 Grade B — For rectangular HSS or round ancillary (non-primary-structure) components.

High Strength Bolts, Nuts, and Washers Structural Connections Structural connections shall be designed in accordance with AISC-360.

Welding procedures and qualifications shall be in accordance with the requirements of AWS D1.3 and D1.1 as required by SD-06.8.

Structural bolted connections shall be designed and installed in accordance with RCSC Specification for Structural Joints Using High-Strength Bolts.

Mechanical Bolted Fasteners All high strength bolts, nuts, and washers shall be of U. S. manufacture, shall be plain (non-coated), and shall be permanently marked (by embossing or indentation) with the ASTM or SAE designation, grade, and manufacturer's identification. Bolt and nut threads shall be matched (oversize tapping shall not be permitted). Hardened washers shall be used under the element being turned.

Structural bolt assemblies made with ASTM F3125 Grade A325 or A490 bolts shall be kept separated by production lot. Mixing of bolts and nuts from different production lots, even of the same diameter, grade, and length, shall not be permitted.