TSpecs_Chickamauga_FMB_3-25-2016.pdf

Nashville District

FLOATING MOORING BITTS

Chickamauga Lock

Tennessee River

Technical Specifications

March 2016

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Chickamauga Floating Mooring Bitts

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 59 29

FLOATING MOORING BITTS

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

1.4 SHOP DRAWINGS

1.5 QUALIFICATION OF WELDERS AND WELDING OPERATORS

1.6 DELIVERY, STORAGE, AND HANDLING

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Bolts, Nuts, Washers and Screws

2.1.2 Anti-Seize Thread Lubricant

2.2 MOORING BITT TANK STRUCTURE

2.2.1 Mooring Posts

2.2.2 Structural Steel

2.2.3 Steel Vent Pipe

2.3 MOORING BITT GUIDE BLOCKS

2.4 RETAINING EQUIPMENT

PART 3 EXECUTION

3.1 FABRICATION

3.1.1 Steel Fabrication

3.1.1.1 Steel Welding

3.1.2 Dimensional Tolerances

3.1.2.1 UHMW Guide Blocks

3.1.3 Finished Surfaces

3.1.4 Threaded Connections

3.2 ASSEMBLY

3.2.1 Shop Assembly

3.2.2 Threaded Connections

3.3 TESTS, INSPECTIONS, AND VERIFICATIONS

3.3.1 Nondestructive Testing

3.3.2 Tests of Floating Mooring Bitts

3.3.2.1 Weight Test

3.3.2.2 Mooring Bitt Pressure Test

3.4 INSTALLATION

-- End of Section Table of Contents --

SECTION 35 59 29 Page 1 Mar 25, 2016

SECTION 35 59 29

FLOATING MOORING BITTS

PART 1 GENERAL

1.1 SCOPE

This section covers all operation in connection with fabricating, testing and delivering complete floating mooring bitt assemblies to Chickamauga Lock.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM A193/A193M (2015) Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service and Other Special Purpose Applications

ASTM A325 (2014) Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

ASTM A449 (2014) Standard Specification for Hex Cap Screws, Bolts, and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use

ASTM A519 (2006) Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing

ASTM A53/A53M (2012) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A572/A572M (2015) Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel

ASTM D 4020 (2005) Ultra-High-Molecular-Weight Polyethylene Molding and Extrusion Materials

ASTM D 638 (2008) Standard Test Method for Tensile Properties of Plastics

ASME INTERNATIONAL (ASME)

ASME B46.1 (2002) Surface Texture, Surface Roughness, Waviness and Lay

SECTION 35 59 29 Page 2 Mar 25, 2016

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2015) Structural Welding Code - Steel

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. Submit the following for review / approval:

SD-01 Preconstruction Submittals

SD-02 Shop Drawings

Shop Drawings; G

Shop drawings shall be submitted and approved prior to fabrication.

SD-06 Test Reports

Tests, Inspections, and Verifications

Certified test reports for materials shall be submitted with all materials delivered to the shop.

Weight Test;

Mooring Bitt Pressure Test; G

Contractor will report, to the Contracting Officer's Representative (COR), the results of the pressure test for each mooring bitt tank.

SD-07 Certificates

Qualification of Welders and Welding Operators; G

SD-08 Manufacturer's Instructions

UHMW Polyethylene Material; G

Manufacturer specified Ultra-high-molecular-weight (UHMW) Polyethylene material, including physical properties, for the mooring bitt guide blocks shall be submitted prior to the installation of the UHMW guide blocks.

1.4 SHOP DRAWINGS

Shop drawings for metalwork, machine work and mooring bitt tank work shall include catalog cuts, templates, welding details, fabrication and assembly details and type, grade and class of material as appropriate. All welds are typical. Elements of fabricated items and welds inadvertently omitted on contract drawings shall be detailed by the fabricator and indicated on the detail drawings. Bid shall include all welds and items that are inadvertently omitted on the contract drawings. Fabrication shall not be started until shop drawings are approved by the Contracting Officer's Representative (COR).

SECTION 35 59 29 Page 3 Mar 25, 2016

1.5 QUALIFICATION OF WELDERS AND WELDING OPERATORS

The Contractor shall certify that the qualification of welders, welding operators, and tack welders who will perform welding have been qualified for the particular type of work to be done in accordance with the requirements of AWS D1.1/D1.1M Section 4, prior to commencing fabrication. The certificate shall list the qualified welders by name and shall specify the code and procedures under which qualified and the date of qualification. Prior qualification will be acceptable within the preceding six months. The Contractor shall require welders to repeat the qualifying tests when their work indicates a reasonable doubt as to proficiency.

Those passing the requalification tests will be recertified. Those not passing will be disqualified until passing. All expenses in connection with qualification and requalification shall be borne by the Contractor.

1.6 DELIVERY, STORAGE, AND HANDLING

Materials and shop fabricated components shall be shipped, handled, and stored in a manner to prevent permanent deflection, distortion, or other damage. Delivery shall be made from Monday-Thursday between the hours of 0700 and 1500. Notify lock personnel two weeks prior to the delivery.

Delivery the floating moorings to the following address:

Chickamauga Lock 5400 Lake Resort Dr.

Chattanooga, TN 37415 Phone: 423-875-6230

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Bolts, Nuts, Washers and Screws

Bolts, nuts, washers and screws shall be galvanized. Bolts and screws shall be in accordance with ASTM A325, ASTM A449 or ASTM A193/A193M Gr. B7.

2.1.2 Anti-Seize Thread Lubricant

Shall be Loctite Corporation's Nickel Anti-Seize Lubricant, Product Number 771 or equal. Anti-seize thread lubricant shall consist of mineral oil, nickel and graphite and be in paste form. It shall prevent galling of threads up to temperatures of 1400 deg F. The lubricant will be compatible with carbon steels. Apply anti-seize thread lubrican to all nuts and screws.

2.2 MOORING BITT TANK STRUCTURE

2.2.1 Mooring Posts

ASTM A519. The minimum yield strength shall be 50,000 psi.

2.2.2 Structural Steel

Unless otherwise noted, structural steel shall be ASTM A572/A572M, Gr. 50 as specified on contract drawings.

SECTION 35 59 29 Page 4 Mar 25, 2016

2.2.3 Steel Vent Pipe

Vent pipe shall be ASTM A53/A53M.

2.3 MOORING BITT GUIDE BLOCKS

The guide blocks for the mooring bitts shall be fabricated from an Ultra High Molecular Weight (UHMW) Polyethylene Material. It shall be made using only 100 percent virgin UHMW Polyethylene resin in full compliance with ASTM D 4020 Standard. UHMW shall not become embrittled or distorted that could lead to the prevention of mooring bitts moving up and down the guide recesses. They shall be environmentally friendly and have good abrasion resistance with a low friction coefficient. Material used for the guide blocks shall not chip, peel, crack or rot.The UHWM guides shall have approximately 3000 psi yield strength in accordance with ASTM D 638. Flat head socket screws shall be used to attach the UHMW mooring bitt guide blocks to the steel mount blocks.

2.4 RETAINING EQUIPMENT

Unless otherwise noted, the stop bracket, stop hook and pin for stop bracket will be reused. These items may need to modified by Government personnel to the the mooring bitts at the upper limit.

PART 3 EXECUTION

3.1 FABRICATION

3.1.1 Steel Fabrication

Material must be straight before being laid off or worked. If straightening is necessary it shall be done by methods that will not impair the metal. Sharp kinks or bends shall be cause for rejection of the material. Material with welds will not be accepted except where welding is definitely specified, indicated or otherwise approved. Bends shall be made by approved dies, press brakes or bending rolls. Where heating is required, precautions shall be taken to avoid overheating the metal and it shall be allowed to cool in a manner that will not impair the original properties of the metal. Proposed flame cutting of material shall be subject to approval and shall be indicated on detail shop drawings.

Shearing shall be accurate and all portions of the work shall be neatly finished. Corners shall be square and true unless otherwise shown.

Re-entrant cuts shall be filleted to a minimum radius of 3/4 inch unless otherwise approved. Finished members shall be free of twists, bends and open joints. Bolts, nuts and screws shall be tight.

3.1.1.1 Steel Welding

Perform steel welding, welding inspection, and corrective welding, in accordance with AWS D1.1/D1.1M.

3.1.2 Dimensional Tolerances

Dimensions shall be within the tolerances indicated on the drawings or as specified in the particular section of this specification for the item of work. Where tolerances are not specified or shown, an allowable variation of 1/32 inch is permissible in the overall length of component members with both ends milled and component members without milled ends shall not deviate from the dimensions shown by not more than 1/16 inch for members 30

SECTION 35 59 29 Page 5 Mar 25, 2016 feet or less in length.

3.1.2.1 UHMW Guide Blocks

Contractor shall attach the UHMW guides to the steel mounting blocks as indicated on the drawings. UHMW guide blocks on each side of the mooring bitt shall be in plumb alignment to ensure proper, uninhibited operation.

The UHMW Polyethylene Material shall be cut, ground and machined as to the dimensions indicated on the drawings. Finished contact or bearing surfaces shall be true and exact.

3.1.3 Finished Surfaces

Surface finishes indicated or specified shall be in accordance with ASME B46.1. Values of required roughness heights are arithmetical average deviations expressed in micro inches. These values are maximum. Lesser degrees will be satisfactory unless otherwise indicated. Compliance with surface requirements shall be determined by sense of feel and visual inspection of the work compared to Roughness Comparison Specimens in accordance with the provisions of ASME B46.1. Values of roughness width and waviness height shall be consistent with the general type of finish specified by roughness height. Where the finish is not indicated or specified, it shall be that which is most suitable for the particular surface. Flaws such as scratches, ridges, holes, peaks, cracks or checks which will make the part unsuitable for the intended use will be cause for rejection.

3.1.4 Threaded Connections

Bolt Holes - Bolt holes shall be accurately located, smooth, perpendicular to the member and cylindrical. Bolt holes shall be drilled or subdrilled and reamed in the shop and shall not be more than 1/16 inch larger than the diameter of the bolt.

Screw Holes - Screw holes shall be accurately located, smooth, perpendicular to the member and cylindrical. Holes shall be drilled and tapped as indicated on the drawings.

3.2 ASSEMBLY

3.2.1 Shop Assembly

Shop assembly requirements for the floating mooring bitts, and appurtenant items shall be as shown on the drawings and specified herein. The design shown contemplates, that the floating mooring bitts be fabricated and shipped to the job site as complete units. If the Contractor proposes to sectionalize the mooring bitts, drawings showing the proposed sectionalization shall be submitted for approval prior to preparation of the detailed shop drawings. Each unit furnished shall be assembled in the shop to determine the correctness of the fabrication and matching of the component parts unless otherwise specified. Tolerances shall not exceed those shown. Each unit assembled shall be closely checked to ensure that all necessary clearances have been provided and that binding does not occur along any face. The Contractor shall ascertain that all dimensions are carefully maintained and any errors or defects found shall be promptly corrected by the Contractor at no additional cost to the Government.

SECTION 35 59 29 Page 6 Mar 25, 2016

3.2.2 Threaded Connections

Bolted Connections - Bolts, nuts and washers shall be of the typed specified or indicated. All bolt heads and nuts shall be equipped with washers. All external threads shall be coated with and anti-seize lubricant. Bolts shall be tight.

Screw Connections - Screws shall be of the type specified or indicated.

All hex head cap screws shall be equipped with washers. All external threads shall be coated with an anti-seize thread lubricant. Hex head and flat countersunk head screws shall be tight.

3.3 TESTS, INSPECTIONS, AND VERIFICATIONS

The floating mooring bitts shall not be shipped from the fabricator's shop until the testing has been approved. The COR shall inspect the floating mooring bitts at the contractor shop prior to painting and shipping. Please notice the COR at least 2 weeks in advance prior to the shop testing / inspection.

3.3.1 Nondestructive Testing

The floating mooring bitts shall not be shipped from the fabricator's shop until the testing has been approved. When doubt exists as to the soundness of any material part, such part may be subjected to any form of nondestructive testing determined by the Contracting Officer. This may include ultrasonic, magnetic particle, dye penetrant, radiographic or any other test that will thoroughly investigate the part in question. The cost of such investigation shall be borne by the Government. Any defects shall be cause for rejection and rejected parts shall be replaced and retested at the Contractor's expense.

3.3.2 Tests of Floating Mooring Bitts

3.3.2.1 Weight Test

The Contractor shall provide the total weight of a complete floating mooring bitt to the Contracting Officer.

3.3.2.2 Mooring Bitt Pressure Test

Mooring bitt tanks shall be pressure tested during shop fabrication for tightness of all welds by applying an internal air pressure of (min.) 5 psi pounds per square inch. All seams shall be tested with a soap and water solution to detect any minor leaks. All leaks shall be repaired by welding. Peening to close leaks is unacceptable. Failing mooring bitts shall be repaired and retested without cost to the Government. Each complete floating mooring bitt shall be assembled and tested in the shop in the presence of the Contracting Officer unless otherwise directed. Waiving of tests will not relieve the Contractor of responsibility for any fault in operation, workmanship or material that occurs before the completion of the contract or guarantee.

3.4 INSTALLATION

Field installation shall be done by Government personnel.

SECTION 35 59 29 Page 7 Mar 25, 2016

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SECTION 35 59 29 Page 8 Mar 25, 2016

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