Exhibit B-Specifications.pdf

DECEPTION PASS STATE PARK

MARINE MAINTENANCE VESSEL FLOAT REPLACEMENT

FLOATING DOCK SYSTEM – 35 51 13 - 1

SECTION 35 51 13 – FLOATING DOCK SYSTEM

PART 1 - GENERAL

1.1 SCOPE

A. FLOATING DOCK consists of design, fabrication, and installation of a floating dock system, complete and ready to use, including floatation, steel framework, connection hardware, and dock accessories. Accessories shall include all items on the dock that are not considered a structural component of the float system, such as cleats.

B. The layout and functional dimensions of the dock system are indicated on the Drawings. The dock system shall be designed by the contractor to meet all requirements of the Drawings and these Specifications. Substitution of manufacturers industry standard products that conform to these specifications may be submitted for approval.

1.2 RELATED SECTIONS

A. Section 01 33 00 – Submittal Procedures

B. Section 01 35 43 – Environmental Controls

C. Section 31 62 16 – Steel Pipe Piles

1.3 REFERENCES

A. References shall be the latest edition available as of the date of the invitation to bid unless otherwise specified. The following standards are hereby incorporated in this Specification to the extent referenced. The publications are referred to in the text by the basic designation only.

B. Design Standards:

Steel American Institute of Steel Construction (AISC) "Steel Construction Manual”.

Structural Loads American Society of Civil Engineers (ASCE) 7-16 “Minimum

Design Loads for Buildings and Other Structure”.

C. American Society for Testing and Materials (ASTM)

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ASTM A 36 Standard Specification for Structural Steel

ASTM A 123 Standard Specification for Zinc (Hot-Dip Galvanized) C o a t i n g s on Iron and Steel products

ASTM A 153 Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A 500 Standard Specification for Cold Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

ASTM A 572 Standard Specification for High Strength Low-Alloy Columbium-Va-nadium Structural Steel

ASTM A 780 Standard Practice for Repair of Damaged Hot-Dip Galvanized Coat-ings

ASTM C 578 Standard Specification for Rigid, Cellular Polystyrene Thermal Insula-tion

ASTM F 3125 Standard Specification for High Strength Structural Bolts, Steel and Alloy Steel, Heat Treated, 120 ksi (830 MPa) and 150 ksi (1040 MPa) Minimum Tensile Strength, Inch and Metric Dimensions.

D. American Welding Society (AWS)

AWS D 1.1 Structural Welding Code – Steel

1.4 SYSTEM DESCRIPTION: DESIGN CRITERIA

A. Information presented herein is based upon the best estimate of those factors that reasonably can be expected to affect the design, performance, and durability of the dock system. The proposed system shall be subject to thorough engineering analysis using all relevant criteria that could affect the stability, structural integrity and durability of the pier system based on the performance criteria as presented on the drawings and in these Specifications.

B. Final calculations shall demonstrate that the dock system using the criteria specified as minimum requirements, is designed to withstand the required loading without damage. The design loads, load combinations and allowable stresses are described herein.

C. The layout and principal dimensions are indicated on the Drawings. The Contractor shall provide a system that conforms to the layout and dimensions indicated in the Drawings, and the provisions of these Specifications. Minor deviations in dimensions to accommodate manufacturer’s industry standard products are acceptable.

D. The dock system shall be made of modular galvanized steel fabrications. Modules shall consist of a molded FRP panel deck supported by steel framing and encased polystyrene foam pontoons.

The foam core shall be encapsulated in a roto-molded polyethylene shell to prevent direct contact between the foam and water and protect it from damage. Modules shall be connected to form a

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continuous float by bolted connections capable of transmitting all loads imposed upon individual modules, or combinations of modules, to the dock restraint system.

E. The freeboard under dead load only at the time of dock acceptance shall be 35 inches with a tolerance of +/- 1 inch. Freeboard under combined dead load plus uniform live load, shall not be less than 10 inches.

F. The float system shall be designed to maintain at least one foot of clearance under the floats during the extreme low tide noted on the drawings.

G. The dock system shall be designed to float level under dead load. The deck of the float modules shall be level and flush upon completion within the following tolerances.

1. Dead load deck surface slope:

a. Transverse Direction: Not more than 1:50 (2%).

b. Longitudinal Direction: Not more than 1 inch per 10 feet of length, and cumulatively maintain deck within specified freeboard limits.

2. Dead load, uniform live load, and live load from gangway

a. Transverse Direction: Not more than 2%

b. Longitudinal Direction: Not more than 4%

3. Dead load and live point load located in the middle half of the transverse direction of the float

a. Transverse Direction: Not more than 4%

b. Longitudinal Direction: Not more than 4%

4. Vertical height difference between adjoining modules: Maximum ¼.

H. Special modules shall be designed to support the superimposed dead loads imposed by gangways, railings, dock restraint connections, or other dock accessories. Modules with superimposed loads shall have the same freeboard as modules with no such loading, so that there will be no residual stresses when the modules are interconnected and to ensure that the deck is level within the specified tolerance. Individual float module depth shall be designed to provide support for concentrated loads to ensure that the floating dock system maintains the specified freeboard within the required tolerance.

I. The dock shall be designed to be restrained as indicated on the Drawings. The pile guides shall incorporate removable sections so that the float can be disconnected from the piles and floated away from the berth.

1.5 DESIGN LOADS

A. Dead load shall consist of the weight of dock pontoons, framing, decking, restraint connections, miscellaneous fittings, and all other permanently attached accessories such as cleats, bumpers, etc. Contractor shall exercise care to be sure that all dead loads are accurately determined and accounted for, including superimposed gangway and restraint loads, and manufacturing tolerances that affect the final freeboard.

B. Minimum Live Loads shall consist of:

1. Uniform Live Load (ULL) of 40 pounds per square foot of deck.

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2. Concentrated Live Load (CLL) of 500 Pounds applied at any location on the dock over a 2 foot by 2-foot area not closer than 2 feet from any edge of the float.

3. Wind Load (WL) due to wind speed of 100 mph, exposure D, on profile area in any direction on the projected area of the dock at dead load freeboard.

4. Vertical Wave Load (VWL) due to hogging/sagging:

a. Wave height of HS = 1.0 ft.

b. Wave period equal to 3 seconds.

c. Wave direction (propagation) parallel to longitudinal axis of dock.

5. Impact Load (IL) due to impact of a berthing vessel:

a. Vessel docking weights of 63 tonnes.

b. Vessel approach at a speed of 0.8 fps and an angle of 90 degrees from the dock face.

c. Impact loads shall be applied midway between dock restraint connections.

d. An abnormal berthing factor of 1.5 shall be used for design of the float system.

C. The minimum Gangway Load (GL) shall consist of:

1. Superimposed dead load of the Gangway structure tributary to the dock.

2. Transferred Uniform Live Load of 100 pound per square foot on Gangway area tributary to the dock.

3. Transferred Gangway lateral load tributary to the dock.

D. Combined loading cases for design:

1. Case 1 – Dead Load only, including superimposed Gangway Dead Load.

2. Case 2 – Dead Load + Uniform Live Load, including transferred Gangway Live Load.

3. Case 3 – Dead Load + Concentrated Live Load.

4. Consider load cases parallel and perpendicular to axis of dock:

a. Case 4a – Dead Load + Parallel Wind Load + Vertical Wave Load including transferred gangway lateral load.

b. Case 4b – Dead Load + Impact Load.

E. Design Calculations:

1. Calculations for loads imposed by the handling and lifting methods to be employed.

2. The material strength properties, load factors and capacity reduction factors shall be as defined by the applicable code or justified by rational analysis.

3. The design calculations shall include but not be limited to the following:

a. Determination of extreme fiber stresses in structural members for all load cases.

b. Stresses in the dock system connections for all load cases.

c. Transfer of dock system loads to dock restraint system.

d. Freeboard calculations for all float modules.

1.6 REQUIREMENTS FOR DOCK RESTRAINT SYSTEM

A. The dock shall be laterally restrained by internally located guide piles as shown on the drawings.

The pile guides shall be designed by the float manufacturer and shall be coordinated with the installation contractor to accommodate pile installation tolerance throughout the tidal range at the site.

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1.7 SUBMITTALS

A. Prior to ordering dock system materials, submit final design calculations signed and sealed by a Civil or Structural Engineer holding a valid Certificate of Registration in the State of Washington and experienced in floating dock design. The calculations shall demonstrate that the dock system, using the criteria specified as minimum requirements, is designed to withstand the load conditions without damage.

B. Prior to fabrication of the dock system components, submit shop drawings signed and sealed by a Civil Engineer holding a valid Certificate of Registration in the State of Washington. The shop drawings shall indicate the float module dimensions, float module construction, and connection details, location, and methods for attaching to the dock restraint system, and accessories. Submit shop drawings for all specially fabricated items, and catalog sheets for all manufactured items.

C. Submit experience data verifying the dock system supplier’s required years of experience in the manufacture of docks including the project location, date of installation, and Owner (including the name, address, phone number of a person who can be contacted for verification). An example of a previous installation of the system proposed for this project shall be included.

D. Submit the quality control procedures to be used during the manufacture and installation of the dock system.

E. Prior to completion of the dock system, submit operation and maintenance procedures manual for all system components. The manual shall include instructions, recommended frequencies of maintenance and maintenance procedures and materials by brand name and specification. All data shall be on 8 1/2 by 11 inches (and 11 by 17 inches, folded to fit) sheets of paper bound in a book with a protective cover. The binder external cover shall be identified as “Dock System Operation and Maintenance Procedures”.

1.8 DOCK VENDOR’S QUALIFICATIONS

The dock system shall be provided by a firm having a minimum of ten (10) years’ experience in the manufacture and installation of dock systems. The system being proposed for this project shall have been successfully installed for a minimum of five(5) years at another location.

1.9 DELIVERY, HANDLING AND STORAGE

A. Use all means necessary to protect materials before, during, and after delivery to the Work site, and to protect the installed work and materials of all other trades. Use extreme care in the loading, unloading, and transporting materials to prevent damage.

B. Deliver the materials to the Work site and store, all in a safe area, out of the way of traffic, and shored up off the ground surface.

C. Place identification numbers on all dock modules (such that they are not covered up after assembly) that conforms to the shop drawing numbering system. Also identify connection hardware and store separately. Protect all metal products with adequate weatherproof outer wrappings.

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D. In the event of damage caused by the Contractor, immediately make repairs and/or replacements necessary to the satisfaction of the Owner at no additional contract cost.

1.10 WARRANTY

A. The individual dock modules shall carry a warranty against defects in materials and workmanship for a period of fifteen (15) years from the date of project acceptance. All other system components including accessory items shall carry a manufacturer’s warranty against defects in materials and workmanship for a minimum of one (1) year from the date of project acceptance. If within the respective warranty periods any materials or their installation are found to be defective, the Contractor shall repair or replace the defective item to the satisfaction of the Owner and at no cost to the Owner. This warranty excludes coverage for damage caused by abuse, misuse or neglect, and improper maintenance.

PART 2 – PRODUCTS

2.1 DOCK MODULES

A. Dock frame shall be fabricated using structural steel conforming to ASTM A36, ASTM A500, and ASTM A572. Welding shall conform to AWS D1.1. Structural bolts shall be ASTM F 3125.

Steel frame and all other parts shall be hot dip galvanized to ASTM A123 G90 minimum coating thickness. Repair damaged hot dip galvanized coatings in accordance with ASTM A780.

B. Dock pontoon foam core shall be closed cell expanded polystyrene that completely fills the polyethylene shell. The polystyrene foam shall have a unit weight between 0.95 pcf and 1.25 pcf with properties conforming to ASTM C578. The foam core shall not have more that 10% reground material. The polyethylene shell shall be roto-molded with a minimum nominal wall thickness of 0.350 in. Pontoons shall be bolted to the frame with manufacturer’s standard diameter machine bolts using all bolt locations provided by the pontoon manufacturer.

C. FRP deck panels shall have an integral grit non-slip surface. The panels shall have at least 60 percent functional open space or 40 percent or greater multi-directional open space.

D. The float shall have unobstructed grating on at least 50 percent of the surface area.

E. Rub boards shall be recycled, UV stabilized high density polyethylene (HDPE), structural grade.

Fasten with stainless steel fasteners.

F. Miscellaneous fasteners shall be stainless steel type 316, or ASTM F 3125 grade A325 hot dip galvanized; compatible washers shall be used with all nuts and bolts; secure all fasteners with helical spring type washers.

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2.2 CLEATS

A. Cleats shall be ductile iron, hot dipped galvanized open base cleats, 24 inch. Cleat locations shall be as indicated on the Drawings; attach cleats in accordance with the manufacturers’ recommendation.

PART 3 EXECUTION

3.1 INSTALLATION

A. Installation shall be in accordance with approved shop drawings with connections re-tightened as required after complete installation in the water and before final inspection.

B. All welding shall be performed by certified welders and shall conform to the current specifications of the American Welding Society.

C. Fasteners shall not protrude beyond the rubboard into the berthing area. Fasteners protruding above the surface of the deck shall have a low, rounded profile.

D. Bolts shall be of the size required, with adequate thread length.

E. Plastic lumber shall be straight, cut square on the ends and fabricated accurately to provide uniform gaps and butt joint connections. Lumber gaps shall not exceed 1/2 inch between adjoining ends but shall be sufficient to allow for thermal expansion without buckling. Round exposed corners and edges.

F. All decking or any other members that are subject to foot traffic, shall be flush with the walking surface.

3.2 ACCESSORIES

A. All pier accessories shall be installed in accordance with the manufacturer’s recommended method of installation.

B. Schedule installation of pier accessories to avoid damage from other work.

END OF SECTION 1/2017

4. Vertical height difference between adjoining modules: Maximum ¼.

END OF SECTION 1/2017