BRISTOL INDUSTRIES OF PENNSYLVANIA, INC,
FLOATING DOCK & GANGWAY SYSTEM
MINIMUM SPECIFICATIONS AND DRAWINGS
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I. DESIGN STANDARDS
II. DESIGN LOAD CONDITIONS
III. MATERIAL AND CONSTRUCTION MINIMUM REQUIREMENTS
IV. RAMP AND GANGWAY MINIMUM REQUIREMENTS
V. INSTALLATION
VI. WARRANTY FLOTATION
VII. WARRANTY DOCK & RAMP STRUCTURE
The Floating Dock/Gangway system shall be manufactured by Bristol Industries Of Pennsylvania, Inc. You can reach us by phone at (215) 493-7230. Bristol Industries of Pennsylvania, Inc. will assist you with the pricing on the plan(s) and shall be a heavy duty type system which shall meet or exceed the following design requirements and be constructed as recommended by the Manufacturer to meet the following criteria:
The Floating Dock and Gangway systems shall be of the sizes specified to facilitate interchangeability, flexibility of design, and maintainability. All sizes and weights are nominal.
A. Vertical Loads:
DEAD LOAD shall consist of the entire weight of the floating structure.
FLOTATION shall consist of the entire weight of the floating structure.
FREEBOARD FLOTATION shall provide the maximum freeboard under dead load of the dock sections. The dock shall float level under dead load.
FLOTATION STRUCTURE shall be “drums” to meet all Army Corp. of Engineers and Coast Guard regulations. Drum sizes shall vary to meet flotation and freeboard requirements.B. Horizontal Loads:
A uniform horizontal wind, loading from any direction, shall be equal to 150 plf. with safety factor.
C. Connections:
Connections shall be designed so units may be disconnected and moved. Materials shall be aluminum, stainless steel or equal. Frame shall be fastened to the flotation with stainless steel bolts, washers and nuts of the required sizes and lengths to connect the flotation to the frame tracks.
D. Decking:
Decking is 2” x 5 ½” Dock Plank with “Rotex™” no-slip surface. Under the direct rays of the sun, Bristol Industries of Pennsylvania, Inc. decks are much cooler than wood. The decking shall be connected to the mainframe with stainless steel fasteners or equivalant. Alternate decking could be wolmanized lumber, Ipe wood, composite materials, or special decking materials as per customer request. Alternate decking shall be fastened with galvanized or stainless steel connectors as recommended by their manufacturers.
E. Frame:
Framing shall be salt resistant Series 6000 aluminum alloy, 6 1/2” high, specially designed for extra strength. The extruded side slots house 2” resilient (non marking) rubber bumper and/or hinge assembly for continuous bumper protection on open sides. The bottom of the frame shall have a custom extruded bolt track for ease of flotation attachment and adjustments as required to meet flotation requirements. The corners have heavy gauge reinforced corner keys, MIG welded for additional strength. The I-Beam Superstructure consists of a custom, heavy gauge extrusion for extra rigidity.
F. Weight:
The dock system without floats, weighs approximately 5 pounds per square foot. With flotation, approximately 8 pounds per square foot.
III. MATERIAL AND CONSTRUCTION MINIMUM REQUIREMENTS
A. Flotation
|
Size
|
Pounds Flotation
|
Size
|
Pounds Flotation
|
|
24″ x 48″ x 12”
|
450
|
48″ x 48″ x 24”
|
1,831
|
|
24″ x 48″ x 16”
|
604
|
48″ x 72″ x 12”
|
1,362
|
|
24″ x 48″ x 20”
|
759
|
48″ x 72″ x 16”
|
1,828
|
|
36″ x 48″ x 12”
|
679
|
48″ x 72″ x 20”
|
2,295
|
|
36″ x 48″ x 16”
|
911
|
48″ x 72″ x 24”
|
2,754
|
|
36″ x 48″ x 20”
|
1,143
|
48″ x 96″ x 12”
|
1,816
|
|
36″ x 48″ x 24”
|
1,372
|
48″ x 96″ x 16”
|
2,278
|
|
36″ x 72″ x 16”
|
1,373
|
48″ x 96″ x 20”
|
3,057
|
|
36″ x 72″ x 20”
|
1,716
|
48″ x 96″ x 24”
|
3,668
|
|
48″ x 48″ x 12”
|
908
|
||
|
48″ x 48″ x 16”
|
1,217
|
||
|
48″ x 48″ x 20”
|
1,526
|
Outer Shell
Properties Test Method Typical Results Melt Index ASTM D1238 6.5-6.8 Density ASTM D1505 0.935-0.936 ESCR Condition A (100% lgepal) ASTM D1693 >1000 Brittleness Temperature ASTM D746 -103 (-75) Heat Deflection Temperature 66psi ASTM D648 122-137 (50-59) Tensile Strength @ yield 2″/Min ASTM D638 2,500 Flexural Modulus (1% Secant) ASTM D790 100,000-102,000 Impact Strength 1/8″ @-40°C 1 Association of Rotomolders 45-60 Impact Strength 1/4″ @-40°C 1 Association of Rotomolders 160 1 Impact Strength of testing material is at the lower -40° C temperature as recommended by the Association of Rotomolders and not the les stringent -20 ° F as used by some Manufacturers.
Inner Core
Properties Test Method Units Density ASTM C303 Lb/Cu.Ft. Comprehensive Resistance @ Yield or 10% Deformation ASTM D165 P.S.I. Flexural Strength ASTM D203 P.S.I. Water Absorption ASTM D272 % by Vol Max *All testing including the water absorbtion testing is carried out in accordance with the American Society of Testing and Materials, (ASTM) the recognized accredited standard within the USA and in other countries around the world. Testing to other standards can be accommodated if required. Testing through an independent test house can be arrranged at additional cost.
B. Features:
These rugged, seamless, float drums are rotationally molded from virgin grade polyethylene resin with UV inhibitors. The drums are foam filled using a 1 to 1.5 density virgin expanded polystyrene (EPS). The drums are impervious to saltwater, oil, gas, marine life and the nominal .150 wall thickness assures lasting service. The heavy-duty mounting flange has molded-in mounting slots and pilot holes, making installation quick and easy. All floats have a flat top, threaded vent plugs, and “Flash Dot”, which takes the guess work out of night docking. All floats meet Army Corps of Engineers Regulation #36 and the Hunt Water Absorption test. Flotation units are considered as being part of the floating dock from the bottom of the deck framing to the bottom of the flotation units. The flotation’s integrity shall be designed to maintain buoyancy even if structurally damaged. Connections of the flotation units shall be so designed that the docks act as one unit. One unit does not deflect without adjacent units deflecting.
IV. RAMP AND GANGWAY MINIMUM REQUIREMENTS
A. Standard Sizes:
Standard ramp sizes are 3’ & 4’ wide. They can be from 9’ to 54’ long. Standard dock sizes are 6’ & 8’ wide by 20’ long. Custom sizes can be constructed upon request.
B. Materials:
The materials shall be salt resistant Series 6000 aluminum alloy and stainless steel fasteners.
C. Bulkhead Mounting Brackets:
The piano hinged mounting bracket includes a removable pin for easy installation and removal. The assembly is made from 6000 series aluminum alloy.
D. Corner Reinforcement:
2” x 2” x ¼ x 2 ½”
E. Handrail and Vertical Supports:
1 ½” Sch. 40 & 2” Sch. 40 round pipe or 2 ½” semi-circle handrail. 5” wide x 2” deep main vertical supports truss members.
F. Ramp Wheels:
Segmented Ultra High Molecular Weight (UHMW) roller system with 2 ½” x 6” roller and ¾” steel pin.
G. Live Load Design:
100 Pounds per square foot minimum up to 30 feet in length. Lengths over 30’ reduce in psf to a minimum of 50 psf at 54’ long.
H. Decking:
Decking shall be Dock Plank 2” x 5 ½” with “Rotex®” no-slip surface. It is connected to the structural main frame with stainless steel fasteners.
Installation shall be by others in accordance to the manufacturers recommendations.
The floats have a 15 year limited warranty against cracking, peeling, sloughing, and excessive deterioration from ultraviolet rays while retaining resiliency under normal usage. Defects in workmanship are warranted for a period of 1 year.
VII. WARRANTY DOCK & RAMP STRUCTURE
Decking other than aluminum Dock Plank is covered by the manufacturers warranty. All aluminum products carry a limited lifetime warranty of the aluminum that meets or exceeds Aluminum Association guidelines. The warranty would not apply to abuse or any use other than its original intention.