A. Documentation. That certain document entitled "Layout and Design Guidelines for Small Craft Berthing Facilities," declared a public document by City Council Resolution No. 91-705 is hereby referred to and adopted by reference as if fully set out herein except that the specific provision of this section shall govern.
B. Definitions. The following terms are defined for the purposes of this resolution, unless otherwise from context:
DECKING and DECK SURFACE. Describes the type of material to be used for the deck and general conditions of repair that shall be maintained.
FLOTATION. Material describes acceptable types of material to be used to provide buoyancy for the dock.
FREEBOARD. The distance from the top of the deck to the water line.
OR EQUIVALENT. when used in the foregoing standards is intended to allow for latitude in construction and maintenance; however, the equivalency of any variation from these standards shall be fully demonstrated to the council prior to actual construction.
SIZE. Refers to minimum dimensions for fingers and gangways.
SLIP. A berth or docking area designed to accommodate one boat.
STABILITY. The ability of a dock to remain stationary during use. STABILITY has been divided into three types: roll stability (motion about the centerline of a dock and finger), pitch stability (motion in the vertical plane), and yaw stability (motion in the horizontal plane).
C. Stability—general. All docks shall be constructed to provide a firm, stable footing for persons stepping onto the dock either from shore or from a boat moored to the dock.
D. Roll stability. Fingers of u-shaped slips shall allow minimum roll or rocking motion during use. All portions of all docks shall be so constructed that a concentrated weight of 400 pounds placed anywhere on the deck surface shall not over-stress dock members nor shall it cause the dock surface to tilt more than 6 degrees from the horizontal.
E. Pitch stability. All portions of docks shall be constructed to minimize pitching due to activity on the dock.
F. Yaw stability. All portions of docks shall be constructed to minimize yaw due to activity on the dock, without appreciable lateral movement or over-stressing the dock structure.
G. Overall lateral wind stability. The design of all docks and anchoring systems shall be sufficient to withstand all lateral loads reasonably expected to occur at the specific location. Minimum wind load calculated per the current International Building Code.
H. Size. All rectangular docks shall be a minimum of 6 feet wide at any point. All walkway segments shall have a minimum unobstructed width of 4 feet. Finger floats up to 25 feet long shall have a minimum width of 30 inches. All gangways shall be at least 3 feet wide with a maximum slope of 3:1 (horizontal: vertical) at elevation 445 feet. Handrails between 34 and 38 inches high shall be provided for gangways. Handrails shall be designed to resist a force of 50 pounds per lineal foot applied at right angles to the top rail. Bridgewater Channel or high density entrances to docks shall be secured by self-closing gates and fences a minimum of 5 feet in height extending no less than 3 feet horizontally beyond the point of entrance. Intermediate rails and openings in fences and gates shall not allow a 4-inch sphere to pass through.
I. Flotation material. To provide long-term flotation capability and to minimize potential pollution of Lake Havasu due to decomposition of materials, the following types of encapsulated flotation materials, or equivalents, shall be used on all docks:
1. Tanks. Welded steel, fiberglass or polyethylene tanks filled with a closed cell, expansion-type foam which completely fills the tank. Steel tanks shall be coated with a corrosion-inhibiting coating which shall be resistant to gasoline and hydrocarbons (a urethane coating or equivalent); or
2. Foam billets. Foam billets shall have the vertical surfaces and bottoms protected with a minimum of 125 mil plastic coating or three-fourths-inch reinforced lightweight concrete. Such coatings shall extend a minimum of 2 inches on to the upper horizontal surface. A gasoline and hydrocarbon-resistant coating must be used within 50 feet of gas pumps, dispensers, or nozzles. All existing foam billets that are replaced shall meet the standards set forth in this section.
J. Decking and deck surface. All decking or deck surface (including carpeting or other materials) shall not contain loose material, holes, or tears which could present a hazard. Wood shall be painted or otherwise sealed on all sides. CCX plywood may be used as a deck surface provided that all surfaces have been coated with an exterior grade paint and carpeting or an equivalent deck surfacing is then applied. All decking shall provide a non-skid surface free from hazards. The perimeter surfaces of docks and fingers shall have protective, resilient bumpers.
K. Mooring device. Number and placement to be determined during plan review. Mooring devices shall be capable of accepting a three-fourths-inch line.
L. Wind load. Wind load conditions shall be calculated per the current edition of the International Building Code. Interior boats shall receive one-fifth the exposed load.
M. Fire protection. Per the currently adopted International Fire Code.
N. Illumination and electrical installation. Walking surfaces shall be illuminated with a minimum light intensity of one footcandle. Electrical wiring shall conform to the adopted edition of the National Electrical Navigational lights shall conform to minimum standards for inland waterways, and shall be on separate circuits from other fixtures and receptacles.
O. Fasteners. Fasteners shall be of a corrosion-resistant material or be protected by galvanized coating, etc. Screws shall not be used except for deck surfaces. Except as allowed above, bolts and nuts shall be the required fasteners. Backing plates a minimum of 2-bolt diameters larger than the bolt and 1/8-inch in thickness shall be utilized. Field coatings such as epoxy or equivalent shall be applied to protect the backing plates from corrosion.
P. Construction and maintenance. All construction and maintenance of dock systems shall conform to this chapter.
Q. Permit process.
1. Plans. Three sets of plans shall be submitted to the Community Services Department for necessary review. The plans shall be drawn to scale and of sufficient detail so that all provisions of this chapter have been addressed. Plans shall include cross section of the dock elements for clarity. Compliance with all design requirements set forth in this section shall be verified and "sealed" by a civil engineer or equivalent. Verification of Army Corps of Engineers permit must be submitted with plans.
2. Permits. Permit valuation for docks shall be assessed at $12 per square foot. Permit fees shall be established pursuant to the provisions of Chapter 3.20.
(Ord. 15-1131, passed 5-26-2015; Ord. 13-1099, passed 9-24-2013; Ord. 07-892, passed 10-9-2007; Ord. 94-449 § 3, 1994; Ord. 91-351 § 1, 1991)
Editor’s note:
This section was formerly § 12.08.200 but was renumbered by Ord. No. 15-1131.