Abstract: A float which may be utilized individually or which may be joined to other such floats or used with other elements to provide flotation for a deck or dock unit. Though the particular shapes and attributes of the float may vary for the particular use, the basic float consists of a hollow, preferably rotocast, unit which combines an exterior skin with attachment accommodations having a selectable top surface and a first and second flotation concept. The first flotation is provided by the buoyancy of the hollow structure with the second achieved through a plurality of selectively shaped and positioned cavities extending upwardly from the bottom surface of the float to a location at or adjacent the upper surface of the float. With this dual flotation provision, should the exterior skin of the float be pierced, allowing water to fill the interior thereof, flotation is provided by air entrapment within the formed cavities.

Abstract: A supporting surface provided by utilizing a plurality of individual sections which when joined will provide a planar supporting surface and which sections include formed outer skins having a plurality of supporting post sections formed integrally with the skins and extending from the upper skin surface to the lower skin surface thus providing a void between the skins which may be filled with material to provide additional strengthening for the sections. The formed sections include a stepped interlocking feature for joining the sections and the sections are designed to permit a selection of joining arrangements to provide a supporting surface of various configurations. The surfaces may include non-slip characteristics formed integrally with the sections during the molding process.