Conceptual Designs for Berthing Pier Galleries and Deck Lighting.

摘要

Preliminary designs are presented for utility galleries to be located below the top deck of new Navy surface combatant piers. The recommended concepts for both pile supported and floating piers are similar. Both concepts have openings for ship-to-shore utility line egress which are essentially continuous along the entire length of the structure. This continuous access is a distinct advantages since it allows utility stations to be developed for new ship classes in the future without regard to pier opening constraints. The recommended concepts utilize air-powered, fixed reels on the lower deck to both store and/or pay-out the electrical cables. This unique feature requires positioning of ship alongside the pier to match the electrical station, which can be easily accomplished by properly locating the mooring fittings along the pier. An evaluation of numerous types of pier deck lighting systems was made, and it was concluded that light standards of moderate height supporting multiple-fixture arrays could be located on a pier with minimal interference with other activities. The recommended system achieves a minimum lighting level of 0.5 footcandles and can concentrate as much as 5.0 footcandles on high-tempo areas. (Author)