Accession Number : AD0831178

Title :   COOPERATIVE MARINE PILING INVESTIGATION. PHASE IIIA. INSPECTION AFTER FIVE YEARS EXPOSURE.

Descriptive Note : Technical note,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA

Personal Author(s) : Hochman, Harry

Report Date : APR 1968

Pagination or Media Count : 11

Abstract : The Cooperative Marine Piling Committee and the Naval Facilities Engineering Command exposed 54 specially treated piles at Coco Solo Annex, Rodman Naval Station, Canal Zone, and 66 piles at Pearl Harbor, Hawaii in 1963. In November 1966, after three and one-half years of exposure, the piles at Pearl Harbor were still undamaged by marine borers. In March 1967, after four years of exposure, eight of the 54 piles at Coco Solo have been attacked by Limnoria and one was also attacked by Martesia. By March 1968 the piles at Pearl Harbor were still unattacked but the number of piles at Coco Solo that had been attacked had increased to 18. Sixteen of the piles were damaged by Limnoria only, one by Martesia only, and one by animals of both genera. Although most of the damaged piles can be classed as controls, five of the double-treated piles had initial Limnoria attack. (Author)

Descriptors :   (*PIERS, MARINE BORERS), (*MARINE BORERS, PROTECTIVE TREATMENTS), MARINE ENGINEERING, TIME, WOOD, IMPREGNATION, CREOSOTE, COAL TAR, PROTECTIVE COVERINGS, NICKEL ALLOYS, DAMAGE ASSESSMENT, PANAMA, HAWAII.

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE