New Jersey Tire Reef Stability Study
Abstract:New Jersey Marine Fisheries Administration personnel tested replicas of 10 tire unit types on two artificial reefs off New Jersey between September 1986 and July 1987. The objectives of the study were to determine the feasibility of using scrapped tires in conjunction with a fishery enhancement program and to determine the design criteria necessary for units to remain stable in New Jersey's coastal environment. The study was needed before the Administration could proceed with a wide-scale tire reutilization program. Replicas of 10 unit types were placed on study sites on Garden State North and Garden State South artificial reefs. Investigators tracked the test units for 10 months and monitored U.S. Weather Service reports for daily predicted wave heights at the test areas. Test units were numerically scored based on the distances moved. These scores were compared to various unit parameters to determine common design characteristics of stable units. As a result of this study, five unit types have been recommended for future New Jersey reef construction in 18–24 m depths, and minimum design criteria have been established for new unit designs. Tire units to be used in depths of 18 m or more must have minimum submerged densities of 275 kg/m3; minimum ballast-to-rubber ratios of 10 kg of concrete/kg of rubber; and minimum ballast-to-tire ratios of 11 kg of concrete per tire.
Document Type: Research Article
Publication date: 1989-03-01
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