Castle Oil Storage Tanks
Three additional oil storage tanks ranging in diameter from 40 to 75 ft and 65 ft tall were constructed at the Castle Port Morris Terminal on the East River.
Subsurface soils consisted of miscellaneous fill and alluvial silt and sand on top of bedrock for half of the site and up to 20+ ft of fill and soil to bedrock on the remainder of the site. Numerous old foundations, utilities, and obstructions were present in the miscellaneous fill. Original plans called for pile foundations with concrete pile caps. The shallow bedrock made the pile option impractical and the large amounts of miscellaneous debris fill needed to be removed to make any solution practical. The total tank loading consisted of five kips psf dead load and a two kips psf live load. The challenge was to provide the support needed while minimizing differential settlement across the tank bottom.
A total of 490 Geopier elements ranging in depth from 8 to 20 ft were used to provide the support required while minimizing differential settlement beneath the tank. Geopier elements were installed on 3.5 to 4.5 ft centers depending on the location within the tank. The Owner located and removed debris fill in areas where drilling was obstructed. Both the Geopier technology and the use of recycled crushed concrete as aggregate resulted in substantial savings for the project.
Castle Port Morris Terminals, Inc - Bronx, NY
RPMS Consulting Engineers, Inc - Monroe Township, NJ
Envar Services, Inc Tristate Environmental - Hawthorne, NY