Accession Number : ADA018952

Title :   Lift System for Elevated Causeways.

Descriptive Note : Technical rept. Jul 73-Jun 74,


Personal Author(s) : Skaalen,C. I.

Report Date : NOV 1975

Pagination or Media Count : 40

Abstract : A new type of lift system using hydraulic chain jacks was developed for elevating causeways. Tests were conducted to evaluate the lift hardware and to determine the feasibility and practicability of elevating a causeway section in the surf zone on an open beach with this system. Ammi unit-hull pontoons measuring 28 x 90 x 5 feet were used as test-bed pontoons. Two independent tests were performed. In the Phase I tests the developed elevating components were evaluated and techniques and procedures for system operation were determined. In the Phase 2 tests the effects of dynamic loads on the shock-absorbing hardware of the lift system were evaluated and elevating procedures for elevating several causeway sections were established. Logistics and time requirements for a complete, elevated, shorefast pier were derived from these tests.

Descriptors :   *Causeways, *Hydraulic jacks, Amphibious operations, Beaches, Beach heads, Surf, Pontoons

Subject Categories : Marine Engineering
      Logistics, Military Facilities and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE