NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA
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Efforts concerned the evaluation and development of umbrella pile-anchors. Two umbrella pile anchor designs were developed for use in moorings and dolphins. One design weighs about 1400 pounds and requires a casing for placement the other weighs about 2200 pounds and is driven directly into the ground in a locked position, then opened. Tests indicated that both designs are operational in homogeneous soils free of boulders and other large obstructions. Both have bearing capacities and resistance-to-uplift capacities in excess of 300 kips in sand bottoms. Each design offers advantages for use in specific situations depending on such factors as fabrication costs, soil characteristics and depth of water at the driving site, and equipment available for placement.
- Structural Engineering and Building Technology