Diego Garcia Radomes
Location: The Island of Diego Garcia, Indian Ocean
Overview: Located just south of the equator in the central British Indian Ocean Territory, Diego Garcia is the most remote Naval base in the world. The U.S. Navy requested CTL’s unique expertise to provide geotechnical testing and consulting as it expanded its communications facilities across the island with nine new antennas and radomes―structural, weatherproof enclosures that protect the radar antennas.
The project had no shortage of obstacles. Diego Garcia is located 1000 miles from the nearest continent, so the drill equipment, including a track-mounted drill rig, had to be sea lifted from Sacramento, California to Singapore and then sea lifted to Diego Garcia. The subsurface conditions on the island’s interior is primarily sand and gravel made from eroded coral, while the seaward side of the atoll consists of fossilized coral, an extremely hard material.
CTL utilized a mud-rotatory technique to log the subsurface conditions and collect samples for testing. Portions of the site were located within the jungle which made mobilization difficult. CTL teamed with a local contractor to help lay down mud mats on the soft, saturated soils to allow access to the boring locations.
Services Provided: Geotechnical expertise and engineering solutions
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