Jun 30 2008
Mil Tech — New Barriers Could Replace Sandbags
Sandbags are common in field encampments and in hostile territory and have the advantage of being portable. But sandbags have gaps and are labor-intensive to fill. So the U.S. Army, Navy, Air Force, Marine Corps, and Coast Guard are using a new type of barrier — a collapsible form that can be quickly filled with sand or dirt. The barriers also can be emptied, collapsed, and reused.
The prefabricated Concertainer Defense Wall, made by <a href=”http://www.hesco.com/”>HESCO Bastion Ltd</a>. of Leeds, England, is a series of steel-wire Weldmesh panels joined by steel wire coils. The wire coils allow the units to be packed flat for storage and shipping. Concertainer also can be interleaved, and by inserting a pin, the units can be connected horizontally to form a wall.
For military purposes, Concertainer comes in 10 sizes, varying in cross-section from 2 feet by 2 feet to 7 feet 3 inches by 7 feet. Units come in various lengths.
Al Grice, technical representative for HESCO Military Products, says the greatest advantage of Concertainer is speed.
“As a guide, a Mil 1 unit, which is 4 feet 6 inches high and 3 feet 6 inches thick by 32 feet long, can be erected and filled by a crew of four with a loader in 20 minutes, while an equivalent volume of sandbags would require a squad about 8 hours,” Grice points out.
Other advantages, Grice notes, are that the materials used in Concertainer are more durable than sandbags, cost per given volume is less, and the footprint of structures built with Concertainer units is smaller because walls don’t need to be sloped, as in the case of sandbags, to create a stable wall.
The maximum $800 million contract for Concertainer units is managed through Defense Supply Center Philadelphia.
<span style=”FONT-WEIGHT: bold”>About the author:</span> <span style=”FONT-STYLE: italic”>Alan M. Petrillo is a Tucson, Ariz. freelance writer who works in a wide variety of fields, writing for national and regional magazines and newspapers. He’s also the author of the historical mystery,</span> Full Moon <span style=”FONT-STYLE: italic”>(JoNa Books, 2005).</span>
