IAI designed and installed a geotextile tube breakwater along the Atlantic shoreline adjacent to a landing strip and rocket launch pad at the Wallops Flight Facility, part of the Goddard Space Center, in Virginia. The geotextile tube breakwater was constructed from 4,600 lineal feet of 34 foot circumference geotextile tubes. A scour apron was also installed along the entire length of the geotextile tubes to prevent erosion of the sand below the tubes.
Due to the difficult layout of the site, personnel had to assemble, disassemble and reassemble the header system in order to maximize effectiveness of pumping from two slurry pits, where sand was mixed with water prior to pumping it to the geotextile tubes. Approximately 6,000 cubic yards of sand from the slurry pits were used to fill the geotextile tubes.
The custom manifold design of the header system provided personnel the option of filling multiple or individual fill ports simultaneously. Pumping distances reached nearly one-half mile.
Scope of Work
IAI was responsible for:
- Design and installation of 4,600 lineal feet of 34 foot circumference geotextile tube breakwater and 4,600 lineal feet of scour apron
- Design, construction and operation of sand slurrying and conveyance system for filling the geotextile tubes
- 4,600 lineal feet of 34 foot circumference geotextile tubes
- 4,600 lineal feet of scour apron
- 8 inch and 6 inch diameter abrasion resistant submersible pumps and hydraulic power packs
- 1,500 feet of 8 inch diameter HDPE pipe
- 250 feet of 6 inch diameter hose
- All-terrain vehicle