PRE-ASSEMBLED MATS PLACED BETWEEN TIDES

Anchorage, Alaska, has a new boat ramp, constructed as part of a harbor wasteland reclamation project at Ship Creek Point. Hexacon 910-H blocks were used as an alternate to specified material, reducing the cost of the ramp lining by two-thirds. The 9-in.-thick hexagonal blocks were cast near the site, strung together with wire rope into flexible mats 8 ft wide and 44 ft long, and hauled to the site on flatbed trailers. Portions had to be installed quickly at low tide. A 4-ft-deep trench was excavated to anchor the block mats against the moving force of large ice flows. The mats were placed atop a filter fabric. The blocks on the uppermost 50 ft of ramp were placed by hand and strung together in place. Installing the 50,000 Hexacon blocks took about seven weeks.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03620506
• Corporate Authors:

  Cahners Publishing Company

  275 Washington Street
  Newton, MA  United States  02158-1630
• Publication Date: 1989-10

Media Info

• Features: Photos;
• Pagination: p. 81
• Serial:
  • Highways and Heavy Construction
  • Volume: 132
  • Issue Number: 11
  • Publisher: Cahners Publishing Company
  • ISSN: 0362-0506

Subject/Index Terms

• TRT Terms: Building; Cost effectiveness; Facilities; Harbors; Installation; Mat footings
• Uncontrolled Terms: Mats
• Geographic Terms: Alaska
• Old TRIS Terms: Boat ramps; Hexacon blocks
• Subject Areas: Construction; Geotechnology; Highways; Maintenance and Preservation; Marine Transportation; Materials; Terminals and Facilities;

Filing Info

• Accession Number: 00488786
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 31 1989 12:00AM