The paper reports how filter blanket system prevents groundwater intrusion in California highways. The blanket system consists of a 3-in.-deep gravel filter layer on the bottom, a 5.4-in. cement-coated pea gravel drainage layer, a 2.4-in. apshalt layer, and 8.4 in. of concrete pavement on top. The filter layer prevents soil from washing into the pea gravel drainage layer, which will channel groundwater horizontally to drain pipes.

  • Availability:
  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 1980-8

Media Info

  • Pagination: p. 29
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00329625
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Apr 15 1981 12:00AM