Subgrade. The top surface of the Roadbed on which subbase, base, surfacing, pavement, or layers of similar materials are placed.
Appears in 3 contracts
Samples: wsdot.wa.gov, citeseerx.ist.psu.edu, www.chelanpud.org
Subgrade. The top surface of the Roadbed roadbed on which subbase, base, surfacing, pavement, or layers of similar materials are placed.
Appears in 1 contract
Samples: www.wsdot.wa.gov
