CROWN ON SOIL-AGGREGATE ROADS

This paper summarizes a study of the relationship between road surface slopes and the severity of potholing on soil-aggregate roads. Although practice in crowning soil-aggregate roads often disregards the influence of longitudinal grade, the study suggests that the effect of grade on the potholing tendency is considerably more than a token effect; a resultant of transverse slope and longitudinal grade appears to be more strongly related to presence and severity of potholing than is crown slope alone. Because a tendency to tilt road crown downhill in sidehill locations can result in flatter crown (and often more severe potholing) on the uphill side of the road, caution in "by eye" shaping of soil-aggregate roads in such locations is suggested. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: p. 48-58
  • Monograph Title: Road Crown, Testing, Compaction, Soil Bitumen; The Alaska Earthquake
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00263292
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Dec 19 1974 12:00AM