COMPARISON BETWEEN AERIAL AND GROUND-BASED ASSESSMENTS OF ROAD EARTHWORKS FAILURES IN NEPAL

A method of carrying out earthworks condition assessments on mountain roads, funded by the Overseas Development Administration (ODA), has been developed at TRL using rapid aerial reconnaissance and a relational database system. The advantages of carrying out this technique are compared with those of a conventional ground-based approach on an 84km road in Nepal. Close correspondence has been found in those areas where the database and interpretation developed by the two surveys overlap, and it is concluded that the TRL method has the potential to provide a cost-effective Maintenance Management System over long lengths of alignment, but it cannot replace the conventional method of engineering assessment at the site scale. A combination of the two approaches offers considerable benefits. (A)

• Corporate Authors:

  Transport and Road Research Laboratory

  Overseas Unit, Old Wokingham Road
  Crowthorne RG11 6AU, Berkshire,   England 
• Authors:
  • HEATH, W
  • Hearn, G
  • MCKINNON, B
• Publication Date: 1995

Language

• English

Media Info

• Features: References;
• Pagination: 5 p.

Subject/Index Terms

• TRT Terms: Aerial photography; Databases; Earthwork; Failure; Maintenance; Photogrammetry; Slope stability
• Geographic Terms: Nepal
• ITRD Terms: 4006: Aerial photography; 8614: Database; 3653: Earthworks; 5520: Failure; 3847: Maintenance; 8077: Nepal; 4004: Photogrammetry; 5783: Slope stability
• Subject Areas: Maintenance and Preservation;

Filing Info

• Accession Number: 00720031
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, ATRI
• Created Date: Apr 26 1996 12:00AM