TECHNICAL-ECONOMIC POSSIBILITIES AND THRESHOLDS OF RURAL ROAD CONSTRUCTION IN DEVELOPING COUNTRIES WITH PARTICULAR REFERENCE TO LABOUR-INTENSIVE CONSTRUCTION METHODS AND THE OPENING UP OF RURAL AREAS IN EAST-AFRICA - ETHIOPIA

TECHNISCH-WIRTSCHAFTLICHE MOEGLICHKEITEN UND GRENZEN DES LAENDLICHEN STRASSENBAUS IN ENTWICKLUNGSLAENDERN

EARTH AND CRUSHED STONE ROADS ARE CERTAIN, ON COST GROUNDS, TO BE THE NORMAL TRAFFIC ROUTES FOR DEVELOPING COUNTRIES, PARTICULARLY SINCE THEIR RURAL AREAS ARE OFTEN NOT OPENED UP AT ALL FOR TRANSPORT. A GENERAL CLASSIFICATION OF RURAL ROUTES AND ROADS WILL BE UNDERTAKEN ACCORDING TO COST CLASSES. THE TECHNICAL POSSIBILITIES FOR THE REDUCTION OF CONSTRUCTION COSTS FOR THE VARIOUS HIGHWAY CLASSES ARE DETAILED, AS WELL AS THE POSSIBILITIES FOR THE INTRODUCTION OF LABOUR INTENSIVE CONSTRUCTION TECHNIQUES. PARTICULARLY HIGHLIGHTED ARE THE PROBLEMS OF AXLE-LOADING AND THE REDUCED BEARING CAPACITY OF RURAL ROADS: NORMAL BEARING VALUES HAVE BEEN DETERMINED FOR EARTH ROADS, GRAVEL TRACKS AND CRUSHED-STONE ROADS AND THESE ARE SHOWN TOGETHER WITH DESIGN CHARTS TAKING ACCOUNT OF ATTRITION AND TRACKING DEPENDENT WHERE APPLICABLE UPON THE SUBSOIL. FINALLY A MODEL HAS BEEN MADE OF THE VARIOUS COST CLASSES WITH THE HELP OF A COST/BENEFIT ANALYSIS OF THE ECONOMIC OPERATING GROUPS, WHICH CONSIDERS THE CURRENT CONSTRUCTION STANDARDS LINKED TO TRAFFIC VOLUMES. PARTICULAR WEIGHT IS PLACED UPON THE DETERMINATION OF THE ECONOMIC THRESHOLD FOR ADDING BITUMEN TO CRUSHED-ROCK ROADS, WHICH IN RESPECT OF THE ACTUAL TRAFFIC COMPOSITION LIES FUNDAMENTALLY LOWER IN MOUNTAINOUS AREAS THAN IN THE PLAINS.

  • Corporate Authors:

    TECHNISCHE UNIVERSITAET WIEN

    KARLSPLATZ 13
    WIEN,   Austria  A-1040
  • Authors:
    • METSCHIES, G
  • Publication Date: 1976-8-25

Language

  • German

Media Info

  • Pagination: 214P

Subject/Index Terms

Filing Info

  • Accession Number: 01302021
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD
  • Created Date: Nov 21 2010 8:29AM