Trucks, by virtue of their loads, profoundly affect pavement performance. Vehicle designers and manufacturers play an important role in this respect. Tires are a major factor in the loading of the pavement: the width of the tire, the number of tires, spacing between tires, tire pressure, and design of tire treads are all important. The number and spacing of axles are also important. This report reviews relevant principles of pavement design such as the concept of load distribution. The Kentucky DOT has developed a computer model based on elastic theory to obtain a first approximation of stresses and strains within a pavement system under various loading configurations. Fatigue concepts are discussed, and the importance of fatigue failure in pavement design is noted. Kentucky DOT work in this area is described. Figures are shown which illustrate how pavement damage increases with total loads on various axle groups, the increase of damage factors with increase of payload with increase of percentage damage. Other aspects briefly covered by the report include bridge loadings, operate damage. Other aspects briefly covered by the report include bridge loadings, operating costs, safety, economic considerations, and enforcement. Efforts must be made, by statute, to encourage the use of vehicles which are less damaging to highway pavements.

Media Info

  • Features: Figures;
  • Pagination: 17 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00308117
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Res. Rpt. No. 530
  • Created Date: Aug 5 1980 12:00AM