ALTIMETRIC TRANSITION CURVES OF PARABOLIC PROGRESSION

RACCORDI ALTIMETRICI STRADALI AD ANDAMENTO PARABOLICO

This article discusses the problem of linking new road projects to existing highways, with particular reference to the design of vertical curves when there is an altimetric difference between the levels of the new and existing roads. Tables and graphs are presented for use in the design of parabolic vertical transition curves. Some parabola equations are developed, and two working examples are given of the use of the tables and graphs. /TRRL/

• Corporate Authors:

  Societa Autostrade

  Via Antonio Nibby 10
  00161 Rome,   Italy 
• Authors:
  • Trombetta, C
• Publication Date: 1975-1

Language

• Italian

Media Info

• Features: Figures; Tables;
• Pagination: p. 21-21
• Serial:
  • AUTOSTRADE
  • Volume: 17
  • Issue Number: 1

Subject/Index Terms

• TRT Terms: Charts; Data tables; Geometric curves; Graphics; Highway curves; Highway grades; Highways; Mathematical models; Parabolas; Slopes; Transition curves
• Uncontrolled Terms: Graphical analysis; Vertical; Vertical curvature
• ITRD Terms: 6486: Chart; 2806: Gradient; 2755: Highway; 6473: Mathematical model; 2892: Transition curve; 9087: Vertical
• Subject Areas: Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00127784
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Dec 3 1975 12:00AM