This study is an extension of an earlier study that investigated the drainage efficiency of rectangular runway grooves in reducing runoff depths and the potential for hydroplaning. A mathematical model based on kinematic wave theory was developed and compared to the results of experiments conducted on a concrete slab subject to artificial ly produced rainfall. Parallel grooves were cut in the slab along its 30-ft length, which sloped at a typical 1.5 percent normal to the flight path. The 30-foot dimension models only the central portion of a single runway lane perhaps 100 ft wide. It is concluded that the grooves decreased runoff depths appreciably more so as the spacing between the grooves decreased. The current investigation adds wind velocity (15 mph) and direction to the variables considered in the previous study, with all other conditions essentially the same. This final report describes: (1) a kinematic wave model with wind superimposed (Phase 1); and (2) experiments conducted to calibrate the model (Phase 2), The hydraulic resistance of the slab and the calibration constants of the models were determined from the experiment. Curves of water depths versus position on a runway were predicted from the model and plotted out to 100 ft. Data points in the first 26 ft were plotted on the same graphs as a comparison. A conservative estimate of the runoff depth increase due to a direct cross wind to the runway is 0.04 inch for all conditions. Increases that are somewhat larger are restricted to smaller runoff depths. The breakout point for runoff in grooves appears to shift upstream about 25 percent of the breakout distance without wind.

  • Corporate Authors:

    Pennsylvania State University, University Park

    Pennsylvania Transportation Institute, Transportation Research Building
    University Park, PA  United States  16802
  • Authors:
    • Reed, J R
    • Kibler, D F
    • Krallis, G A
  • Publication Date: 1989-10

Media Info

  • Pagination: 65 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00494344
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: PTI-8948, DOT/FAA/CT-TN89/59
  • Files: TRIS
  • Created Date: May 31 1990 12:00AM