MEASUREMENTS OF RUNOFF DEPTHS FROM A GROOVED LABORATORY SLAB

Runoff experiments were conducted indoors on a 30 feet by 15 feet portland cement concrete slab sloping at 1.5 percent along the 30-feet dimension. These laboratory tests were run to verify the concept of a mathematical model developed for grooved runway runoff which was presented at the 1983 Annual Meeting of the Transportation Research Board. Artificial rainfall was applied to the slab by equipment constructed earlier in a separate but cooperating study. The tests essentially consisted of tracing water movement patterns using dye, and measuring small water depths using pressure transducers for rainfall rates of 1.15 and 2.45 inches/hour. The results indicate that water depths on the upstream surface of the grooved slab are negligible because all of the rainfall is carried in the grooves until, at some point downstream, the grooves fill up and overflow. In addition, the hydraulic roughness coefficient was found to be higher than expected for the pavement surface, and lower than the value used in Phase I for the groove surface. The computer program which solves the analytical model was modified accordingly. Model results were generated and were compared with experimental values. predicted water depths and their percentage reduction due to grooving were also generated out to a distance of 100 feet for spacings of 5 inches and less under rainfall of 3 inches/hour. The maximum depth reduction due to grooving was about 28 percent at the edge of runway compared with the Phase 1 estimate of 19 percent over the entire runway. Other runway locations have larger reductions.

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/trcircular/274/274-006.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00978515
• Supplemental Notes:
  • This paper appeared in Transportation Research Circular Number 274, Developments in Aircraft and Airport Compatibility. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Corporate Authors:

  Transportation Research Board

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  Washington, DC  United States  20001
• Authors:
  • Reed, J R
  • Proctor, M L
  • Kibler, D F
  • Agrawal, Sudhir K
• Publication Date: 1984-4

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: p. 25-35
• Serial:
  • Transportation Research Circular
  • Issue Number: 274
  • Publisher: Transportation Research Board
  • ISSN: 0097-8515

Subject/Index Terms

• TRT Terms: Concrete; Depth; Hydraulics; Masonry construction; Pavement grooving; Runoff; Slabs
• Old TRIS Terms: Grooves
• Subject Areas: Aviation; Design; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00385679
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jul 30 1984 12:00AM