EFFECTS OF TREES ON WIND VELOCITIES
INFORMATION IS ASSEMBLED REGARDING WIND VELOCITIES AS AFFECTED BY BARRIERS, NATURAL AND ARTIFICIAL IN ORDER TO RELATE SUCH DATA TO THE CONTROL OF DRIFTING SNOW ON PUBLIC HIGHWAYS. WIND VELOCITIES WERE DETERMINED WITH AN AUTOMATIC RECORDING ANEMOMETER AND WITH A SMALL HAND ANEMOMETER WHICH WERE CALIBRATED TO SECURE RELATIVELY ACCURATE RESULTS. FIVE BARRIERS OF THE PLANTED VARIETY HAVE BEEN STUDIED: (1) WHITE PINE, (2) WILLOW, (3) NORWAY SRUCE, (4) HARD MAPLE, (5) EVERGREEN SNOW FENCE. MAXIMUM REDUCTIONS IN VELOCITY FOR THE VARIOUS BARRIERS RANGED FROM 52 PERCENT TO 97 PERCENT OF THE UNOBSTRUCTED WIND VELOCITY. WITH A ROW OF HARD MAPLES ON EACH OF THE ROAD, THERE ARE CERTAIN CONDITIONS WHEN AN INCREASE IN VELOCITY IS FOUND AT THE CENTER OF THE ROAD. /AUTHOR/
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Supplemental Notes:
- Vol 15, pp 112-121, 13 FIG; part of Report of Joint Committee of Highway Research Board and American Association of State Highway Officials on Roadside Development. 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.
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Authors:
- Aust, F A
- Publication Date: 1936
Media Info
- Media Type: Digital/other
- Monograph Title: Proceedings of the Fifteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 4-6, 1935
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Serial:
- Highway Research Board Proceedings
- Volume: 15
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Anemometers; Anemometry; Barriers (Roads); Snowdrifts; Trees; Velocity; Wind
- Uncontrolled Terms: Barriers
- Old TRIS Terms: Wind measurement; Wind velocity
- Subject Areas: Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 00218650
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jun 11 1971 12:00AM