WIND TUNNEL INVESTIGATION OF NONSOLID SIGN BACKGROUNDS
THE NEEDS OF MODERN HIGHWAY SYSTEMS DICTATE LARGE SIGN BACKGROUNDS TO CONVEY ESSENTIAL INFORMATION TO THE MOTORIST. LARGE SIGNS MEAN HIGH WIND LOADINGS, WHICH IN TURN LEAD TO LARGE AND RELATIVELY MASSIVE SUPPORT STRUCTURES. A FEASI- BILITY STUDY WAS MADE OF SIX TYPES OF NONSOLID BACKGROUNDS, WITH A SOLID BACKGROUND FOR CONTROL. SPECIMENS, 2 BY 1 1/2FT WERE TESTED AT 50, 75, AND 100 MPH IN A 7-BY 10-FT SUBSONIC WIND TUNNEL AT ANGLES OF WIND INCIDENCE /ROTATION ABOUT VER- TICAL AXIS/ OF 3, 15, 30, 45, 60, 75, & 90 DEGREES. RESULTS INDICATE THAT A LOUVERED BACKGROUND OFFERS PROMISE FROM THE STANDPOINTS OF REDUCTION OF WIND LOADINGS AND OF SATISFAC- TORY VISIBILITY CHARACTERISTICS. /AUTHOR/
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Supplemental Notes:
- 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:
- Tidwell, Danny R
- Samson Jr, Charles H
- Publication Date: 1965
Media Info
- Media Type: Digital/other
- Features: Figures; Tables;
- Pagination: pp 1-9
- Monograph Title: Bridges and structures
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Serial:
- Highway Research Record
- Issue Number: 103
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aerodynamic force; Feasibility analysis; Reduction (Chemistry); Sign supports; Signs; Specimens; Traffic signs; Visibility; Wind; Wind tunnels
- Uncontrolled Terms: Louvers; Wind load
- Old TRIS Terms: Reduction; Sign structures; Subsonic
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00224770
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Apr 14 1994 12:00AM