TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

SAFETY TREATMENT OF ROADSIDE DRAINAGE STRUCTURES

Accession Number:

00370284

Record Type:

Component

Availability:

Find a library where document is available


Order URL: http://worldcat.org/isbn/0309033721

Abstract:

The purpose of the research was to develop traffic-safe end treatments for cross-drainage and parallel-drainage structures that would not appreciably restrict water flow. Preliminary designs were first evaluated by computer simulation, by use of a test pit in which the clear open space and grate spacing could be varied, and by use of an earth berm similar in geometry to a driveway. Promising designs were then subjected to full-scale prototype testing by using both subcompact and full-sized automobiles. Finally, guidelines for implementation of designs were developed by using a cost/benefit analysis. Traffic-safe culvert end treatments can be achieved as follows. For cross-drainage structures, (a) all culvert ends not shielded by a traffic barrier should be made to match the existing side slope with no protrusion in excess of 4 in. (10.2 cm) above grade, (b) culverts with clear openings 30 in. (76.2 cm) or less need no safety treatment other than that mentioned in a, and (c) culverts with clear openings greater than 30 in. can be made traffic-safe by grate members placed on 30-in. centers oriented parallel to the flow and in the plane of the side slope. For parallel-drainage structures, (a) the roadway side slope (or ditch slope) should be 6:1 or flatter in the vicinity of the driveway, (b) the driveway slope should be 6:1 or flatter, (c) the transition between the side slope and the driveway slope should be rounded, and (d) safety treatment of the culvert opening should include an end section cut to match the driveway slope and have cross members (grates) spaced every 24 in. (61.0 cm) perpendicular to the direction of water flow. (Authors)

Supplemental Notes:

Publication of this paper sponsored by Committee on Safety Appurtenances. 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.

Monograph Accession #:

00380038

Report/Paper Numbers:

HS-035 204

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Ross Jr, Hayes E
Sicking, Dean
Hirsch, T J
Cooner, Harold D
Nixon, John F
Fox, Samuel V
Damon, C P

Pagination:

pp 1-12

Publication Date:

1982

Serial:

Transportation Research Record

Issue Number: 868
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

61st Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1982-1-18 to 1982-1-22

ISBN:

0309033721

Media Type:

Print

Features:

Figures (18) ; Photos (41) ; References (10) ; Tables (5)

Uncontrolled Terms:

Side slopes; Treatment

Subject Areas:

Bridges and other structures; Design; Highways; Safety and Human Factors; I82: Accidents and Transport Infrastructure

Files:

HSL, TRIS, TRB

Created Date:

Feb 28 1983 12:00AM

More Articles from this Serial Issue: