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Title:

Development of Rockfall Hazard Rating Matrix for Ohio

Accession Number:

01025634

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

One hundred and eight sites along the Ohio highways were studied for their geology (stratigraphy, amount of undercutting, discontinuity characteristics, hydrologic conditions), geometry (slope length, slope height, slope angle, width and depth of catchment ditches), and traffic characteristics (average daily traffic, speed limit, decision site distance, pavement width). The data collected were statistically analyzed, using univariate, bivariate, and cluster analyses, to identify those variables that are significant in distinguishing between slopes with varying degrees of hazard potential with respect to rockfalls. Based on the results of statistical analyses and a review of the previously developed rating systems, a rating matrix was developed that assesses the geologic, geometric, and traffic-related parameters for the sites studied. In order to assess the contribution of various parameters toward rockfall hazard potential, scores were assigned to parameters on an exponential scale with higher scores representing a higher hazard potential. The developed matrix was then applied to all 108 sites and the total scores were found to range from 23 to 157. Sites with rating scores more than 100 were categorized as high rockfall hazard sites, those with scores falling between 50 and 100 as medium hazard sites, and those with scores less than 50 as low hazard sites. The rating matrix developed in this study is best suited for slopes that are subject to differential weathering. However, it can also be used for slopes that contain only durable rocks where discontinuities play a more dominant role than differential weathering.

Monograph Accession #:

01020180

Report/Paper Numbers:

06-0598

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Shakoor, Abdul
Woodard, Martin J

Pagination:

23p

Publication Date:

2006

Conference:

Transportation Research Board 85th Annual Meeting

Location: Washington DC, United States
Date: 2006-1-22 to 2006-1-26
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (5) ; References (26) ; Tables (3)

Geographic Terms:

Ohio

Subject Areas:

Bridges and other structures; Construction; Data and Information Technology; Geotechnology; Highways; Safety and Human Factors; I43: Rock Mechanics; I53: Construction of Bridges and Retaining Walls

Source Data:

Transportation Research Board Annual Meeting 2006 Paper #06-0598

Files:

BTRIS, TRIS, TRB

Created Date:

Mar 3 2006 10:24AM