Video Evaluation of Highway Drainage Systems, HR-317, 1991

(1991) Video Evaluation of Highway Drainage Systems, HR-317, 1991. Transportation, Department of

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Abstract

Since 1978 the concept of longitudinal edge drains along Iowa primary and Interstate highways has been accepted as a cost-effective way of prolonging pavement life. Edge-drain installations have increased over the years, reaching a total of nearly 3,000 mi by 1989. With so many miles of edge drain installed, the development of a system for inspection and evaluation of the drains became essential. Equipment was purchased to evaluate 4-in.-diameter and geocomposite edge drains. Initial evaluations at various sites supported the need for a postconstruction inspection program to ensure that edge-drain installations were in accord with plans and specifications. Information disclosed by video inspections in edge drains and in culverts was compiled on videotape to be used as an informative tool for personnel in the design, construction, and maintenance departments. Video evaluations have influenced changes in maintenance, design, and construction inspection for highway drainage systems in Iowa.

Item Type: Departmental Report
Keywords: Compliance, Edge drains, Inspection, Videotapes, Geocomposites
Subjects: Transportation
Transportation > Roads and highways
Transportation > Research
Transportation > Environment
Transportation > Environment > Water
ID Code: 16830
Deposited By: Iowa DOT Library
Deposited On: 07 May 2014 11:50
Last Modified: 07 Jan 2015 19:30
URI: http://publications.iowa.gov/id/eprint/16830