Title: DEVELOPMENT OF HYDRAULIC DESIGN CHARTS FOR TYPE IV END SECTIONS FOR PIPE CULVERTS. FINAL REPORT
Abstract: The objective of this research was to develop accurate design charts for culverts with Type IV end sections. In order to achieve this objective, hydraulic studies were performed to determine the conditions that govern inlet and outlet control, relationship between headwater depth and discharge, entrance-loss coefficient for full flow, and effect on hydraulic performance by partial plugging. Hydraulic models of culverts with Type IV end sections were developed and tested in the hydraulics laboratory at the University of Kansas. The Froude scaling law was used to translate the model results to prototype scale. In general the results of the research indicated that the minor differences in the geometries of the end sections and configuration of the bar grates had no significant effect on the hydraulic performance of the end sections under inlet control. Another finding from the study was that the Type IV end sections forced short pipes on steep slopes to flow full. Experimental results indicated that smooth (concrete) and rough (corrugated steel) culverts will flow full when the headwater depth is greater than 1.3 and 1.9 times the pipe diameter, respectively. Regarding the effects of debris on the performance of the end sections, it was determined that the use of a 25% degree of blockage as a basis for design should be sufficiently conservative.
Publication Year: 1993
Publication Date: 1993-06-01
Language: en
Type: article
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Cited By Count: 1
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