Design Data 6: Loads and Supporting Strengths Elliptical and Arch Pipe
The hydraulic and structural characteristics of elliptical and arch shapes offer advantages, under certain conditions, over the circular shape commonly used for sewer and culvert pipe. For minimum cover conditions, or where vertical clearance is limited by existing structures, horizontal elliptical and arch pipe are particularly suitable since the vertical heights are less than the height of hydraulically equivalent circular sizes.
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