A Vented Low-Water Causeway: Vent Sizing, Depth Over the Slab, a Closure Rule and What It Gives Up Against a Bridge

Four 900 mm vents carry 5.43 m3/s after inlet limitation; depth over an 18 m slab reaches 0.30 m at 10.46 m3/s, the closure rule, exceeded an expected 6.3 days per year (98.3 percent passable). Cost 36,060 dollars versus a stated 285,000 dollar bridge, with the losses against a bridge stated in numbers. SIMULATED, NOT MEASURED.

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-10
DOI
https://doi.org/10.5281/zenodo.24113708
Primary Topic
Hydraulic flow and structures
Type
preprint
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preprint

A Vented Low-Water Causeway: Vent Sizing, Depth Over the Slab, a Closure Rule and What It Gives Up Against a Bridge

William Alexander Aldred
Zenodo (CERN European Organization for Nuclear Research)
Hydraulic flow and structures
preprint

A Vented Low-Water Causeway: Vent Sizing, Depth Over the Slab, a Closure Rule and What It Gives Up Against a Bridge

William Alexander Aldred
preprint en

Abstract

Four 900 mm vents carry 5.43 m3/s after inlet limitation; depth over an 18 m slab reaches 0.30 m at 10.46 m3/s, the closure rule, exceeded an expected 6.3 days per year (98.3 percent passable). Cost 36,060 dollars versus a stated 285,000 dollar bridge, with the losses against a bridge stated in numbers. SIMULATED, NOT MEASURED.

Zenodo (CERN European Organization for Nuclear Research)
Hydraulic flow and structures
DOIOpen Access PDFOpenAlex
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A Vented Low-Water Causeway: Vent Sizing, Depth Over the Slab, a Closure Rule and What It Gives Up Against a Bridge — William Alexander Aldred · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS