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Aug 30, 2024
Hitting the Mark: Crossing the Guadalupe River with the Second Vertical-Curved Microtunnel in the United States
Authors: Robert Weinert, P.E., M.ASCE [email protected], Jesse Guerra, P.E. [email protected], and Ashley Heckman, P.E. [email protected]Author Affiliations
Publication: Pipelines 2024
ABSTRACT
The New Braunfels Utilities Surface Water Treatment Plant Discharge Water Line is a 30-in./24-in. diameter potable water distribution line that required a 413 LF trenchless installation beneath the Guadalupe River. This installation had tight alignment tolerances, was beneath a river with highly incised embankment conditions and a 20-ft surface elevation difference between shaft locations, was next to an active pump station, and had inconsistent subsurface ground conditions. Three installation methods were considered: Horizontal Auger Boring, Horizontal Directional Drilling, and Vertical-curved Microtunneling. The project team selected the vertical-curved microtunnel method which reduced risk and allowed for an optimized alignment compared to other methods. Ultimately, it was utilized in a successful installation that satisfied all parties.
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Published online: Aug 30, 2024
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ASCE Technical Topics:
- Alignment
- Design (by type)
- Drinking water treatment
- Engineering fundamentals
- Environmental engineering
- Geometrics
- Geotechnical engineering
- Highway and road design
- Highway engineering
- Highway transportation
- Hydrologic engineering
- Infrastructure
- Pipeline management
- Pipeline systems
- River crossing
- Transportation engineering
- Trenchless technology
- Tunneling
- Tunnels
- Water and water resources
- Water discharge
- Water treatment
- Water treatment plants
Authors
Affiliations
1Plummer Associates, Inc., Oklahoma City, OK. Email: [email protected]
2Plummer Associates, Inc., San Antonio, TX. Email: [email protected]
3Aldea Services, Inc., Littleton, CO. Email: [email protected]
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.