Chapter
Aug 30, 2024
An Emergency Design Approach for Immediate Rehabilitation of 4 mi of a Critical 20-in. Water Transmission Main
Authors: Nirav K. Shah, P.E. [email protected], Nicholas M. D’Angelo, R. Joeseph Burns, P.E., and Christopher P. Murphy, P.E. [email protected]Author Affiliations
Publication: Pipelines 2024
ABSTRACT
The Brock Bridge Road Water Transmission Main is a 17,600 LF (3.33 mi) 20-in. ductile iron water main constructed in the 1990s which is the sole water supply for over 30,000 residents within the Maryland City community of Anne Arundel County, MD. Recent corrosion-related failures resulted in long-duration water outages prompting the County to develop a holistic assessment and comprehensive emergency rehabilitation approach. The primary goal of the assessment was to evaluate the condition of the main to develop an immediate rehabilitation approach. Phase I comprised of installing 3,000 LF of temporary 12-in. HDPE water main to provide bypass in the event of successive failures on the 20-in. transmission main. Phase II was comprised of open-trench excavating 3,200 LF of 20-in. Ductile Iron Pipeline (DIP) with Polyvinyl Chloride (PVC) C900. Phase III was comprised of the replacement of an additional 1,100 LF of 20-in. DIP with PVC and the Cured-in-Place-Pipe lining of over 5,200 LF of 20-in. water main. This case study presents a milestone update and lessons learned of the successes and challenges throughout the emergency assessment and design of over 3 mi of critical transmission main.
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REFERENCES
American Water Works Association. (2010). AWWA C105-10 Polyethylene Encasement for Ductile-Iron Pipe Systems.
Kleiner, Y., and Rajani, B. (2002). Quantifying effectiveness of cathodic protection in water mains: theory.
American National Standards Institute and American Water Works Association. (2008). ANSI/AWWA C150 Standard for Thickness Design of Ductile-Iron Pipe.
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Published online: Aug 30, 2024
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ASCE Technical Topics:
- Cast iron
- Construction engineering
- Construction methods
- Disaster preparedness
- Disaster risk management
- Electric power
- Emergency management
- Energy engineering
- Engineering materials (by type)
- Iron (material)
- Materials engineering
- Metals (material)
- Power transmission
- Rehabilitation
- Water and water resources
- Water management
- Water supply
- Water supply systems
Authors
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1RK&K. Email: [email protected]
Nicholas M. D’Angelo
R. Joeseph Burns, P.E.
4Engineer Administrator, Dept. of Public Works, Anne Arundel County, MD. Email: [email protected]
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