Entech - Engineering | Architecture | Construction

Faced with ever increasing development growth in this southeastern Pennsylvania region, and requirements to serve a larger customer base, PA American began the planning for additional storage in the Limerick water district. Hydraulic modeling of the system was performed, a primary site was located, and Entech began the design of a new 750,000 gallon elevated storage tank that was the first of its kind on the East Coast.

Due to tight budget constraints on the project, Entech conducted a feasibility study in order to compare the costs of traditional steel vs. composite construction technologies. Based upon the findings of the study, Entech designed, specified and bid both construction technologies against each other and ultimately saved PA American over $100,000 in construction costs at bid time, and reduced the construction time frame by nearly one full year. Additionally, Entech had to overcome site constraints as a result of adjacent property owners and the fact that the site was within close proximity to the flight path of the nearby regional airport. Property access and easement coordination up front was essential, as well as coordination, permitting, and design concept discussions with the FAA.

Based upon the cost benefit of a composite tank, and the accelerated time frame for construction due to a reduction in necessary steel work, a composite tank was the technology of choice. Entech provided the planning, design, permitting, and construction engineering services for this “first of its kind on the East Coast” tank. Entech’s unique tank design also incorporated storage and chemical feed facilities within the tank, as well as cell tower accommodations for multiple carriers. To control this new facility, a local SCADA control system was designed and integrated into PA American’s existing system-wide SCADA network.

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File Name			Size
		Pennsylvania-American Water Company - Limerick Elevated Water Tank	(83K PDF)