Projects

Artesian Road Pipeline
Gillespie Field
Graham Reservoir
La Mesa Fire Station
Lindbergh Field
Miramonte Reservoir
Twin Oaks Reservoir Tank No. 2


Twin Oaks Reservoir Tank No. 2

IEC is currently performing construction management and inspection services for the Twin Oaks Reservoir No. 2, soon to be the largest pre-stressed concrete tank in the world. When complete, the tank will be 40 feet high with an inside diameter of 432 feet making the total capacity 40 million gallons. The tank will include 249 miles of pre-stressed wrapping strand, 22,950 CY of concrete, and 575,000 pounds of steel. The project will be constructed in three phases: mass grading, reservoir construction and final site improvements. When the third phase is complete, the reservoir will be completely buried and landscaped, concealing it from the surrounding community. In combination with the Twin Oaks Reservoir No. 1, an existing 33 MG tank on the same site, this project will complete the ultimate master plan for storage facilities on the Twin Oaks site, having an overall water storage capacity of 73 MG.


North Twin Oaks Tank No.1 & 2

40mg Tank
Aerial view of Twin Oaks Reservoir

 

• Maximized use of site to allow construction of largest tank possible

• Negotiated construction cost for the tank

• Developed 3 separate sets of construction documents to reduce the overall schedule

Other News Links:
ENR Cover Story
As seen in ENR!

Gigantic Water Tank Being Built In North County
It's a work in progress, big as the infield at Qualcomm Stadium. It's a 40 million-gallon reservoir located in the hills of San Marcos. . . .
more

A Mighty Tank
Vallecitos Water District is building 40 million-gallon reservoir in San Marcos. . . .more