Although our tanks will hold whatever you want them to, the most popular use is for potable water. These tanks come in 4 standard diameters for increased cost effectiveness. However, we also have a more flexible (although not quite as efficient) forming system which allows us to do any diameter above 20′. Before Construction starts, we provide the structural design for the reservoir to obtain the proper permits. Once the permitting is obtained and the subgrade prepared, we pour a concrete base around service pipes already sticking up out of the ground.
The walls are then formed and poured. Our system is not a traditional slip form system in the sense that we do not end up with one continuous pour from bottom to top. We pour our walls in 5′ high sections allowing the concrete to harden before raising the forms for the next 5′ section. This produces cold joints which we seal using a bentonite water stop. Using this forming system, we can go up to 75′ in 5’ increments. We finish with a free span concrete roof. All concrete is rebar reinforced and poured in place. For a list of our standard tank sizes and the gallons each holds, please see Tank Sizes. For options in our nonstandard sizes, call or email us. We can discuss your project needs and options to give you the reservoir that will serve you best within your budget.
All our tanks come standard with an access inspection hatch in the roof, a screened air vent, a screened 4” overflow piped to ground level, galvanized ladders (inside and outside) and a mechanical water level indicator. All these accessories comply with the “Recommended Standards for Water Work, latest edition, by Great Lakes – Upper Mississippi River Board of State Sanitary Engineers”.
The tanks are structurally designed in accordance with the latest versions of the ACI codes for municipal water and the International Uniform Building Code, IBC. Each tank is designed as an essential facility for your specific site location to the earthquake requirements of the IBC (earthquake zones of the old UBC codes are out). The standard roof design is for a 45 P.S.F. live load, but heavier roof loading designs are available where heavier loads, such as snow, are a factor. Structural drawings and calculations will be supplied for each contract. The static soil bearing of each tank is shown on the drawings and it is the responsibility of the owner/project engineer to ensure that the soil on the tank site is suitable for the loading. Click here for more on soils
All reservoirs are guaranteed against defects in materials and workmanship for a period of one year after construction as long as they are filled in a timely fashion.