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Rectangular tanks



Rectangular tanks are used as fire tanks, for storage of process and drinking water, light and heavy petroleum products. This form allows to install the tanks not only in the open space, but also indoors. At the facility they are located both aboveground and underground.

Advantages of rectangular tanks (in comparison with cylindrical tanks)

  • maximum efficient use of the entire volume
  • rational use of the facility area due to compactness
  • short production time
  • less metal consumption

Production of rectangular tanks at the Saratov Reservoir Plant

Monolithic rectangular tankThe Plant SARRZ manufactures rectangular tanks up to 100 m3. Depending on the properties of the stored product, low alloy, stainless or galvanized metal sheet is used.

The structural design depends on volume and Customer's requirements: rectangular tanks are made monolithic or appear as pre-fabricated assembly. The monolithic construction contributes to the rapid installation work. In the case of a prefabricated structure, all elements are delivered in separate metal panels, which are welded at site. To guarantee the geometry fidelity of the elements controlled assembly is carried out at the Plant.

The inner surface undergoes corrosion control treatment with primer and enamel.

Design consideration of rectangular tanks

Our Plant manufactures the following structural designs:

  • monolithic or prefabricated
  • with smooth shells or ribs

To store two or more different liquids division walls can be provided inside.

The choice of design depends on the design solution, operating conditions, pressure, location mode and other factors.

The nozzles and pipe branches are provided in the shell and the roof to connect flow line and pumping-out line, technological equipment installation. Manhole is traditionally located at the secondary tank, but it is possible to design it on the roof. Supports are welded to the bottom and form free space.

To allow access to the roof, stairs and a service platform can be additionally supplied.

Drawings of a rectangular tank with a volume of 16 m3

A-manhole, A1-hatch, B-the drain fitting, V- filling fitting , G-for level gage, D-pump, E-connection to the process chain, J-for emptying the tank, I-vent pipe

Drawing of rectangular tank with ribs

Calculation of a rectangular tank

Rectangular tankRectangular tank shape dictates the need for careful calculations aimed at ensuring structural integrity and saving of geometry throughout service life.

When designing, singlesided hydrostatic and radial pressure, pressure from the ground (in case of underground installation) and other parameters are calculated.

Technical specifications

Criteria Value
1 Volume, m3 up to 100
2 Pressure loading
3 Operating temperature from -40ºС to +40ºС
4 Operating product petroleum products, drinking water, process water, chemicals, alkalies
5 Material St3sp, 09G2S
6 If requiered
  • stress relieving of welds
  • coating
  • heating system
7 Service life, years 20


How to find out the cost of a rectangular tank?

In order to design and purchase a rectangular tank produced by our Plant, You can:

  • contact our experts by phone +7(8452)250-288
  • send a request for design at e-mail


See also:

Rectangular tanksSilos for granular materialsSilos for liquids
Silos for bulk materialsSurge tanksNon-pressure tanks
Pressure tanksHot wellsTanks for CHP-plants, NPGS and HPP
Stainless steel tanks