The structure of the tank consists of hot-dip galvanized steel elements. The cylindrical jacket is made of single steel panels (sheets) with standardized dimensions. The thickness of the metal sheets used depends on the size of the tank and the standard of its manufacture and is selected on the basis of the strength and static calculations performed. The sheets are made of S350GD steel, galvanized on both sides, with a zinc coating thickness of Z275, Z350 or Z600. The mantle's panels are properly perforated and the horizontal and vertical connections are screwed. The selection of the zinc coating is based on the calculation of the planned service life of the tank structure, based on the corrosivity class of the environment in which it is to be installed. At the top and bottom, the tank is topped with a perimeter angle.
The roof is made as a self-supporting structure, based on "Z" steel beams with a slope from the center of the tank. The roof is available in two variants: uninsulated made of trapezoidal sheet T35 or insulated from roof sandwich panels with a core of mineral wool, polystyrene or PIR. Roof panels with a covering width of 1150 mm allow for simple and quick assembly onto the structure using appropriate pass-through fasteners. Properly designed and profiled tongue-and-groove locks ensure very good tightness and quick assembly. The roof structure ensures easy drainage of rainwater outside the tank.
Depending on the static and strength calculations, we use a system of peripheral clamps "wind reinforcements".
The tanks roof can be accessed by a system of steel ladders with landings and platforms. There is a hatch on the roof that allows to view the inside of the tank. The tank is attached with anchors to the foundation plate, which is also the bottom of the tank.
