Water Tanks | Modtank

Step 2 – stacking the modules

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The Maximum Stacking Height for Modtank is four (4) layers only (2050mm). Hydrostatic regression testing simulating a 50 year life has been carried out for a stack 4 high only. Do NOT Exceed This.
Apart for the top layer, remove the tops of the transfer spigots as previous. Using the food grade lubricant provided, smear both the inside walls as shown. Using the sealing tape and the plugs provided, seal off the bottom side outlets.
Fit the two O-rings as shown.
On the top of the bottom layer, cross stack the modules to ensure that each module has at least one connector attached to every joining tank. When the tank system fills, water will flow to the bottom of one section then rise throught the connectors to fill another section and so on. If you can afford the water, add 10 litres to each module after you put it in place. Cross stacking (like laying bricks) adds stability to the tank structure.
The super slimline configuration has to have the top layer stepped as shown to allow water transfer between the vertical columns of modules. Also as a precaution during high winds when empty, the top rows need to be attached to an upright or wall with galvanized brackets or metal strapping.