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How do I know what roof loading I need for my concrete tank?

We often get asked this question and there is no "one size fits all" solution. Every tank installation is different and dependent on where the tank is going to be situated. Some points to think about when deciding on the right roof loading for you:

  • Where on my property is the tank going to be situated?
  • Do I want to bury the tank so that I can’t see the roof or am I OK to have the roof showing?
  • If I want to bury the tank, what would I like to put on top of the tank?
  • Will the tank be situated somewhere where I will need to drive over the top? If so, how heavy will the vehicle be?

Below are some rough rules around what each of the roof loadings mean. Please be aware as mentioned above, this is not a one size fits all but it gives you an idea of some of the more popular requests we receive:

Roof showing – Holds 1.5 tonne – Pedestrian loading but NOT crowd loading

3KPA roof loading – Holds 3 tonne – Equivalent of 400mm soil loading on top

5KPA roof loading – Holds 5 tonne – Able to have a small vehicle drive over the top

40KPA roof loading – Holds 40 tonne – Able to have heavy vehicles drive over the top

There are many other options available such as building a shed over the top, burying with more soil or even a gazebo. For more information, please give us a call to discuss the right option for you!