Water Tank Concrete Slabs
Above ground water tanks are becoming increasingly popular as the water charges rise. Tanks are ideal to save any rain water and use in your garden or pool (with an inline simple filtration system).
But no matter the size of the tank, the weight to ratio is always going to be very heavy once the tanks fill up. And for this very reason, you must have a good base.
Simply laying down a concrete slab will not cut it. Sure, it will be just fine for a while but depending on what sort of ground it is on, your concrete will soon begin to crack and drop on one or two sides and eventually the stress on your tank will also start to show faults before it splits, cracks or buckles.
We know that when installing a water tank the location choices are very limited. And that means you may have to select a permanent spot with a soft ground. If the base is not set correctly rocky and uneven ground with little preparation causes under mining of base and tank plus in addition to that, sharp objects can eventually protrude through the tank.
The Concrete Gold Coast team know exactly what is required for any sort of ground. Soft, dry, sloping. Even on the side of a hill (may need engineers report for that one).
But the best water tank slab options are always this no matter the water tank size;
- Firm level ground
- 100mm box and compacted crusher dust (not sand)
- 100mm reinforced concrete
- Slab to be a minimum of 200mm greater than the tank base diameter (ie; 100mm either side or all round)
- Tank overflow should not fall from higher up as the continual pounding on the dirt will undermine the tanks slab
- Ensure that the base has some sort of retainment to prevent erosion, e.g. retaining beams
- If required, we can install securing brackets into the concrete to keep a tank with little water from ‘bouncing’ (and ruining pipe connections) or blowing over and away in strong winds