When you have the right tools, you can’t find it challenging to install an underground water tank. However, you need to be cautious to avoid falling into the ground. This is why you need all installation instructions provided by the tank’s manufacturer before you begin the process.
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Use Proper Backfill Materials
Using the right backfill materials lowers the risk of the tank collapsing. The best choice for this job is pea gravel, although you can also use sand and native soil. Ensure that the soil doesn’t have sharp objects that can damage your tank.
Start by measuring the dimensions of your tank. Leave additional space, ideally at least half a meter on all sides. Excavate a depth that leaves adequate space for covering the tank.
Prepare the Base
After excavation, remove any roots and any other objects that can compromise the flatness of the base. Again, pea gravel is the best material for your tank’s base. If you have to settle for sand, ensure that it is porous and free of potentially harmful substances, like rocks.
Set the Tank
Position the tank in the middle of the hole. If you are using heavy machinery like cranes to lower the tank, level it before removing the straps. This prevents challenges in case you need further excavation.
The next step involves installing bulkhead fittings in the tank. You must connect flexible hose pipes to these fittings. This prevents unwanted movements that can damage the fittings. Also, add vents to prevent the tank from shrinking when you are pumping water out.
Remove the lid and the gasket that comes with the tank. Then, fit the risers using the included bolts and nuts. To ensure drainage during overflows, mound the soil over the top after adding the risers.
The last step of installing an underground tank is adding a backfill. Ideally, you should use gravel, sand, or red soil. Always ensure that the backfill doesn’t have wood, clay, or steel.
It is worth noting that underground water tanks can weigh up to 200 kilograms, depending on capacity. For this reason, ensure that you exercise caution when offloading and positioning the tank to avoid cracking it. This is why you need a small crane or a forklift when doing this job.
Underground water tanks are better than above-ground tanks because they are less susceptible to damage by burglars and adverse weather conditions. This makes them a more worthwhile investment. Moreover, they don’t affect your landscaping and are unaffected by microbial organisms.
Often, you have to choose between plastic and concrete tanks. Plastic tanks can last for over 50 years without servicing. On the other hand, concrete tanks need frequent maintenance, also called re-lining. You can’t estimate the longevity of these tanks because it depends on the quality of construction. Regardless of your choice, ensure that you maintain your tank correctly to prolong its lifetime.