• Do not over excavate. Only dig the required cut out.
• Ideally a clean cut hole is best for installation of tank.
• Clear all debris and obstructions from around the site
• Prepare excavator and concrete truck access.
• Ensure that all minimum setback distances from buildings and boundary fences etc. are achieved.
• Ensure that the tank will be positioned so that the riser – used for access and connection to services is in the most convenient location
• Ensure that the necessary barricades are in place to make sure unauthorized persons cannot get close to the excavation area.
• Do not commence excavation if rain is forecast for that day.
• Ensure the soil is removed to a safe distance away from the excavation hole and activity.
• Ensure the hole is square (i.e. the sides are at 90 degrees to each other) and has a level base.
• Angle the batter according to the soil conditions to ensure stability.
• Ensure the base of the hole is smooth by removing any protruding objects, such as stone or rock,which may damage the tank.
• Remove any water from the excavation prior to tank installation.
• Backfill the tank from truck and aim it directly into the hole slowly, work the slurry around the base of the tank ensuring it fills all excavation voids.
• This assists in preventing surface water from working its way around tank. It assists in preventing uplift of tank.

• Excavation has to be done based on the size of the tank, keeping an allowance of 1feet all around for easy erection.
• You will need to have approximately 100mm deep of washed sand or crusher dust available for placement at the base of the excavation hole prior to lowering the tank into the hole. Ensure the sand or crusher dust is quite level at the base of the hole.
• Our concrete tanks do not need to be installed on a concrete base. However if this is the design, our tanks can be placed on a slab or PCC.
• Ensure there is adequate access for the heavy equipment required for the installation. Access of greater than 3 meters is recommended but you should check this distance with the excavator and concrete suppliers.

1. How deep does the excavation need to be if my scenario is different to the guidelines?

This will depend on whether you are using the lid as a slab or how deep tank is being buried give us a call and we can assist with your requirements.

2. Where can the concrete tank installed?

Beneath lawns, gardens, driveways, under garages, sheds.

3. Where can I use the water from the Precast Tank?

Flushing toilets, clothes washing, car washing and garden irrigation, fill up pools.

4. Does the concrete storage tank need to be regularly cleaned?

The Precast Tank may need to be periodically cleaned and this will depend on many local

factors. Please consult a professional tank cleaner if your tank requires cleaning. What we do know is water tastes far better stored underground out of the heat and light in a concrete enclosure.

Check your permissions to installing this tank

For instance, you may need a permit for installing or using the tank from your local municipal council or they may require a minimum set back distance from buildings and boundary fences. Your local water authority can advise if you need any additional backflow prevention products to be added to mains supplied water.

Concrete Tanks Poured on Site Vs Precast Concrete Tanks :

1. Why precast concrete tanks a good option for your site?

The bottom line is they could well prove safer. Precast tanks ensure site excavation is never open for long periods of time, therefore reducing the risk of accidents to both site workers and the visiting

public.

2. If you’re looking to keep your costs as low as possible?

You’ll also be pleased to discover that the installation of a precast concrete doesn’t require there to be lots of staff on hand, where a concrete tank poured on site might. Instead, installation is quick andstraightforward