Preparing your site for a concrete tank

Preparing your site for a concrete tank is an important first step you must take before having your concrete tank installed. 

Below are some pointers on what is required:

• Tanks must be constructed on natural level solid ground
• We recommend 50mm thick layer of gravel and 20mm aggregate at the base of the tank
• Site must be properly compacted and have a laser levelled foundation
• Tanks can be constructed above or below ground. Above ground requires concrete pump at additional cost. Tanks also out of the ground more then 800mm also require a concrete pump at additional cost.
• There must be sufficient access for trucks. Require 5 metre wide truck set up point near hole.
• Prior to excavation we recommend calling us if you require further information or site inspection.
• Once the concrete tank is constructed you must take care when backfilling around the tank to keeps its structural stability.
• Overflow pipe to be diverted away from tank base
• Tanks fully in the ground must never be empty. Once the tank is completed, fill the tank with a minimum of 25%.
• Empty tanks are buoyant. Do not let water on the outside of the tank in the excavated hole build up as the tank will float.
• Do not put excavated soil on hole edge. Keep 1 metre clear around hole edge for construction

For more information, please refer to our Site Preparation page.