Vehicular Traffic
E1 has been tested to AS/NZS 2566:
1-1998 with a load rating of 28kpa. Performance of the tank is dependent on the surrounding native soil, embedment and depth of buried tank.
Non Vehicular Traffic
Tanks in non-critical areas can be placed at any depth that is required.
Stormwater Retention Tanks
Underground Retention/Detention of
Stormwater or Rainwater
Used in subdivisions, household lots and commercial applications.
The E1 stormwater system is a modular underground retention tank fully tested and designed to withstand ground and water pressure at depth. The E1 is engineered by geotechnical experts including Finite element analysis (FEA). E1 Tank is a very simple tank to work with. Large manholes with tamper proof lids, multiple areas for stormwater inlet/outlet and allowance for easy linking to other tanks or systems, all combine to make the E1 stormwater system your ideal choice.
Promax provides the total solution, from working with planners,
right through to on-site delivery anywhere in New Zealand.
- Multiple inlet/outlet panels
- Tested and complies with AS/NZ 25661: 1998
- Threaded fittings available
- Rubber uni-seals for plumbing tank to stormwater
- Capacity: 3500 L - 30,000 L
- Custom made to suit customer plans or site