How To Install A Clark Rainwater Tank
Posted on Friday 26th October 2012
Site preparation and maintenance for a Clark polyethylene tank
- Uniform compaction (free from soft spots) and on level ground
- All bases must be at least 500mm greater than the diameter of the tank
- Ensure that the base has some sort of retainment to prevent erosion, e.g. retaining beams
- A flexible coupling must be fitted to each outlet to validate the guarantee
- Specifications for slab for 46,825L and 36,369L tanks:
- Slab must be at least 150mm bigger than the base diameter of the tank
- Slab must be at least 150mm thick with 2 layers of F82 mesh 75mm apart and a thickening of 200mm wide and 200mm deep with Y16 reo bar at the bottom of the thickening around the edge of the slab
- Slab must be 32 mpa concrete mix
- Ensure all plumbing from the outlets are well supported and cannot be knocked