Delivery & Site Preparation | What to put under a Water Tank | Tank Base
Delivery & Site Preparation
NRRTanks delivers Clark poly rainwater tanks across eligible areas of Australia. Delivery availability depends on your address, tank size, safe truck access and site conditions.
Delivery charges
Delivery is included for locations within 400 km of a Clark Tanks manufacturing branch in Dalby QLD, Bathurst NSW or Moama NSW.
- 400–500 km: $100 including GST per tank/product.
- 500–600 km: $200 including GST per tank/product.
- 600–700 km: $200 plus $5 including GST per kilometre beyond 600 km. An additional $200 applies for each second and subsequent tank delivered to the same address.
- Over 700 km: $700 plus $10 including GST per kilometre beyond 700 km. An additional $400 applies for each second and subsequent tank delivered to the same address.
Delivery timing is estimated when you order, based on stock availability, your delivery address and transport scheduling. For a confirmed freight quote, call NRRTanks on 02 6624 4662.
Truck access requirements
Please ensure adequate access for a truck and trailer combination measuring approximately 19.5 m long, 3.5 m wide and 5 m high. Contact us before ordering if access may be difficult; we will discuss available options.
Site preparation for your rainwater tank
- Locate the tank on level, stable ground with uniform compaction and no soft spots. Do not place large tanks near retaining walls or embankments without professional engineering advice confirming the ground can support the weight of a full tank.
- Remove sharp objects and stones from the site, then compact the surface.
- Spread an even 75–100 mm layer of metal, crusher dust or suitable bedding material over level ground. Make the prepared base at least 500 mm wider than the tank diameter. Sand may be used, but it can erode more easily.
- Compact and level the base before placing the tank on it. Backfill to the first rib where appropriate to help reduce erosion.
- Keep the bedding material contained beneath the tank and divert runoff away from the site. A suitable retaining edge, such as a cement strip, rocks or sleepers, can help prevent washout.
- For tank stands, make sure the stand is designed for the full tank weight and that support slats are no more than 20 mm apart.
- For concrete slabs, use a slab designed for the tank and soil conditions. The slab should extend at least 150 mm beyond the tank base diameter. Where soil stability is uncertain, consult a civil engineer for a site-specific design.
- Support all outlet plumbing so it cannot be knocked or place strain on the tank outlet. A flexible coupling can help reduce strain.
- Plumb overflows away from the tank site to reduce erosion risk.
Ongoing maintenance
Clark polyethylene tanks require minimal maintenance. Regularly check the tank base for erosion and remove leaves or debris from the roof catchment, inlet and overflow.
For delivery, access or site-preparation advice, please contact NRRTanks on 02 6624 4662 or use the enquiry form below.