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Concrete water tank information

Concrete Water Tanks built onsite and to suit your exact needs
Underground and Aboveground concrete water tank solutions

Tank sizes

13 Different standard round sizes ranging from 16,400L up to 360,000L with various roof loading from pedestrian traffic only to W80 bridge loading for heavy vehicles

North Coast Tanks also custom build tanks in various sizes and shapes. For example: square, rectangle or oval shaped tanks designed to suit your specific site requirements. All tanks are engineered and are able to be above ground, partially buried or completely buried with various load ratings capable of having fill or traffic on top of them.
Actual tank volume may vary depending on tank loading, engineering and plumbing requirements

Capacity (litres)

16400
21000
24000
33200
45400
52600
60200
68500
90000
112000
160000
250000
360000

Capacity (gallons)

3620
4620
5500
7300
10000
11600
13260
15100
20000
25000
35000
55000
79000

Diameter
(mm)

3750
3750
4100
4500
5600
6000
6400
6800
7700
8500
10000
12500
15000

Height
(mm)

2100
2400
2400
2400
2400
2400
2400
2400
2400
2400
2400
2400
2400

Excavation (min)

5.2m x 5.2m
5.2m x 5.2m
5.4m x 5.4m
6.0m x 6.0m
7.1m x 7.1m
7.5m x 7.5m
7.9m x 7.9m
8.3m x 8.3m
9.2m x 9.2m
10.0m x 10.0m
11.5m x 11.5m
14.0m x 14.0m
16.5m x 16.5m
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Tank designs

Engineered Designed Concrete Water Tanks

All North Coast Tanks are engineered designed with a minimum 150mm thick walls and floor, up to 200mm thick walls and floor on our larger tanks. North Coast Tanks also use as a minimum 72 reinforcing mesh in conjunction will 12mm reinforcing bar. Our larger tanks use either 82 reinforcing mesh or 92 mesh as well as 16mm reinforcing bar throughout.

Standard tank

In ground to maximum depth of 2.3m 

For non-traffic areas 

Suits light load, eg. clothes hoist (not supplied) 

Suitable as retaining wall 

Can be covered with garden-mulch (but not soil) 

Light load bearing tank

Rated for foot-trafic

Suitable as base for light construction, eg, pergola, garden shed, court-yard, etc.

Can be covered with up to 300mm of fill.

In ground to maximum depth of 2.3m

Suitable as retaining wall

Medium load bearing tank

In ground to maximum depth of 2.3m

For light vehicle load areas

Suitable as base for carport or driveway

May have slab constructed over top

Suitable as retaining wall

Underground tank

Can be buried to a variety of depths in both trafficable and non-trafficable areas

Purpose built: eg. great for storm-water harvesting

Specifications depend on the individual site conditions & customer requirements.

May have slab constructed over top

Concrete Water Tank Repairs

Internal "spray out" repair

If installed correctly by a licensed and experienced operator, a concrete water tank should last a lifetime. 

 

Was it installed by an inexperienced operator? Has age finally caught up with your concrete water tank? Have tree roots ruined your tank? Are you losing water due to poor workmanship?

 

If you have answered YES to any of these questions North Coast Tanks may have the solution for you. With over 40 years on-site experience we have developed a method of restoring old cracked concrete water tanks back to life. North Coast places reinforcing steel over all internal walls and floor, then re-sprays concrete over the entire internal walls and floor resulting in a seamless concrete finish. 

Swimming Pool to Water Tank Conversions

Do you have an inground pool that you want to fill in or take out?

Pool removal can be expensive but you can use your unwanted pool to your advantage and have North Coast Tanks convert it to a water tank. 

Converting your swimming pool to a water tank allows you will recover usable space, eliminate pool maintenance costs and save on water consumption costs. Call us now to discuss how we can help you. 

Standard inclusions

Above ground tanks

One 32mm Brass outlet socket

One 32mm Brass hex nipple

One 32mm Brass gate valve

One 400mm or 500mm mosquito proof inlet stainer

Two 100mm pvc overflow sockets with a 100mm

mosquito proof screen

Lockable childproof aluminium access hatch

In ground tanks

One 32mm brass outlet socket

One 32mm suction line PVC Pressure

One 32mm Philmac Footvalve

Two 100mm pvc overflow sockets with a 100mm

mosquito proof screen

Lockable childproof aluminium access hatc

Site requirements & construction details

work-area

Level pad

In order to maximise the life of your concrete water tank it is imperative that your tank is built on firm consistent natural ground (no fill). Should this not be achievable it is possible to use concrete piers to ensure the stability of the tank. Once the pad is cut and level, we also require approximately 50mm to 100mm of 10mm or 20mm drainage gravel spread evenly over the base of the pad.

Excavations

All tank prices quoted DO NOT include any site preparation. North Coast Tanks has a team of experienced sub-contractors that have been working with us and our team for many years. North Coast Tanks are more that happy to advise on pricing for the preparation of your site for your new concrete water tank. Should you be happy to proceed we will also be there to supervise the excavation.

Access

Difficult access is North Coast Tanks speciality. Whether your site is situated on the beautiful Blackall Range, The D'Aguilar Range or at the beach at Teewah on Noosa's North Shore. North Coast Tanks has built concrete water tanks all-over South-East Queensland and Northern NSW. If we can get a concrete truck within approximately 50m, we can generally build you a Concrete Water Tank.

Schedule

Generally North Coast Tanks average lead time is 6 to 8 weeks. That being said should you require your tank sooner please give us a call as we regularly leave vacancies for Builders and Commercial jobs so we will be able to accommodate your build schedule.

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