7500 Litre GARANTIA XL Underground Water Tank
SKU: 07.2001
Dimensions: 3600L x 2250W x 1250H
Weight: 390kg
Do you want to harvest rain water without valuable surface space being taken up by a tank? Graf’s underground water tanks are made in Australia according to a patented and leading German-engineered design that provides optimum strength and a self-cleaning filter.
They are your perfect solution and so easy to install that two friends, two shovels and one morning is all that is necessary. No ballasting is necessary for the foundation and tanks come with child proof covers.
AVAILABLE IN VIC & NSW ONLY.
- 7,500 Litre / 1981 Gallon Capacity
- Optimal tank geometry and statics due to CAD product development – equals highest stability
- Unique fitting accuracy of the components
- Dome opening with stainless steel profile for precision fit and secure mounting
- Consistent quality due to constant production monitoring
- Vehicle or lorry-bearing (combined with Telescopic dome shaft with cast iron lid or TRUCK)
- Groundwater stable up to the middle of the tank thanks to extremely stable construction
- Can be expanded as required
- Easy installation due to low net weight
- The tank can also be used as a rainwater collection tank after cleaning
- 15 years warranty
- Larger connection fittings available on request.
**GRAF UNDERGROUND WATER TANKS ARE NOT SUITABLE FOR DRINKING WATER**
GarantiaXL / PlatinXL Installation Guide and Conditions
Coverage areas with telescopic dome shaft in green areas. (Top Picture)
Maximum coverage heights with extension and telescopic dome shaft in green areas only. (Middle Picture)
Cover heights with cast iron telescopic dome shaft (Class B) in area driven over by vehicles uo to 3.5 tonnes. (without Ground water and Stratum Water) (Bottom Picture)
Technical Data PlatinXL (Connection option DN110)
L = 3600mm
W = 2250mm
H1 = 1250mm
Htot = 2285mm
GarantiaXL / PLatinXL 10,000LT Tank Structure
Graf PlatinXL Installation and assembly
Construction site
Under all circumstances, the following points must be clarified prior to installation:
• The structural suitability of the ground
• Maximum groundwater levels which occur and drainage capability of the subsoil
• Types of loads which occur
An expert ground report should be requested from the local planning authority to determine the physical characteristics of the subsoil.
Trench
To ensure that sufficient space is available for working, the base area of the trench must exceed the dimensions of the tank by > 100 mm on each side; the distance from solid constructions must be at least 1000 mm.
If the depth of the trench is > 1250 mm an embankment must be designed. The construction site must be horizontal and plane and must guarantee sufficient load-bearing capacity.
The depth of the trench must be dimensioned so that the max. earth coverage (see section 2 – Installation Conditions) above the tank is not exceeded. To use the system throughout the entire year, it is necessary to install the tank and those parts of the system which conduct water in a frost-free area.
A layer of compacted, round-grain gravel (grain size 8/16, thickness approx. 100 – 150 mm) is applied as the foundation.
Embankment
On installation of the tank in the immediate vicinity (< 5 m) of an embankment, a statically calculated supporting wall must be erected to absorb the soil pressure. The wall must exceed the dimensions of the tank by at least 500 mm in all directions and must be located at least 1000 mm away from the tank.
Groundwater and cohesive (water-impermeable) soils (e.g. clay soil)
If it is anticipated that the tanks will be immersed deeper into the groundwater than its max. immersion depth (see table), sufficient dissipation must be ensured. Dissipation of the drainage water (e.g. via an annular drainage system) is recommended in the case of cohesive, water-impermeable soils.
Connection of multiple tanks
Two or more tanks are connected via the assemble services by means of Graf special seals and basic pipes (to be provided at construction site). The apertures must be drilled to the corresponding size using only the Graf special crown bit. It must be ensured that the distance between the tanks is at least 600mm. The pipes must project at least 200mm into the tanks.
