TANK INSTALLATION REQUIREMENTS

To ensure trouble free operation and increase the life span of your equipment please ensure that your storage tank is installed on to the correct base.

This information can also be downloaded as a PDF document here:

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TANK DIMENSIONS

Tank Dimensions

Tank Capacity ‘Litres’
Dimensions ‘A’mm
Dimensions ‘B’mm
Ground Loading (Tonne)
5000
3000
3000
5.5
3500
3500
2700
4

BASE DETAILS

Base Information

PAVING SLAB BASE

Constructed from tightly abutted 900mm x 600mm x 50mm thick pre-cast concrete paving slabs to create a stable base (See Table 1).

CONCRETE BASE

A142 steel mesh should be incorporated as reinforcement.
Base constructed from 100mm minimum thickness 1:2:4 concrete base laid on top of 100mm minimum of compacted hardcore to create a stable base ( See Table 2).

 

BASE

To be flat, smooth and level to within +/- 10mm

GROUND TYPES

It is important to establish the stability of the ground to determine the thickness of the compacted hardcore.

Bases constructed of paving slabs will require a more substantial compacted hardcore base due to the increased potential of movement.

To enable identification of subsoil “ground type” the following field or site ‘Heel test’ shall be used.

HEEL TEST

Remove the top vegetated soil layer until the processed level for the addition of hardcore is reached.  A full grown man is then to stand on one leg on the heel of one foot on the exposed soil layer.  The man then steps off and inspects whether or not any imprint is made.

The results of the test should be compared to the following table to determine the recommended minimum thickness of compacted hardcore.

All hardcore must be compacted using a wacker plate.

 
TABLE 1 – HEEL TEST FOR PAVING SLAB BASES
Subsoil Heel Test Result Recommended minimum thickness of compacted hardcore
Rock No heel print 150mm
Firm No heel print 200mm
Soft 1mm heel print 300mm
Very Soft Deep heel print See note below

Note:- Very Soft subsoil conditions are not suitable for bases constructed of paving slabs.

TABLE 2 – HEEL TEST FOR CAST CONCRETE BASES
Subsoil Heel Test Result Recommended minimum thickness of compacted hardcore
Rock No heel print 100mm
Firm No heel print 100mm
Soft 1mm heel print 200mm
Very Soft Deep heel print 300mm

Failure to adhere to these installation requirements will invalidate your products warranty


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