IG-049-EN version 02; 02/10/2017
16
Installation
General Instructions
ormaset
Kiosk-type prefabricated transformer substation
9.4.3. Levelling process
In order to properly install the
ormaset
enclosure, it is
important to take ground levelling into account, since this
decisively affects the stability of the equipment.
The following tools must be used for carrying out the
levelling:
• Spirit level.
• Levelling tools.
• Levelling board.
Once the excavation has been carried out, a layer of sand
of approximately 100 mm thick must be laid, then levelled
and compacted.
The existence of special ground conditions may require
modifying the
ormaset
installation regarding what has
been previously stated.
Non-compacted ground
Prepare a foundation suitable for the ground conditions,
and it may even be necessary to construct a reinforced
concrete bed to distribute the load over a wider surface.
Levelling with sand must then be carried out.
Sloping ground
The excavation should be carried out in such a way that the
base platform is on a hard area, as shown in the figure.
In these cases, it is recommended that rainwater from
the higher ground be channelled, to avoid it washing the
ground away from under the
ormaset
.
1
Minimum: 1000 mm
2
Level 0
Figure 9.2.
Detail of installation on sloping grounds
Ground with a high water table
In those cases where the water table is above the location
of the
ormaset
foundation plate, proceed as indicated in
the figure:
1
Level 0
2
Water table
Figure 9.3.
Detail of installation on ground with a high water table
Ground at risk of flooding
On ground where a risk of flooding exists, the
ormaset
foundation layer must be placed above the predicted
flooding level, as indicated in the figure.
In cases where the possibility exists for the layer of
foundation sand to be washed away, it is recommended
that a cement - sand mixture be used for this purpose.
1
45º Slope
2
Predicted Flood Level
3
Level 0
Figure 9.4.
Detail of installation on ground with risk of flooding
Dimensions in mm.
Summary of Contents for Ormazabal ormaset
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