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Installation instructions for installing water tanks

The instructions given must be followed when burying the tank. In cases where easy self-installation is not possible, consult the manufacturer or competent experts. Landslides, floods and other difficult terrains require the advice of an experienced expert. We also offer advice and presence at the time of burial, which allows you to install correctly and with quality.

TRANSPORT OF THE TANK

The tank must be on a level surface during transport. Care must be taken to avoid any sharp edges that could damage the tank. The tank should be secured to the means of transport with polyester or similar straps. Care must be taken to ensure that the belts are not too tight.

HANDLING THE TANK ON SITE

The tank is lifted and carried using lifting straps. Attach the lifting straps to the tank clamps or to the marked positions. The tank should be moved using suitable construction equipment, taking care to avoid damage to the tank. The tank must not be rolled or dragged.

TEMPORARY STORAGE

The tank must be stored on a suitable, level and smooth surface. You should be aware of any sharp objects on the ground that could cause damage to the tank. If the tank is damaged before installation, this must be reported immediately to the manufacturer. Repairs should be carried out in accordance with the manufacturer’s written instructions.

BEFORE INSTALLATION or BUILDING IN

Before installing the tank, the composition and properties of the soil must be carefully checked. The floor of the construction pit must be hardened and stable. In case of poor bearing capacity of the ground, a cushion with gravel material 40 cm thick or concrete must be constructed. The cushion must be consolidated to a minimum compaction of 60 MPa. Excavated material must be removed from the excavation pit so that it does not mix with the backfill material.

EXCAVATION DIMENSIONS

The floor area of the construction pit should be 60–100 cm larger than the floor area of the tank. The tank must be a minimum of 150 cm from the building and a minimum of 200 cm from the carriageway. If the type of terrain permits, dig a construction pit with walls as vertical as possible (the embankment angle of the soil and safe working measures must be taken into account). All applicable safety and building regulations must be observed during installation. The depth of the excavation must be coordinated with the design and dimensions of the tank.

BACKFILL MATERIAL

The material used to fill the tank must be of the correct granulation. The material must be washed free of ice or snow, clay, particles of coarse granulation and other organic particles. Suitable material is sandy gravel or crushed stone with a granular size of 4–16 mm. Backfilling and compaction of the backfill material should be carried out in phases or in 300 mm thick layers. The tank must be filled with water at the same time, so that the level of backfill material and water in the tank is the same at all times. This gives the same lateral pressure on the tank wall. Each layer must be well consolidated with lightweight compaction machines. When backfilling, the elevation and cover must be placed on the tank.

ANCHORING THE TANK

Anchor lugs (20 mm diameter stainless steel rod) must be installed in the base plate. A rope or cable made of stainless steel and resistant material should be attached to the anchor lugs using wire clips. The rope or wire rope is tensioned using a tension nut. All fixing materials should be made of stainless steel. To prevent direct pressure of the rope on the container, place a geotextile (approx. 100 mm wide) between the surface of the tank and the rope. On the tank on which the clamps are installed, the anchoring should be executed at the clamp lugs. Polyester straps can also be used instead of stainless steel ropes.

FOUNDATION RF PLATE

The foundation reinforced concrete slab is made on a hardened base. The minimum thickness of the foundation AB slab is 200 mm (sizing is performed by a static). It must be reinforced with two reinforcing mesh. The base plate must be 600 mm wider than the floor dimensions of the tank.

TRAFFIC LOAD

The traffic load must not be transferred directly to the tank. Therefore, an AB relief slab must be constructed above the tank. The AB slab is dimensioned by a structural engineer according to the load and the AB slab must be properly supported. In case of traffic loads, an LTŽ cover must be installed on the tank.

PHOTO DOCUMENTATION OF INSTALLATION

In order to claim the against the warranty in case of damage to the tank, the entire installation must be photodocumented. The manufacturer shall not be held liable for any damage to the tank caused during the digging process in case of incorrect installation of the tank.

Easy installation – WALKING AREA

ROTO rezervoarji za vodo navodila za vgradnjo rezervoarja faza 1

1. PHASE - Pit preparation

The floor area of the construction pit must be 60–100 cm
larger than the floor area of the tank. If the type of terrain
permits, dig a construction pit with walls as vertical as
possible (the embankment angle of the soil and safe working
measures must be taken into account).
The planum of the construction pit must be level and
consolidated. If the soil is less load-bearing, a rehabilitation
cushion with gravel material 40 cm thick or lean concrete is
required. The rehabilitation cushion must be consolidated to
a minimum compaction of 60 MPa
A sand bed at least 15 cm thick shall be laid on the prepared
sub-base. Sand with a granulation of 0–4 mm is placed in the
construction pit and levelled.

ROTO rezervoarji za vodo navodila za vgradnjo rezervoarja faza 2

2. PHASE - installation in the pit

Carefully place the tank on a level sand bed (lifted by a
suitable mobile lifting or working machine) and level it using
a water balance.
Adjust the tank extensions (inspection openings) to the final
ground level.
The telescopic extension adjusts to the final terrain by
tightening and loosening. The integrated extension is
adjusted by removing the adapter with the cover and cutting
the neck to the appropriate final ground level.
It is important that the extension and the cover are placed on
the tank when backfilling.

ROTO rezervoarji za vodo navodila za vgradnjo rezervoarja faza 3

3. PHASE - backfill

Backfill the tank up to 30 cm measured from the bottom of
the tank with 4–16 mm fraction and simultaneously fill it with
water up to 30 cm measured from the bottom of the tank (fill
all compartments).
Care must be taken to ensure that the fraction is well fed
under the rounded parts of the tank. The filling of the tank
with water and backfilling with fraction is repeated in 30 cm
increments until the tank is backfilled to the first connection.
When backfilling the tank, we need to pay attention to the
level of the connections (inlet, outlet, etc.) to ensure that they
are made in time.

ROTO rezervoarji za vodo navodila za vgradnjo rezervoarja faza 4

4. PHASE - Final embankment

Once the connections have been properly connected and are watertight, the pit is backfilled with fraction up to the last 25 cm.

Place geotextile over the backfill with 4–16 mm fraction – over the entire tank area.

The last 25 cm of backfill is made with the soil excavated when digging the construction pit. Care must be taken not to fill the tank lid.

The maximum height of the embankment above the top of the tank is 80 cm.

In case of impermeable terrain, drainage around the tank is mandatory.

 

Special installations – UNDERGROUND WATER

The floor area of the construction pit must be 60–100 cm larger than the floor area of the tank. If the type of terrain permits, dig a construction pit with walls as vertical as possible (take into account the angle of the soil and safe working measures).

The planum of the construction pit must be level and consolidated. If the soil is less load-bearing, a rehabilitation cushion with 30–40 cm thick gravel material or concrete is required. The rehabilitation cushion must be consolidated to a minimum compaction of 60 MPa.

A reinforced concrete floor slab with a thickness of approx. 20 cm with inset reinforcement grid. The floor slab must be 60 cm wider than the dimensions of the tank (dimensioning of the AB floor slab to be carried out by a structural engineer). Stainless steel anchors are inserted into the floor slab (anchoring procedure described in point 7).

The tank is carefully placed on a prepared concrete slab (installed with a suitable mobile lift truck or excavator) and levelled using a water balance. The telescopic threaded extension is adjusted to the final ground level. The tank is secured to the anchors using 12 mm steel braided rope. All fixing materials must be made of stainless steel (anchoring described in point 7).

A drainage pipe with a diameter of fi 110 is installed around the tank and fed into the sump with the pump. Particular attention should be paid to the backfill under the curved parts of the tank. At the same time, the tank must be filled with water (all chambers). The filling of the tank with water and backfilling with gravel fraction 4–16 mm is repeated in 30 cm increments – up to the maximum groundwater level. Above the maximum level and up to the last 25 cm, the tank is backfilled with a gravel fraction of 4–16 mm. We need to pay attention to the connection levels so that we can make them in time.

During installation, the connection of the tank (inlet, outlet) is executed. Continue backfilling up to the last 25 cm.

Place geotextile (200 g/m2) over the backfill with 4–16 mm fraction – over the entire area of the tank.

The last 25 cm of the backfill is backfilled with soil (200 g/m2 geotextile is applied before backfilling). Care must be taken not to fill the tank lid.

The maximum height of the embankment above the tank is 80 cm.

ROTO rezervoarji za deževnico hranilniki vode navodila za vkop rezervoarja visoka podtalna voda

Special installations – ROAD SURFACES

The floor area of the construction pit must be 60–100 cm larger than the floor area of the tank. If the type of terrain permits, dig a construction pit with walls as vertical as possible (take into account the angle of the soil and safe working measures).

The planum of the construction pit must be level and consolidated. If the soil is less load-bearing, a rehabilitation cushion

with 30–40 cm thick gravel material or concrete is required. The rehabilitation cushion must be consolidated to a minimum compaction of 60 MPa.

A sand bed at least 15 cm thick shall be laid on the prepared sub-base. Sand with a granulation of 0–4 mm is placed in the construction pit and levelled.

The tank is carefully placed on a sand bed (installed with a suitable mobile lift truck or excavator) and levelled using a water balance. The telescopic threaded extension can be adjusted to the desired level.

Backfill the tank up to 30 cm measured from the bottom of the tank with 4–16 mm fraction and simultaneously fill it with water up to 30 cm measured from the bottom of the tank (fill all compartments). Care must be taken to ensure that the fraction is well fed under the rounded parts of the tank. The filling of the tank with water and backfilling with fraction is repeated in 30 cm increments until the tank is backfilled to the level of the connections.

Make the connections to the tank (inlets, outlets, etc.). Backfill the rest of the construction pit up to the last 25 cm with 4–16 mm fraction.

The fraction is relieved by an AB slab with a thickness of approx. 20 cm with embedded reinforcing mesh (sizing of the slab to be carried out by a structural engineer according to the load). The edge of the AB slab shall extend at least 1 metre laterally from the construction pit.

Install an cast iron cover over the inlet.

The maximum height of the embankment above the tank is 80 cm.

In the case of impermeable terrain, drainage around the tank must be carried out in the same way as in the case of a groundwater trench.

ROTO rezervoarji za deževnico hranilniki vode navodila za vkop rezervoarja povozne površine

Special installations – DEEP INSTALLATION

The floor area of the construction pit must be 60–100 cm larger than the floor area of the tank. If the type of terrain permits, dig a construction pit with walls as vertical as possible (take into account the angle of the soil and safe working measures).

The planum of the construction pit must be level and consolidated. If the soil is less load-bearing, a rehabilitation cushion with 30–40 cm thick gravel material or concrete is required. The rehabilitation cushion must be consolidated to a minimum compaction of 60 MPa.

A 15 cm thick sand bed (0–4 mm granularity) is placed on the prepared sub-base. The bed must be properly aligned.

The tank is carefully placed on the sand bed (installed with a suitable mobile lift truck or excavator) and levelled using a water balance. The telescopic threaded extension can be adjusted to the desired level. If there is an integrated extension above the tank, cut it off and reposition the adapter with the cover.

Backfill the tank up to 30 cm measured from the bottom of the tank with 4–16 mm fraction and simultaneously fill it with water up to 30 cm measured from the bottom of the tank (fill all compartments). Care must be taken to ensure that the fraction is well fed under the rounded parts of the tank. The filling of the tank with water and backfilling with fraction is repeated in 30 cm increments up to the level of the connections. When backfilling, pay attention to the connections to ensure that they are made in time.

Make the connections to the tank (inlets, outlets, etc.). After the connections have been made, backfill the construction pit up to the last 25 cm of the overhang.

The fraction is relieved by an AB slab with a thickness of approx. 20 cm with embedded reinforcing mesh (sizing of the slab to be carried out by a structural engineer according to the load). The edge of the AB slab should extend at least 1 metre laterally from the

construction pit.

A PE access shaft with a clear opening of at least 100 cm should be installed above the AB relief slab. The height of the shaft should

be adjusted to the final ground level. At greater depths, it is obligatory to provide an access stair or ladder.

ROTO rezervoarji za deževnico hranilniki vode navodila za vkop rezervoarja globoki vkop

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