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Installation of large capacity tanks

Transport and Lifting

Transport: risers incorporating pre-assembled filtration systems. For reasons of space during transport, they are to be positioned on the devices during installation.

Lifting: Lifting operations are carried out using slings arranged according to the diagram above

POSE ENTERREE

Under green space, without water table and without risque of rolling load

The cover of the standard extension is located at the level of the natural ground (800mm backfill above the tank maximum). Lay the device with slings on a bottom of stabilized excavation (sand for example).

- Place the device on a stable, horizontal excavation bed (compacted sand bed)

- Fill the shell halfway up with a 10-14 sand / gravel mixture, taking care of the closed spaces to ensure that the tank is properly seated.

- Proceed in successive layers (300 mm max)

- Stabilize the embankment by watering between each layer (no mechanical compaction device)

- Simultaneously pour the tank in order to balance the backfill level and the internal water level

- Fill the top of the tank with gravel 10-14

- Put in place the riser filter and connect the pipes to the network

- Complete the backfilling to the natural terrain

Warning: the mass of ballast in case of water table must be higher than the archimedean pressure