Section D2 - Backfill Around Chamber With Concrete (Ground) - Delta Dual V4 Installation Instructions Manual

11.0 Installation of Chamber - Section D2
Backfill around chamber with concrete
To be followed when installing chamber in the ground.
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Completely fill chamber with water.
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Allow concrete to cure.
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Fill void between soil and chamber with concrete
(min. C35 grade) or as per engineer's drawings.
Delta Dual V4/V6
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