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Step 7: After concrete is hardened on support columns, backfill about 3/4
way up tank in layered, compacted 6” lifts using sand, stone dust, pea
stone or equivalent material that form-fits into tank corrugations. Keep
backfill material damp to assure compact backfill.
Step 6: Fill tank with fresh water
to Low Water Level (LWL) mark
in all 3 chambers.
Note: Start with center chamber
and alternate chambers while
filling for evenly balanced fill.
Recheck that tank is level to 1/8”
per 2 feet (10mm per 2 meter or
1/200), (fore and aft as well as side
to side), as tank balance might be
altered after it is filled with water.
Please note: To ensure tank water tightness, check in 24 hours to be sure that the water level
has not dropped. Contact your distributor or FujiClean USA if water level has dropped.
Step 5: Set tank
Note: It is acceptable to set tank
before setting and pouring
concrete columns.
Water
Check tank is level to 1/8” per 2 feet,
(10mm per 2 meter or 1/200), fore and
aft as well as side to side.
Water
