Tricel Vitae UK6, Техническое руководство

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5.5.1.2 Excavation: depth
The inlet and outlet pipes determine the excavation depth, invert levels are relative to the
bottom of the tank and allowing for the minimum base thickness. Dimension details of the tank
provided on the relevant drawing; please refer to section 3, ‘Tricel Vitae Specification.’ Ground
instability, e.g. running sand may necessitate over-excavation and stabilisation with hard core
or blinding concrete. The standard depth of the excavation for both gravel and concrete
installations are outlined as follows:
“a” minimum (mm) “b” minimum (mm)
Dry site 250 250
Wet site 250 300