Yes, automatic bollards need a concrete pit for the retracting cylinder, drainage and control equipment. Depth depends on the model, from around 0.5 m for light-duty units to over 1 m for high-security types.
The pit also needs a drainage path so water does not collect, and ducts for power and control cables. Underground services must be checked before excavation. A site visit confirms depth and layout, so ask us about automatic bollard installation for your entrance.
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