Percussive piling work is prohibited during the restricted hours and requires a permit even during daytime.

至于撞击式打桩工程，则禁止在限制时间内施工；即使在日间进行，也须领有许可证。

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Percussive piling work is prohibited during the restricted hours and requires a permit even during daytime.

至于撞击式打桩工程，则禁止在限制时间内施工；即使在日间进行，也须领有许可证。

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