Update on jack hammering

I gave up at about 11am and left for the day – the noise and vibrations were horrible.

As I understand the max vibration today was 1.15mm/s. They tell me that 5 mm/s would damage buildings and 3.5 mm/s would trigger an alert to tell them to stop

Noise levels peaked at 76dB, well under their predictions.

They expect 5 more days of it.

They had told us that the jackhammer would have a noise shroud but they now have discovered that the shroud does not work with this jackhammer

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