There should be sufficient space between the resulting columns of bars to allow access for vibrators and good compaction of the concrete.
2
在钢管脚手架上施工的电焊机、振捣器等用电设备应放置在枯燥的木板上，操作人员应穿戴绝缘的防护用品。
In the construction of steel pipe scaffold on electric welding machine, vibrator and other electrical equipment should be placed in dry wood, operators shall wear insulating protective equipment.
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