For example trench excavation for plumbing pipes are governed by the same rules of measurement as trench excavation for drain pipes.
为安装水管所进行的渠道开挖的工程量所用的计算规则条目,与为排水渠所开挖的工程量是相同的。
Ultra excavation: cable trench excavation shall not exceed the bottom elevation. If ultra-dig in some places, obtain the consent of design units.
沟底超挖:开挖矿用电缆沟不得超过沟底标高,如个别地方超挖时,其处理方法应取得设计单位的同意。
Slope with slow slope rate, Foundation trench excavation of earth and backfilling of earth are both relatively larger and the project is not economic;
基槽边坡坡率采用过缓,基槽开挖量和回填量均较大,工程不经济;
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