The construction unit when the tower crane foundation, must ensure that the endurance meets the design requirements, the strength of reinforced concrete at least the design value of 80%.
施工单位在做塔吊基础的时候，一定要确保地耐力符合设计要求，钢筋混凝土的强度至少达到设计值的80%。
Unreasonable design project can arose the capsizal of tower crane in building its base on soft soil foundation, and it will also increase the construction cost.
在软土地基中建造塔吊基础，设计方案的不合理会引发塔吊倾覆的安全事故，或加大了项目成本。
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