轨道交通工程建设项目的勘察、设计、施工、监理，应当通过招标投标，由具备相应资质等级的单位承担。

The prospecting, design, construction work and supervision of the construction project of CRC engineering shall be undertaken by the unit with appropriate qualification grade through public bidding.

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第五十六条建筑工程的勘察、设计单位必须对其勘察、设计的质量负责。

Article 56 Surveying and designing units of a construction project shall be responsible for the quality of the survey and design.

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