第四部分讲述成渝铁路的总工程量及重点工程；

The fourth part mainly probes into the general and vital project of the CR.

这种结构能够实现主梁的轻型化，进而减轻下部结构的工程量。

The type of structure can achieve light-duty of girders, thus reduces the engineering work of its substructure.

根据初步结算信息审核工程量及其单价，并与承包商就此进行谈判，确保精确的决算价。

According to draft settlement information to audit the amount of project of works and to negotiate the remaining issues with the contractor to ensure accurate settlement.

本工程量清单应连同投标人须知、合同的通用和专用条件、技术规范以及图纸一并进行阅读。

The Bill of Quantities shall be read in conjunction with the Instructions to Bidders, General and Special Conditions of Contract, Technical Specifications, and Drawings.