This specification is formulated to unify the national urban road subgrade construction technical standards, ensure the quality of road subgrade engineering, and improve the economic benefits of engineering. This specification is applicable to the construction and acceptance of urban roads (including suburban roads) and squares; parking lot subgrade engineering. It can be used as a reference for special roads such as factories, mines, airports, and docks. CJJ 44-1991 Urban Road Subgrade Construction and Acceptance Specification CJJ44-1991 Standard Download Decompression Password: www.bzxz.net

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