1.0.1 This Specification is formulated with a view to improve the technical levels for construction of highway subgrade engineering and to ensure the construction quality.
1.0.2 This Specification is applicable to the construction of newly-built and renovated (extended) subgrade engineering.
1.0.3 The highway subgrade shall meet the strength, stability and durability required by the design.
1.0.4 The construction of highway subgrade must abide by the laws and regulations on national safety production, so as to establish technical safety measures, to promote safety management, to strictly implement the safe operation specification, and therefore, to ensure the safety construction.
1.0.5 The construction of highway subgrade must abide by the laws and regulations of national occupational healthy safety, so as to sound the employees' healthy safety control system and ameliorate the safety conditions of occupational health.
1.0.6 The construction of highway subgrade must abide by relevant laws and regulations on national ecology, environmental protection and land management, so as to protect the geomorphy of the existing vegetation and prevent noise and dust nuisance. Moreover, the construction wastes must be carefully disposed.
1.0.7 The construction of highway subgrade must abide by the laws and regulations on protection of national historical relics; once meeting the cultural relics, the construction shall be ceased immediately, and the site must be well protected and shall be treated carefully together with the organizations all concerned.
1.0.8 Construction management plan shall be prepared before the construction of the highway subgrade.
1.0.9 As for the construction of highway subgrade, new technology, new process, new material and new facilities are encouraged to be adopted while meeting the quality standard.
1.0.10 The subgrade in special road segments should be dynamically constructed.
1.0.11 Not only the requirements stipulated in this Specification, but also those in the current relevant ones of the nation shall be complied with in the construction of highway subgrade.
