Technical specification of red mud (Bayer) subgrades application for highway engineering Technical specifications for geological mapping of highway engineering Technical Specification for Foundation Piles Testing of Highway Engineering Technical specifications for geological driling of highway engineering Technical specification of construction for subgrade foundation in Sichuan Province Technical specifications for utilization of construction waste in highway engineering Technical specification for buried plastic pipeline of sewer engineering Technical specification for fiber reinforced concrete structures of railway engineering Hydrological specifications for survey and design of highway engineering Technical specification for assembled curtain wall engineering