Technical specification for buried plastic pipeline of sewer engineering Technical specification for buried unplasticized polyvinyl chloride pipeline of drainage engineering Technical specifications for buton asphalt rock in pavement engineering Technical specifications for geological driling of highway engineering Technical specifications for geological mapping of highway engineering Technical specification for assembled curtain wall engineering Technical Specification for Foundation Piles Testing of Highway Engineering Technical specification for fiber reinforced concrete structures of railway engineering Technical specifiction for secondary water supply engineering Technical specification for risk assessment of in-service highway slope engineering