This standard specifies the definition, grade, materials, design requirements, test requirements and markings of the water catchment top cover and well top cover in the civil airport flight area. This standard is suitable for installation in the civil airport flight area with a net aperture of 1 000 mm (inclusive). ) below the top cover of the water collection port and the top cover of the underground well.
MH/T 6107-2014 Referenced Document
GB 1499 Hot rolled ribbed steel bars for the reinforcement of concrete
GB/T 11352 Carbon steel castings for general engineering purpose