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第1章总则1.1 范围本标准适用于以钢筒和钢丝加强的环向预应力混凝土压力管的制造,管径尺寸从16英寸至144英寸(曾根据本标准的概念制造更大尺寸的管子)。本标准中包括了两种类型的预应力管:(1)内衬式钢筒管,其管芯由钢筒及内衬混凝土构成,然后缠上钢丝,再用预拌砂浆作成保护层;(2)嵌置式钢筒管,其管芯由钢筒埋置于管壁混凝土中构成,然后缠上钢丝,再用预拌砂浆作成保护层。本标准不包括对管子的搬运、交付、铺设、野外试验或消毒灭菌的要求。这方面的资料见 AWWA M9“混凝土管手册”。
CHAPTER 1 GENERAL 1.1 Scope This standard applies to the manufacture of annular prestressed concrete pressure pipes reinforced with steel cylinders and steel wires from 16 in. To 144 in. In diameter (tubes of a larger size have been manufactured according to the concept of this standard) . This standard includes two types of prestressed pipe: (1) lined steel tube, the core by the steel tube and lined concrete composition, and then wrapped wire, and then made of ready-mixed mortar protective layer; 2) embedded steel tube, the tube by the steel tube embedded in the concrete wall tube composition, and then wrapped wire, and then made of ready-mixed mortar protective layer. This standard does not include the handling of the pipe, delivery, laying, field testing or disinfection and sterilization requirements. Information on this can be found in the AWWA M9 Concrete Pipe Handbook.