1. General rule 1.0.1 is formulated to standardize construction technology, unify construction quality inspection and acceptance standards, and ensure work and quality, in order to ensure the construction of water supply and drainage (below the cylinder is supplied to non water) pipeline transportation villages. 0.2 This regulation is applicable to the construction and inspection of outdoor water supply pipeline L Ya for newly born, expanded, and renovated public facilities and facilities in Po Town. It is not applicable to the acceptance and acceptance of water supply and drainage pipelines with special requirements in T industry enterprises. The variety, specifications, and performance of materials, semi-finished products, finished products, and other products used in the reverse engineering of 1.0.3 water supply pipes must comply with relevant national standards and design requirements. Products that come into contact with water must comply with relevant hygiene requirements. It is strictly prohibited to use products that have been explicitly eliminated by the state or have tea techniques 1. The construction and removal of 0.4 water supply and drainage pipeline engineering should comply with wooden specifications (In addition to regulations, it should comply with the current national standards. 2 Terminology 2. 0.1 Yulizhu Road refers to water supply and drainage pipelines with a working pressure greater than or equal to 0.1 MPa. 2. 0.2 Non pressure pipelines. This specification refers to non water supply pipelines with a working pressure less than 0.1 MPa. 2. 0.3 Rigid pipelines mainly rely on the strength of the pipe material to support external forces. Under external load conditions, their deformation is very small, and the failure of Ningdao is mainly due to the control of the crown of the pipe wall. This specification refers to Hejinke concrete, pre tensioned concrete pipe connection and pre tensioned simple temperature concrete pipe, which are 2.04 flexible pipes with significant deformation under external load conditions. The vertical load is mostly balanced by the expansion force generated by the soil on the side of the pipeline, and the failure of the pipeline is usually caused by the intersection rather than the failure of the entire pipeline. This specification mainly refers to columbium pipes, chemical building materials pipes, and flexible ductile iron pipes. The 0.5 rigid interface cannot withstand the axial line displacement and relative angle displacement of the sensitivity of the pipeline connection 1, such as the pipeline interface that needs to be sealed with cement material or connected with a rough flange. 2.0.6 The flexible interface can withstand the displacement of the axis line and the relative angle of the snow track interface, such as the use of rubber rings and other materials for injection connected pipelines according to C2.0 7. This regulation for chemical building materials pipes refers to the general term for slope high fiber pipes or glass fiber reinforced thermosetting single material pipes (referred to as glass adjacent pipes), polyvinyl chloride pipes (UPVC), polyethylene pipes (PE), polyene pipes (PP), and their plastic composite pipes. 2.0:8 The pipes are made of bricks, stones, and concrete blocks, and reinforced concrete is poured on site or reinforced concrete is used as a rectangular shape with prefabricated components, The construction method for constructing pipelines (pipelines) within the trench is described in section 2.0.9 of the water conveyance channel with arched and other irregular sections. 2.0.10 The second method of constructing a trench or constructing a pipeline route (strategy) is to excavate the trench below the ground along the pipeline without excavation, such as the method of sheet pipe, shield tunneling, shallow buried underground excavation, gas station positioning, and ramming. 2.0.11 Pipeline Crossing Treatment: When the construction pipeline intersects or is close to the existing pipeline, it is necessary to ensure the safety of the flow work and the safe operation of the existing pipeline