城市规划相关知识精讲班第20讲讲义(Urban planning related knowledge, lectures, lectures, lectures, Twentieth).docVIP
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城市规划相关知识精讲班第20讲讲义(Urban planning related knowledge, lectures, lectures, lectures, Twentieth)
城市规划相关知识精讲班第20讲讲义(Urban planning related knowledge, lectures, lectures, lectures, Twentieth)
Urban planning related knowledge, intensive lectures, Twentieth lectures, courseware, handouts (Global vocational education online)
Urban planning related knowledge, lectures, lectures, lectures, Twentieth
Familiar with the principle of common pipe laying
(three) familiar with the principle of common pipe laying;
(1) the heat pipe shall not be combined with electric power, communication cables and pressure pipes;
(2) the drainage pipe shall be arranged at the bottom of the ditch. When there is a corrosive medium pipe in the trench, the drain pipe shall be located above it;
(3) the elevation of the corrosive medium pipeline shall be lower than other pipelines in the trench;
(4) fire hazards belong to a, B, C, liquid, liquefied petroleum gas, flammable gas, toxic gas and liquid, and corrosive medium, and shall not be laid in common ditch;
(5) pipelines that may affect each other shall not be laid in common ditch.
(four) familiar with related technical terms
(1) comprehensive terminology
1. horizontal horizontal distance: the horizontal distance between the adjacent two pipelines laid in parallel direction.
2. line vertical clearance: the vertical distance between the top of the outer wall of the pipeline and the lowest point of the outer wall of the pipeline when the two pipelines are crossed.
3. pipeline laying depth: refers to the ground to the bottom of the pipe (wall) distance, that is, the ground elevation minus the pipe elevation. 4. pipeline soil depth: refers to the ground to the top of the pipe (outer wall) distance.
5. line of the same type: the same profession, and the same use of functional engineering pipeline.
6., different types of pipelines: refers to the use of different functions of the engineering pipeline.
7., special canal: refers to the laying of the same category of engineering pipelines dedicated ditch.
8., integrated pipe ditch: refers to different typ
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