Pipeline engineering is very important in project construction. It is like the “blood vessel” of a building, which provides guarantee for water, electricity and heating projects. There are many points that need to be paid attention to when planning pipelines, including indoor and outdoor layout. We have sorted them out, below share with you.
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External pipeline planning
(1) When arranging the pipeline belt, it should be in line with the road or building red line, and the same pipeline should avoid turning from one side of the road to the other;
(2) The routing area should avoid areas such as soft soil, earthquake fault zone, subsidence area, and high groundwater level;
(3) When the pipelines are arranged to intersect with roads or highways, they should be arranged in a vertical intersecting manner. If the vertical intersecting does not meet the requirements, they can be intersected obliquely, but it should be noted that the minimum intersecting angle is not less than 30°;
(4) When the pipelines are comprehensively arranged, the main pipes should be arranged on the side with more users or the pipelines should be arranged on both sides of the road by classification, and the crossing of the pipelines at the road intersection should be reduced.
Staged laying points
(1) Pay attention to avoid considering the short-term and long-term relationships separately in the phased construction, and should combine them appropriately, focus on the short-term, and pay attention that the short-term pipeline construction will not affect the long-term land use planning;
(2) When laying pipelines, make full use of existing pipelines, and when they cannot be used, they must be discarded or replaced after comprehensive technical and economic comparison analysis;
(3) The planned position of the engineering pipeline under the road should be fixed as far as possible, and the relationships that affect the foundation of the building, such as deep burial, short maintenance period, flammable and flammable, etc., should be arranged as far away from the building as possible;
(4) Control the minimum horizontal clear distance, the minimum vertical clear distance and the minimum covering soil depth of the underground pipelines to meet the standard requirements.
Layout order on both sides of the road
It should be arranged on both sides of the road for electricity, telecommunication, gas supply, water supply, heat, gas transmission, water supply, rainwater and sewage.
Pipe Network Planning Considerations
(1) When planning the pipeline network, it is necessary to analyze the rationality of the distribution of main pipelines, and determine the specific locations of key planning nodes and main pipelines;
(2) Draw the comprehensive overall planning plan of the pipeline and the standard cross-sectional view of the pipeline comprehensive road, and mark the distance between the power and telecommunication overhead lines and the red line of the building;
(3) Determine the layout position and depth of various pipelines;
(4) Review whether the intersections and turning points in the comprehensive pipeline layout plan have collisions, whether the clearance height is reasonable, and whether the starting and ending elevations and coordinates are accurate.
Points for attention in centralized laying
When there are many pipeline facilities or the surrounding environment is complex, pipelines should be laid in a centralized manner. The precautions are as follows:
(1) Arrange the corrosive medium pipeline at the bottom of the ditch, if there is no corrosive medium pipeline, arrange the drainage pipeline at the bottom of the ditch;
(2) Medium pipelines such as liquids, combustible gases, toxic gases and liquids with fire hazard shall not be laid in co-ditch;
(3) Pipelines that may affect each other cannot coexist in the same trench.
Pipeline Conflict Solutions
When there is a contradiction in the comprehensive arrangement of pipelines, avoid them in the following order.
The different types of pipeline avoidance principles are:
(1) The pressure pipe is the self-flowing pipe; (2) the easy-bend pipe is the one that is not easy to bend.
The same kind of pipeline avoidance principle is:
(1) Branch pipes give way to main pipes; (2) Small pipes give way to large pipes.