The outdoor comprehensive pipe network involves a variety of specialties, and the construction should make reasonable overall arrangements for the pipelines, and comprehensively solve the contradictions between the professional pipeline layouts and their mutual contradictions. Now systematically share the principles of outdoor integrated pipe network construction for your reference and implementation.
The "four lets" principle of outdoor comprehensive pipe network construction:
1. Pressurized pipes let non-pressurized pipes
2. Buried shallow pipesLet buried deep pipes
3. Single-tube to double-tube
4. Flexible material pipes make rigid material pipes
When there is a contradiction in the vertical position of the engineering pipeline, the following principles should be followed:
1. Pressure pipes to give gravity to the self-flowing lines
2. Bendable pipelines make it difficult to bend pipelines
3. Branch pipelines give way to trunk pipelines
4. Small diameter pipelines make large diameter pipelines
5. Power cables and telecommunication pipelines should be kept away, and arranged in accordance with the principle that power pipelines are on the east or south side of the road, and telecommunication pipelines are on the west or north side of the road
6. As far as possible, arrange pipelines with similar properties and similar buried depths
7. Create a new pipeline to make an existing pipeline
8. If the amount of construction is small, let the amount of construction be large
9. The number of overhauls is small and convenient, and the number of overhauls is large and inconvenient
Cross-Sort Order:
1. All kinds of engineering pipelines should not be overlapped in the vertical direction and laid directly buried
2. The water supply pipe should be above the drainage pipe
3. Gas pipes should be above other pipes (except for thermal pipes)
4. The power pipeline should be below the thermal pipe and above the other pipes
5. The heat pipe should be above the combustible gas pipeline and water supply pipe
6. The elevation of the engineering pipeline at the intersection shall be determined according to the elevation of the drainage pipeline
Example of an underground pipeline crossing
The water supply pipe should be above the drainage pipe
Gas pipes should be above other pipes (except for thermal pipes)
Power pipes should be under thermal pipes and above other pipes
The heat pipe should be above the combustible gas pipeline and the water supply pipe
Pipe network construction sequence:
Measurement of pay-off→ foundation trench excavation→ foundation construction→ pipeline installation→ pipe trench backfilling
When there is a crossing of the pipeline, pay attention to meet the minimum vertical clear distance:
Key points of the review of the integrated pipe network:
➣ Gas
Consider distance from other pipelines, especially when intersecting
Review whether the location of the regulator station affects the normal use
Consider gas pipeline backfilling
➣ Heat
Whether the location of the heat exchange station is appropriate
Check the pipe elevation at the intersection with other pipes
➣ Water supply
Determine whether the location of the pump room and the main pipeline can meet the normal use of the entire park
Check the elevation at the intersection of the water supply pipeline
➣ Drainage
Check the elevation of the pipeline and the elevation of the municipal mains to see if the water can be discharged
Since the pipeline is a non-pressure pipeline, it is necessary to carefully check the slope direction of each pipeline
➣ Electricity
Pay attention to the spacing with other pipes
Combined with the review of the garden construction and greening landscape:
The integrated pipe network is not only constrained by underground and above-ground buildings, but also by garden construction and green landscape. In order to control the intersection of landscape structures, garden sketches and greening group planting with the municipal comprehensive pipe network, it will affect the later garden construction, and even lead to the failure of individual municipal pipelines to accept, thereby affecting the timely delivery and normal use of the project. In the design stage of the garden project, it is necessary to closely combine the design scheme of the municipal comprehensive pipe network and the comprehensive pipe network diagram to carry out the review of the drawings to ensure the normal realization of the landscape effect and the normal delivery and use of the municipal pipeline. The key points of drawing review are as follows:
1. Whether important nodes such as landscape structures, sketches, and important entrances and exits avoid gas pressure regulating boxes and outdoor box-type substations;
2. Whether the location of the large group green space avoids the area with dense pipelines;
3. In principle, the professional pipelines cannot pass through the small courtyard on the first floor, so as not to affect the future maintenance, especially to control the manhole of the main pipeline into the small courtyard;
4. Gas pipelines are required to have no structures within 1 meter of vertical and horizontal directions, including sketches, water features, permanent flower bowls and fences, etc., and no arbors and large shrubs can be planted. No structures and trees and shrubs can be planted within 1.2 meters around the outdoor gas pressure regulating box;
5. There should be no structures and trees and shrubs planted in the vertical direction of tap water and fire lines, and pond balls and hedges can be planted. The position of the water pump adapter for fire protection should not be designed with high terrain as much as possible, and the well chamber of the water pump adapter should not be raised and lowered according to the terrain at will;
6. If the power pipeline intersects with the green planting and structure, the municipal pipeline or the power bureau can be coordinated to adjust, but if the elevation of the pipeline in and out of the house has been confirmed and the building has been reserved, adjusting the horizontal and vertical position of the pipeline may increase the cost, and the optimization plan will be determined after comprehensive comparison. Try to avoid power tube wells (chambers) for planting.
7. The water supply and drainage pipeline must strictly control its buried depth, check whether there are water supply and drainage pipelines at the lowest point in the landscape plan, including the lowest point of the green space, the location of the pool and the water system, and whether the elevation of the landscape design can meet the buried depth requirements of the water pipe. Try to avoid the water supply and drainage pipelines from the water feature, and there should be no tube wells in the water feature;
8. Since the drainage pipe is a non-pressure pipe, the elevation of each municipal rainwater well must be understood before the design of the landscape drainage system to prevent rainwater backflow;
9. Generally, the drainage of the garage roof is from the middle to the surrounding or both sides of the drainage, if the green space between the two buildings is on the garage roof, it must be combined with the municipal rainwater well between the buildings, and increase the seepage and drainage pipes near the scattered water position of the building, especially the residential with a courtyard on the first floor, and the rainwater will be drained to the municipal rainwater well;
10. The septic tank should be located away from the main entrances, squares and high terrain as much as possible, so as to reduce the impact of air pollution on residents;
11. Landscape design should consider beautifying or weakening all kinds of exposed boxes that cannot be avoided.
Integrated pipe networks are an art that requires a consideration of all disciplines and an elevation check for each intersection. At the scene, it is also necessary to adjust the elevation and line position according to the actual situation of the site, and the water may not be discharged and the pipe connection may not be connected to the house if you are not careful. It takes a joint effort from designers to builders to achieve perfection.