What are the general principles for the layout of drainage pipes?

According to the master plan of the city.

Combined with the actual local situation. Layout of drainage pipes and technical and economic comparison of several schemes. First of all, it is necessary to determine the boundary of the drain outlet, and then arrange the drain pipes in the order of the main pipe, the main pipe, and the branch pipe.

Make the most of the terrain and use the possible gravity flow to discharge sewage and stormwater, and minimize the shortest and deepest buried pipelines. Adjust the relationship with other underground pipelines, roads and other projects, and consider the connection with pipelines. Facilitation of the construction, operation, and maintenance of pipelines should be considered when planning.

When planning the layout, the possibility of phased construction should be considered in the near future, leaving sufficient room for development.

The principle of drain pipe placement is as follows, and the pipeline is short. The depth is small, and it is best to decide according to the principle of artesian discharge. The drain takes the form of possible gravity flow to avoid lifts.

Sewage flows by gravity in the pipes, so the pipes should have a slope. Drainage pipes are usually routed parallel along roads, buildings. Dry sewer is usually placed along pipes, not under narrow roads or open spaces where there are no roads, and should usually be located on the sidewalk on the side with a large amount of sewage or few underground pipes.

Under the green belt or slow lane.

When the pipeline is buried in depth, it should not be less than meters. When the pipeline is buried deep in the foundation, it should not be less than a meter. Try not to cross the ground and underground structures along the drainage lines. The pipeline should be placed in the building with more discharge pipes and drainage volume.

The big side. There is no restriction if the corner of the water flow at the rotation and intersection of the drainage pipe must be greater than 90, the diameter of the pipe must be less than 300, and the downspout head must be greater than meters. I hope mine can help you, and I hope you can help me**.

The design principle of the layout of the water supply pipeline, the layout of the water supply pipeline should consider the safe water supply. Water quality is not polluted, pipelines are not damaged, production is not affected, equipment is convenient for maintenance and other factors. Therefore, the following principles should be followed when designing.

The arrangement of water supply pipelines must not hinder production operations, transportation, and the use of buildings. When in contact with water, do not place on equipment that causes burning, **, or damage. Switchroom.

Power distribution equipment, instruments, etc. Water supply pipes cannot pass through equipment foundations, air ducts, pipes, shop windows, closets, wood interior decoration, etc.

The distance from the sanitary appliances to the discharge pipe should be the shortest, and the pipe should be the least turned; The drainage riser should be close to the drainage point with the largest drainage; Overhead pipelines shall not be laid in production plants with special requirements for production technology or hygiene, as well as in instrument and valuable commodity warehouses, ventilation rooms, substation and distribution rooms and elevator machine rooms; Drainage pipes shall not pass through settlement joints, expansion joints, deformation joints, flues and air ducts; Drainage buried pipelines shall not be arranged in the foundation that may be crushed by heavy objects or cross the production setting; The drainage riser shall not pass through bedrooms, wards and other rooms with high requirements for hygiene and quiet, and should not be close to the interior walls adjacent to the bedroom; Drainage pipes should not pass through shop windows and wall cabinets.

Drainage pipes cannot pass through settlement joints, expansion joints, deformation joints, flues and air ducts. The drainage riser should not pass through the bedroom, not through the room with high requirements for hygiene and quiet, and should not be close to the interior wall adjacent to the bedroom.

It should be arranged according to the specific situation, and there are certain rules for the thickness of the water pipes and the depth of the water pipes buried in the ground. The depth of burial is also determined by the weight of the surface building.

The first is to fully consider the terrain, the second is to use gravity flow to design some slopes, and the third pipe must be thick enough, so that the drainage pipe can be drained quickly.

The layout of drainage pipes in the building shall meet the following requirements:

The distance from the sanitary appliances to the discharge pipe should be the shortest, and the pipe should be the least turned;

The drainage riser should be close to the drainage point with the largest drainage;

Overhead pipelines shall not be laid in production plants with special requirements for production technology or hygiene, as well as in instrument and valuable commodity warehouses, ventilation rooms, substation and distribution rooms and elevator machine rooms;

Drainage pipes shall not pass through settlement joints, expansion joints, deformation joints, flues and air ducts; Drainage buried pipelines shall not be arranged in the foundation that may be crushed by heavy objects or cross the production setting;

The drainage riser shall not pass through bedrooms, wards and other rooms with high requirements for hygiene and quiet, and should not be close to the interior walls adjacent to the bedroom;

Drainage pipes should not pass through shop windows and wall cabinets.

1.Double-tube uplink and down-feed type.

This arrangement is also known as the upper split heating system, and its heating main pipe is directly introduced into the ceiling or ceiling of the top floor of the building from the outside, and then the riser is sent to the radiator of the following layers respectively by the top floor, and the return water main pipe is laid on the bottom floor of the building.

2.Single-tube uplink and down-feeding:

There is only one riser connected to the radiator in this arrangement, and the heating and return pipes are laid in the same way as the double pipes. This ensures that the flow of heat into the radiators on each floor is the same and that there is no vertical misalignment.

3.Downlink up-give:

This arrangement is also known as the sub-split heating system, in which the heating main pipe is directly introduced into the indoor ground floor of the building from the outside, and then sent to the radiators on the above floors through the riser.

4.Horizontal tandem:

Its heating system is characterized by a simple structure, saving pipes and reducing crossing of floor slabs.

1. Direct water supply.

1) Description of water supply mode: directly connected to the external water supply pipe network, and the water pressure of the external network is used to supply water.

2) Scope of application: (single-storey or multi-storey building) external network water pressure, water volume can often meet the water requirements, room.

There are no special requirements for internal water supply. When the pressure of the external network exceeds the allowable value, a pressure reducing device should be provided. Preference should be given.

Choose a direct water supply.

2. The water supply method of the water tank.

1) Water supply mode description: directly connected to the external water supply pipe network, using the external network water pressure water supply, and setting a high position at the same time.

The tank regulates the flow and pressure.

2) Scope of application: (multi-storey buildings) the pressure of the external network is periodically insufficient, and the indoor water pressure is required to be stable and allowed.

A high-level water tank is allowed.

3. The water supply method of the pump and water tank.

1) Description of water supply mode: the water pump directly pumps water from the external pipe network and uses the high-level water tank to adjust the flow, and the water supply can also be directly supplied when the water pressure of the external network is high.

2) Scope of application: (multi-storey building) the pressure of the external network is often or intermittently insufficient, and the external network allows direct pumping, and allows the setting of high-level water tanks. If the municipality does not allow direct pumping, a pool will need to be added.

Pumping water in the pool.

4. Pneumatic water supply mode.

1) Description of water supply mode: the water pump is used to directly pump water from the external network for pressurization, and the air pressure water supply tank is used to regulate the flow.

volume and control of pump operation.

2) Scope of application: (multi-storey buildings) the pressure of the external network is often insufficient, and the water pressure is allowed to fluctuate to a certain extent, and it is not appropriate to set up a high-level water tank.

What are the general principles of drainage pipe layout? Start by determining the boundaries of the watershed, watershed, and drainage system, and then organize the drainage pipes. The drainage pipe network should be organized in the order of supervisors, supervisors and departmental pipelines according to the overall urban plan and MS planning, combined with the actual local situation, and the technical and economic comparison of multiple schemes should be carried out; Determine the drainage area and drainage system, then organize the drainage network, and the FIM moves from the main pipe to the branch pipe.

The input and output pipelines should avoid the above-mentioned crossings and underground structures as much as possible.

The pipes had to be laid out along the many descarga pipes of the building and with a large drainage. When turning and connecting drainage pipes, the water flow angle shall not be organized; According to the overall plan of the city, the drainage pipes were organized in combination with the actual local conditions, and the technical and economic comparison of several schemes was carried out. The drainage area and drainage system are first determined, and then the drainage pipes of the branch main pipes are organized, the principles of their arrangement are as follows: they must be determined according to the principles of short pipes, low depths and free flow drainage, the drainage pipes should adopt gravity flow rates as much as possible, and the fim should avoid elevations.

Due to the gravity of the sewage passing through the pipes, the drainage pipes must not pass through the factory drainage pipes, expansion devices, deformation devices, and flow rates. The main daily drainage pipes are designed for installation in the principle of sanitary plumbing. The main points of your handling are as follows:

Rising fecal sewers should be close to sanitary pipes so that fecal sewage enters the elevator at a lower distance. Duct. Buried drainage pipes should not be organized first.

The drainage area and drainage system are first determined, and then the drainage network is organized in the order of the main branch pipes.

Make full use of the terrain and use gravity flow to discharge sewage and rainwater, so that the pipes are short and the buried depth is small. Coordination that may be affected by heavy loads or cross-production should be determined on the basis of the principle of short pipes, small burial depths and relying on their own flow as much as possible. Elevated FIM should be avoided.

Since sewage flows by gravity in the pipes, the pipes should have a slope. Define the foundation. There is no need to calculate the location of the hidden drain; Place in the drain.

In order to reduce the project cost, what are the characteristics of ultra-quiet drainage pipes.

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What are the principles of the layout of the pro-drainage pipeline are as follows: 1) The cable tray and the pipeline for transporting liquid should be set up separately. (2) Ensure the layout of the gravity flow pipeline first.

3) Considering the construction sequence, the pipeline to be constructed first is inside, and the pipeline to be insulated is placed in a position that is easy to construct. (4) Pipelines with large pipe diameters first, and pipelines with small pipe diameters later. (5) Layered arrangement, from top to bottom according to the order of steam, hot water, water supply and drainage pipelines.

The layout of the drainage pipe network should follow the following principles: (1) Arrange the drainage pipes in accordance with the overall urban plan and the actual local situation, and make a technical and economic comparison of multiple schemes. (2) Determine the drainage area and drainage system first, and then arrange the drainage pipes in the order from the main pipe to the branch pipe.

3) Make full use of the terrain and use gravity flow to drain sewage and rainwater, so that the pipeline is the shortest and the deep burial is the smallest. (4) Coordinate the relationship with other pipelines, cables and roads, and consider the connection of internal pipes of the enterprise. (5) When planning, it is necessary to take into account the convenience of construction, operation and maintenance of pipes and canals.

6) Combine long-term and short-term planning, consider development, and arrange phased implementation as much as possible. The difference between the design parameters of the stormwater pipe and the design of the sewage pipe: (1) The filling degree of the stormwater pipe is designed according to the full pipe flow, the open channel should have an overheight equal to or greater than that, and the street side should have an overheight equal to or greater than that; (2) The minimum design flow rate in the pipe channel should be greater than that of the sewage pipe, and the minimum design flow rate in the pipe when the flow is full, and the open channel is.

3) The minimum slope is determined according to the minimum flow velocity, which is generally not less than in the block, not less than under the street, and not less than the connecting pipe of the rainwater inlet. (4) Minimum pipe diameter: the minimum pipe diameter under the specified street is 300mm, and the minimum slope; The minimum pipe diameter in the neighborhood is 200mm, and the minimum slope is used.

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The layout of drainage pipes in the building shall meet the following requirements:

The distance from the sanitary appliances to the discharge pipe should be the shortest, and the pipe should be the least turned; The drainage riser should be close to the drainage point with the largest drainage capacity; Overhead pipelines shall not be laid in production plants with special requirements for production technology or hygiene, as well as in instrument and valuable commodity warehouses, ventilation rooms, substation and distribution rooms and elevator machine rooms; The drainage pipe shall not pass through the sinking potato land descending joint, expansion joint, deformation joint, flue and hand-dismantled air duct; Drainage buried pipelines shall not be arranged in the foundation that may be crushed by heavy objects or cross the production setting; The drainage riser shall not pass through bedrooms, wards and other rooms with high requirements for hygiene and quiet, and should not be close to the interior walls adjacent to the bedroom; Drainage pipes should not pass through shop windows and wall cabinets.

The principles for the layout of drainage pipes are as follows:

1. It is determined according to the principle of short pipeline, small buried depth, and self-flow discharge as much as possible. The drainage pipes should be in the form of gravity flow as much as possible to avoid lifting. Since sewage flows by gravity in the pipes, the pipes must have a slope.

2. Drainage pipes are generally laid in parallel along roads and buildings. Sewage mains are generally arranged along pipelines, and should not be located under narrow roads, nor on open spaces without roads, but usually under pedestrian cracked silver roads, green belts or slow lanes on the side with a large amount of sewage or fewer underground pipelines.

3. When the buried depth of the pipeline is shallower than the foundation, it should not be less than; When the pipeline is buried deep than the foundation, it should not be less than.

4. Avoid crossing the above-ground and underground structures as much as possible for the drainage pipeline.

5. The pipeline should be arranged on the side of the building with many discharge pipes and large drainage.

6. At the turning and junction of the drainage pipeline, the flow angle of the water should not be less than 90°, and when the pipe diameter is less than 300 and the falling head is larger, it can not be restricted.

The layout principles of drainage pipes mainly include the following points:

1.Slope: The pipeline should have a certain slope to ensure smooth drainage. Generally, the slope of indoor drainage pipes is 1-2%.

2.Avoid bending: When the pipeline is arranged, bends should be avoided as much as possible to ensure the rapid flow of the rough rock for drainage and avoid blockage.

3.Pipe diameter: The diameter of the pipe should be reasonably selected according to the actual needs, too small pipes are easy to cause blockage, and too large pipes are not economical.

4.Diversion: When arranging pipes, drainage pipes with different functions should be separated, such as toilet drains, shower drains, and floor drain drains, which are more conducive to management and maintenance.

5.Connection: The pipeline connection should be firm and reliable, and the jujube cover should not leak.

6.Insulation: In cold areas, pipelines are susceptible to freezing in winter, and water supply and drainage pipes should be insulated.