What is organized drainage?

Question 1: What are the common organized drainage schemes? Organized drainage schemes can be divided into external drainage and internal drainage according to different specific conditions.

External drainage refers to a drainage scheme that rainwater pipes are installed outside the external wall of the building, and there is no rainwater bucket on the roof and no rainwater pipes inside the building. The structure is simple, and the rainwater pipe does not enter the room, which is beneficial to indoor beauty and reduces leakage. It is widely used, especially in collapsible loess area, which can avoid foundation settlement caused by downspout leakage, and is the first choice in southern China. According to the existence of gutter, it can be divided into eaves gutter drainage system and gutter drainage system.

1) external drainage type

A. Drainage outside eaves gutter

Roof rainwater is collected in the gutter protruding from the wall and then discharged through the downpipe. When a building has high and low roofs, the rainwater from the high roof can be drained to the low roof first, and then introduced into the ground from the gutter of the low roof. When the gutter drainage scheme is adopted, the horizontal distance of the water flow route should not exceed 24m to avoid roof leakage.

B. Drainage outside parapet

When overhangs are not expected due to architectural modeling and other reasons, the external wall is usually raised to seal the roof, and the part above the roof is called parapet. The characteristic of this scheme is that the rainwater collected by the roof needs to pass through the parapet and flow into the outdoor rainwater pipeline.

C. Drainage outside parapet eaves gutter

The external drainage scheme of parapet cornice is characterized by both parapet and cornice on the roof. This form is often used on the owner's roof and water storage roof. The parapet is used as enclosure, and the cornice ditch is used to collect rainwater.

D. Drainage outside the concealed pipe

The way of concealed rainwater pipes is to hide the rainwater pipes in false columns or hollow walls.

2) Internal drainage type

Refers to the rainwater drainage system with rainwater hopper on the roof and rainwater pipes inside the building. Internal drainage system can be divided into single bucket drainage system and multi-bucket drainage system, open internal drainage system and closed internal drainage system.

Question 2: What is organized drainage? Briefly describe its advantages and disadvantages and scope of application. Organized drainage refers to a drainage method that roof rainwater is led to the ground or underground drainage pipe network through drainage components such as gutter and rainwater pipe. Its advantage is that rain will not be blown to the wall by the wind, which can protect the wall. Disadvantages are complex structure and high cost. Organized drainage is generally used in multi-storey or high-rise buildings, which requires high drainage requirements and requires unified organization of drainage.

Question 3: What are the advantages and disadvantages of organized drainage? Its advantage is that it can prevent rain from splashing and getting wet at will, which will affect the beauty of the building. It is widely used, especially for roof drainage in cold areas and corrosive industrial buildings. The disadvantage is that the construction cost is increased, the structure is complex, and it is not easy to leak and repair.

Question 4: What are the components of organized roof drainage including unorganized drainage and organized drainage? Unorganized drainage is superior: simple structure and low cost. If rainwater flows directly from the eaves to the ground, the foot of the external wall will often be eroded by splashing rainwater, which will reduce the firmness and durability of the external wall. The rain dripping from the eaves may affect the traffic on the sidewalk. Organized drainage is excellent: rainwater does not flow directly from the cornice to the ground, and the feet of the external wall will not be eroded by splashing rainwater, which improves the firmness and durability of the external wall; The rain dripping from the eaves will not affect the traffic on sidewalks. Disadvantages: complex structure and high cost.

Question 5: What are unorganized drainage and organized drainage? What are their advantages, disadvantages and scope of application? Organized drainage: Roof rainwater flows into eaves gutter or gutter in a certain direction, then passes through the rainwater outlet and is discharged to the ground by rainwater bucket.

Unorganized drainage, also known as free falling water, refers to a drainage method in which roof rainwater directly falls to the ground from the cornice of the external wall.

Question 6: What are the types of flat roof drainage organizations? What are the advantages and disadvantages of each? Advantages and disadvantages of organized drainage and unorganized drainage: it is beneficial to protect the wall and ground and eliminate the impact of roof rainwater on the environment. The latter: the structure is simple and economical, but when it rains, it will splash up and pollute the wall and wash the ground!

Question 7: For roofs that need organized drainage, multi-storey buildings should adopt organized external drainage; Low-rise buildings and roofs with cornices less than 10m can adopt unorganized drainage.

Question 8: What are the types and characteristics of organized drainage on flat roofs?

Answer: The organized drainage of flat roof can be divided into inner gutter and outer gutter. People in Taiwan Province Province are external eaves gutter, and the downspout must be equipped with elbows to enter indoor water, which is probably due to "Feng Shui", so fat water does not flow out.

The specification of the downpipe outside the gutter in Chinese mainland is to allow water to fall into the bucket, and the water pipe is installed on the external wall. The overflow hole is set outside the outer gutter, which is lower than the roof. Even if the gutter drop is blocked by paper and sundries, the roof will not be flooded. The specification of inner gutter downspout does not allow water to directly fall into the bucket to prevent water from falling into the bucket and overflowing. Water pipes are installed on the inner wall. The outer wall is clean and tidy.

Question 9: What are the organized drainage methods shown in the picture? And summarizes the characteristics of each mode. Five points, huh? , his mama figure?