Question 1

What is the service life of polymer concrete drainage channel?

Accepted Answer

Strictly speaking, the service life of a drainage channel is affected by many factors, such as whether the pavement is completed according to the construction process proposed by the manufacturer, the complexity of the fluid, whether there is a strong acid-base liquid of sulfuric acid, and whether the weight of the vehicle passing by the surface Exceeding the design load of the trench body and so on. If it is within the control range, the service life of polymer concrete drainage channel is more than 20-50 years. In foreign countries, as a century-old urban underground waterway, polymer concrete products are widely used.

Question 2

Why do ordinary drains need to be cleaned frequently?

Accepted Answer

Ordinary drainage channel is made of concrete, the channel body is not smooth enough, there is friction, and it is easy to trap garbage, so it needs to be cleaned frequently. Especially before the flood season comes, it takes a lot of manpower and material resources to clean it to ensure that the normal drainage is not blocked during the flood season. Now the new type of drainage channel is a integrated finished linear drainage channel, the main material is polymer concrete, instead of the traditional concrete channel. With U-shaped cross section, the channel is smooth.It is difficult for garbage to stay, and it is not easy to be blocked. There are inspection openings every 10-20 meters for easy cleaning.

Question 3

What are the basic classification and structure types of drainage channel？

Accepted Answer

There are basically two types of drainage channel: the first is a sunchannel: a sunchannel, also known as a "open channel", is a drainage channel that exposes the ground. The second type is hidden channel: concealed channel (also called blind channel), used in some venues that require good drainage, such as the high groundwater level of the gymnasium, which can affect plant growth. Blind channel can be used.

The channel body is generally "U", "V" type, made of polymer concrete, and the cover has a grid one, a slot one, etc., and the material is mostly stainless steel. It is the second-generation drainage channel.

U-shaped drainage channel

The structure of drainage channel is divided into type A drainage channel, type B drainage channel and trapezoidal drainage channel. Type A and Type B are rectangular, but the size is different, trapezoid is trapezoidal shape. Specific specifications refer to the construction drawings.

Rectangular drainage channel: advantages, the width of the top excavation is small, and the depth can be controlled at will.

Disadvantages, the structure is unstable, it is easy to collapse and block the channel, and the maintenance frequency is high.

Trapezoidal drainage channel: advantages, stable structure, no need for frequent maintenance after completion.

Disadvantages: wide excavation area and large amount of engineering earthwork. The depth is proportional to the width of the excavation surface.

Question 4

How is the price of polymer concrete drainage cahhenl and grating cover calculated?

Accepted Answer

The price of the polymer concrete drainage channel is calculated according to the size of the cover and the channel, and then multiplied by the corresponding number of meters.The cover corresponding to the polymer concrete drainage channel includes stainless steel stretch stamping cover, stainless steel slot cover, grid grating. heavy-duty cover, resin cover and ductile iron grating cover. Different covers have different prices. If you want calculate price for galvanized steel cover of drainage channel, you need to know the span of the polymer concrete drainage channel. What is the required load? Is there any cover reserved? What's the width th of small gap? So that we can recommend an economical drainage channel cover.

Question 5

Does the finished drainage ditch have a slope, and how is the drainage slope calculated?

Accepted Answer

Recently, some customers will inquire about whether the finished drainage ditch has a slope. The editor can tell you that the finished drainage ditch itself has no slope, but you can make a slope according to the terrain and ground, or you can change the construction method to superimpose the installation to make the slope, here We can share with you how the drainage slope is calculated. The basic overview of the slope calculation formula is as follows:

Slope: Usually the ratio of the vertical height h of the slope to the horizontal width l is called the slope (or slope ratio) and is represented by the letter i. It is usually expressed as a percentage. That is: i=h/l×100%. In fact, the slope is simply the tan value.

Drainage slope calculation formula: slope = (elevation difference/horizontal distance) x100%, when expressed as a percentage, that is: i=h/l×100%.

For example, a slope of 3% means that for every 100 meters of horizontal distance, the vertical direction rises (drops) 3 meters; 1% means that for every 100 meters of horizontal distance, the vertical direction rises (falls) 1 meter.

Question 6

Which drainage performance is better, linear drainage ditch or point gutter?

Accepted Answer

1. The ground is uneven due to the need to find slopes on all sides, and the surface is wavy and funnel-shaped;

2. Slope design and construction are more complicated;

3. Because the pipeline needs to be buried to a certain depth, the amount of construction excavation is relatively large;

4. Poor drainage will cause a greater risk of water ponding on the ground;

5. The pipeline is easy to block and cause system failure;

6. The maintenance cost of the piping system is relatively high;

7. It may conflict with other buried pipeline systems.

The characteristics of linear drainage ditch can solve these problems well.

1. The linear drainage ditch is made of polymer concrete, which has the characteristics of light weight, anti-aging, anti-freezing, anti-corrosion, strong bearing capacity, smooth surface and zero permeability.

2. The unique design of the "V" and "U" shape can effectively increase the drainage capacity and enhance the self-cleaning function.

3.It gives a very intuitive linear look and feel, concise and unified.

4. Linear and continuous water interception, with extremely high drainage efficiency.

5.Convenient installation and maintenance, shallow trenching depth for construction.

6. Simple slope finding and easy construction. Fast installation and construction can ensure the construction period.

7. It can effectively reduce buried pipelines and reduce construction volume. The linear drainage cover and the ground are very easy to clean with only normal maintenance.

What is the service life of polymer concrete drainage channel?

Why do ordinary drains need to be cleaned frequently?

What are the basic classification and structure types of drainage channel？

How is the price of polymer concrete drainage cahhenl and grating cover calculated?

Does the finished drainage ditch have a slope, and how is the drainage slope calculated?

Which drainage performance is better, linear drainage ditch or point gutter?

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