What is the unit of measurement for calculating pipeline engineering quantity specified in the quota?

What is the unit of measurement for calculating pipeline quantities specified in the quota? It is introduced as follows:

The laying methods, locations, materials and specifications of various pipelines are different, and the unit of measurement is "linear meter", without deducting the length of junction box (box), lamp holder box and switch box in the middle of the pipeline.

In building engineering, pipeline engineering is an important link, which involves water supply and drainage, heating, ventilation, air conditioning and many other aspects. In order to ensure the engineering quality and control the cost, this quota specifies the unit of measurement for calculating the quantity of pipeline engineering.

According to the Code for Valuation with Bill of Quantities of Construction Projects (GB 50500-20 13), the units of measurement for calculating pipeline quantities mainly include:

1. meter (m): This is a common unit for calculating pipeline length. For example, the length of water supply and drainage pipeline and the length of cable tray can be measured in meters.

2. Root (gēn): This is a common unit for calculating the number of pipes. For example, various types of steel pipes, PVC pipes, copper pipes and so on. Can use the root as the unit of measurement.

3. Square meters (m? ): This is a common unit for calculating the area of pipe supports, hangers, wall bushings and other accessories. For example, the area of pipe support and wall bushing can be measured in square meters.

4. Parts (gè): This is a common unit for calculating the number of pipe accessories such as valves, flanges, elbows and tees. For example, various types of valves, flanges, elbows, tees, etc. Can be used as a unit of measurement.

5. Ton (t): This is a common unit for calculating the weight of pipeline materials. The weight of metal materials such as steel pipes and cast iron pipes can be measured in tons.

In practical engineering, according to different engineering contents and construction requirements, it is also necessary to select appropriate measurement units in combination with specific conditions. For example, for some pipes with special shapes, such as bends and spiral pipes, other more suitable measurement units may be needed. In addition, we need to pay attention to the conversion relationship between different units of measurement to ensure the accuracy of engineering quantities.