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With the rapid development of economy, ventilation duct is more and more widely used in life. For example, in restaurants, ventilation equipment provides customers with an excellent dining environment and makes people eat happily in restaurants. For example, mining in industrial production requires excellent ventilation conditions to ensure the respiratory health of miners. Ventilation equipment has been paid more and more attention. The planning and installation of ventilation duct is one of the important parts of ventilation equipment. Let's take a look at some points that should be paid attention to in ventilation duct planning.

1、首要依據某系統某樓層的通風管道繪制，并注明接口方位。

1. It is mainly drawn according to the ventilation duct of a certain system and a certain floor, and the interface orientation is indicated.

2、 通風管道規劃應從起點開端編號。起點一般為接口方位，相同截面規范、相同長度截面編號相同。此外，應按次第編號。便于安排生產建設。

2. Ventilation duct planning shall be numbered from the starting point. The starting point is generally the interface orientation, with the same section specification, the same length and the same section number. In addition, it shall be numbered in order. It is convenient to arrange production and construction.

3、 通風管道規劃時應標明支吊架的方位，支吊架的方位距離和材料規范應符合后期規范和工藝規程的要求。

3. The orientation of supports and hangers shall be indicated during ventilation pipe planning, and the orientation distance and material specification of supports and hangers shall meet the requirements of later specifications and process specifications.

4、 在規劃通風管道時，首要要考慮彎頭和異徑管，以滿意表里外表同心彎頭和異徑管長度的要求。

4. When planning ventilation pipes, elbows and reducers should be considered first to meet the requirements of the length of concentric elbows and reducers on the inside and outside.

5、 應標明管徑規劃方位、彎頭方位及管底標高。

5. The pipe diameter planning orientation, elbow orientation and pipe bottom elevation shall be indicated.