燃氣標志樁20米一個。現在天然氣正在普及，有利就有弊，天然氣也是一種危險的氣體，在安裝的過程中施工隊一定要小心再小心。為了避免其它施工方在進行現場施工的時候不造成危險，所以在安裝燃氣管道的上方間隔20米安裝一根燃氣標志樁，以起到警示作用。

　　Each gas marker post is 20 meters long. Nowadays, natural gas is becoming popular, and there are advantages and disadvantages. Natural gas is also a dangerous gas, and the construction team must be careful during the installation process. In order to prevent other construction parties from causing danger during on-site construction, a gas marker post is installed every 20 meters above the installation of the gas pipeline to serve as a warning.

　　注意事項

　　matters needing attention

　　燃氣標志樁在設置時，有兩種情況，一種是上方可以安裝，采取在管道的正上方安裝，一種是當管道正上方沒有安裝條件，但必須安裝時，可設置在相對距離較近的路邊綠化帶內，但要在燃氣標志樁上設置管道走向簡圖，指明管道的具體位置，燃氣標志樁的安裝間距要求以便于觀察為原則，考慮到經濟性和實用性。

　　When setting up gas marker piles, there are two situations: one is that they can be installed above the pipeline and should be installed directly above it; the other is that when there are no installation conditions above the pipeline but installation is necessary, they can be set up in a relatively close roadside green belt. However, a schematic diagram of the pipeline direction should be set up on the gas marker pile, indicating the specific location of the pipeline. The installation spacing of gas marker piles should be based on the principle of easy observation, considering economy and practicality.
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