排污渠圖則英文簡寫 M/L

排污渠圖則英文簡寫 M/L 代表甚麼,例如：
Cast iron waste pipe/soil pipe from above & to below & turn at 1/F M/L？
M/L是Medium OR Large。

參看以下例子:(http://www.dft.gov.uk/ha/standards/mchw/vol5/sect9/v5_s9_p5.pdf)
Page 17: Codes Relating to the Operation of the Pipeline.
Adjacent pipes are displaced from their intended position in relation to each other....
Code: OJ(M/L) Description: Open Joint (Medium OR Large)
Code: JD(M/L) Description: Joint Displaced (Medium OR Large)

The relevant band (M/L) should also be correctly identified in the coding sheet. The band categories are as follows:
M(Medium): Between 1.0 and 1.5 times thickness of pipe

L(Large): > 1.5 times thickness of pipe)

2011-10-23 19:17:18 補充：
那座大厦一樓頂四面是大平台，如果真的有Mezzanine Level, M/L應該很大可能是 Mezzanine Level了。

2011-10-23 19:28:29 補充：
但Cast iron waste pipe/soil pipe .. "turn at 1/F M/L(在1字樓,閣樓轉彎)"- 究竟是在1字樓還是閣樓轉彎呢？又似乎不清楚。

2011-10-24 05:05:19 補充：
如果Cast iron waste pipe/soil pipe from above & to below & turn at 1/F M/L 意思是"-鑄鐵排污渠管由上面到下面，在1字樓閣層轉彎",你所說在二樓平台與一樓之間建了一個暗閣樓去收藏渠管是有可能的。

M/L = Medium Level (below window sill)
H/L = High Level (above window head)

因平面圖不能顯示橫管的的平水, 故用文字說明.

2011-10-24 08:31:40 補充：
Mezz Floor is usually abbreviated as M/F, not M/L.
I can't guess from what you said. Need a site visit with the drawing available.

-------Municipal Latrine---------