Pipeline construction cost

[Лена CCT]

В таблице базовых расценок на прокладку трубопроводов указана единица измерения, которую я никак не могу понять. Помгите перетолмачевать это: $/in/m

Образец (контекста практически никакого):

Description --- Rate --- Unit
Offshore raw gas line --- 100.0 --- $/in/m

Всем заранее большое спасибо

[алешаBG]

$/in/m =$ per inch-mile

[Лена CCT]

Pardon, but that doesn't make sence either. Could you expand on this, please? Would it be sort of "inch-o-mile" or "inch or mile"?

Thanks

[алешаBG]

For example, concentrated regional growth in high or low cost areas in a particular year can distort the trend while factors such as pipeline diameter have little effect on the cost when expressed in cost per inch-mile installed.
www.rwbeck.com/market/energy/ oil_gas/O-GBulletin-Pipeline_Cap_Cost.pdf -

[алешаBG]

еще ссылка, ето устойчиво оказывается
Infiltration is the average daily flow of the three wettest consecutive months minus the expected flow. Expected flow is based on water billing records minus a consumptive loss of 10 to 15 percent. Infiltration greater than 3000 gallons per day per inch-mile (gpdim) of pipe is considered excessive.

http://64.233.183.104/search?q=cache:xg4gufP-A8wJ:www.nccgl.net/fap/cwsrf/201gui.html+per+inch-mile&hl=ru&ct=clnk&cd=10&lr=lang_bg|lang_en

[Лена CCT]

Thanks a lot