Question

[vic mcclymont]

Sorry its not MN related, didn't know where to post.

Nottingham is going through a major upheaval due to the works associated with the new tram installation.
Majority of the works on one side have a corrugated steel panels with a pipe running along the top.
About every 18" on the pipe there is an orifice which continually discharges a vapour along the length of the workings.
Any idea what the vapour does?
Vic

[robpage]

The tram works also coincides with new sewer and new cables , from the utility companies , I am assuming the corrugated sheets go in to the trench for these to prevent trench collapse . I have no idea what the vapour is , except if the pipe is about an inch to two inch diameter , they may be running an air pipe from a centralised compressor top keep the noise down , and as such may have automatic drains every few feet of length

[vic mcclymont]

Rob, fences to stop people gaining access, from the adjacent sports grounds. pipe isn't very big in diameter.

[John Pruden]

it could be the heat from sewers condensing in cold air?jp

[robpage]

So security fencing , I would still go on the air pipe , but the vents are to frequent , send a pic

[vic mcclymont]

If I can, I will, can only see from a bus, no stopping allowed.