On 11/13/13 11:51 PM, Roy Hockett wrote:
I am guessing due to esthetics the below ground vault was selected, we just learned of this selection and thus my query to this group to find other that have dealt with similar situations and if so, experience base recommendations, and things to be aware of.
Thanks, -Roy Hockett
Network Architect, ITS Communications Systems and Data Centers University of Michigan Tel: (734) 763-7325 Fax: (734) 615-1727 email: royboy@umich.edu
I remember seeing a below grade vault here in Michigan once. It was purpose built (years ago for MCI IIRC), but I don't know by whom. Heavy steel plate door on top, looked like those on major water pipe vaults. Likely built to similar civil engineering standards. But this was fairly early in the history of laying fiber, so there are probably newer standards. Off the top of my head, it had a lot of things concerned with water and humidity -- dual redundant sump pumps, dual heaters mounted 6' off the floor, an environmental monitoring panel, an exterior antennae pole for out-of-band reporting from the monitoring panel. I didn't have the opportunity to open the fairly beefy looking power panel, so I don't know whether there was a dual feed -- but it wouldn't surprise me. As to cleanliness, it wasn't particularly clean, but not really dirty. (Much like any exterior shopping center access demark, assuming you've seen those.) I also saw a Bell South below grade fiber vault once, but wouldn't recommend it, as it was full of water at the time.... To be fair, I'm not sure they had a cross-connect panel in there.