Or skip the locks and fill the manholes with sand. Then provide the service folks those big suction trucks to remove the sand for servicing :) On Mon, Apr 13, 2009 at 12:28 PM, Andy Ringsmuth <andyring@inebraska.com>wrote:
On Apr 13, 2009, at 11:12 AM, Mikael Abrahamsson wrote:
Manhole locks are just going to stop vandalism, and I think the threat
to obstruction calculation just doesn't add up for that small level of isolated cases.
It doesn't stop it, it just makes it slightly harder, and they'll go after another point.
IMHO, I think manhole locks would only serve to HEIGHTEN the threat, not minimize it. Flag this under the whole "obscurity" category, but think about this - if you're a vandal itching to do something stupid, and you see a bunch of manhole covers and a couple of them have locks on them, which ones are you going to target? The ones with the locks, of course. Why? Because by the very existence of the locks, it implies there's something of considerable value beyond the lock.
-Andy