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 <andyr...@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 > >