Stolen Rack (and bike?)

Photo by Jan who adds "I sometimes commute to the Tenleytown metro. Sometime between 5pm last night and 7:30 am today someone unscrewed one of the metro bike posts and likely stole a bike (thankfully not mine). These posts appear to use normal threaded bolts, so it's quite easy to unscrew them."

Comments

[antibozo]

As I've seen pictures of these being installed lately, I've been wondering if they had such a vulnerability. Give the installers a stupid award.

[Bryon]

Typical installation of bike racks is with anchor bolts. The problem is that concrete is weak and the bike rack can be shaken back and forth, such that the anchor bolts grind away at the pilot hole in the concrete, opening it up for easy removal.
Here’s a better method: drill a hole into the concrete that is larger than the bolt, fill it with concrete epoxy, insert the bolt upside-down, then put rack over the bolt, and screw down the nut. Once the epoxy hardens, the final step is to take a hammer and screw-driver and bash down the exposed bolt threads so the nut can’t be unscrewed. This ensures a bike rack that is much much harder to extricate.
Of course, to really do it right, you bust out the concrete and re-pour it with the rack feet submerged.