03-27-2013 at 09:42 AM
Category: Uncategorized
The bolts, ranging from 9 to 17 feet in length, are located near where the new span’s self-anchored suspension span meets its skyway.There are 288 anchoring bolts that tie the road decks down to a supporting pier below, and 32 have popped out a couple of inches since they were tightened during installation.
Over the course of the past few month, the batch of bolts, which were manufactured in 2008, have failed to tighten properly due to excessive hydrogen in the steel, which causes embrittlement. (…)
via Thirty-two large bolts on the new eastern span of the Bay Bridge have been discovered to be faulty.