NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: SF Bay Bridge
From: Lu Abel
Date: 2013 Apr 3, 15:21 -0700
From: Lu Abel
Date: 2013 Apr 3, 15:21 -0700
Yeah... I wonder if they did any testing on the bolts before they installed them. The news reports say that Dyson had delivered other below-spec parts to the bridge earlier. No specifics on what, though.
It's sad that the surviving parts of the US steel industry seems to be focused on specialty steels (and I assume these were some sort of high-tensile strength bolts), yet we got this situation.
Oh, well, as one of the Apollo astronauts allegedly said when asked what he feared most about his space missions "that everything I'm trusting my life to has been built by the low bidder."
It's sad that the surviving parts of the US steel industry seems to be focused on specialty steels (and I assume these were some sort of high-tensile strength bolts), yet we got this situation.
Oh, well, as one of the Apollo astronauts allegedly said when asked what he feared most about his space missions "that everything I'm trusting my life to has been built by the low bidder."
From: Norm Goldblatt <ngold@pacbell.net>
To: luabel@ymail.com
Sent: Wednesday, April 3, 2013 2:55 PM
Subject: [NavList] Re: SF Bay Bridge
Hi, Lu. I can find the photos, but they were just googled and copied from various news items. I lucked on two shots, one a closeup of one of the clusters with measurable bolt diameters, and another showing same cluster from farther away, but with a human figure. The rest is math. I got 3.5 inches, the paper said anything from 'the size of a man's thigh' to 3 inches. I drew them as 3 inches.Of course, the 'punchline' is that although most of the steel in the bridge came from China, these bolts were made right here in good ole' USA by the Dyson Company in Ohio.
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