Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: SF Bay Bridge
    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." 



    From: Norm Goldblatt <ngold---.net>
    To: luabel{at}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.
    ----------------------------------------------------------------
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com
    ----------------------------------------------------------------
    View and reply to this message: http://fer3.com/arc/m2.aspx?i=123296


       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site