×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Glass bottomed bridge failure
4

Glass bottomed bridge failure

RE: Glass bottomed bridge failure

When I used to rockclimb, we had an expression, "Holding on with your hands, feet and teeth." Seems appropriate... I cannot tell how much glazing remains; it could be pretty lethal debris.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

RE: Glass bottomed bridge failure

I'm reminded of visiting the Royal Gorge bridge in the past. Looking down the length of the bridge, in "normal" winds, it looked like it was gently moving up and down perhaps a foot. Not really too perceptible when you were on it.
Then I was talking to an older lady in the area, and she mentioned that she had been there when it was moving enough that you couldn't see cars at the other end- and they had added stiffening cables since then.
So it would seem there is a learning curve on these things.

RE: Glass bottomed bridge failure

Sounds like a laundry problem to me.

RE: Glass bottomed bridge failure

One would think that using a rigid material like glass is not appropriate for a structure that will bend in the wind.

RE: Glass bottomed bridge failure

Sometime in the past we decided to upgrade the flood lights on our tugboats to modern LED units. I had one key feature that I wanted to see on my lights and that was glass lenses. Polycarbonate lenses yellow over time and if I am paying a premium for LED light fixtures I need the fixture to last. I contacted the manufacturers and grilled them about why they run polycarbonate and every single one responded that they tried glass and the glass broke. Every single one of these manufacturers was using bolted flanges with o-rings to secure the glass panel. The thermal expansion of the aluminum fixture was breaking the panels. I finally found one manufacturer that simply beds their glass lens with silicone, no bolts. We've never had to replace a fixture, and now I have other tugboat operators reaching out to find out what our secret is

I see no difference here between glass decks on the bridge and glass windows on a high-rise building. The glass simply needs to be isolated from the movement of the structure. I guess the consequences are a little bit more severe if the glass deck does break, though.

RE: Glass bottomed bridge failure

Quote (a rigid material like glass is not appropriate for a structure that will bend in the wind.)


That's why we no longer do glazed, curtain wall buildings... the devil's in the details...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

RE: Glass bottomed bridge failure

dik, who is "we"? You may not do glazed curtain walls, but a lot of them are being built.

RE: Glass bottomed bridge failure

was being sarcastic, hokie...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

RE: Glass bottomed bridge failure

I now know how to say "shut up woman I don't care we are going to be late visiting your mother" in Chinese

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close