tag:blogger.com,1999:blog-391026052555134300.post1480830937745721131..comments2024-03-28T21:43:23.410-05:00Comments on Scratching to Escape: Building a Bridge - Engineering Part 2Jesshttp://www.blogger.com/profile/15969361446367636746noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-391026052555134300.post-31385113027596989222022-01-12T14:42:25.741-06:002022-01-12T14:42:25.741-06:00From what I read, that's the only bridge cross...From what I read, that's the only bridge crossing the Yukon in Alaska. Jesshttps://www.blogger.com/profile/15969361446367636746noreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-65868327720744572882022-01-12T13:46:25.254-06:002022-01-12T13:46:25.254-06:00They had a television show about the bridge. The p...They had a television show about the bridge. The problem is still being debated, but the single beams, instead of a truss, were suspected of catching the wind, causing the structural resonance to match the wind, and causing the deck to fail.Jesshttps://www.blogger.com/profile/15969361446367636746noreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-59064504333570262482022-01-12T09:07:23.108-06:002022-01-12T09:07:23.108-06:00I moved in '99. It was a mad house then. I d...I moved in '99. It was a mad house then. I don't miss it at all.<br /><br />I used to go to gun shop / shooting range down 288, just south of the beltway. Last time I was down that way, I didn't recognize the area it was so built up. <br /><br />Time waits for no man.....STxARhttps://www.blogger.com/profile/04588850178293194825noreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-57139363227728612682022-01-11T21:52:52.624-06:002022-01-11T21:52:52.624-06:00My favorite is still the bridge over the Yukon on ...My favorite is still the bridge over the Yukon on the Haul Road.John Wilderhttp://wilderwealthywise.comnoreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-51556748330256621642022-01-11T14:19:07.878-06:002022-01-11T14:19:07.878-06:00That was "Galloping Gerty", the Tacoma N...That was "Galloping Gerty", the Tacoma Narrows bridge. The bridge was opened in July 1940, but collapsed just four months later in November 1940. <br /><br />Search for "Galloping Gerty" or "Tacoma Narrows bridge" on YouTube and you will find the newsreel of the collapse.Royhttps://www.blogger.com/profile/10108430731483801350noreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-64041041948708761472022-01-11T13:31:02.666-06:002022-01-11T13:31:02.666-06:00Very informative post.
I saw a video of a suspensi...Very informative post.<br />I saw a video of a suspension bridge built many years ago (30s-40s?) that with a crosswind, the surface literally moved up and down like a flat ribbon in the wind. they called "resonant frequency" the cause. Needless to say, the bridge was eventually either torn down, or collapsed.<br />A very different science for most of us. <br />Nicely done.extexanwannabehttp://extexanwannabee.wordpress.comnoreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-76054985408641753162022-01-11T08:56:37.159-06:002022-01-11T08:56:37.159-06:00Super blogSuper blogRajani Rehanahttps://www.blogger.com/profile/17439571117569471650noreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-14035413744443546112022-01-11T08:42:34.839-06:002022-01-11T08:42:34.839-06:00I try to avoid driving in Houston, unless I have a...I try to avoid driving in Houston, unless I have a lot of time to deal with traffic, or it's during the late hours, when the freeways perform as designed. <br /><br />I don't know how TxDot engineers can keep up with the large volumes of traffic. It's only been around 40 years when I worked on a project to build an exit ramp from IH-10 to Hwy 6, when it was in the rural outskirts between Houston and Katy. Now, the two cities have basically merged, and the interchange between the two highways is full of flyovers. What was once open fields with cattle is now a typical large urban area full of homes, apartments, strip malls and multi-story buildings.Jesshttps://www.blogger.com/profile/15969361446367636746noreply@blogger.comtag:blogger.com,1999:blog-391026052555134300.post-60650347185791558732022-01-10T11:43:27.857-06:002022-01-10T11:43:27.857-06:00I never understood why bridges would lope like th...I never understood why bridges would lope like that. Now I do. Thank you. That bridge west of New Orleans wore on my nerves after just a few minutes. Now I know why. Either there was a change in elevations, deflection didn't work out, or some mix of the two. Very cool.<br /><br />And your view of TexDOT engineers is pretty neat. I knew one in Houston. I asked why the horrible interchange at 59 and 610 was designed like that. He said it was old, and the traffic had outstripped the design. That was in the early 90's when it was still merge or die at 610 S and Richmond, and the mix master to exit 59 S and entrance from 59 to 610 S. <br /><br />That meat grinder is why I finally made the move to central Texas. I about lost my mind twice a day there.STxARhttps://www.blogger.com/profile/04588850178293194825noreply@blogger.com