Re: [AFMUG] florida bridge - check your harness
AvE did a youtube video with his community's theory/analysis. The original plans for installation showed the temporary supports under the bridge in different locations vs where they were when it failed. Also, you can see one of the prestressing tendons sticking out of the collapsed structure with the tensioning cylinder still attached. AvE thinks someone got the math wrong when they changed the location of the supports during installation. When they put too much stress on that tendon, it stretched. Then, when sensors showed lower tension on that tendon, they tried to pull it tight again, causing it to snap. https://www.youtube.com/watch?v=KtiTm2dKLgU On Sun, Mar 25, 2018 at 4:15 PM, <ch...@wbmfg.com> wrote: > I am more interested in seeing what failed first. Obviously that first > section on the left. Does the top fail or that first diagonal brace on the > left fail first? > > *From:* Steve Jones > *Sent:* Sunday, March 25, 2018 6:36 AM > *To:* af@afmug.com > *Subject:* [AFMUG] florida bridge - check your harness > > http://video.dailymail.co.uk/preview/mol/2018/03/21/ > 5265478035737719932/636x382_MP4_5265478035737719932.mp4 > > watch the guy on top by the crane, hes tethered to it and his harness fails >
Re: [AFMUG] florida bridge - check your harness
I don't know, it looks to me like it was his lanyard that failed, not the harness... you can see it stretch out and then half go upwards, and half downwards. On Sun, Mar 25, 2018, 6:50 PM Steve Jones <thatoneguyst...@gmail.com> wrote: > Thats the best video ive found so far, if you look to the right it could > have been alot worse. Had traffic been still stopped for the left turn, > there was a school bus in the lane. > > They have said both that they were tensioning a cable and that they were > stress testing. Thats probably why the guy was tied off to a crane. Either > process is probably standard business, and thats why he didnt have his > harness front buckled, just making it look right for OSHA, since the > inspector wouldnt be able to come out on the bridge and see the actual > buckles. > > If the company takes those types of shortcuts, im guessing thats not the > only cut corner by them. > > On Sun, Mar 25, 2018, 5:45 PM Matt Hoppes < > mattli...@rivervalleyinternet.net> wrote: > >> Is there a better quality video? >> >> It’s hard to tell what may have failed. But that’s scary. >> >> On Mar 25, 2018, at 17:51, Mathew Howard <mhoward...@gmail.com> wrote: >> >> It's really hard to tell which part went first from that video... it's >> interesting that it failed right at the point where the crane is though. >> >> On Sun, Mar 25, 2018 at 4:15 PM, <ch...@wbmfg.com> wrote: >> >>> I am more interested in seeing what failed first. Obviously that first >>> section on the left. Does the top fail or that first diagonal brace on the >>> left fail first? >>> >>> *From:* Steve Jones >>> *Sent:* Sunday, March 25, 2018 6:36 AM >>> *To:* af@afmug.com >>> *Subject:* [AFMUG] florida bridge - check your harness >>> >>> >>> http://video.dailymail.co.uk/preview/mol/2018/03/21/5265478035737719932/636x382_MP4_5265478035737719932.mp4 >>> >>> watch the guy on top by the crane, hes tethered to it and his harness >>> fails >>> >> >>
Re: [AFMUG] florida bridge - check your harness
Gross. Why wear a harness at all if you aren’t going to go all the way? Either that or something from the bridge caught on him/it and pulled it down. > On Mar 25, 2018, at 19:50, Steve Jones <thatoneguyst...@gmail.com> wrote: > > Thats the best video ive found so far, if you look to the right it could have > been alot worse. Had traffic been still stopped for the left turn, there was > a school bus in the lane. > > They have said both that they were tensioning a cable and that they were > stress testing. Thats probably why the guy was tied off to a crane. Either > process is probably standard business, and thats why he didnt have his > harness front buckled, just making it look right for OSHA, since the > inspector wouldnt be able to come out on the bridge and see the actual > buckles. > > If the company takes those types of shortcuts, im guessing thats not the only > cut corner by them. > >> On Sun, Mar 25, 2018, 5:45 PM Matt Hoppes >> <mattli...@rivervalleyinternet.net> wrote: >> Is there a better quality video? >> >> It’s hard to tell what may have failed. But that’s scary. >> >>> On Mar 25, 2018, at 17:51, Mathew Howard <mhoward...@gmail.com> wrote: >>> >>> It's really hard to tell which part went first from that video... it's >>> interesting that it failed right at the point where the crane is though. >>> >>>> On Sun, Mar 25, 2018 at 4:15 PM, <ch...@wbmfg.com> wrote: >>>> I am more interested in seeing what failed first. Obviously that first >>>> section on the left. Does the top fail or that first diagonal brace on >>>> the left fail first? >>>> >>>> From: Steve Jones >>>> Sent: Sunday, March 25, 2018 6:36 AM >>>> To: af@afmug.com >>>> Subject: [AFMUG] florida bridge - check your harness >>>> >>>> http://video.dailymail.co.uk/preview/mol/2018/03/21/5265478035737719932/636x382_MP4_5265478035737719932.mp4 >>>> >>>> watch the guy on top by the crane, hes tethered to it and his harness fails >>>
Re: [AFMUG] florida bridge - check your harness
Thats the best video ive found so far, if you look to the right it could have been alot worse. Had traffic been still stopped for the left turn, there was a school bus in the lane. They have said both that they were tensioning a cable and that they were stress testing. Thats probably why the guy was tied off to a crane. Either process is probably standard business, and thats why he didnt have his harness front buckled, just making it look right for OSHA, since the inspector wouldnt be able to come out on the bridge and see the actual buckles. If the company takes those types of shortcuts, im guessing thats not the only cut corner by them. On Sun, Mar 25, 2018, 5:45 PM Matt Hoppes <mattli...@rivervalleyinternet.net> wrote: > Is there a better quality video? > > It’s hard to tell what may have failed. But that’s scary. > > On Mar 25, 2018, at 17:51, Mathew Howard <mhoward...@gmail.com> wrote: > > It's really hard to tell which part went first from that video... it's > interesting that it failed right at the point where the crane is though. > > On Sun, Mar 25, 2018 at 4:15 PM, <ch...@wbmfg.com> wrote: > >> I am more interested in seeing what failed first. Obviously that first >> section on the left. Does the top fail or that first diagonal brace on the >> left fail first? >> >> *From:* Steve Jones >> *Sent:* Sunday, March 25, 2018 6:36 AM >> *To:* af@afmug.com >> *Subject:* [AFMUG] florida bridge - check your harness >> >> >> http://video.dailymail.co.uk/preview/mol/2018/03/21/5265478035737719932/636x382_MP4_5265478035737719932.mp4 >> >> watch the guy on top by the crane, hes tethered to it and his harness >> fails >> > >
Re: [AFMUG] florida bridge - check your harness
Is there a better quality video? It’s hard to tell what may have failed. But that’s scary. > On Mar 25, 2018, at 17:51, Mathew Howard <mhoward...@gmail.com> wrote: > > It's really hard to tell which part went first from that video... it's > interesting that it failed right at the point where the crane is though. > >> On Sun, Mar 25, 2018 at 4:15 PM, <ch...@wbmfg.com> wrote: >> I am more interested in seeing what failed first. Obviously that first >> section on the left. Does the top fail or that first diagonal brace on the >> left fail first? >> >> From: Steve Jones >> Sent: Sunday, March 25, 2018 6:36 AM >> To: af@afmug.com >> Subject: [AFMUG] florida bridge - check your harness >> >> http://video.dailymail.co.uk/preview/mol/2018/03/21/5265478035737719932/636x382_MP4_5265478035737719932.mp4 >> >> watch the guy on top by the crane, hes tethered to it and his harness fails >
Re: [AFMUG] florida bridge - check your harness
It's really hard to tell which part went first from that video... it's interesting that it failed right at the point where the crane is though. On Sun, Mar 25, 2018 at 4:15 PM, <ch...@wbmfg.com> wrote: > I am more interested in seeing what failed first. Obviously that first > section on the left. Does the top fail or that first diagonal brace on the > left fail first? > > *From:* Steve Jones > *Sent:* Sunday, March 25, 2018 6:36 AM > *To:* af@afmug.com > *Subject:* [AFMUG] florida bridge - check your harness > > http://video.dailymail.co.uk/preview/mol/2018/03/21/ > 5265478035737719932/636x382_MP4_5265478035737719932.mp4 > > watch the guy on top by the crane, hes tethered to it and his harness fails >
Re: [AFMUG] florida bridge - check your harness
I am more interested in seeing what failed first. Obviously that first section on the left. Does the top fail or that first diagonal brace on the left fail first? From: Steve Jones Sent: Sunday, March 25, 2018 6:36 AM To: af@afmug.com Subject: [AFMUG] florida bridge - check your harness http://video.dailymail.co.uk/preview/mol/2018/03/21/5265478035737719932/636x382_MP4_5265478035737719932.mp4 watch the guy on top by the crane, hes tethered to it and his harness fails
[AFMUG] florida bridge - check your harness
http://video.dailymail.co.uk/preview/mol/2018/03/21/5265478035737719932/636x382_MP4_5265478035737719932.mp4 watch the guy on top by the crane, hes tethered to it and his harness fails
