Скачать с ютуб The Big Dig Ceiling Collapse: An Epoxy that took down a Tunnel Ceiling в хорошем качестве

The Big Dig Ceiling Collapse: An Epoxy that took down a Tunnel Ceiling

On the 10 of July 2006 the ceiling of the big dig tunnel collapses. This was 9 years after the fort point channel opened to traffic. So what was the cause of this collapse of the ceiling of the tunnel on the I90 in Boston? I will cover the history around the constitution of the big dig tunnel and what the NTSB uncovered in their investigation into this tragedy. You will find out the causes behind why the ceiling of the fort point tunnel collapsed, what decision led up to the tragedy, and was there warning signs prior to the collapse of the ceiling on the big dig tunnel. It is important that all engineering understand both the structural mechanics behind the failure, but also understand the decision the led up to the tragedy and how human physiology can play a role in an engineering disaster. The true cause of the big dig ceiling collapse in epoxy with the same name that had two versions, a fast set and a standard set. These epoxies produced by Power Fasteners had performed similar in a short term loading situation but had drastically different properties under a sustained load. One of these epoxies suffers from an issue known as Epoxy Creep, which means over time under a sustained load the epoxy will stretch and weaken to an eventual point of failure. What to watch next How did a Maimi building collapse    • How did a Miami building collapse: Th...   Engineering Reality Vs Expectation    • Engineering Expectation vs Reality - ...   Day in the Life of A structural engineer    • A day in the life of a structural eng...   Citicorp Center a near-miss    • How The Citicorp Center was saved by ...   Hyatt Regency walkway collapse    • The Hyatt Regency walkway collapse: A...   💡 My name is Brendan and I am a structural engineer with over 15 years of experience based in Australia. I have a wide variety of projects from very small to some of the biggest in the southern hemisphere. I have a passion for good structural design and teaching/mentoring. This channel is to share my passion for engineering and provide entertaining short clips on: - tips for young engineers on progressing their careers - anyone needing a refresher on any design element - design approaches - Review past engineering failures to improve structural knowledge 💡 📧LinkedIn Profile:   / brendan-hasty-48a40a3b   👍Support the channel on Patreon:   / brendanhasty   or Donate Directly via Paypal https://paypal.me/BHEngineering 🔴 Disclaimer: Some of the below links are affiliate links as an Amazon Associate and other affiliate programs I'll earn a small commission from qualifying purchases at no additional cost to you. 🔴 📚Recommended Books for engineering Communication Try Audible Premium Plus for free https://amzn.to/36B4pm0 up to 2 free books https://kit.co/Brendan_hasty/recommen... Concrete Structures Warner https://geni.us/ConStruct Steel Designers' Handbook https://geni.us/SteelHand Soft is the new Hard https://geni.us/SoftHard Also on Audible How to Win Friends & Influence People https://geni.us/WinFriend Also on Audible Never Split the Difference: https://geni.us/SplitDiff Also on Audible The Subtle Art of Not Giving a https://geni.us/SubtleArtNF Also on Audible Books on Structures For anyone who wonder about the engineering behind building design bringing back the fun to engineering. Why Buildings Fall Down: How Structures Fail https://geni.us/WBFD Structures: Or Why Things Don't Fall Down https://geni.us/WBDFD 🎥home office https://kit.co/Brendan_hasty/engineer... MX Master 3 https://geni.us/MXmo Logitech K580 White https://geni.us/LogiK580 Samsung 32 Curved https://geni.us/rAIO Philips 32 4k https://geni.us/32Phillips Zbook Dock https://geni.us/ZDock Zbook https://geni.us/Zbook 🎥Gear and Video Editing https://kit.co/Brendan_hasty/youtube-... Rode VideoMic Pro+ Microphone https://geni.us/RVMP Neewer 660 LED Video Light https://geni.us/N660 Neewer 480 RGB Led Light https://geni.us/N480 Sony A7 SIII https://geni.us/2X1kwK camera Samsung S20 https://geni.us/SS20 🎥Video Editing AMD Ryzen 9 3900X https://geni.us/HVrKeZz MSI Meg X570 https://geni.us/kwY70ua RTX 2080 Super Gaming windforce https://geni.us/O1AC Samsung 970 PRO 1TB https://geni.us/SPR70 Fractal Design Define 7 https://geni.us/FD7B 🎥SEO tool Tubebuddy https://www.tubebuddy.com/BHEngineering Chapter 00:00 Intro 00:50 Main Structural Elements in a Tunnel 01:43 Type of Post fixed anchors 03:24 Structural issues during construction 05:39 The Investigation 07:05 The Remaining Ceiling 07:27 Was installation at fault 08:27 What is Epoxy Creep 10:17 What did Power Fasteners Know 11:10 NTSB's Conclusions 11:27 Additional findings