Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Classifieds
Media
New media
New comments
Search media
Log in
Register
What's New?
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More Options
Advertise with us
Contact Us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
The Water Cooler
General Discussion
So We Are Thinking About Raising Speed Limits...
Search titles only
By:
Reply to Thread
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="CHenry" data-source="post: 3199519" data-attributes="member: 6281"><p>A single engineering miscalculation on the proper tension to pull on the pre-stressed beams is to blame.</p><p>Exactly like a flatbed semi trailer, its cambered up with no load and designed to flatten out when a dead load of X lbs is applied. Same with those beams, they are prestressed with huge cables inside the concrete and when its cured, the cable its released at both ends and the beams cambers up with no load. The amount of tension has to be calculated for the weight of the bridge deck to flatten them out.</p><p>So an engineer consultant goofed on that single calculation and no one caught it until it was way too late.</p></blockquote><p></p>
[QUOTE="CHenry, post: 3199519, member: 6281"] A single engineering miscalculation on the proper tension to pull on the pre-stressed beams is to blame. Exactly like a flatbed semi trailer, its cambered up with no load and designed to flatten out when a dead load of X lbs is applied. Same with those beams, they are prestressed with huge cables inside the concrete and when its cured, the cable its released at both ends and the beams cambers up with no load. The amount of tension has to be calculated for the weight of the bridge deck to flatten them out. So an engineer consultant goofed on that single calculation and no one caught it until it was way too late. [/QUOTE]
Insert Quotes…
Verification
Post Reply
Forums
The Water Cooler
General Discussion
So We Are Thinking About Raising Speed Limits...
Search titles only
By:
Top
Bottom