Hello All,
I have a question where I would like all your expert opinions or direction to references that would be helpful.
Background: I am currently working (EIT) for a railroad bridge project and need to analyze the abutment backwalls and drilled shafts. The problem I am having is in...
SRE,
The beam closely resembles the B15 but is actually a B65 from Carnegie Steel Company with I = 406 and S = 54.1 (man getting that info and ultimately my hand on the original pocket companion was totally fascinating). There definitely are standard WT sections that closely matches the...
Yeah, my bad guys, definitely should not have LOLed at something which could have devastating effects in the future. I have indeed performed calcs but just not from a moment capacity point of view, only looking at shear for transfer of load through bolts. I'll lay out my thought process and the...
@BridgeSmith,
No, I have not performed the analysis to see if the stringer has adequate capacity even after the section loss. I would assume YES given how we were driving a 35' Snooper for the inspection, and we did not die LOL. However, the City (Client) wants to fix all possible defects now...
Hi BridgeBuster,
Yes, that's correct. The location you marked is the area of complete separation of the top flange (lamellar rust) with the deck interface. And, given how the bridge is just going to be a pedestrian bridge, the clients preference is to repair rather than replace. here, is the...
Hi everyone,
I would like to get some opinion / inputs on a detail that I have put together for stringer repair on a Truss - Floor beam - Stringer system bridge.
A little background info on the bridge - Very Old Steel Truss bridge, Ard 1910's. Currently closed to traffic and, the repair...
Bridge & CANPRO
- Yes, seems like the wrap around weld is a problem and also the weld quality seems shady. The bridge was built around 1995. I have read from references and AASTHO guidance also that to reduced fatigue problems, contractors are required to remove the external diaphragms which...
Hi Everyone,
Going through a bridge inspection FCM report and came across these defect pictures. Our company has to come up with a repair plan. So, was trying to figure out what really caused them in the first place. Any hep / guidance / reference material would be appreciated.
Thanks...
Thanks BridgeSmith,
After going through a lot of resources, I am aware of recent recommendations of not welding to tension flanges. But was not aware of not welding to flanges if they are not connected to crossframes or diaphragms. For this particular bridge, the cracks at connection welds at...
Hi Everyone,
I work as an EIT and currently working on a bridge repair project for a State DOT. One of the common defects I found while going through the bridge Insp. Reports was cracked weld at the connection plate / vertical intermediate stiffener to top flange or web connection on a twin...
