Hello,
I am putting a calc together for a conduit hanger where the conduit are fitted b/w W beams as shown. Flanges will have a notch to accommodate the conduits for snug fit. Can someone point me as to how I can find the capacities of W Beam with a notch in flange? The beam will bent about...
Hello,
When analyzing a simple span bridge (Fixed bearing at one abutment and expansion bearing at other abutment), would I assume for all the temperature movement be taken by the expansion bearing and hence no force traversed down to the abutment piles of fixed bearing?
I am computing loads to...
I am unclear on which options to choose for design of a pier column. The pier column will be between a pier cap and drilled shaft. The length of column is about 26 ft. My understanding is it will be a sway frame in y axis for sure but not 100% clear on x axis (y being the axis parallel to bridge...
I am unclear on which options to choose for design of a pier column. The pier column will be between a pier cap and drilled shaft. The length of column is about 26 ft. My understanding is it will be a sway frame in y axis for sure but not 100% clear on x axis (y being the axis parallel to...
Currently working on a load rating job. Using SAP to do a 2d model of the girder and then calculating capacities separately to determine the RFs. How do you load the exterior girder with sidewalk on it? AASHTO doesn't clearly specify anything about the loading to be used here. Attached is...
Hello,
I have come across a bridge that has diagonal cracks on the pier diaphragm as shown in the image. The bridge is a prestressed girder bridge. I know there are a number of reasons that could cause this but I have heard this is pretty common on prestressed girder bridges.
Can someone list...
Hello Guys,
I am working on the substructure design of a CIP Slab bridge.
Can anyone suggest how to determine TU/FR (Temperature and Friction forces) for the design of the substructure? I have attached the deck and abutment connection for your reference.
Typically in conventional girder...
Hello all,
Working on Pile foundation substructure. I have determined total lateral force in X and Z directions acting on the group of piles.
Was provided 1" deflection and 3" deflection lateral resistance by Geotech with a P multiplier of 0.8. Is it Geotech's responsibility to incorporate the...
Contractor made an error in placing the girder. Girder web is not concentric with bearing pad after girder erection. Center of girder web is at an offset of approx 1.5" from the center of bearing. What calcs does one show to justify this shouldn't be a problem ?
Hello everyone,
This is my first time posting here.
I need to design a junction box (see attached). Have received conflicting inputs from other sources on the design approach. Anybody here ever worked on something similar? I would like to get a brief design approach...
