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Hi, I posted this thread a week ago and thank you for the responses. I have a question regarding lateral torsional buckling. I have a plate that is stiffened with T-sections along its length, such that the web of the tee is welded to the plate. The plate is approximately 270 inches long...

I have a question regarding lateral torsional buckling. I have a plate that is stiffened with T-sections along its length, such that the web of the tee is welded to the plate. The plate is approximately 270 inches long and wide, with approximately 12 tees spaced 18 inches apart (approximate)...

I was adjusting my model a variety of ways and noticed that if I apply gravity as with time effects turned off, it doesn't matter if i reapply it with time effects turned on if my transient loading is a displacement time history. Results were the same whether i applied gravity or didn't apply...

I was wondering if anyone had issues or success using FSUM to extract results for a transient analysis. I applied a displacement time history to the base of my 2D model, and have been trying to get the shear and moment at different locations along the length using the FSUM command. I was able...

I have a 3D model that is fixed at its base. I have both a acceleration time history and displacement time history to read into my model. I've tried 3 scenarios. First, i ran the acceleration time history on my model using using the mode superposition method. I applied the acceleration to...

I was wondering if anyone had any advice where to look for how to analyze concentrated loads on concrete decks. I've seen in AASHTO information on wheel loads. Specifically it mentions two cases, one case for a tire load with reinforcement parallel to the traffic path and one case for...

I am supporting several beams along a concrete wall, with the heaviest load being 23 kips. It was recommended to attach an angle along the wall with one row of bolts. I felt that it would be better to have a support for each beam with 2 rows of bolts to reduce the pullout force, however, I am...

I have 2 questions regarding the lateral bracing of beams. First, when can a concrete deck sitting on a beam be considered to adequately brace the beam laterally? I know you can put shear studs in the beam, which would obviously brace the top flange from lateral movement. If there are no...

I am looking for opinions on the evaluation of corroded steel W-sections. When you have a new section, it is easy enough to calculate your sectional modulus, and your maximum bending and shear stresses. Regarding your allowables, you can easily determine if you are compact, non-compact, or...

I am wondering if this connection is considered fixed or SS. Originally, it was a bolted connection, a beam with angles bolted to its web and the web of the beam it was bolted to. Due to existing conditions (heavy corrosion around the connection), constraints around the area, etc, one foot of...

I was wondering how you design welds for shear flow along a built up girder (i.e. the flanges are welded to the web) with a distributed loading. Say you have a simple span with a uniform distributed loading, you shear would be a linear function of the location along the beam, with the greatest...

I have a long deep beam, which has a slender web. The loads acting on this beam are a combination of concentrated and distributed loadings. Flanges are non-compact, but the bending stress induced from these loadings is less than the reduced allowable bending stress. The beam has one-sided...

I am wondering if it is possible in bending to have the web of beam deform (buckle) without the flanges showing any signs of deformation. If the web is slender, and the flanges are really stiff, can this occur? Supposively if this beam is being operated correctly, there will be no...

I have a question regarding the timber load duration factor, Cd. I have asked people and have received different answers. The way i interpreted the description in the NDS code, is that the amount of time applied is the total time over the normal load distribution (10 years). It states that...

Hi- I was wondering if anyone has experience with software specifically for pile design. Currently, I have been looking into Lpile, Mpile, and ALLpile. Does anyone have comments on these or recommendations for other programs? Thanks a lot

I would like to connect two W18 beams together using a welded connection. The web will have a full penetration weld, and the top and bottom flanges will have a certain size plate fillet welded over and centered at the interface of the two beams. It is intended to be a moment connection. My...

Hi, I have a beam that is considerably corroded. Our repair calls for a welded channel along the length of the web of this beam for reinforcement. Analyzing the beam now as a built up section with included detioration, my sectional modulus is acceptable. My question is how do I analyze the...