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I just tried uploading a model view, but it seems that my computer won't let me. Probably some IT block. But it is four 14 ft. diameter tanks all in a single row, approximately 40' tall. Current configuration has platforms connecting each one, with a spiral staircase at the second and last tank...

Hi All, I am a structural guy lurking to the mechanical side in search of some assistance. I have done a search but can't quite seem to find anything. I am managing a design project for a industrial facility which include a few atmospheric storage vessels of Class IIIB fluids. The site safety...

This is in the Southern US, Louisiana more exactly, I believe our water levels tend to fluctuate greatly down here. But like I said I am no geotech haha.

Thanks for the insight, I was afraid of that. I suppose they could potentially go to a pier and beam design with some deep footings instead of grubbing and replacing the entire footprint of their home.

Hey All, I do not deal on the realm of geotechnical often (structural guy here) and I have a wonderful friend who is wanting to build a new home on some country property they have. They got a soils report done on two 6' borings where their house Pad will be located. The reports are attached...

For sleeving the inside of the holes I plan on using a nylon shoulder washer.

Thank you all for the responses, have learned a lot. My current plan is to use a 1/4" thick neoprene gasket material between all aluminum and steel flat contact surfaces and nylon washers and spacers for the bolts.

Ed, I believe the chance of it getting real wet are extremely small. This beam is in a covered warehouse, but it does get humid within the warehouse as it is in the Southern US, and the warehouse is not air conditioned, I could see some condensation potential.

I am having to install an aluminum beam between two steel beams and I have read some conflicting information regarding galvanic corrosion. Tried to upload some images but doesn't seem to be working. I was proposing to use a galvanized double clip angle to bolt the aluminum beam into the...

We changed the Lbyy criteria to 12" and got literally no change in the allowable compressive strength. It still equates to around 1.3 kips. No matter what we change the Lbyy to, that value doesn't change. When we use the section shown below, the allowable comes out to be around 9.8 kips. We...

We currently are taking P-delta analysis into account in our analysis. Which I guess potentially was most likely not done in the early 80's when this building was constructed.

Each z-purlin has a vertical brace down to the bottom flange of the main girter beam. THrough some trial and error, we have determined that these vertical braces on each end of the purlin are introducing compression into the purlins. When you remove these from the analysis, the purlin behaves as...

My team and I have been contracted to review a PEMB for the installation of some new exhaust fans. These fans are attached to 8" Z-purlins which are through-fastened to an R-panel type metal sheathing. We have been utilizing RISA-3D to conduct the analysis. When running the analysis, the...