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Greetings Eng-Tips community, At the end of August, I will be beginning graduate school. I will be attending two classes a semester, two nights a week, while still maintaining my current engineering job. I have been out of school for almost four years now. I got my undergrad in Civil and...

Greetings, I have a question regarding column buckling. I have a tower with four posts that are tied together with horizontal members. When I put an excessively large, non-eccentric, axial load on the posts, the columns do not buckle. It seems that the columns just keep compressing. Even...

Can you provide a sketch of what you are talking about? To prevent or fix bowing, we always either build negative camber into the jig or use a torch to heat certain areas after welding.

I second bridgebuster. We use system scaffold for shoring jobs. Screw jack on the bottom of tubular columns. You can essentially make this as tall as you want, provide it is braced properly.

Why is a vendor making changes to your drawings? In any case, we never send out AutoCAD files. Print to PDF and email PDF is SOP.

I've never heard of that. It just stains it.

I agree with arunmrao. Fake certs are not uncommon, especially when you need it to say M&M in America.

Why not avoid welding by machining threaded holes into the manifold for the barbs to screw into? Use a thread sealer and be done with it.

Can you post a sketch or picture? I do scaffold and shoring layouts all day long.

A google search references truck combinations. 6x4 TT refers to the tractor(trailer) and tridem axle ST is tri-axle semi trailer. Refer to the chart on page three in this pdf. https://ujdigispace.uj.ac.za/bitstream/handle/10210/1251/APPENDIXB.pdf?sequence=5

I believe he meant shoring support.

I've managed to enter and save my custom cross sections, however the sectionDB manager won't save the plastic modulus. It keeps reverting to zero. Any thoughts on how to stop this?

Hey guys, I was wondering how to enter and save custom cross sections in Staad V8i. I don't have the Section Wizard but if that is the only way to save custom cross sections I will have to make the investment. None of the sections we use are standard. Thanks, -Tony