Similar to previous answers, there's no reason you can't do a longitudinal weld - it's not much different from the weld to the flanges. Provided you've done the checks for fatigue / fracture tolerance of the final structure, have an appropriate weld procedure, and have an appropriate temporary...
My understanding is that 4x3" RSJ are British sections originally - we used to use them here in Australia. If the top flange is not affected, why not just weld an overplate on the web? This has significant advantages:
When overplating esp. for strength you always need to think about how are...
As someone who has done a LOT of structural inspections looking for corrosion damage, I'd also suggest the following in addition to KootK's comments:
It's always a good idea to remove the corrosion before starting to do your engineering, or alternatively put in a step to get an engineer to...
The commentary to AS4100 (Australian Steel Code) states the origin of the 2.5% value used for AS4100: "A stiffness requirement is not given, ... This follows the finding (Ref. 15) that the stiffness requirements for centrally braced columns are satisfied by practical braces that satisfy the 2.5%...
Just Some Nerd (sorry, new at this and don't know how to refer to a previous user): By "encourage the grads to make their own toolbox" I didn't mean that the directors here encourage them to create spreadsheets from scratch for every possible problem. I agree with you that this is a quick way to...
A few thoughts come to mind.
Unless you stop your employees from saving the files to their computer they're going to be able to take copies of anything you have. Even if you stop them from saving the files, you're probably not a good enough IT expert to stop them taking them some other way...
Use a spreader bar arrangement to lift off a single hook from a single crane, and use the guidance in that German publication to simplify things? Or use a spreader bar from one hook on each crane and again use the German publication (it has an example of 2 crane lifts). If done right, spreader...
There is a really good reference from a German insurance group as well, including example calculations.
https://www.tis-gdv.de/tis_e/ls/stabilitaet_von_aufhaengungen/kapitel1-html/
Similar to canwesteng, in mining / heavy industrial it's been my experience in Australia that a demolition sequence / or construction methodology is usually required by clients, especially for modifications to existing structures.
I did checks on about 15 of these items on a site in Central QLD approx. 8 years ago now. None of them were on the mesh yet we still struggled to justify the supporting structures for about half of them. They were often putting small PFCs into heavy torsion and other nasty things.
I'd be very...
It would be good if the ASI can put out something like the SRIA's historic reinforcement guide, but for steel. I tried to contact them about something about 4 months ago but still haven't heard back from them so I'm not holding out hope they'll get back to me soon on this one.
I doubt the...
Thanks for that Ingenuity - who knew Lysaght made anything other than roof sheeting? Looks like they used to sell anything and everything! Do you have any idea of the grade of steel? It didn't seem to be in that document. If worst comes to worst I can just go with AS4100's 170/300 rule.
On the...
Hi,
Does anyone have reference material for historic grades of steel tubing in Australia? I am looking at a project involving a truss structure built out of tubing, and all I have is the following information:
* OD and Thickness listed as what I believe is a gauge. E.g. "1 11/16" OD 9g"
* The...
