Skid basement design

[ElCidCampeador]

Good Day,

I'd like to learn more about designing of skid basement for piping/pressure vessels (see picture)

https://res.cloudinary.com/engineering-com/image/upload/v1557007034/tips/abas_pkaj11.jpg

.

Do you know a quick guide or a book that I can use?

 

[ElCidCampeador]

Anyone can help me? Thanks!

 

[TUGB04T]

I have designed many, but I don't believe I have ever seen any literature that would aid with this.

I have always based it on required footprint requirements, load values per uprights, and total load values for skid base frame.

Now that I have typed that I do remember sourcing some information from a e-nook I had downloaded and printed...

I'll get back to you as soon as I find it. I believe I still have the e-book in my dropbox.

If I don't find it feel free to contact me with any questions you may have during design and if I can help I will...

Best advice I can use, is be sure of your grade choices and size choices.. If you're going to be tendering this or pricing these two things can mean the world of difference in cost and schedule impact.

TUG.

 

[TUGB04T]

ElCid;

Google "f201508151439617857.pdf skid" it was the second item that came up on my search.

Its only short pdf, explaining the need for what calculations and for what reasons with justifications.

Not the one I was talking about earlier in my comment, but is one I have stored on my dropbox as well for being a good read.

Cheers,

 

[TLHS]

From your post history, it looks like you're not asking as a structural engineer how to do the specific type of skid detailing, but rather as a mechanical engineer how to do the structural engineering part of the skid.

It's pretty standard structural engineering when you aren't dealing with vibration or dynamic loads. If you're just looking to do this a few times, get a local structural engineer. If you're looking at doing this a bunch of times, still get a local structural engineer to supervise or review whatever you come up with until you have a reasonable amount of knowledge. The dangerous part is that you will not know if you've missed something.

 

[ElCidCampeador]

I'm not a structural engineer, I only design pressure vessels. This interest in baseframe and support is both a hobby and part of my job, which doesn't mean design it (my client do it this part for me) but at least check it. My opinion is that "four eyes are better than two"

If you any other suggestion, I'm all ears

 

[ElCidCampeador]

Any ideas?

I don't undertstand if it's only a problem of FEA or there are sort of guidelines too

 

[WARose]

IIRC, Blodgett's 'Design of Weldments' took on pump bases and so forth. I have it and will confirm that tonight.

For initial sizing, I'd come up with a very stiff frame and run through all the normal steel design calculations. I'm not use to seeing (significant) unbalanced forces from pressure vessels, but the piping involved might generate some of significance. (Something to check with your pipe stress guy and the pressure vessel vendor.)

Once you've got a pretty stout frame set up......and if the unbalanced forces warrant it.....you may want to do a time-history analysis on your FEA program of choice (STAAD is a personal fav of mine) and see what you get as far as displacements, fatigue forces and so on.

Personally, I think AISC 9th edition (steel manual) is the most straight forward for checking allowable fatigue stress ranges. (But I'm old school.)

In any case, I hope this helps.

EDIT: By the way.....just some nitpicking about terminology....I wouldn't call a steel skid a "basement" on a structural board.

[red]2nd EDIT[/red]: Confirmed. 'Design of Weldments' does treat machine skid design.