Is this going to hold

[viperfish]

Originally Posted by sphelps

Without going into too much detail I ran half the frame with half the weight using A36 steel in the size you're planning and you barely get a safety factor of 2, typically for this application I like to see 5 or more. 2" with a .25 wall will give you close to 5 following the same stand design/layout.

HTH

A36 HSS? Dude, where you gettin' steel from?

[lastlight]

I ran some similarly technical tests and determined this would not work:

[The Grizz]

Originally Posted by lastlight

I ran some similarly technical tests and determined this would not work:

ROTFLMAO!! That is priceless Brett.

[Lance]

Originally Posted by lastlight

I ran some similarly technical tests and determined this would not work:

You ate all your kids popsicles to make that, didn't you?

[reefwars]

Originally Posted by lastlight

I ran some similarly technical tests and determined this would not work:

its true brett it didnt there was a design flaw so they had to revamp the whole thing and after 3yrs of structural engineering they managed to come up with this :

[The Grizz]

A36 is the most common and readily available steel grade used in structural fabrication.

If it is possible go with 2 mid supports splitting the tank length into 3rds.

[jorjef]

Originally Posted by The Grizz

A36 is the most common and readily available steel grade used in structural fabrication.

In the states for the most part. A36 yield and tensile strengths (36K) are no where near what Canada uses or at least Saskatchewan. Tubing and beam are most often called with a 50K yield and bars with 44K.

[sphelps]

Originally Posted by jorjef

In the states for the most part. A36 yield and tensile strengths (36K) are no where near what Canada uses or at least Saskatchewan. Tubing and beam are most often called with a 50K yield and bars with 44K.

Yes there is stronger steel out there but A36 is pretty common even here in Canada and you'll also have a hard time finding 1-1/4 in anything cold rolled, likely it will be hot rolled and at best A-36. Plus $20 says they have no idea what steel it is so for me to assume it's the strongest available would be pretty foolish. Anything you get from a local hardware store isn't anything special. Like I said before, without getting into too much detail that's what I came up with, take it for what it's worth to you.

[viperfish]

A36 is common in plate and bar stock but you'll be hard pressed to find it in HSS so no sense recommending it to a guy looking for HSS to build a tank stand. 44W (or the Canadian version 300W) is sometimes available and 50W (Canadian 350W) is also sold in HSS stock. I wish I had a dollar everytime an Engineer specified a material grade/shape combination that doesn't exist.

This technical jargen doesn't mean a roll of beans to our guy that's looking to build a stand. I think it's safe to say whatever grade he buys as long as it's plenty thick and sized right (Grizz had it right with the 1.5 or 2" x .188 HSS) and has it welded true and square by someone that is a decent welder, there will be no issues. I've seen so many stands that the welding looked like a bird crapped on it, and they held (God only knows how) so the key is not to Engineer it to the minimum, overbuild it so there's no chance of it falling apart.

[sphelps]

Wasn't recommending anything, just trying to answer the question at hand, will it hold.... What material? You tell me.