Horizontal tank mounting supports
Horizontal tank mounting supports
(OP)
I am working on a 16" dia by 34" OAL horizontal tank designed to 312 psi. Shell is .250 SA 53B pipe. Heads are 2:1 elip SA414G. The desired mounting is to use 2x2x1/4 angle running parallel to the shell axis such that the tank will be flush to the mounting surface. This is not a saddle design, skirt, lug or legs for that matter. I am wondering what types of calculations I need to perform and where I might find them? Any suggestions would be a big help.





RE: Horizontal tank mounting supports
Regards,
Mike
RE: Horizontal tank mounting supports
The geometry is simple. Think about laying 2 angles on a table, parallel to each other about 12 inches apart. Then sit the horizontal tank down on the angles and weld them up. I am looking at the attachment calcs. I have no software and doing all the number crunching by hand.
The other question is that I have to confirm the mounting will withstand static loading in any direction equal to four times the weight of the container and it's contents.
RE: Horizontal tank mounting supports
These calculations can be done by hand, if you had a copy of WRC-107 or a similar method, but it won't be easy.
Maybe find some freeware / cheapware?
Regards,
Mike
RE: Horizontal tank mounting supports
RE: Horizontal tank mounting supports
There are some load cases in Roark's Formulas for Stress and Strain for a pipe supported by two load points like that, but they don't account for the effects of the ends.
RE: Horizontal tank mounting supports
RE: Horizontal tank mounting supports
RE: Horizontal tank mounting supports
RE: Horizontal tank mounting supports
16 x 3.14 x 1/4 x 34 x .283 = 120 lbs of steel for the walls.
About 30 lbs for the heads.
He's got a complex "beam" (pipe plus two angle iron in cross section) with a continuously supported reaction down the length of the angle iron. Looking at an axial cross-section, he's got a cylinder supported by two angle irons: again, the 16 inch dia cylinder resisting "bending" by the upper and lower arches of the cylinder, supported by the two angle iron.
But at so light a dead weight load, does he need to show the calc's for that near-zero bending load?
RE: Horizontal tank mounting supports
RE: Horizontal tank mounting supports
Instead of 1/4 thick leg, I would be more apt to use 1/2" thick legs thereby eliminating the need for stiffeners.