Bracing Rectangular Steel Vac Lid, -psi
Bracing Rectangular Steel Vac Lid, -psi
(OP)
Hello,
Since gradation of Architectural Eng. and Civil I have been a Project Manager, getting further and further from my engineering background...
at any rate... i have problem i would like to ask the pros here...
We have a vacuum tank at our facility. I have been asked to redesign the lid as it is failing. This lid will see pressure for 4-6 days... pressure will be broke (removal of lid) and reapplied...
The six sided rectangular lid are made of solid A36 sheets, 1/2" thick. Vacuum (negative pressure) is approx. 17 psi.
Largest piece that would see the most deflection is the roof, 146"X98". My thought would be to create a "roll cage" of either I beams or WT. I beam for example would run vertical, connect to horizontal "beam" on top and connect back down vertically, all welded.
I need a good formula for finding my max deflection and what size and distance of structural support I need. Overall box size is 145"x61.5", 97"x61.5" ends, top as stated, 146"x98".
Any help would very much be appreciated.
Since gradation of Architectural Eng. and Civil I have been a Project Manager, getting further and further from my engineering background...
at any rate... i have problem i would like to ask the pros here...
We have a vacuum tank at our facility. I have been asked to redesign the lid as it is failing. This lid will see pressure for 4-6 days... pressure will be broke (removal of lid) and reapplied...
The six sided rectangular lid are made of solid A36 sheets, 1/2" thick. Vacuum (negative pressure) is approx. 17 psi.
Largest piece that would see the most deflection is the roof, 146"X98". My thought would be to create a "roll cage" of either I beams or WT. I beam for example would run vertical, connect to horizontal "beam" on top and connect back down vertically, all welded.
I need a good formula for finding my max deflection and what size and distance of structural support I need. Overall box size is 145"x61.5", 97"x61.5" ends, top as stated, 146"x98".
Any help would very much be appreciated.






RE: Bracing Rectangular Steel Vac Lid, -psi
RE: Bracing Rectangular Steel Vac Lid, -psi
Also, I beam I found is cheaper... and I wouldn't need the Channel sub-bracing.
Comments?
RE: Bracing Rectangular Steel Vac Lid, -psi
RE: Bracing Rectangular Steel Vac Lid, -psi
Using that WT, or with a WT6, I wanted to go with 4" Channel on end between the WT's for more welding area and better stability for any torsion that may happen.
I have attached the drawing...
... Comments?
Thanks for taking the time...
RE: Bracing Rectangular Steel Vac Lid, -psi