ENGINEERING.com has updated it's forum.  To post a question please visit the new Ask@ Forum.   

With a database of over 10000 questions the library will remain available for an extended period.
Q&A


Chris		 Steel Plate Rectangular Top, vacuum pressure help... All help is greatly appreciated View All
Hello,
Since graduation I have stepped further and further away from my engineering background... kept the same bad spelling however. Here's my Q... We have at our facility a vacuum rectangular tank that has a removable lid. (62"HX97"WX145"L) 1/2" thick A36 steel, all 5 pieces solid. This "cap sees -17 psi vacuum. For the bracing, i know the top piece is the largest, therefore it will see the most deflection. From my architectural eng classes, i know i will have to find the section modulus required, moment of inertia and pick a section modulus that covers my min. However I do not have my notes (i know, i know) and i would like some guidance on the formulas and the flow of how to find what bracing i will need. I've worked on this some and got some help at engtips and came up with a WT5X16.5 every 24" going vertically up the 97" side, connecting to the bracing on the top. The top WT's span the entire width and weld to the top of the side vertical pieces. The stem of the WT weld to lid.

15 years ago - 9 months left to answer. - 1 response - Report Abuse
Respond to question
    0      [lnkReport]        0       0       
Share |
  Responses

Niel
 Chris:

This is not a trivial challenge. I would recommend that you contact a stuructural engineering firm familiar with designing, constructing and comissioning these types of tanks.

Each of the beams you are proposing will need to support near 40,000 pounds of force (97" x 24" x 17psi). That is a lot of load to be supported by a WT5X16.5 beam.

Prior to starting construction that designed will need to be reviewed and stamped by PE.

Niel

15 years ago

Source:


  0     0         

ENGINEERING.com does not provide engineering advice. The Ask@ service is a forum for members to exchange ideas relating to the world of engineering. We caution users not to accept any responses that they receive without further validation, and not to rely on any engineering advice that they may get from other members of the Ask@ forum. ENGINEERING.com specifically disclaims any obligation to validate or verify any information posted within the Ask@ service. ENGINEERING.com encourages users to seek the services of a professional engineer for any engineering advice they may require.