INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Manlift load on a checker plate floor

Manlift load on a checker plate floor

(OP)
I appreciate if someone that knows the steps of checking a checkered plate floor is okay to carry loads of a manlift on it.
They are intending to place a manlift on 17 floor of an open steel structure tower that is covered by a checker plates.
Any Excel sheet or sample calculation that can help me through

I greatly appreciate for your kind direction and help.
I need the design steps to follow. This is just checking and not designing.

Thank you

RE: Manlift load on a checker plate floor

You can start with the steel manual. Page 3-156 in the 14th edition.

You can try modeling it any FEA program (RISA would be my choice).

You can consult Roark's Formulas for Stress and Strain. pdf here http://materiales.azc.uam.mx/gjl/Clases/MA10_I/Roa...'s%20formulas%20for%20stress%20and%20strain.pdf
The link doesn't seem to work but just google "Roark's Formulas for Stress and Strain"

RE: Manlift load on a checker plate floor

(OP)
Thank you for your response
I don't have any FEA software.
Couldn't find Roark
Any hand calculation any handbook example
They need it quick and I am at the corner trying to help

RE: Manlift load on a checker plate floor

(OP)
Shotzie (Structural)
Thank you so very much for the document.
May I ask what page and how I use it to check if the checker plate is adequate for the manlift load?

Thank you

RE: Manlift load on a checker plate floor

Treat wheel as concentrated load
Determine the plate strip width taking the wheel load per plate thickness and wheel dimension
Check the bending of the plate strip considering the membrane force
Check the welds between the plate and supporting members per the membrane force in the plate

RE: Manlift load on a checker plate floor

(OP)
dik (Structural),
Thank you very much.

Shu Jiang, P.Eng, PE (Structural),
Thank you by the chance do you have a sample calcs?

Thanks

RE: Manlift load on a checker plate floor

StrP88... thank Alex... He's written some fabulous spreadsheets...

Dik

RE: Manlift load on a checker plate floor

StrP88 (Civil/Environmental)

It is not easy do the calculation manually. I have a ansys apdl command file if you need.

RE: Manlift load on a checker plate floor

(OP)
Shu Jiang, P.Eng, PE (Structural),
Thank tou is very kind of you offering it but where I am working they don't have ANSYS !

Anybody has a copy of the book that deal with wheel loads on slab on grade? Is it the same technic I need to use?

Thank you

RE: Manlift load on a checker plate floor

StrP88, if they're rushing you that much, just say no.

RE: Manlift load on a checker plate floor

The key issue of the analysis is how to calculate the membrane force in the checker plate. The ratio of span to thickness is normally large and the membrane effect can not be ignored. It is tough to perform manual analysis.

RE: Manlift load on a checker plate floor

Or its super simple because the thickness of a shell is zero and math is scalable. Multiply the span by 0.6

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close