×
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!
  • Students Click Here

*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.

Students Click Here

Jobs

Machine bearing on second story

Machine bearing on second story

Machine bearing on second story

(OP)
I need to install 3 machines in a second story manufacturing facility.  Each machine weighs approx 6400lbs and is a static load (ie. no pounding).  They are to be in a 16' x 14' footprint.  Each machine is supported by three leveling feet 4" dia.  The floor is rated at 2.6 psi.  When calculating the bearing stress of the machines on the floor it is 177psi for each leveling foot.

Is the floor rating based on an overall area of the facility?  Or is it based on a localized stress point (ie. my leveling feet)?  Do I need to know the location of building beems?  Is this bearing excessive for manufacturing machines?  Is the rating unusually low?

Thanks

RE: Machine bearing on second story

Common building design uses a allowable stress to calculate the average psf loading.  Commonly bearing plates are utilized to distribute small loading such as yours.  Higher loadings dictate design investigations to determine beam locations or additional support requiremnents.

RE: Machine bearing on second story

lcd123,

It seems each leg has a load of 2,200#.
You should verify that the existing floor is capable to support these concentrated loads.   If possible, locate the legs on or very close to the existing beams.

If no additional load is placed on the area occupied by the machines, the average load on that area is approximately 85 psf (3*6400#/(16'*14')) that is less than the floor rating of 2.6 psi (375 psf).   

The bearing under the legs is relatively low.  The rating of the floor (375 psf) seems ok for an industrial facility.

AEF

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