×
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

Elevated Commercial Washer

Elevated Commercial Washer

Elevated Commercial Washer

(OP)
I've got a hotel job where the architect would like to place a commercial washer/extractor on the elevated slab on metal deck (On Housekeeping Pad). The unit is only about 1000# unloaded, but spec sheet give a frequency of 16.8Hz and a floor load at max extraction of roughly 1500#.

1. Does unit need to be placed on a fully isolated support or is there a way to justify or isolate vibration on primary building slab?
2. If unit is placed on isolated frame, what procedure should be used for design of isolated frame system for dynamic loading?

Thanks!

RE: Elevated Commercial Washer

If it's that light, probably some of the rules of thumb (i.e. 5 times the weight of the equipment) might be sufficient. (In lieu of a dynamic analysis.) Just depends how flexible the support framing is. Any idea how much unbalanced force it is generating? You may want to check with the manufacturer: they may have recommendations for support.

RE: Elevated Commercial Washer

Is the metal deck shared with floors hotel guests will occupy ?

RE: Elevated Commercial Washer

Unless the unit is on the second floor, it probably does not make economic sense to design a multi-story frame to support a washer. For the equipment I usually work with, the manufacturer will provide any type of isolated supports, springs, etc if the equipment tends to cause vibration issues. If you do perform a dynamic analysis, a SDOF model would probably suffice since it is simply and elevated, lumped mass. Compare the frequency of the unit to the natural frequency of your structure.

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