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Vibration in Slabs

 
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adutt
Progressive Member
Progressive Member


Joined: 26 Jan 2003
Posts: 43

PostPosted: Sat Oct 30, 2004 8:00 am    Post subject: Vibration in Slabs Reply with quote

SUBJECT: Vibration in Slabs



Dear Ravi Joshi,



This your querry you raised on 18th October 2004

Firstly you need to know from the blower  manufacturer the frequency
characteristics of the blower.(RPM)



Next you need to find out the natural frequency of the slab (free
vibration of the slab) . The vibrations are not likely to shake the
entire RCC frame. You can compare the  two frequencies & if they are
apart by twice or more it is okay.



You can put isolation pads & springs below the machine & mount it on the
slab .



You can refer the excellent  book on Vibrations of Machines/Machine
foundations  by Major (IVth volume -Vibration  of  Buildings & Bridges)
.



The Exact name of the book is "Dynamics in Civil Engineering-Analysis &
Design ,Volume IV -Vibrations in Buildings & Industrial Structures.
Dynamics in Hydraulic Structures & Bridges"



With Regards



Amit Dutt



Structural Engineer

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