vibration due to air handling unit/compressor
vibration due to air handling unit/compressor
(OP)
If an reinforced concrete frame structure, two to three spans, in one direction and the same in the other direction are subjected to vibration due to air-handling unit, causing discomfort to the occupants, what actions do we take? The building is a 3-storey r.c structure. The frames are filled with brick along its periphery. Is the structure in any danger?






RE: vibration due to air handling unit/compressor
Remove the air handling equipment the frame will then not vibrate.
Really you need to give a lot more information before any sensible guidance can be given.
Describe the building in greater detail. Are the slabs spanning in one or two directions? What supports the slabs? What is the horzontal bracing system? What is the building used for? What is the air handling equipment? What is causing the vibration? Are there any anti-vibration mountings? How are the occupants discomforted?
RE: vibration due to air handling unit/compressor
RE: vibration due to air handling unit/compressor
All AHU's that I deal with come with vibration isolators to dampen the vibrations (springs, neoprene pads, etc). These are facory supplied devices. I would check on that first.
Regards,
Lutfi
www.cdeco.com
RE: vibration due to air handling unit/compressor
Is this a new installation? Has something changed recently? You mention discomfort to the occupants and then ask about structural safety. It sounds serious. Perhaps the first action should be to inspect the equipment for possible mechanical failures.
Effective isolation of problems like this can sometimes be difficult to achieve.
-Mike
RE: vibration due to air handling unit/compressor
RE: vibration due to air handling unit/compressor
I was involved with a problem like this with a rooftop HVAC system where vendors and a vibration consultant were called in. Some improvements were made but what was really needed was judged to be too expensive by management.
That's not to say your problem can't be corrected however, but you might need to contact an experienced engineer in this field for an onsite visit. It depends on the details. The machinery, structural support, maintenance, etc.
Good Luck,
-Mike