Penn Presbyterian Medical Center

Philadelphia, PA, The United States

Property owner

Penn Presbyterian Medical Center

Main contractor

HSC Builders

Architect

BBLM Architects

Acoustic consultant

Metropolitan Acoustics

Structural engineer

Keast & Hood

Details

16,000 lbs MRI equipment

Building type

Healthcare

Application

Equipment protection

Intervention level

Equipment

On the 1st floor of a main Philadelphia hospital, a Magnetic Resonance Imaging (MRI) equipment needed to be installed. Vibration transmission from road traffic and its impact on the MRI equipment and its imaging quality was a big concern. Thanks to the installation of a CDM-MONT floating floor, the vibration levels are well below the treshold provided by the manufacturer.

On the 1st floor of a main Philadelphia hospital, a Magnetic Resonance Imaging (MRI) equipment needed to be installed. Vibration transmission from road traffic and its impact on the MRI equipment and its imaging quality was a big concern.

CDM installed a CDM-MONT solution with 2.5 Hz spring isolators in a 10” floating concrete slab. The floating floor was jacked to create an air gap of 2”.

Thanks to an in-house finite element analysis, CDM could design the special springs needed to guarantee the specified isolation performance with minimum differential deflection and tilting of the MRI equipment, while coping with the eccentric loading.

CDM-MONT prior to reinforcement

Installation of spring isolators

Jacking of floating floor

Sooch SanSouci
Metropolitan Acoustics

Great job! Measurement results showed that transmissibility reductions from 9 Hz and above are greater than 92%. Thus the system works as designed and the randomly occurring base building peaks at 15Hz are well below the threshold provided by Siemens. So all is well.

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