313.3 Minimum structure-borne noise and vibration isolation requirements.
MC § 313.3
All isolators shall comply with the requirements of Sections 313.3.1 through 313.3.10. Where vibration isolation of equipment and appliances is employed, supplemental restraint shall be used to accomplish the support and restraint. Exception: When specified by the registered design professional, the requirements of Sections 313.3.1 through 313.3.10 may be modified provided that the equipment, appliances, and supports shall be designed and installed so that continuous or intermittent vibration transmitted to structural slabs shall not exceed the following values between 8 Hz and 80 Hz on the structural slab in the affected occupancy space: 1. Group E, I or R occupancies: 5,600 microinches (142.4 µm) per second.
2.All other occupancies: 16,000 microinches (406.4 µm) per second. For the purposes of this exception, transmitted vibration shall be in accordance with the following parameters: 1. The peak third-octave band RMS velocity measurements.
