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USACE / NAVFAC / AFCESA
UFGS-15070N (September 1999)
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Preparing Activity: NAVFAC
Replacing without revision
NFGS of same number and date
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated 23 June 2005
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SECTION 15070N
MECHANICAL SOUND, VIBRATION, AND SEISMIC CONTROL
09/99
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NOTE: This guide specification covers the
requirements for vibration isolation and seismic
snubbing for mechanical and electrical equipment.
Comments and suggestions on this guide specification
are welcome and should be directed to the technical
proponent of the specification. A listing of
technical proponents, including their organization
designation and telephone number, is on the Internet.
Recommended changes to a UFGS should be submitted as
a Criteria Change Request (CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer
choices or locations where text must be supplied by
the designer.
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NOTE: This specification includes vibration
isolators and stops, seismic snubbers, machinery
bases and the installation, inspection, and testing
of the vibration isolation of machinery and systems.
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NOTE: The following information shall be shown on
the project drawings:
1. Extent of piping systems depicting isolation
hangers on the piping flow diagram. Pipe risers
having low thermal expansion such as condenser and
chilled water lines may be isolated from the
building structure by providing vibration isolation
units at the base and isolation guides at floor
slabs two to three stories apart. Hot water systems
risers and similar piping having high thermal
expansion will generally require one or more anchors
and expansion joints to obtain satisfactory support
SECTION 15070N
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