Code: NBC - The British Columbia Building
Code 1998 is the same as the NBC of Canada.
General Information: The NBC contains sound transmission
requirements for residential occupancies. Below is the section of
the code related to this:
Section 9.11. Sound Control
9.11.1. Sound Transmission Class Rating (Airborne Sound)
184.108.40.206. Determination of Sound Transmission Class Ratings
1) Sound transmission class ratings shall
be determined in accordance with ASTM E 413,
"Classification for Rating Sound Insulation," using results from
a) ASTM E 90, "Laboratory
Measurement of Airborne Sound Transmission Loss of Building
b) ASTM E 336, "Measuremnt
of Airborne Sound Insulation in Buildings."
9.11.2. Required Sound Control Locations (Airborne Sound)
220.127.116.11. Minimum Sound Transmission Class Ratings
1) Except as provided in Sentence (2), every
dwelling unit shall be separated from every
other space in a building in which noise may be generated
by a construction
providing a sound transmission class rating of at least 50, measured
in accordance with
Subsection 9.11.1. or as listed in A-18.104.22.168. in Appendix A.
2) Where a dwelling unit is adjacent
to an elevator shaft or a refuse chute, the separating
construction shall have a sound transmission class rating of at
least 55, measured
in accordance with Subsection 9.11.1. or as listed in A-22.214.171.124.
in Appendix A.
For more information, visit the STC section
of our website.