Originally Posted By: rcloyd
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The 2000 International Residential Code (2000 IRC) states the following:
"Single and multiple station smoke alarms shall be installed in the following
locations: 1) In each sleeping room. 2) Outside of each separate sleeping area in the immediate vicinity of the bedrooms. 3) On each additional story of the dwelling, including basements and cellars but not including crawl spaces and uninhabitable attics. In dwellings or dwelling units with split levels and without an intervening door between the adjacent levels, a smoke alarm installed on the upper level shall suffice for the adjacent lower level provided that the lower level is less than one full story below the upper level."
Also, newly constructed homes and additions to existing homes must have detectors that are hard wired to the house electrical system with battery back up. The detectors must also be interconnected so that if one activates they all activate.
In existing dwellings, the location requirements are the same but the units do not have to be hard wired unless you are performing alterations/remodeling (removing of wall or ceiling panels) to facilitate the installation of the wiring.
Hope this helps,
Russell G. Cloyd
Intra-Spec Home Inspections
& Code Consulting, LLC