R314.2.2

Section R314.2.2 is titled 'Alterations, repairs and additions' and covers requirements for devices which detect and warn of smoke accumulation. The requirment for smoke alarms to be installed anytime an alteration, repair, or addition requiring a permit occurs to a dwelling unit is established. The purpose of this section is to require smoke alarms anytime an alteration, repair, or addition requiring a permit occurs. This section has 2 exceptions which exempt the requirement for smoke alarms to be added when certain specific types of work are done. The purpose for these exceptions is to clarify that certain specific types of work shall not be prohibited from being done, where smoke alarms are not going to be installed.

The model shows an x-ray of the skin of an existing house and a highlighted addition, with enlarged smoke alarms shown in both to symbolize that smoke alarms are required to be added in both the existing portion of the dwelling unit and the addition when the addition is constructed.