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R3 <br /> <br />These homes above are open on the front and the back. They are attached and over 8,500 Sq. <br />Ft. gross square feet which requires them to be sprinkled. These systems can be connected to <br />the same water line their domestic water comes from. Each unit has their own shut off <br />uormally placed inside the utility room. There is no "dog house", horn and strobe, FD <br />connection, aud no requirement for a monitoring system. If these houses were not larger <br />then 8,500 Sq. Ft. there would be no sprinkler requirement UNLESS they were three stories <br />or greater and attached to one another. <br /> <br />Domestic System <br /> <br />Unlike commercial sprinkler systems where rated metal piping needs to be used, residential <br />systems use a rated PVC, or CPVC pipe (Blazmaster) sprinkler pipe. The pipe is run <br />throughont the home in between warm walls so the pipes do not freeze in the winter. Thc <br />attics arc normally not sprinklered unless NFPA 13 requires it. That code does not kick in <br />nnlcss the occupancy is a nursing home or similar. <br /> <br />In an R3 (Typical home) system, some areas of the home are not required to be sprinkled <br />such as: <br /> * Bathrooms 55 Sq. Ft. or less in size. <br /> Closets, pantries and storage areas 24 square feet or less in size and where smaller <br /> dimension of the space is 3 feet or less. <br /> <br />4 <br /> <br /> <br />