// CODE SNIPPET
10.4.2.1 Protection From Freezing
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The depth of cover for private fire service mains and their appurtenances to protect against freezing shall be in accordance with 10.4.2. [24:10.4.2.1]
The top of the pipe shall be buried not less than 1 ft (300mm) below the frost line for the locality. [24:10.4.2.1.1]
The depth of piping shall be measured from the top of the piping to the final grade. [24:10.4.2.1.2]
Where listed piping is used and the bury depth differs from this standard, the listing limitations shall apply. [24:10.4.2.1.3]
Where private fire service mains are installed above ground, they shall be protected from freezing in accordance with NFPA 13. [24:10.4.2.1.4]
Private fire service mains installed in water raceways or shallow streams shall be installed so that the piping will remain in the running water throughout the year. [24:10.4.2.1.5]
Where piping is installed adjacent to a vertical face, it shall be installed from the vertical face at the same distance as if the piping were buried. [24:10.4.2.1.6]
Protection of private fire service mains from freezing using heat tracing shall be permitted when the heat tracing is specifically listed for underground use. [24:10.4.2.1.7]
Heat tracing not listed for underground use shall be permitted when piping is installed in accordance with 10.1.4. [24:10.4.2.1.7.1]
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