Utah Code Title 15A. State Construction and Fire Codes Act § 15A-2a-201. Amendments to Chapter 4 of IBC

In IBC, Section 403.3.2, is deleted and replaced with the following:  “403.3.3 Water supply to required fire pumps.  In all buildings that are more than 420 feet (128m) in building height, and buildings of Type IV-A and IV-B construction that are more than 120 feet in building height, required fire pumps shall be supplied by connections to not fewer than two water mains located in different streets.  Separate supply piping shall be provided between each connection to the water main and the pumps.  Each connection and the supply piping between the connection and the pumps shall be sized to supply the flow and pressure required for the pumps to operate.

Exception:  Two connections to the same main shall be permitted provided that the main is valved such that an interruption can be isolated so that the water supply will continue without interruption through not fewer than one of the connections.”