We have a project where the Authority Having Jurisdiction (AHJ) is requiring zone control valves and dedicated pipe from the standpipe to any IT rooms and sprinklers in elevator shafts.
As a result, we have three zone controls for each floor: (1) the floor sprinkler system, (2) IT rooms, and (3) any sprinklers in elevator shafts.
Is there a code or standard basis for this requirement, or would it be specific to the AHJ?
We're doing the work either way for this project since the AHJ is requiring it, but I would like to know for future projects. Thanks in advance.
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