I have a highrise that exceeds 400-ft in height. The engineer designed a combination riser with all of the floor control assemblies coming from one riser, and not alternating as is in code.
I'm wondering if there's something I'm missing - any way around alternating the floor control assemblies, like upper-level pumps being considered separate systems or something of the like?
Looking for better understanding here and being sure I'm not missing something bigger picture. Thanks in advance.
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