We are finally getting rid of a Triplex of T-4 20 stops. Looking for best practices on keeping the disruption to traffic flow to a minimum. There are two risers, when we turn the first one over for use, and start on one on the other cars, there will be two riser's that operates two different elevator's. First thoughts are to have one dedicated to lower floors and the other to higher floors.
Even more troubling, the upgraded elevator will work differently from the one that is still to be upgraded on fire service.
Please offer insight as to what has worked well on other projects.