We are leaning toward modernization and we are located in the Chicagoland Market. Another Questions arose. I have been told that there may or may not be a double piston in the pit. According to what I know about the building which was built in 1973, the elevator is in compliance with 1968 standards. Does that mean it has a single or double piston?
Last edited by BrianW; 02/17/15 04:51 PM.