This project is Exelon HQ, the new headquarters of Exelon/Constellation energy in downtown Baltimore. The tower is 23 floors and is in the heart of Baltimore (Harbor East). There are a pile of large (100hp) horizontal split case pumps that have 12' thick inertia bases, along with over 700 spring hangers in the mechanical equipment room. What is unique about this job is the "delegated design" on the chilled water and condenser water vertical pipe risers. We isolated the vertical risers through a series of anchors and springs.