Case Study: Deploying an Overbuild Approach to Increase ICU Capacity & Capability A Deeper Look Health systems need to have the right capacity to meet patient demand and to enable the centralization of corresponding care units. In order to ensure optimal care quality and efficiency, organizing departmental proximities and patient flow based on acuity is critical. To this end, an overbuild expansion can help resolve capacity, organizational and urban challenges for a health system.