Integrated Project Delivery (IPD) (JM 12), which examines a project management approach that involves all the parties involved in a project – including the owner – at the earliest possible stage to enhance collaboration and minimize waste;. • Minimizing the Risk … The Mechanical Contractors Association of America (MCAA) serves the unique needs of approximately 2,500 firms involved in heating, air conditioning, refrigeration, plumbing, piping, and mechanical service. We do this by …