Paul F. Aubin is the author of many CAD and BIM book titles including the widely acclaimed: "The Aubin Academy Mastering Series" titles and video training at www.lynda.com/paulaubin. Paul is an independent architectural consultant providing Revit(r) and AutoCAD(r) Architecture implementation, training, and support services. Paul's involvement in the architectural profession spans over 22 years, with experience that includes design, production, CAD management, mentoring, coaching, and training. Read more about Paul at: http://paulaubin.com/about/ Darryl McClelland, LEED AP has 27 years of practical design experience in MEP engineering. Although his primary focus was the design of mechanical… systems, he spent 11 of those 27 years designing electrical and plumbing systems as well. He also ran his own engineering business for eight years. Read more about Darryl at: http://paulaubin.com/about/Martin J. Schmid, P.E. is a recovering design engineer, now working in product management. His current responsibilities include identifying requirements related to information modeling as it pertains to engineering analysis, as well as focus on the specific needs of users in various countries. Mr. Schmid has also worked in various roles in a variety of architecture and engineering firms, including electrical designer, engineering coordinator, and application developer.Read more about Martin at: http://paulaubin.com/about/