I have 45 years of experience and specialize in the field of mechanical and electrical designs for buildings with specific knowledge in the areas of heating, ventilating and air conditioning, plumbing and sprinkler systems, and electrical and fire detection systems. I have published on such topics as HVAC, boiler and mechanical building code requirements, automatic temperature controls and building management systems. I have testified 12 times on topics such as plumbing, mechanical and HVAC, and electrical.