At Greenbuild Expo 2015, engineers can pick up the “ASHRAE Design Guide for Tall, Supertall and Megatall Building Systems.” The book covers topics such as plumbing systems, HVAC systems, water distribuition, life safety and more. The book, which is co-sponsored by the Council on Tall Builidings and Urban Habitat, is for buildings ranging from more than 300 ft. to 1,968 ft.