The mechanical and electrical portions of a building typically account for 30% or more of construction costs. This type of work is very specialized and includes many various types of materials and installations which require detailed pricing -- piping, valves, ducts, fans, chillers, condensers, conduit, transformers, etc. All of these technical areas are covered. All costs are organized according to the industry standard CSI MASTERFORMAT which allows even the non-specialist to estimate easily. Over 14,000 unit prices, broken down into material and labor costs, and complete man-hour tables provide maximum coverage and flexibility.