ABSTRACT
The same situation occurs when commodities (concrete, structural steel, electrical, etc.) are priced. If they are factored from the equipment account or derived from the actual cost of other projects, they could either be high or low. However, if they are developed through take-offs, from drawings at various stages of completion, the errors will be omissions rather than additions and some growth in quantities is expected. The amount of growth will be inversely proportional to the completion of engineering.
