Русско-англо-русский юридический словарь

Quantity take-offs (QTO) are a detailed measurement of materials and labor needed to complete a construction project. They are developed by an estimator during the pre-construction phase. This process includes breaking the project down into smaller and more manageable units that are easier to measure or estimate. (Wikipedia)

In practice, however, a construction quantity takeoff is a term commonly used in the industry to describe one of its most essential functions: the process by which a cost estimator reviews a set of plans during preconstruction in order to “take off” measurements from these plans to forecast construction costs. The term takeoff actually evolved from the phrase “taken off,” which loosely translates to “measured.” (1build.com)

Many work items measured in a quantity takeoff do not involve materials at all. A good example is “Hand Troweling,” which only has a labor price associated with it. (1build.com)