Engineering manhours

Figure 1-34A. Process engineering manhours accumulation pattern Project A. By permission, E. E. Ludwig [7].

Figure 1.1. Progress of material commitment, engineering manhours, and construction [Matozzi, Oil Gas. J. p. 304, (23 March 1953)].

Figure 1.2. Rate of application of engineering manhours of various categories. The area between the curves represents accumulated manhours for each speciality up to a given % completion of the project [Miller, Chem. Eng., p. 188, (July 1956)].

Engineering manhours for projects, 2 Enthalpy residual, 158, 159 Enthalpy-concentration chart, 524 application example, 529 construction example, 390... 

Figure 1.1. Typical timing of material, engineering manhours, and construction.

Figure 1.2. Rate of application of engineering manhours by engineering function process engineering, project engineering, and design engineering.

For document-related work, engineering manhours are estimated by allocating budget hours to each document. For this purpose each document type is usually divided into a few sizes, each having a standard budget. Drawings are grouped by subject and size (AO, Al, etc.), procurement documentation by value and complexity, etc. 

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