A detail-level description of construction work. IWPs typically describe an amount of work that a foreman and a 10 person crew can perform in a shift over a one to two week period, generally on the order of 100 to 2,000 man hours. The contents of an IWP are similar to that of a CWP but at a more granular level and include a definition of materials, labor, equipment and other constraints required to execute the IWP. The cumulative progress of the IWPs makes up the progress of their parent CWP.