On page 98, Rogo's team decides to implement a release-of-materials schedule. As Bob Donovan notes, "We don't want too much inventory flooding the floor, but we also don't want too little."

The following table shows parts per hour for the heat treat area and the two prior departments which pass work in progress (WIP) to heat treat:

During one eight-hour shift, how much WIP will build up in the Heat-Treat area?

\begin{tabular}{|c|c|} \hline Department & Parts Per Hour \\ \hline Two Steps Prior & 9pph \\ \hline One Step Prior & 8pph \\ \hline Heat Treat & 5pph \\ \hline \end{tabular}