Example, tons, but the research has found that using pieces as the measure more closely reflects the effort required to do the work.
SUMMARY OF MATERIAL MANAGEMENT CONDITIONS
The steel erection activity lasted 37 days and required 1,256 work – hours. Work – hours and quantity data were recorded daily and yielded the daily and cumulative productivity (total work – hours divided by total units of output) curves shown in Figs. 2 and 3, respectively. Delays of a day or more where no work – hours were expended are not reflected in the figures. Table 2 contains the raw data.
Three distinct material – related conditions or events occurred during steel erection. The first two floors were constructed during the first 14 working days (see Fig.2). At that time the material supply was exhausted, and the crew was sent to another project. On the last four days (11 – 14), the pace of the work was visibly slowed, largely because there was little or no work available other than alignment and alignment and tightening. The lack of materials interrupted the normal work pattern of the crew and resulted in the crew stetch-