Ordering ventilation system, new racks, and power supplies$/$cables takes only one actual

day of work. The remaining days are the time necessary for the vendors to fill and ship

the order to Brian. So use finish$-$to$-$start lags here. Assume that five days after the start of

the renovation of the data center that the raised floor will be ready for inspection $($a start$-$

to$-$start lag$).$