Ground area required per watt would be less than conventional solar panels.

Modern technology has generally reduced the labour required per train movement.

For those 3 to 5 years old, 35 square feet of space is required per child.

Four deck units are required per bay of bridge.

Other instances used for commercial breaks (eight total required per half):

A minimum of one hour a week is required per activity.

As a rough estimate, the average number of records required per title is 5.

The total number of machine cycles required per card varies depending on the data and programming.

Adjustments are usually only required 2-4 times per year for audio applications.

Thus the time required per stop was reduced from days to hours.