Amount of warehouse truck doors: Acre surface is approx. 40x40 meter http://metricunitconversion.globefeed.com/Area_Conversion.asp Trailer width: 96 inches (= approx. 2.5 meter) http://drivinglaws.aaa.com/tag/trailer-dimensions/ With a distance between warehouse truck doors of let's say 1.5 meter 40 meter width Acre / (2.5 meter width trailer + 1.5 meter space) = 10 warehouse truck doors.