Coverage measured against what is visible
A specification promising the warehouse floor in a block-stacked building will be judged against a slab that is two thirds covered. Nobody set out to overpromise; the specification was written from an area figure rather than from the way the building is used. Stating the exposed area, and treating covered floor as a rotation item, aligns the arrangement with reality. It also makes the invoice something the site can reconcile.
It also gives the site a lever. If floor condition matters, a change in how blocks are laid out, or a commitment to clear a block before it is restacked, changes what cleaning can achieve. That is a storage decision with a cleaning consequence, and the site can only weigh it up if somebody explains the connection. Sites rarely think of stacking layout as a maintenance decision.
