A friend of mine is a foreman for a big drywall out fit and his brother is an apprentice for him.. one friday the brother is firetaping above a drop ceiling in an occupied hospital.. big snow storm monday.. comes into work tues and the super , gen forman, hospital bigwigs are steaming.. whats up? here all the sinks in the hospital get a flush of special solution to keep bacteria and the such from building up.. it flushes 2 gallons every hour.. while fire taping a piece of tape fell into the slop sink and covered the drain hole ... 5 gallon sink... 48hrsx2 gallons=alot of clean up.. they had to replace ceiling tiles and some drywall on the floors below.. i sucked to be him that day