French drain was found by Henry French in 1859. French drain is used for managing water around building or home foundation. Good French drain can safe foundation from erosion by water. Without this appliance, after long time using, home foundation can be damage. French drain works by corporate and flowing water into its pipe. Old french drain use clay pipe, but now it’s changed by plastic pipe. However, after long times using, clay pipe will be broken and damage, it cause this French drain doesn’t work. Plastic pipe is more durable. It’s also more withstand with moisture condition than pipe from clay. It’s important to know proven principle how to make a french drain well.