A rain chain is a decorative downspout for rain water collection or drainage. They originate in Japan where they are common at Buddhist temples as water features. They are typically constructed with a metal such as copper as a chain of cups with holes in their bottoms that allow water to flow down. They produce a slight sound that may be considered pleasing.
LengthA rain chain can extend for a short way from the roof without hitting the ground. Alternatively, it may be connected to the ground. In both cases, they are designed to be heavy and wind resistant.
A traditional Japanese decorative downspout.
Often made from copper as it turns green with time and this is considered attractive.Rain chain designs don't always have cups and may resemble a chain of linked metal.May attract lightning, particularly if grounded.Typically have low capacity and water may flow over them in a relatively uncontrolled fashion in heavy rain.Somewhat high maintenance as they easily collect leaves and other organic materials.
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