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2. Leader head - Wikipedia

   en.wikipedia.org/wiki/Leader_Head

   Copper Leader Head at Penn's Quadrangle, Philadelphia 1894 Copper Leader at Shofuso Japanese House and Garden in Philadelphia. The purpose of a leader head is to help transfer excess water from the roof onto downspouts, thus preventing the gutters from overflowing and water washing over the walls, which is a common occurrence in areas susceptible to heavy rain cycles.

3. Rain gutter - Wikipedia

   en.wikipedia.org/wiki/Rain_gutter

   The water drains into a gutter that is fed into a downpipe. A flat roof should have a watertight surface with a minimum finished fall of 1 in 80. They can drain internally or to an eaves gutter, which has a minimum 1 in 360 fall towards the downpipe. [11] The pitch of a pitched roof is determined by the construction material of the covering ...

4. Copper in architecture - Wikipedia

   en.wikipedia.org/wiki/Copper_in_architecture

   Hung copper gutters are supported by brass- or copper brackets or hangers, or by brass straps. Copper gutter linings are often built into wood framed supporting structures. Scuppers are used to provide an outlet through parapet walls or gravel stops on flat and built-up roofs to allow drainage of excess water.

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6. 50 Inventions From The Past That Were Amazingly Innovative - AOL

   www.aol.com/98-historical-inventions-were-ahead...

   The hot air and smoke then rose through the clay or tile flues that made up the walls of the building before traveling out through outlets in the roof. In this way, the system could also be used ...

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