Nowhere to go but down. Around the corner is a parapet wall, rather than an outlet, so the only place for the water to go is down the drain.

“Plumber,” from the Latin, for lead, which is the metal which enables waterproof joints, in copper. As can be seen, the valleys, parapets and tower walls at First Presbyterian all conspire to concentrate water into basins which will accumulate and retain very significant volumes during periods of heavy flow. Note the limited size of the internal drains. For this system to function properly, that is, for it to carry the water off of the building without admitting any INTO the building, ALL the flat seamed solder joints must be perfect. Soldering these joints reliably on any degree of roof pitch requires considerable skill and experience. They must not merely look good, but be good. The good spec is “fully soaked” with 60/40 (60% lead, 40% tin) solder. Joseph Jenkins, Inc., of Grove City, PA did this install out of 20 oz. copper.

Bath time. The basin on the left has significant holding capacity.

Roofing and Sheet Metal Contractors