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Copper is a good choice for gutters and downspouts because it makes strong leak-proof joints. Gutters and downspouts made with copper are expected to outlast other metal materials and plastics. Even in corrosion-prone seacoast environments or in areas with acid rain or smog, copper gutters and downspouts can provide 50 years or more of service ...
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.
The joint is then heated, typically by using a propane or MAPP gas torch, although electrically heated soldering tools are sometimes used. Once the fitting and pipe have reached sufficient temperature, solder is applied to the heated joint, and the molten solder is drawn into the joint by capillary action as the flux vaporizes. "Sweating" is a ...
Temperature changes were blamed for the joint failure on the pipeline. [219] December 16 – Military police at Marine Corps Base Quantico discovered fuel oil leaking into the Potomac River, near Chopawamsic Island. A leaking Plantation Pipeline 12 inch pipeline was the source, spilling between 5,000 and 10,000 gallons of fuel oil. [220]
There were used on domestic properties in the 1950s and 1960s, as a replacement for cast iron gutters when there was a shortage of steel and surplus of concrete. [citation needed] They were discredited after differential movement was found to open joints and allow damp to penetrate, but can be fitted with an aluminium and bitumastic liner. [32]
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Groundwater entering sanitary sewers through defective pipe joints and broken pipes is called infiltration. [4] Pipes may leak because of careless installation; they may also be damaged after installation by differential ground movement, heavy vehicle traffic on roadways above the sewer, careless construction practices in nearby trenches, or degradation of the sewer pipe materials.
Downspouts are usually vertical and usually extend down to ground level, although may be routed at an angle to avoid architectural features and may discharge onto an intermediate roof. At the bottom of downspout there are typically features to divert discharged water away from the building's foundations to prevent water damage.