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  2. Benjamin Obdyke - Wikipedia

    en.wikipedia.org/wiki/Benjamin_Obdyke

    Benjamin Obdyke Incorporated is a building materials manufacturer based in the Philadelphia suburb of Horsham, Pennsylvania. The company was started by its namesake, Benjamin P. Obdyke in 1868. Benjamin P. Obdyke is credited with creating and manufacturing the first corrugated downspout while the company itself claims patents on three products ...

  3. Rain gutter - Wikipedia

    en.wikipedia.org/wiki/Rain_gutter

    Eaves gutter and downpipe. Decorative lead hopper head dated 1662, Durham Castle. A rain gutter, eavestrough, eaves-shoot or surface water collection channel is a component of a water discharge system for a building. [1] It is necessary to prevent water dripping or flowing off roofs in an uncontrolled manner for several reasons: to prevent it ...

  4. Urban runoff - Wikipedia

    en.wikipedia.org/wiki/Urban_runoff

    Roof runoff contributes high levels of synthetic organic compounds and zinc (from galvanized gutters). Fertilizer use on residential lawns, parks and golf courses is a measurable source of nitrates and phosphorus in urban runoff when fertilizer is improperly applied or when turf is over-fertilized. [3] [5]

  5. Culvert - Wikipedia

    en.wikipedia.org/wiki/Culvert

    A multiple culvert assembly in Italy. Precast concrete box culvert. Large box culvert on Rio Monterroso. A culvert is a structure that channels water past an obstacle or to a subterranean waterway. Typically embedded so as to be surrounded by soil, a culvert may be made from a pipe, reinforced concrete or other material.

  6. Galvanization - Wikipedia

    en.wikipedia.org/wiki/Galvanization

    Galvanization. Galvanized surface with visible spangle. Galvanization (also spelled galvanisation) [1] is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which the parts are coated by submerging them in a bath of hot, molten zinc. [citation needed]

  7. Box gutter - Wikipedia

    en.wikipedia.org/wiki/Box_gutter

    A box gutter, internal gutter, parallel gutter, or trough gutter is a rain gutter on a roof usually rectangular in shape; it may be lined with EPDM rubber, metal, asphalt, or roofing felt, and may be concealed behind a parapet or the eaves, or in a roof valley. [1][2] Box gutters are essentially placed between parallel surfaces, as in a valley ...

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