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  2. Gatepost - Wikipedia

    en.wikipedia.org/wiki/Gatepost

    They are often made of wood, such as old railway sleepers, telegraph poles or even tree trunks. For a longer 'life' more resilient iron girders or pipes may be used and concrete posts are sometimes employed. The older examples were often made of stone, such as granite, whinstone, sandstone or limestone.

  3. Cast-iron architecture - Wikipedia

    en.wikipedia.org/wiki/Cast-iron_architecture

    Cast iron was also taken up by some architects in the early 19th century where smaller supports or larger spans were required (and where wrought iron was too expensive), notably in the Royal Pavilion in Brighton, designed by John Nash and built between 1816 and 1823, where cast iron columns were used within the walls, as well as cast iron beams ...

  4. Phosphate conversion coating - Wikipedia

    en.wikipedia.org/wiki/Phosphate_conversion_coating

    Phosphate conversion coating is a chemical treatment applied to steel parts that creates a thin adhering layer of iron, zinc, or manganese phosphates to improve corrosion resistance or lubrication or as a foundation for subsequent coatings or painting.

  5. Conservation and restoration of panel paintings - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    High Humidity reduces mechanical damage such as brittle paint but raises the risks of biological organisms, e.g. white efflorescence and green-to-black stains on a panel painting. [12] High Humidity also raises the risks of curving or warping of the wood over time, forcing the paint to flake off.

  6. Iron railing - Wikipedia

    en.wikipedia.org/wiki/Iron_railing

    Designs for decorative railings from 1771. Passers-by look for the phantom railings in Malet Street. An iron railing is a fence made of iron. This may either be wrought iron, which is ductile and durable and may be hammered into elaborate shapes when hot, or the cheaper cast iron, which is of low ductility and quite brittle. Cast iron can also ...

  7. Guard rail - Wikipedia

    en.wikipedia.org/wiki/Guard_rail

    Staircase railings in the Degré du roi, part of the Petit appartement du roi, in the Palace of Versailles, Versailles, France. Guard rails, guardrails, railings or protective guarding, [1] in general, are a boundary feature and may be a means to prevent or deter access to dangerous or off-limits areas while allowing light and visibility in a greater way than a fence.

  8. Casein paint - Wikipedia

    en.wikipedia.org/wiki/Casein_paint

    One of the qualities for which artists value casein paint is that unlike gouache, it dries to an even consistency, making it ideal for murals. Also, it can visually resemble oil painting more than most other water-based paints, and works well as an underpainting. Casein paint loses its solubility with time and exposure and becomes water-resistant.

  9. History of the railway track - Wikipedia

    en.wikipedia.org/wiki/History_of_the_railway_track

    Cast iron strips could be laid on top of timber rails, and the use of such materials probably occurred in 1738, but there are claims that this technology went back to 1716. [ 12 ] In 1767, Ketley ironworks began producing cast iron plates, which were fixed to the top of wooden rails with nails, to provide a more durable running surface.