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  2. Conservation and restoration of lighthouses - Wikipedia

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

    It is important to allow maximum ventilation, especially in the summer months, to eliminate interior condensation. This ventilation can be achieved through a mounted passive louver system. A protective coating of either paint, stucco, or lime-mortar-wash is typically applied to concrete lighthouses as a layer of defense from external elements. [4]

  3. Ceramic - Wikipedia

    en.wikipedia.org/wiki/Ceramic

    The earliest known mention of the root ceram-is the Mycenaean Greek ke-ra-me-we, workers of ceramic, written in Linear B syllabic script. [6] The word ceramic can be used as an adjective to describe a material, product, or process, or it may be used as a noun, either singular or, more commonly, as the plural noun ceramics. [7]

  4. Polymer concrete - Wikipedia

    en.wikipedia.org/wiki/Polymer_concrete

    Polymer concrete is a type of concrete that uses a polymer to replace lime-type cements as a binder. One specific type is epoxy granite , where the polymer used is exclusively epoxy . In some cases the polymer is used in addition to portland cement to form Polymer Cement Concrete (PCC) or Polymer Modified Concrete (PMC). [ 1 ]

  5. Outgassing - Wikipedia

    en.wikipedia.org/wiki/Outgassing

    Outgassing is a challenge to creating and maintaining clean high-vacuum environments.NASA and ESA maintain lists of materials with low-outgassing properties suitable for use in spacecraft, as outgassing products can condense onto optical elements, thermal radiators, or solar cells and obscure them.

  6. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    Logs were used for water distribution in England close to 500 years ago. US cities began using hollowed logs in the late 1700s through the 1800s. Today, most plumbing supply pipe is made out of steel, copper, and plastic; most waste (also known as "soil") [30] out of steel, copper, plastic, and cast iron. [30]

  7. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

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