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  2. Electrostatic discharge materials - Wikipedia

    en.wikipedia.org/wiki/Electrostatic_discharge...

    Static Dissipative Anti-Static Insulative: Description Carbon powders and fiber: No initial charge. Provides path for charge to bleed off. Typically black color. No or low initial charge. Prevents discharge to or from human contact Initial charges are suppressed. Typically pink color. Insulators and Base Polymers. Not an ESD material

  3. Glossary of civil engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_civil_engineering

    Also Abrams' water-cement ratio law. A law which states that the strength of a concrete mix is inversely related to the mass ratio of water to cement. As the water content increases, the strength of the concrete decreases. abrasion The process of scuffing, scratching, wearing down, marring, or rubbing away a substance or substrate. It can be intentionally imposed in a controlled process using ...

  4. Antistatic bag - Wikipedia

    en.wikipedia.org/wiki/Antistatic_bag

    Dissipative antistatic bags, as the name suggests, are made of standard polyethylene with a static dissipative coating or layer on the plastic. This prevents buildup of a static charge on the surface of the bag, as it dissipates the charge to ground (i.e., whatever other surface it is touching).

  5. Antistatic device - Wikipedia

    en.wikipedia.org/wiki/Antistatic_device

    An antistatic floor mat or ground mat is one of a number of antistatic devices designed to help eliminate static electricity. It does this by having a controlled low resistance: a metal mat would keep parts grounded but would short out exposed parts; an insulating mat would provide no ground reference and so would not provide grounding.

  6. Antistatic agent - Wikipedia

    en.wikipedia.org/wiki/Antistatic_agent

    An antistatic agent is a compound used for treatment of materials or their surfaces in order to reduce or eliminate buildup of static electricity. Static charge may be generated by the triboelectric effect [1] or by a non-contact process using a high voltage power source. Static charge may be introduced on a surface as part of an in-mold label ...

  7. Double tee - Wikipedia

    en.wikipedia.org/wiki/Double_tee

    The floor systems are mostly built from pre-topped double tees. This system evolved from the earlier use of tee systems where the flanges of the T-beams were connected. The concrete is then poured at the top of the tees during the construction to create the floor surface, hence the process is called field-placed concrete topping.

  8. Damp proofing - Wikipedia

    en.wikipedia.org/wiki/Damp_proofing

    Damp proofing in construction is a type of moisture control applied to building walls and floors to prevent moisture from passing into the interior spaces. Dampness problems are among the most frequent problems encountered in residences.

  9. Mezzanine - Wikipedia

    en.wikipedia.org/wiki/Mezzanine

    A mezzanine (/ ˌ m ɛ z ə ˈ n iː n /; or in Italian, a mezzanino) [1] is an intermediate floor in a building which is partly open to the double-height ceilinged floor below, or which does not extend over the whole floorspace of the building, a loft with non-sloped walls. However, the term is often used loosely for the floor above the ground ...