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  2. Sound transmission class - Wikipedia

    en.wikipedia.org/wiki/Sound_transmission_class

    There are many ways to improve the sound transmission class of a partition, though the two most basic principles are adding mass and increasing the overall thickness. In general, the sound transmission class of a double wythe wall (e.g. two 4-inch-thick [100 mm] block walls separated by a 2-inch [51 mm] airspace) is greater than a single wall ...

  3. What's the Actual Difference Between Sheetrock and Drywall? - AOL

    www.aol.com/whats-actual-difference-between...

    3/8-inch drywall: This drywall is also a good choice for curved walls. This thickness is most often used to repair existing drywall that needs patching. This thickness is most often used to repair ...

  4. Drywall - Wikipedia

    en.wikipedia.org/wiki/Drywall

    Various sized cuts of 1 ⁄ 2 in (13 mm) drywall with tools for maintenance and installation . Drywall (also called plasterboard, dry lining, [1] wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate (), with or without additives, typically extruded between thick sheets of ...

  5. Sound reduction index - Wikipedia

    en.wikipedia.org/wiki/Sound_Reduction_Index

    The sound reduction index is used to measure the level of sound insulation provided by a structure such as a wall, window, door, or ventilator. It is defined in the series of international standards ISO 16283 (parts 1-3) and the older ISO 140 (parts 1-14), or the regional or national variants on these standards.

  6. 50 Divisions - Wikipedia

    en.wikipedia.org/wiki/50_Divisions

    PROCUREMENT AND CONTRACTING REQUIREMENTS GROUP: Division 00 — Procurement and Contracting Requirements; SPECIFICATIONS GROUP. General Requirements Subgroup. Division 01 — General Requirements; Facility Construction Subgroup. Division 02 — Existing Conditions; Division 03 — Concrete; Division 04 — Masonry; Division 05 — Metals

  7. Gypsum block - Wikipedia

    en.wikipedia.org/wiki/Gypsum_block

    Gypsum blocks vary in thickness, density and type. In the U.S. gypsum blocks were made in thicknesses of 2, 3, 4 and 6 in (51, 76, 102 and 152 mm). [2] In Europe they are available in thicknesses of 60 mm, 70 mm, 80 mm or 100 mm. In European residential buildings regularly 80 or 100 mm thick gypsum blocks are being used.

  8. 16 Divisions - Wikipedia

    en.wikipedia.org/wiki/16_Divisions

    The 16 Divisions of construction, as defined by the Construction Specifications Institute (CSI)'s MasterFormat, is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the U.S. and Canada.

  9. Lath and plaster - Wikipedia

    en.wikipedia.org/wiki/Lath_and_plaster

    Lath and plaster is a building process used to finish mainly interior dividing walls and ceilings. It consists of narrow strips of wood which are nailed horizontally across the wall studs or ceiling joists and then coated in plaster. The technique derives from an earlier, more primitive process called wattle and daub. [1]

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