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  2. Sound transmission class - Wikipedia

    en.wikipedia.org/wiki/Sound_transmission_class

    In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations. Outside the US, the ISO Sound Reduction Index (SRI) is used. The STC rating very roughly reflects the decibel reduction of noise that a partition can provide. The STC is useful for evaluating annoyance due to speech ...

  3. Sound reduction index - Wikipedia

    en.wikipedia.org/wiki/Sound_Reduction_Index

    The Sound Reduction Index is expressed in decibels (dB). It is the weighted sound reduction index for a partition or single component only. This is a laboratory-only measurement, which uses knowledge of the relative sizes of the rooms in the test suite, and the reverberation time in the receiving room, and the known level of noise which can pass between the rooms in the suite by other routes ...

  4. Noise reduction coefficient - Wikipedia

    en.wikipedia.org/wiki/Noise_reduction_coefficient

    Absorption coefficients used to calculate NRC are commonly determined in reverberation rooms of qualified acoustical laboratory test facilities using samples of the particular materials of specified size (typically 72 square feet [6.7 m 2] in an 8 ft × 9 ft [2.4 m × 2.7 m] configuration) and appropriate mounting.

  5. The best home improvement apps - AOL

    www.aol.com/finance/best-home-improvement-apps...

    RoomScan Pro: RoomScan Pro is a paid app that allows you to use your phone to scan your home and measure the spatial relationship of walls to give you an accurate digital blueprint of your place ...

  6. Floor plan - Wikipedia

    en.wikipedia.org/wiki/Floor_plan

    A floor plan is not a top view or bird's-eye view; it is a measured drawing to scale of the layout of a floor in a building. A top view or bird's-eye view does not show an orthogonally projected plane cut at the typical four foot height above the floor level. A floor plan may show any of the following elements: [3] interior walls and hallways ...

  7. Plasterwork - Wikipedia

    en.wikipedia.org/wiki/Plasterwork

    If a wall is to be smooth and the ceiling textured, typically the wall is done first, then the ceiling after the wall has set. Instead of rebirding the ceiling (which would have been done when the wall was laid on), a clean trowel is held against the wall and its corner is run along the ceiling to "cut it in" and clean the wall at the same time.

  8. This Is the Right Way to Measure Windows for Curtains ... - AOL

    www.aol.com/lifestyle/way-measure-windows...

    The right length for curtains depends on the room and window. Pros explain how to measure windows for curtains, including drapery panels and cafe curtains.

  9. Floor area - Wikipedia

    en.wikipedia.org/wiki/Floor_area

    Gross internal area (GIA) - The floor area contained within the building measured to the internal face of the external walls. Net internal area (NIA) (or Net floor area NFA, or Usable floor area UFA) - The NIA is the GIA less the floor areas taken up by lobbies, enclosed machinery rooms on the roof, stairs and escalators, mechanical and ...