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  2. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    Floor Level Floor Level of an existing or proposed building or concrete pad FN or F/N: flag note, flagnote; find number: 1. Flagnote: A flagnote is a note that is called out in specific spots in the field of the drawing. It is numbered with a stylized flag symbol surrounding the number (or sometimes a delta symbol). A general note applies ...

  3. Invert level - Wikipedia

    en.wikipedia.org/wiki/Invert_level

    Conversely, the obvert level is the highest interior level, and can be considered the "ceiling" level, being the highest level of that sewer. The bottom of the sewer is called the invert from a general resemblance in construction to an "inverted" arch. [2] An inverted arch is a rounded structure with its crown facing in the downward position.

  4. 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 ...

  5. Raised floor - Wikipedia

    en.wikipedia.org/wiki/Raised_floor

    An alternative raised floor application with disposable formworks from job site in Turkey A suction-cup tile lifter has been used to remove a tile.. A raised floor (also raised flooring, access floor(ing), or raised-access computer floor) provides an elevated structural floor above a solid substrate (often a concrete slab) to create a hidden void for the passage of mechanical and electrical ...

  6. Why Sirius XM Holdings Stock Was Falling Today

    www.aol.com/why-sirius-xm-holdings-stock...

    Sirius XM Holdings (NASDAQ: SIRI), the operator of the country's only satellite radio company, provided a disappointing update on its financial performance on Tuesday. It also named a new chief ...

  7. Gift cards that make good last-minute gifts, done and dusted

    www.aol.com/lifestyle/gift-cards-that-make-good...

    Gift her a Soothe gift card so she can book an on-demand massage, facial, hair appointment, nail appointment or other beauty service — right to her door. Appointments are available daily from 8 ...

  8. Donald Trump once threatened to jail Mark Zuckerberg, but ...

    www.aol.com/finance/donald-trump-once-threatened...

    Donald Trump was threatening to send Meta CEO Mark Zuckerberg to prison “for life” if he interfered in the election just a few short months ago—but come Thanksgiving, the bad blood appears ...

  9. Self-leveling concrete - Wikipedia

    en.wikipedia.org/wiki/Self-leveling_concrete

    Self-leveling concrete was invented in 1952 by Axel Karlsson from Sweden. The first product was a combination of wood glue, fine sand and cement with additives. [1] It was called flytspackel, which directly translates to "floating putty". The term self-leveling can be traced back to a patent applied by the company Lafarge in 1997. [2]