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  2. Gun-Free School Zones Act of 1990 - Wikipedia

    en.wikipedia.org/wiki/Gun-Free_School_Zones_Act...

    Passed the House of Representatives on October 27, 1990 (313–1, ... within a distance of 1,000 feet from the grounds of a public, parochial or private school.

  3. Drug-free school zone - Wikipedia

    en.wikipedia.org/wiki/Drug-free_school_zone

    In one state, New Hampshire, a drug-free school zone is defined as an area inclusive of any property used for school purposes by any publicly funded primary school, whether or not owned by such school, within 1,000 feet of any such property, and within or immediately adjacent to school buses. [5]

  4. Air rights - Wikipedia

    en.wikipedia.org/wiki/Air_rights

    The upper stratum is the space above which ordinary use and enjoyment by the property owner is reasonable, and is loosely defined in the Section 76 Civil Aviation Act 1982 as starting between 500 and 1,000 feet (150 and 300 m) above the roof level of the property.

  5. Fiber to the x - Wikipedia

    en.wikipedia.org/wiki/Fiber_to_the_x

    A schematic illustrating how FTTX (Node, Curb, Building, Home) architectures vary with regard to the distance between the optical fiber and the end user. The building on the left is the central office; the building on the right is one of the buildings served by the central office. Dotted rectangles represent separate living or office spaces ...

  6. Height above mean sea level - Wikipedia

    en.wikipedia.org/wiki/Height_above_mean_sea_level

    Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic measurement periods.

  7. 8 reasons to buy a 1,000-square-foot house - AOL

    www.aol.com/finance/2016-06-13-8-reasons-to-buy...

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  8. Naismith's rule - Wikipedia

    en.wikipedia.org/wiki/Naismith's_rule

    That is, 7.92 units of distance are equivalent to 1 unit of climb. For convenience an 8 to 1 rule can be used. So, for example, if a route is 20 kilometres (12 mi) with 1600 metres of climb (as is the case on leg 1 of the Bob Graham Round , Keswick to Threlkeld), the equivalent flat distance of this route is 20+(1.6×8)=32.8 kilometres (20.4 mi).

  9. Rule of three (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Rule_of_three_(aeronautics)

    In aviation, the rule of three or "3:1 rule of descent" is a rule of thumb that 3 nautical miles (5.6 km) of travel should be allowed for every 1,000 feet (300 m) of descent. [1] [2] For example, a descent from flight level 350 would require approximately 35x3=105 nautical miles.