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  2. Slenderness ratio - Wikipedia

    en.wikipedia.org/wiki/Slenderness_ratio

    In architecture, the slenderness ratio, or simply slenderness, is an aspect ratio, the quotient between the height and the width of a building. In structural engineering , slenderness is used to calculate the propensity of a column to buckle .

  3. Headway - Wikipedia

    en.wikipedia.org/wiki/Headway

    Headway is the distance or duration between vehicles in a transit system. The minimum headway is the shortest such distance or time achievable by a system without a reduction in the speed of vehicles. The precise definition varies depending on the application, but it is most commonly measured as the distance from the tip (front end) of one ...

  4. Barometer question - Wikipedia

    en.wikipedia.org/wiki/Barometer_question

    Use Newton's law of gravitation to calculate the radial altitude of both the ground and the roof. The difference will be the height of the building. Tying a piece of string to the barometer, which is as long as the height of the building, and swinging it like a pendulum, and from the swing period, calculate the pendulum length.

  5. Route capacity - Wikipedia

    en.wikipedia.org/wiki/Route_capacity

    In modern times, Punggol metro line in Singapore uses a moving block system to achieve a headway of 90 seconds, so the route capacity is 40 trains per hour. [20] The Moscow Metro achieves 40 trains an hour as well, additionally it has aimed to achieve 50 trains an hour in the future (a train every 72 seconds).

  6. Passengers per hour per direction - Wikipedia

    en.wikipedia.org/wiki/Passengers_per_hour_per...

    Three parallel escalators; the direction of the middle escalator can be changed to double capacity in one direction (↑↑↓ or ↑↓↓).. Many public transport systems handle a high directional flow of passengers— often traveling to work in a city in the morning rush hour and away from the said city in the late afternoon.

  7. Benchmark (surveying) - Wikipedia

    en.wikipedia.org/wiki/Benchmark_(surveying)

    The height of a benchmark is calculated relative to the heights of nearby benchmarks in a network extending from a fundamental benchmark. A fundamental benchmark is a point with a precisely known relationship to the vertical datum of the area, typically mean sea level. The position and height of each benchmark are shown on large-scale maps.

  8. Texas wants to buy surplus border wall parts but U.S ... - AOL

    www.aol.com/texas-wants-buy-surplus-border...

    Surplus border wall material headed for auction in Arizona was blocked by the U.S. government according to Texas officials.

  9. Floor area ratio - Wikipedia

    en.wikipedia.org/wiki/Floor_area_ratio

    Comparison of floor area ratio (FAR) or floor space index (FSI) and building coverage ratio (BCR) Floor area ratio (FAR) is the ratio of a building's total floor area (gross floor area) to the size of the piece of land upon which it is built. It is often used as one of the regulations in city planning along with the building-to-land ratio. [1]