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  2. Howe Street Stairs - Wikipedia

    en.wikipedia.org/wiki/Howe_Street_Stairs

    The stairs, which begin at Eastlake Avenue, are divided into 13 flights interrupted by landings and streets. They contain 388 steps and are the longest such staircase in the city. [1] A portion of the stairs pass through the I-5 Colonnade, a city park under an elevated section of Interstate 5. They terminate at Howe Street, from which they take ...

  3. Stairs - Wikipedia

    en.wikipedia.org/wiki/Stairs

    The dimensions of a stair, in particular the rise height and going of the steps, should remain the same along the stairs. [14] The following stair dimensions are important: The rise height or rise of each step is measured from the top of one tread to the next. It is not the physical height of the riser; the latter excludes the thickness of the ...

  4. Core (architecture) - Wikipedia

    en.wikipedia.org/wiki/Core_(architecture)

    Simple core arrangement – stairs "wrapping around" elevator shaft. In architecture, a core is a vertical space used for circulation and services. It may also be referred to as a circulation core or service core. A core may include staircases, elevators, electrical cables, water pipes and risers.

  5. Terrace (building) - Wikipedia

    en.wikipedia.org/wiki/Terrace_(building)

    [1] [2] The term often applies to a raised area in front of a monumental building or structure, which is usually reached by a grand staircase and surrounded by a balustrade. [2] A terrace may be supported by an embankment or solid foundation, either natural or man-made. [1] But terraces are always open to the sky and may or may not be paved. [3]

  6. Floor area - Wikipedia

    en.wikipedia.org/wiki/Floor_area

    Hong Kong law Chapter 123F, Building (Planning) Regulations, Regulation 23 sect 3 sub-paragraph (a) defined that: Subject to sub-paragraph (b), for the purposes of regulations 19, 20, 21 and 22, the gross floor area of a building shall be the area contained within the external walls of the building measured at each floor level (including any floor below the level of the ground), together with ...

  7. Perron (staircase) - Wikipedia

    en.wikipedia.org/wiki/Perron_(staircase)

    The Potemkin Stairs in Odesa, Ukraine. In architecture, a perron generally refers to an external stairway to a building. Curl notes three more-specific usages: the platform-landing reached by symmetrical flights of steps leading to the piano nobile of a building; the steps themselves; or the platform base of edifices like a market cross. [1]

  8. Dog-leg (stairs) - Wikipedia

    en.wikipedia.org/wiki/Dog-leg_(stairs)

    A dog-leg staircase A quarter-landing, on a dog-leg staircase, is made into an architectural feature, by the use of arches, vaulting and stained glass. A dog-leg is a configuration of stairs between two floors of a building, often a domestic building, in which a flight of stairs ascends to a quarter-landing before turning at a right angle and continuing upwards. [1]

  9. Smokeproof enclosure - Wikipedia

    en.wikipedia.org/wiki/Smokeproof_enclosure

    [8] [4] Of course, a higher pressure within a stairwell makes it harder to open doors from the building interior to the enclosed vestibules and to the enclosed stairwell. [9] The Life Safety Code requires that the pressure differential across the barrier not be so great as to prevent the door from opening with a force of 30 lbf (133 N ) at the ...

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