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A baby gate or stair gate is a protective barrier designed to prevent babies and toddlers from accessing areas of a home that may not be safe for them, such as stairways and kitchens. [2] Baby gates are typically constructed of metal, plastic and/or wood, and can be expanded to fit in a range of doorway widths. They may be designed for use ...
However, these gates are less effective than full platform screen doors in preventing people from intentionally jumping onto the tracks. [14] These gates were first [clarify] in practical use by the Hong Kong MTR on the Disneyland Resort line for the open-air station designs. Most half-height platform edge door designs have taller designs than ...
Nails are made in a great variety of forms for specialized purposes. The most common is a wire nail. [2] Other types of nails include pins, tacks, brads, spikes, and cleats. Nails are typically driven into the workpiece by a hammer or nail gun. A nail holds materials together by friction in the axial direction and shear strength
Bar gates, especially manually operated ones, are often counterweighted to allow easier manual control. [7] Bar gates are frequently paired end to end or closely offset to block traffic in both directions. Some bar gates also have a second arm which hangs 30 to 40 cm below the upper arm when lowered to increase approach visibility.
A stair hall is the stairs, landings, hallways, or other portions of the public hall through which it is necessary to pass when going from the entrance floor to the other floors of a building. Box stairs are stairs built between walls, usually with no support except the wall strings. [4]
Loretto Chapel is best known for its helix-shaped staircase (nicknamed "Miraculous Stair"), which rises 20 feet (6.1 m) to the choir loft while making two full turns, all without the support of a newel or central pole. The staircase is built mostly out of wood and is held together by wooden pegs, with no glue, nails or other hardware used.