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A walk-out basement is any basement that is partially underground but nonetheless allows egress directly outdoors and has floating walls. This can either be through a stairwell leading above ground, or a door directly outside if a portion of the basement is completely at or above grade. Many walk-out basements are also daylight basements.
The useful daylight illuminance calculation is based on three factors—the percentage of time a point is below, between, or above an illuminance value. The range for these factors is typically 100–2,000 lux. Useful daylight illuminance is similar to daylight autonomy but has the added benefit of addressing glare and thermal discomfort. [44]
An English basement is an apartment (flat in UK English) on the lowest floor of a building, generally a townhouse or brownstone, which is partially below and partially above ground level and which has its own entrance, separate from those of the rest of the building.
Belton House.Externally the windows of the servant's semi-basement are visible at ground level. Internally they are too close to the ceiling to have a view. In architecture, a semi-basement, lower ground, lower level, etc. is a floor of a building that is half below ground, rather than entirely such as a true basement or cellar.
Lens systems use reflection and refraction within optical prisms to redirect daylight. Some forms of prism lighting have been used for centuries, and others are 21st-century. Deck prisms were set into the upper decks of ships to light the decks below. Pavement lights were set into floors or sidewalks to let light into a basement below. The ...
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The entry is on a middle floor between two floors. The front door opens directly into what is usually the formal living area, which is typically partially above ground level. Below that may be a small crawl space. The lower level is a finished area partially underground (approximately three feet below grade) and must have an outside entry door.
A basement apartment is an apartment located below street level, underneath another structure—usually an apartment building, but possibly a house or a business. Cities in North America are beginning to recognize these units as a vital source of housing in urban areas and legally define them as an accessory dwelling unit or "ADU".