BUILDING ENVELOPE Meaning and
Definition
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The building envelope refers to the physical barrier that separates the interior environment of a building from the exterior surroundings. It encompasses all of the elements of a structure that protect it from various external elements such as weather, noise, air pollution, and thermal energy fluctuations. The building envelope includes components such as the roof, walls, windows, doors, insulation, and foundation, all of which contribute to maintaining a comfortable and energy-efficient indoor environment.
The primary function of the building envelope is to provide protection and maintain the desired indoor conditions. It acts as a defensive shield, preventing the entry of water, air, or moisture from the outside, while also controlling heat transfer. The envelope's insulation properties help to regulate indoor temperature by minimizing heat loss in cold climates and heat gain in warmer regions, hence reducing the need for excessive heating or cooling.
In addition to functional aspects, the building envelope also plays a vital role in the aesthetics and architectural design of a structure. It contributes to the overall appearance of a building, dictating its style, form, and visual appeal.
Overall, the building envelope serves as an essential structural and environmental component, ensuring that occupants are protected from external elements and providing them with a comfortable and energy-efficient living or working environment.
Etymology of BUILDING ENVELOPE
The word "building envelope" refers to the physical separator between the interior and exterior environments of a structure. The etymology of the term can be understood by analyzing its constituent words:
1. Building: The term "building" originates from the Old English word "byldan" which means "to build" or "to construct". This word dates back to the 12th century and evolved from the Proto-Germanic word "builthaną".
2. Envelope: The word "envelope" has its roots in the Latin word "involūtus", which means "to roll up" or "to wrap around". "Involūtus" is derived from the prefix "in-" (meaning "in" or "on") and the verb "volvere" (meaning "to roll").
