Heavens rate

The heavens rate (てんくうりつ) means a solid angle projection rate to occupy of the heavens in a building design mainly. I show it how long the heavens are anticipated from a certain point, and state, 0% that 100% "expect the heavens from all directions" are "the states that it was blocked all up the heavens". In Building Standard Act, it became the positioning called one factor of the limit for the three-dimensional shape of the building, but this was included as a relaxation condition of the restriction of the oblique line in Building Standard Act revision in 2002. It becomes the relaxation condition there to be able to secure same class above-mentioned heavens rate around a building with a building built within the restriction of the oblique line.

Heavens figure is the thing which mapped the heavens with respect for the calculation of the heavens rate concentrically. This becomes equal to the photograph which photographed the heavens with a fisheye lens. In addition, in the psychology-like approach of the environmental engineering to architecture, the heavens rate is used for an index to express a feeling of of the space opening and an occlude feeling quantitatively.

Process

The buildings which cut off the part facing the road to clear conventional restriction of the oblique line are seen a lot. It was a shape "born by the law" exclusively without this being named "a slant cut", and being tied to the improvement of livability and the design directly. In addition, it was apt to be in the direction to design the building which was マッシブ after all without the latter being built for restriction of the oblique line even if "the building which was expensive in slim" could find a feeling of neighboring opening, the sunshine, the ventilation than "a building low thickly".

Therefore it is the concept of the heavens rate in line with the fact more that appeared as a new limit in unison with a sense. The calculation of the heavens rate was difficult whereas a calculation was easy for the restriction of the oblique line and could examine it only in an elevation and was approximately impossible by a ruler and the hand calculation of the pencil. However, it was cheap, and a computer and the software which it was easy to use spread, and it became realistic to use heavens rate for an index. Heavens rate calculation programs spread as the CAD (JWW) with the heavens rate calculation function, Extensions to old CAD or independent application widely now.

However, a sense of incongruity that the building which "there is too much volume" sensuously by using the confusion by the building which is not built being built in the neighborhood suddenly, the heavens rate is built may produce it in before.

In addition, the concrete modi operandi is written down to [1] about "some enforcement of the law to revise a part of the Building Standard Act" as technical advice addressed to each prefectural governor (from December 27, 2002 country house street 110th) by Ministry of Land, Infrastructure and Transport house chief of the bureau.

Allied item

• Light regulation
• Total planning system
• Floor area ratio
• Sr

Outside link

• Commentary page by the heavens rate system summary - NPO corporation "meeting of the heavens"

This item is an unfinished item in conjunction with a building, engineering works. I demand the cooperator who corrects it, and corrects this item (a project: architecture /Portal: architecture).

It is acquired by "https://ja.wikipedia.org/w/index.php?title= heavens rate &oldid=50727005"

This article is taken from the Japanese Wikipedia Heavens rate

This article is distributed by cc-by-sa or GFDL license in accordance with the provisions of Wikipedia.

Wikipedia and Tranpedia does not guarantee the accuracy of this document. See our disclaimer for more information.

In addition, Tranpedia is simply not responsible for any show is only by translating the writings of foreign licenses that are compatible with CC-BY-SA license information.