SKY FACTOR OF UNIT BLOCK : Study on light environment Part1

Ichikawa, Hiromichi

doi:10.3130/aijax.423.0_1

Journal of Architecture, Planning and Environmental Engineering (Transactions of AIJ)

1991

DOI: 10.3130/aijax.423.0_1

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SKY FACTOR OF UNIT BLOCK : Study on light environment Part1

Hiromichi Ichikawa

Abstract: In this paper the author shows the details of several problems related to the average sky factor of unit block in an urban space ， These pfoblems are as fotlows ． ( 1 )

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An Analysis of Urban Landscapes With Respect to Solid Angles Based on Computational Geometry Algorithms

Honma¹,

Kurita²,

Suzuki³

2009

Transactions of AIJ

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The solid angle, which is closely related to the sky amount and sky factor, has been commonly used to assess urban landscapes. In this paper, we propose a new algorithm to calculate the solid angles of urban landscapes based on computational geometry. This algorithm enables us to incorporate the complicated landscapes which consist of multiple nonconvex polygons. Furthermore, using the algorithms, we assess the public space near Shibuya Station in terms of solid angles. In the analysis, we describe how advertising billboards disturb our visibility. We also develop the algorithm to calculate the sky amount and the sky factor, and evaluate both indexes.

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An Analysis of Urban Landscapes With Respect to Solid Angles Based on Computational Geometry Algorithms

Honma¹,

Kurita²,

Suzuki³

2009

Transactions of AIJ

View full text Add to dashboard Cite

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Building Shape Caused by Architectural Volume Maximization Under Sky Exposure Criterion Regulation

Aoki¹,

Ohsawa²,

Kirita³

et al. 2010

Transactions of AIJ

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In Japan, the sky exposure criterion regulation has been introduced in 2003. According to the regulation, the rate computed for the proposed building layout has to be greater than the regulated rate determined by the site shape and the road space. First we derive analytical expressions for two types of building sky exposure rates. Then we demonstrate that the sky exposure rate regulation leads to higher buildings, separate buildings, split sites and central placement positions. We also discuss the justification of the other regulation such as height limit regulation and landscape plan.

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SKY FACTOR OF UNIT BLOCK : Study on light environment Part1

Abstract: In this paper the author shows the details of several problems related to the average sky factor of unit block in an urban space ， These pfoblems are as fotlows ． ( 1 )

Cited by 2 publications

References 0 publications

An Analysis of Urban Landscapes With Respect to Solid Angles Based on Computational Geometry Algorithms

An Analysis of Urban Landscapes With Respect to Solid Angles Based on Computational Geometry Algorithms

Building Shape Caused by Architectural Volume Maximization Under Sky Exposure Criterion Regulation

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