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23 results on '"Lau, Stephen S.Y."'

13. Difficulties in achieving open building in the mass housing in Hong Kong and implication of user participation

Author

Mahtab-uz-Zaman, Q.M. and Lau, Stephen S.Y.

Subjects
Public housing -- Design and construction, Housing development -- Safety and security measures, Tall buildings -- Design and construction, Architecture and design industries
Abstract

Customisation and open building system have been widely discussed in building technology in the Western discourses. These open building systems have been recommended in a built environment where the buildings [...]

Published
2002

16. Preliminary Study of Diffuse Horizontal Illuminance in Hong Kong

Author

Rahim, Ramli, Lau, Stephen S.Y., Baharuddin, Mulyadi, Rosady, and Hidayah, Rahmawati

Subjects
horizontal illuminance, measurement data, sky conditions
Abstract

According to the recent progress of the way of thinking on the visual environment and the change of the energy circumstances, many improved models have proposed for the estimation of the illumination level in interiors. The estimations based on these models proved that the sky illuminance vary in different locations and countries. In order to investigate daylight availability data in low latitude/tropic area which extremely lacking at the present stage, a measurement of daylight and solar radiation was done in Hong Kong. After the records of the data strictly inspected, the data of the diffuse illuminance has been rearranged into a classification based upon the sky conditions of the whole day specified by cloud ratios. Based upon the diffuse horizontal illuminance data gathered in Hong Kong during October 2006 to September 2007, a preliminary study on the values of the horizontal illuminance from the unobstructed sky by the statistical analysis can be proposed.

Published
2009

17. The development of visible sky area as an alternative daylight assessment method for high-rise buildings in high-density urban environments.

Author

Hamzah, Baharuddin and Lau, Stephen S.Y.

Subjects
SKYSCRAPERS, URBAN ecology (Sociology), DAYLIGHT, DWELLINGS, KITCHENS, ROOMS
Abstract

This research aims to develop a new daylight assessment method for high-rise residential buildings located in high-density urban environments. The new visible sky area (VSA) method was developed based on data gathered from an extensive survey of high-rise residential building plans and layouts in Hong Kong and followed by a large number of daylight simulation experiments. The results of simulations showed a very small daylight quantity arriving at windowpane of lower floor level of high-rise residential buildings due to high-obstruction from nearby buildings and also self-obstruction. The new method would guarantee the availability of sky area seen from windowpane in order to provide a good vertical daylight factor (VDF), which has been adopted as a performance-based daylight indicator in Hong Kong. A minimum VSA of 12% and 6% for habitable rooms and kitchens, respectively, is proposed for this situation. [ABSTRACT FROM AUTHOR]

Published
2016
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