Daylight in Office Buıldings in Malaysıa: A Pilot Study on Occupants’ Satisfaction and Luminous Environment

By Elina Mohd Husini, Fadli Arabi, Remaz Ossen Dilshan, Mohd Zin Kandar and Norhaini Mat Lajis.

Published by Spaces and Flows: An International Journal of Urban and ExtraUrban Studies

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Lighting is desired for work and there is an impact on occupant satisfaction through their assessment with preferred luminous conditions in a daylit office. This study investigates whether the illuminance levels in office buildings meet the requirements for visual comfort based on existing guidelines through field measurements and surveys in government office buildings. This paper presents the literature that shows an overview of the investigation of daylight distribution, availability and illuminance levels in daylit offices. People’s awareness in luminous environments is captured by obtaining occupant’s feedback. A survey was conducted to find occupants’ responses to daylight availability by using four different open-plan layouts in office buildings. The acceptable illuminance levels are identified from the field study based on data measurement and HDR photo images, field surveys using questionnaires on occupants from different layouts in office buildings. This comparative study of daylight distribution in open-plan offices will provide the findings on preferred office layout and the occupant’s satisfaction through daylighting. It is observed that not all the office buildings have achieved Malaysian Standard 1525:2007 minimum WPI recommendation of 300–500 lux when electric lights are on. More than 60% of occupants, which are of different ages, genders and office activities showed the effect on visual discomfort in the office and the relationship between luminous conditions with activities and attitudes of people towards windows. The resulting key will provide the effects of daylighting on visual comfort, visual health and occupant satisfaction.

Keywords: Daylighting, Occupant Satisfaction, Luminous Environment, Visual Comfort

Spaces and Flows: An International Journal of Urban and ExtraUrban Studies, Volume 3, Issue 1, pp.1-20. Article: Print (Spiral Bound). Article: Electronic (PDF File; 5.842MB).

Ar Elina Mohd Husini

Student, Department of Architecture, Built and Environment, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia

Ar. Elina Mohd Husini is a Professional Architect and Assistance Director in Public Works Department of Malaysia with almost 8 years of experience involving with various government projects. She graduated from Universiti Teknologi Malaysia with Bachelor in Architecture (B. Arch) in year 2000. Her interest is in Sustainable field and her involvement in the collaboration between Public Works Department and Universiti Teknologi Malaysia became a jump start to join research group in providing a new guideline for the architects in designing a comfortable government office building. The government of Malaysia granted her a scholarship in 2012 to further her study in Doctor of Philosophy (Ph.D.) in Architecture in Universiti Teknologi Malaysia. Her area of study was Visual comfort, Occupants’ Satisfaction and Energy Saving in office buildings.

Ar Fadli Arabi

Architect, Department of Post Graduate and Research Study, Faculty of Built Environment, Johor Bahru, Johor, Malaysia

Ar. Fadli Arabi is a Professional Architect and Senior Assistance Director in Public Works Department of Malaysia with almost 12 years of experience involving with various government projects. He graduated from Universiti Sains Malaysia in 1999 with Bachelor of Science in Housing, Building and Planning (B.Sc. HBP), and Bachelor in Architecture (B. Arch) in year 2000. He was involved in the collaboration between Public Works Department and Universiti Teknologi Malaysia to produce a new guideline for the architect in designing a comfortable government office building.The government of Malaysia granted him a scholarship in 2010 to further his study in Doctor of Philosophy (Ph.D.) in Architecture in Universiti Teknologi Malaysia. His area of study was in indoor comfort which focus on visual comfort and daylighting.

Ar. Dr. Remaz Ossen Dilshan

Lecturer, Department of Architecture, Faculty of Built Environment, Johor Bahru, Johor, Malaysia

Ar. Dr. Dilshan Remaz Ossen worked as Chartered Architect in Sri Lanka before serving as a Senior Lecturer at the Faculty of Built Environment Universiti Teknologi Malaysia. His research focus is on Urban Heritage and Conservation, Urban Design & Climatic Studies and on Climate Responsive Architecture. He obtained his Ph.D (Architecture) from Universiti Teknologi Malaysia in 2005 under the Commonwealth Scholarship, awarded by the Public Work Department Malaysia. In 2000, he obtained his professional qualification as a Chartered Architect and Associate membership from Sri Lanka Institute of Architects (AIA, ARB, RIBA III). He completed his B.Sc (BE, 1995) and M.Sc (Architecture, 1998) from University of Moratuwa, Colombo Sri Lanka.

Assoc. Prof. Dr. Mohd Zin Kandar

Faculti of Built Environment, Johor, Malaysia

Assoc. Prof. Dr. Mohd. Zin bin Kandar graduated with B. Sc. (Hons) in Housing, Building & Planning from Universiti Sains Malaysia (USM) in 1984. He obtained B. Arch. (Hons.) in 1988 and Ph.D. (Energy Management and Audit) in 1994 from the University of Liverpool, UK. Currently he taught architecture course at Architecture Department, Faculty of Built Environment Universiti Teknologi Malaysia (UTM) Johore. He was appointed as a Task Manager of the Professional Sector of the Centre for Education and Training in Renewable Energy and Energy Efficiency (CETREE) at USM in the year 2000. Dr. Mohd Zin hold Deputy Director post of CETREE from 2003–2005 He was also involved in several technical committees in Energy Efficiency, Energy Management and Energy Audit at national level namely Malaysia Energy Centre (PTM) and the Energy Commission (ST). He is also currently working on several research projects on Energy Management Program, Daylighting on Government Building, Environmental & Sustainable Architecture.

Norhaini Mat Lajis

Universiti Teknologi MARA, Kelantan

Norhaini Hj Mat Lajis is a lecturer at Universiti Teknologi MARA Kelantan Branch. She has a degree in English from Universiti Sains Malaysia, and a Master’s Degree in Applied Linguistics from Universiti Utara Malaysia. She has over 20 years experience of teaching English, at both secondary and tertiary levels.