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p-Index From 2021 - 2026
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All Journal DIMENSI: Journal of Architecture and Built Environment
Liliany Sigit Arifin
Petra Christian University
Civil Engineering, Building, Construction & Architecture

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Daylight Performance of Fiber Optic Daylighting in Deep Plan Office Room Felicia Ranita Angelica; Liliany Sigit Arifin; Feny Elsiana
DIMENSI (Journal of Architecture and Built Environment) Vol. 50 No. 2 (2023): DECEMBER 2023
Publisher : Institute of Research and Community Outreach, Petra Christian University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/dimensi.50.2.81-98

Abstract

Most buildings have spaces far from the windows that require artificial lighting for illumination throughout the day. In fact, artificial lighting contributes to the second highest electrical energy consumption, especially in educational institutions that require more lighting. One of the appropriate solutions to illuminate areas far from windows is using a fiber optic daylighting system. FOD is used to distribute sunlight into the spaces away from the window. This research tested the lighting levels produced by alternative collector and diffuser models of FOD systems to meet the lighting level standards (lux) in discussion room P. 06. 05. Petra Christian University. This research uses experimental methods under actual weather exposure and simulation with DIALux software. Simulation results show that the room requires 6 collectors and 2 diffusers, arranged centrally and symmetrically. It produces 365 lux and a uniformity ratio of 0.59, which meets the standard. The lighting level data used was at 10:30 AM during partially cloudy conditions.
Exploring the Spatial Potential of Loose Space as Urban Pores in Tunjungan Street Ribka Irena Kartowidjojo; Liliany Sigit Arifin
DIMENSI: Journal of Architecture and Built Environment Vol. 53 No. 1 (2026): JULY 2026
Publisher : Institute of Research and Community Outreach, Petra Christian University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/dimensi.53.1.1-12

Abstract

The phenomenon of urban canyons, characterized by narrow street corridors flanked by dense vertical building masses, has emerged in many city centers, including the Tunjungan (CBD) in Surabaya, resulting in a decline in environmental quality and pedestrian comfort. This study aims to explore the spatial potential of loose spaces, defined as remaining or underutilized urban spaces, as potential urban pores in the context of dense urban canyons. A descriptive qualitative approach was used through direct field observations and visual documentation. Six loose space locations along the Tunjungan corridor were selected and analyzed using six qualitative parameters derived from the theory of loose spaces and urban porosity, adapted to local conditions. The findings indicate that several loose spaces possess spatial characteristics that indicate ecological and social potential, particularly in relation to spatial openness and opportunities for social interaction. This study positions loose spaces as an initial spatial resource that can inform future urban strategies that help address urban canyon conditions in urban areas.
Co-Authors Elsiana, Feny Felicia Ranita Angelica Ribka Irena Kartowidjojo