Built Environment Studies

COMPARATIVE STUDY OF CARBON EMISSION AND PRICE ON THE ALTERNATIVES OF BUILDING WALL CONSTRUCTION

Arsyad Azmi, Wirawan Fawaza, Bratha Ariyuda — Thu, 31 Oct 2024 00:00:00 +0700

The Indonesian government wants to meet the demand for housing by increasing housing development. However, the increase in housing development also contributes to a large percentage of carbon emissions. Therefore, it is necessary to evaluate autoclaved aerated concrete (AAC), a commonly used wall material, and precast sandwich panels (PSP), which have low emissions. The research was conducted to determine how the two materials compare prices to meet housing needs and emission reduction goals. The study is carried out by its price to meet the demand target and Life Cycle Assessment (LCA) to meet the emission reduction target. The subject of the study is one of a complex of 40 types of house buildings. Their wall construction cost and transportation cost determine the price. LCA approached the method with a cradle-to-handover framework, which is used to identify the carbon embodiment of a building. The results show that PSP walls cost 53.30% more to build than AAC walls but produce 37.20% less carbon emissions. The highest emissions occur during the production/manufacturing phase. Future studies could adopt a cradle-to-grave LCA framework to provide a more comprehensive assessment.

EXPLORING SPATIAL TRANSFORMATION ON JAVA TRADITIONAL HOUSES BASED ON THE HIERARCHY OF NEEDS

Muhammad Rafli Alrizqi, Harry Kurniawan — Thu, 31 Oct 2024 00:00:00 +0700

Housing is one of the basic human needs that is dynamic and more than just a place to shelter, so changes based on needs are inevitable. In the house, spatial organization often changes so that it transforms, especially in traditional Joglo houses that face pragmatic changes or still follow traditional values. A qualitative research approach was conducted using the observation method, combined with in-depth interviews, and integrated with Maslow's hierarchy of needs theory. Maslow divides the needs into five levels. Therefore, it is essential to understand changes in spatial and household needs. In this study, we found five cases of Joglo houses, spaces used for commercial activities economically tend to come from esteem and self-actualization needs; another five Joglo houses with spaces used as a place for social and cultural activities; based on belonging, esteem needs, and self-actualization; and another two Joglo houses that have spaces transformed and or converted into personal spaces based on fundamental and safety needs. Our findings show that spatial had altered based on user needs in a bottom-up and reciprocal manner. This can be demonstrated by the absence of massive facades and spatial layout changes, which still maintain spaces that are considered essential, such as senthong, gandhok, and pendhapa. Spatial transformation is also influenced by the capabilities and background of Joglo house owners, who mostly have businesses and or come from respected families to maintain the legacy of Joglo houses and make the house a residence and a symbol of prosperity and well-being. In addition, with spatial transformation, Joglo houses can still meet the needs of users/residents to the level of self-actualization. This study offers a new perspective on combining a hierarchy of needs and spatial transformation, specifically in joglo traditional houses.

OPTIMIZING BATIK TOURISM DISTRICT DESIGN BASED ON POLICY ANALYSIS: CASE STUDY OF KAUMAN PEKALONGAN BATIK VILLAGE

Kartiansmara Purnaumbara, Syarifa Khasna — Thu, 31 Oct 2024 00:00:00 +0700

Batik industry, the largest generator of income, has a significant role in the economic development of Pekalongan City. According to data from the Pekalongan City Department of Industry and Labor, there are roughly 863 batik companies in Pekalongan. However, the environmental concerns raised by the industries are equally alarming. Lack of communal batik waste treatment (IPAL) with sufficient requirements causes water contamination, odors, filth, and other pollution problems in some parts of the city. There is also a lack of comprehensive tourism programs from the government that can sustain momentum in the tourism sector. This research focuses on analyzing Pekalongan City Government policies using SWOT analysis to identify vital factors to improve strategies for future optimization. The analysis results are subsequently put within the built environment framework using the design by research method to generate design strategies to improve built environment quality. These strategies were then implemented in the Kauman Batik Tourism Village case study through building arrangements, zoning, circulation arrangements, and proposed policies for community engagement to encourage more sustainable growth.

UNRAVELING THE COMPLEXITY OF PUBLIC TRANSPORT GOVERNANCE IN URBANIZED AREA: CASE STUDY OF YOGYAKARTA URBANIZED AREA

Mutiasari Kurnia Devi, Miming Miharja, Alhilal Furqan — Thu, 31 Oct 2024 00:00:00 +0700

Transport governance has become an increasingly significant aspect of transport research. In urban areas, the institutional problems become more complex since they involve actors across administrative regions, not to mention institutional fragmentation, where actors need to have the capabilities to build good coordination between institutions. In addition, Indonesia currently has weak institutional capacity in public transportation planning and policy. This can hinder the development of effective and efficient public transportation. This paper elaborates on the complexities of public transportation planning in the Yogyakarta Urbanized Area (YUA) by unraveling the distribution of responsibilities and coordination mechanisms across governance levels. To fulfill this objective, we conduct interviews with policy-makers and stakeholders involved in public transport policy-making. Unclear roles, limited financial and human resources, and the lack of a clear institution responsible for public transport arrangements within YUA are constraints to achieving successful public transport planning in YUA. However, YUA has a typical polycentric governance system involving multiple actors in the public transport policy-making process, aggravating the coordination problem in various horizontal and vertical networks between actors.

ADAPTIVE THERMAL COMFORT: A LITERATURE REVIEW

Muhammad Afi Tegar Ramadhan, Nedyomukti Imam Syafii — Thu, 31 Oct 2024 00:00:00 +0700

Adaptive thermal comfort allows users to adapt themselves and their environment to achieve thermal comfort. This research is a literature review of adaptive thermal comfort, which aims to determine comparison to assess the comparison of comfort temperatures and user thermal adaptation behavior from various climatic conditions and ventilation systems. This study found that natural and mixed-mode ventilation rooms were proven to have a wider comfortable temperature range than air conditioning rooms in tropical and non-tropical non-winter climates. The findings revealed the proximity of thermal preferences in tropical and non-tropical non-winter climates in terms of comfort temperature and clothing insulation in natural and mixed-mode ventilation rooms (26.0 ºC and 25.6 ºC, and 0.60 clo and 0.62 clo, respectively). The toughest adaptation is found in winter climates, with high clothing insulation, even when the heater is turned on. Clothing insulation is negatively correlated to operative and comfort temperatures. Through the discovery of wide comfortable temperature ranges in naturally ventilated rooms and the increasing interest in adaptation to windows and fans, air velocity has the potential to be an energy-saving strategy to achieve thermal comfort.