© 2019 |Published by Scholars Middle East Publishers, Dubai, United Arab Emirates 46 Saudi Journal of Civil Engineering Abbreviated Key Title: Saudi J Civ Eng ISSN 2523-2657 (Print) |ISSN 2523-2231 (Online) Scholars Middle East Publishers, Dubai, United Arab Emirates Journal homepage: http://saudijournals.com/sjce/ Original Research Article The Effect of The Gable Orientation on The Artificial Ventilation Consumption at Residence Houses in Medan Sari Desi Minta Ito Simbolon 1, Nelson M Siahaan 2, Amy Marisa 2 1 Postgraduate student of Architecture Enginnering, North Sumatera Univeristy, Jl. DR. Mansyur, Padang Bulan, Medan Baru, Kota Medan, Sumatera Utara 20153, Indonesia 2 Lecturers of Postgraduate Architecture Enginnering, North Sumatera Univeristy, Jl. DR. Mansyur, Padang Bulan, Medan Baru, Kota Medan, Sumatera Utara 20153, Indonesia *Corresponding author: Sari Desi Minta Ito Simbolon | Received: 27.03.2019 | Accepted: 07.04.2019 | Published: 30.04.2019 DOI:10.21276/sjce.2019.3.2.1 Abstract The aims of the research are to investigate the effect of gable orientation on the artificial ventilation used, and the intensity of artificial ventilation used which is effected by orientation gable. To achieve the aims of the research, mix research method was used in which both qualitative and quantitative research method was used to obtain the more valid, comprehensice and objective findings of the research. The techniques of collecting the data were literature study, observation in which and the instruments of the research used were the data from literature study, questionnaire with likert scale. After the data found, this research showed that the number of orientation of the roof will affect the ability of roof itself to withstand the heat in order not to increase the consumption of artificial artificial excessively based on both the orientation of both ideal and unideal direction at houses laid in Jasari Park Residence Medan. Then, based on a questionnaire using Likert scale, the roof orientation in residential areas shows that North-South and East-West has completely greater intensity in using the artificial ventilation than the roof orientation towards Southeast-Northwest and Southwest- Northeast. This condition occured because this orientation of the roof surface of the building and the sides of the wall are not only higher, and it absolutely reinforce the roofs that are facing in front of the orientation of the sun. Keywords: Gable orientation, gable, residence, artificial ventilation. Copyright @ 2019: This is an open-access article distributed under the terms of the Creative Commons Attribution license which permits unrestricted use, distribution, and reproduction in any medium for non-commercial use (NonCommercial, or CC-BY-NC) provided the original author and source are credited. INTRODUCTION The consumption of electricity in the houses in the tropics definetely reaches up to 40% of the total load needed to cool down the rooms from the accumulation of the indoor heat in which this kind of situation frequently occurs in Medan, Indonesia. Based on the previous reseach, the data showed that 80% of the heat load from houses is not only affected by the design of the walls and roof of a house but it is also affected by other heat sources [1]. It clearly shows that the issue of wall and roof design choices especially artificial ventilation that use building elements can have an impact on the level of the consumption of electrical energy. The excessive use of electricity occurs due to the heat of the room sourced from the roof against the orientation of the sun, so that more electricity is needed to maximize the comfortabale space. Yet, the waste of electricity should be prevented by considering wall and roof design choices [2]. Based on the phenomena above, this research aims to investigate the orientation of the suitable gable used in houses that it absolutely gives an impact on The consumption of electricity in which the case studies taken is in Jasari Park Residence in Medan city located in Air Bersih Street, Medan Denai District Indonesia where at this location there are houses with an average building area with 54 m² whose the roofs oriented to North and South, East and West, Southeast and Northwest and Southwest and Northeast with the same types of houses. LITERATURE REVIEW Particularly, a house is the essential necessary for human being. Yet, the role of houses may depend on the level of fulfillment of human needs themselves. According to Maslow [3] there are 5 levels of the fulfillment human needs visualized through pyramid diagram called as Maslow pyramid that is related to the level of human needs for a house as shown as Figure-1.