Construction Technologies and Architecture Vol. 18

Abstract: The Matangkuli Sub-district’s urban area situated along the Keureuto river’s downstream are topographically a flood plain area. Flood hazard has affected the area at yearly basis. The Keureuto dam, located at the upper stream of the area, is intended for flood control of the 50 years return period flood (Q_T50). The dam is plan to be operated in year 2025. The impact toward the downstream area should the flood event exceed the controlled flood has yet been investigated. This study is aiming at analyzing flood maps at the downstream of the dam for three scenarios: 1. Mapping the flood events of three selected years, 2016, 2017 and 2022; 2. Mapping the impact of the Q_T50 and Q_T100 considering the flood control of the dam; 3. Mapping the Q_T100 with river interventions. Two stages of analysis are hydrologic analysis and hydraulic simulation. The Peak Over a Threshold (POT) is selected for the design discharge analysis. Discharge data are converted based on water level data from the Automatic Water Level Recorder (AWLR) Station at the sub-catchment outlet. The HEC-RAS and RAS-Mapper is applied for the water profile and flood mapping. Simulating the three flood events confirming the reported inundated area. Considering the flood control of the dam confirming that no flood occurs at the downstream for the Q_T50. The river interventions of floodwall at the downstream for the Q_T100 has reduced 27.6 % of the inundation area.

Abstract: Transportation is a very crucial sector in supporting economic activities and regional development. Typically, the smoothness of transportation movement is influenced by the condition of transportation infrastructure, which is related to the level of accessibility, traffic performance, and road pavement conditions. To facilitate regional development and economic improvement in West Aceh Regency area, there is an interest to assess the condition of road transportation. Therefore, this research aimed to evaluate road connected to activity centers in the interior of West Aceh Regency. Among the 12 sub-districts, only 6 were situated in interior area, specifically sub-district capitals not located on national or provincial roads. Typically, national and provincial roads showed good pavement performance and quality. Also, road transportation connectivity was assessed based on accessibility, traffic performance, and pavement conditions. The data used for this exploration included information on accessibility, traffic volume, road capacity, and road pavement conditions. The result showed that the level of accessibility was currently suboptimal. Consequently, road pavement was classified as damaged, but remained in very good condition in terms of traffic performance.

Abstract: Over time, the increase in population is directly proportional to the increase in water demand, this will cause problems in the future, namely the water crisis. In the Malikussaleh University medical building, clean water distribution planning is the main focus of the research. With the increase in the number of students from year to year, the demand for water is also increasing. To find out how much water is needed for each user of the building. From the results of the calculation analysis, the total water demand per day is 2,910 liters / day. The maximum water demand in the building occurs in period II (08.00-16.00) WIB which is 2,328 liters/8 hours or 0.000080833m3 /s. In this study, it is assisted by the EPANET 2.0 software program, from the results of the EPANET 2.0 software simulation, it shows that the distribution of water flowing through the pipe from the tank to the point of discharge is normal, there are some minor water losses at the intersection / branching of the pipe caused by the friction of water in the pipe, turns and valves. The highest water velocity occurs from the pump point to the tank which is 4.65 m/s.

Abstract: This study examines community participation in the maintenance of the Jeuram irrigation network in Cot Gud Village, Seunagan District, Nagan Raya Regency. The irrigation network plays a crucial role in supporting the agricultural sector, particularly rice farming. However, the physical condition of the Jeuram irrigation network has deteriorated significantly due to lack of maintenance, such as cracks in the channel walls, sediment buildup, and overgrown vegetation obstructing water flow. This research employs a survey method by distributing questionnaires to 87 community respondents and 16 village officials to assess the level of participation in irrigation maintenance. The results indicate that community participation is categorized as high, with a participation rate of 93%, while the participation of village officials is also high at 87.5%. These findings emphasize the importance of community involvement in maintaining the sustainability of the irrigation network, ensuring optimal water flow, and supporting agricultural productivity. The study recommends regular repairs and increasing community awareness of the importance of irrigation maintenance.

Abstract: Agricultural land has a strategic role and function for the agrarian society of Indonesia. This is because many Indonesians depend on the agricultural sector for their livelihoods. In sustainable agricultural development land is the most important natural resource and changes in land use are inevitable because the amount does not increase but the needs always increase. This land use change also occurs in Aceh Province, especially in Nagan Raya District. Therefore, it is necessary to analyze and predict land changes in order to evaluate the suitability of land management, land use planning, reduce potential conflicts in use, and land utilization for the common good in the future. Cellular Automata-Marcov Chain Algorithm (CA-MC) is one way that can be applied to overcome the problem of land use change in Nagan Raya Regency. Land use conversion significantly impacted primary dry land, particularly through plantation expansion. Spatiotemporal analysis using CA-MC models revealed significant shifts in land cover between 2000 and 2040. Dryland forests decreased, while plantation land, settlements, open land, and water bodies increased. The CA-MC model effectively simulated these changes, providing valuable insights for urban planning and management.