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All Journal Jendela ASWAJA Jurnal Basement : Jurnal Teknik Sipil
Ety Fitriyani
Universitas Tidar
Civil Engineering, Building, Construction & Architecture Social Sciences

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Analisis Dampak Sedimentasi Terhadap Kapasitas Tampung Waduk di Jawa Tengah Bina Arumbinang Wajdi; Ety Fitriyani; Hufa Istikomah; Abdul Fida Ismail
Jurnal Jembatan Efektivitas Ilmu dan Akhlak Ahlussunah Wal Jama'ah Vol 6 No 3 (2025): September
Publisher : LPPM UNU CIREBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52188/jendelaaswaja.v6i3.1753

Abstract

Reservoirs play a strategic role in supporting water security, providing raw water, agricultural irrigation, and flood control in Central Java. However, over the past two decades, sedimentation has become one of the most serious problems threatening the sustainability of reservoir functions. The accumulation of sediments on the reservoir bed gradually decreases storage capacity and reduces operational effectiveness, particularly during the dry season when water demand increases. This study aims to comprehensively examine the impact of sedimentation on reservoir storage capacity through literature analysis and secondary case studies. The method employed is a systematic literature review with a comparative analysis approach of several major reservoirs in Central Java, namely Wadaslintang, Kedungombo, Sempor, and Mrica. Secondary data were obtained from previous research, official reports from the River Basin Agency (BBWS), and national scientific publications. The results show that high sedimentation rates have reduced the effective storage capacity of reservoirs by 15-40 percent of their initial capacity. The main contributing factors include soil erosion in catchment areas, land-use changes, and limited maintenance activities. Therefore, an integrated sediment management strategy is required, combining technical measures such as dredging and sabo dams with non-technical approaches based on land conservation and community participation. This study is expected to serve as a reference for sustainable reservoir management planning in Central Java.
The Impact of Infrastructure, Facilities, Utilities, and Overhead Costs on Affordable Housing in Magelang Vivid Lucha Deanggi; Syadza Nabila Yusna; Ety Fitriyani; Listiyani Desy Ratnasari
Jurnal Basement : Jurnal Teknik Sipil Vol. 4 No. 2 (2026): Jurnal Basement : Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/basement.v4i2.27253

Abstract

This study aims to find the impact of infrastructure, facilities, utilities, and overhead costs on affordable housing construction in Magelang. While housing requires adequate infrastructure for livability, these components significantly influence lifecycle and project costs. The objective is to determine the specific percentage impact of these combined costs on the total construction costs of housing units. Secondary data was collected via field observations and interviews at the Asri Permai and Sun Garden 3 complexes. Data were analyzed using a descriptive quantitative cost analysis approach and historical costs were subsequently adjusted for 2025 inflation. Results indicate that these combined costs account for 20.84% and 39.4% of total costs for the respective complexes, averaging 30.12%. The study concludes that infrastructure, facilities, utilities, and overhead constitute 22%-39% of total production costs, with utilities representing the smallest component (2%-4%) and the basic unit cost being the largest (61%-78%).
Co-Authors Abdul Fida Ismail Bina Arumbinang Wajdi Deanggi , Vivid Lucha Hufa Istikomah Listiyani Desy Ratnasari Syadza Nabila Yusna