Rongko, Herawati Toding (2025) Perencanaan Bendung Daerah Irigasi Barammamase Kabupaten Luwu Provinsi Sulawesi Selatan. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
The river plays an important role as the primary source of water for various needs, including agricultural irrigation. Barammamase Village, located in Walenrang District, Luwu Regency, South Sulawesi Province, has so far utilized a free intake system to meet irrigation needs; however, it has not been able to optimally cover the entire rice field area. The purpose of this study is to plan the construction of a permanent weir as the main water source for irrigating 78 hectares of farmland in Barammamase Village. The research data consist of primary and secondary data. Primary data include measurements of the river’s longitudinal and cross sections, while secondary data consist of rainfall data, climatological data, meteorological data, and soil type data. The research method used in the weir design was based on the design flood discharge with a 50-year return period (Q50). The calculation of the design discharge used rainfall data from 2006 to 2018 obtained from Batusitanduk Station, Lamasi-Padangkalua Station, and Rante Damai Station. The average rainfall was calculated using the arithmetic mean method, while the design rainfall was determined using the Gumbel method and the Log Pearson Type III method. The design flood discharge was then calculated using the Nakayasu Hydrograph method. Based on the calculation results, the design flood discharge with a 50-year return period (Q50) was obtained at 107.978 m³/s. The maximum water demand for irrigating 78 hectares was 0.103 m³/s, while the available discharge reached 0,246 m³/s. The flood water level was found at an elevation of +53.69 m. The type of weir used is a rounded crest weir with a height of 1.63 m and a crest elevation of +52.51 m, equipped with a submerged bucket energy dissipator with a bucket radius of 2.5 m, an effective weir width of 35.83 m, and a length of 8.03 m. Based on the stability analysis, the planned weir is capable of withstanding overturning and sliding forces caused by earth pressure and uplift, both under normal water level conditions at the crest and during flood conditions.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||
| Divisions: | Faculty of Engineering > Departement of Civil Engineering | ||||||||
| Depositing User: | HERAWATI TODING RONGKO | ||||||||
| Date Deposited: | 15 Sep 2025 02:40 | ||||||||
| Last Modified: | 15 Sep 2025 02:40 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/43446 |
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