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Nurnawaty
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Transportation

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ANALISIS DAYA TAMPUNG SUNGAI BALIASE MENGGUNAKAN DATA HIDROLOGI DAN HIDROLIS itha, Nur Masita; aan ardiansyah; Nurnawaty; Fausiah Latief
Jurnal Teknik Sipil : Rancang Bangun Vol. 9 No. 2 (2023): Oktober 2023
Publisher : Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33506/rb.v9i2.2305

Abstract

Daerah Aliran Sungai (DAS) adalah wilayah daratan yang secara topografis dibatasi oleh pegunungan yang menampung air hujan, menyimpannya, dan menyalurkannya ke laut melalui sungai-sungai besar. Tujuan penelitian ini adalah menganalisis debit banjir rencana Baliasejoki dan menentukan kapasitas penampang Baliasejoki dengan menggunakan perangkat lunak HEC-RAS. Jenis penelitian kuantitatif digunakan sebagai metode penelitian, dan dari hasil analisis hidrologi DAS Baliase disimpulkan bahwa debit banjir yang diperoleh meningkat seiring bertambahnya tanggal lahir yang digunakan. Arus terima tertinggi terjadi pada pukul 08.51. dan debit banjir tertinggi yang diterima HSS Nakayasu adalah Q 200 dengan debit banjir sebesar 1857.8870 m³/s. Dengan HSS Q 200 dari Snyder menjadi 1633.152 m³ pada 24:16. dan HSS untuk ITB dengan Q 200 yaitu 301.1699 m3 dan data debit dari analisa hidrolik dapat dimasukkan ke dalam HEC-RAS untuk simulasi dengan penampang sungai dan STA dengan luapan pada periode ulang 200 tahun adalah 2582.00, 2329, 37, 2076.73. , 98243. , 1571.46, 1318.82, 1066.18, 813.55, 560.91, 308.27, 55.64 dan -197 karena dimensi saluran tidak dapat menampung debit yang keluar, sehingga mengalami luapan air.
Analisis Kapasitas Penampang Sungai untuk Mengidentifikasi Banjir Menggunakan Software HEC-RAS 6.3.1 Ahmad Fajrin; Asrul; Nurnawaty; Indriyanti
Jurnal Karajata Engineering Vol. 4 No. 2 (2024): 2024
Publisher : Fakultas Teknik Universitas Muhammadiyah Parepare

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/karajata.v4i2.3237

Abstract

Floods occur due to a situation where the water flow is not accommodated Banjir, Hec-ras 6.3.1, Sungai. by the riverbed, as a result floods can cause property losses and loss of life. The purpose of this study was to determine the capacity of the Pangkajene River cross-section and identify flood overflows that occurred in the Pangkajene River. The model used in this study is the flow Hec-ras 6.3.1 (River Analysis System (RAS) Center (HEC). The results of the study showed that many river cross-section points experienced overflows and the highest discharge point was at STA 2400 of 254.48 m3/sec and an overflow height of 1.0 m. The main cause is the high intensity of rainfall accompanied by sedimentation deposits in the river which makes the river shallower so that almost every year there is a flood overflow at the research location
Eksperimentasi Peran Serat Alam Pada Tanah Lempung Dalam Upaya Peningkatan Infiltrasi Dan Plastisitas Tanah Nurnawaty; Nanda, Abd Rakhim; Ajeng, Tendri; Fadillah, Intan
Jurnal Karajata Engineering Vol. 5 No. 1 (2025): 2025
Publisher : Fakultas Teknik Universitas Muhammadiyah Parepare

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/karajata.v5i1.3446

Abstract

Clay soil consists of a type with limited load-bearing ability and low shear strength, thus it is essential to enhance the soil's stability, as this is influenced by the moisture level. The amount of water obtained by the soil depends on the soil's ability to absorb and channel the water received from the soil surface to the lower layers. Therefore, alternative materials are needed to improve the properties of the soil. This study aims to determine the effect of adding natural fibers on the infiltration and plasticity of clay soil. This research was a laboratory based testing, where infiltration testing was carried out using channel media and soil stability testing using the Atterbeg method. The addition of natural fibers to clay soil affects the infiltration discharge. The highest infiltration discharge is clay soil with the addition of rice husks and the lowest infiltration discharge is clay soil with a mixture of coconut fiber. Adding rice husks to clay soil can reduce the plastic index number which is 6%.
Identifikasi Sebaran Intrusi Air Laut Melalui Profil Kualitas Air Sumur Di Pantai Barombong Nurnawaty; M. Agusalim; Muh. Nurul Fitrah S; Ranum Indah Putri
Jurnal Karajata Engineering Vol. 5 No. 2 (2025): 2025
Publisher : Fakultas Teknik Universitas Muhammadiyah Parepare

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/karajata.v5i2.3634

Abstract

Rapid development in Makassar City increases the demand for housing, clean water and industry, which encourages massive exploitation of groundwater. If this continues, it could degrade groundwater quality and quantity and trigger seawater intrusion, threatening groundwater availability in the region. The aim of this research is to analyze and identify measurements and values of salinity due to sea water on ground water quality at Barombong Beach. In this research, a research l ocation survey was carried out, sampling stage, sample testing stage, data processing stage, community interview stage. The well water at Barombong Beach has a salinity that is still categorized as fresh to brackish. Well water that has a salinity of <0.5% then the water is categorized as fresh, >0.5-30%, then the water is categorized as brackish and if the water salinity is >40% then the water is detected as salty. From the results of this research calculation, the highest salinity is found in well 15, namely 5% at a distance of 858.76 from the shoreline and the lowest is located at wells 1 and 2, namely 0.2% which is located at a distance of 165.98 m and 201.06 m from the shoreline.
Co-Authors Aan Ardiansyah Ahmad Fajrin Ajeng, Tendri Asrul Fadillah, Intan Fausiah Latief Indriyanti itha, Nur Masita M. Agusalim Muh. Nurul Fitrah S Nanda, Abd Rakhim Ranum Indah Putri