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Analisis Kebutuhan dan Ketersediaan Air Eko Walujodjati; Sulwan Permana; Hadi Nurhuda; Adhitya Surya Pratama; Rika Banowati
Jurnal Konstruksi Vol 20 No 1 (2022): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Pada musim kemarau, Kabupaten Garut mengalami kekurangan air bersih dan air untuk kebutuhan lahan pertanian di beberapa Kecamatan dan Desa. Berdasarkan hasil survey di lokasi Desa Pasawahan Kecamatan Tarogong Kaler tahun 2021, bahwa untuk memenuhi kebutuhan air bersih pada saat musim kemarau sangat sulit. Sedangkan di desa tersebut hanya memanfaatkan tiga mata air diantaranya mata air Citiis, Minong, dan Cikamunding. untuk itu diperlukan analisis kebutuhan dan ketersediaan air bersih untuk jangka waktu sampai dengan tahun 2030. metode penelitian yang dilakukan oleh penulis berupa pendekatan secara kuantitatif. peraturan yang di pakai dalam analisis menggunakan Kriteria Perencanaan Direktorat Jendral Cipta Karya Dinas Perencanaan Umum dalam mempredikasi kebutuhan air bersih sampai 2030. Di Desa Pasawahan Kecamatan Tarogong Kidul Kabupaten Garut. Besarnya kebutuhan air total di Desa Pasawahan Kecamatan Tarogong Kaler adalah 8,268 lt/dt. Ketersediaan air dari sumber Mata air Citiis yang selalu di gunakan karena Mata air Minong dan Cikamunding pada musim kemarau airnya kering, Mata air Citiis masih mampu mencukupi kebutuhan air daerah layanan hingga tahun 2030.Hal ini dibuktikan dengan debit sumber (Qs 11,032 lt/dt) debit kebutuhan (Qb 8,268 lt/dt). Berdasarkan hasil analisis hidrolika jaringan pipa distribusi saat ini masih mampu menyalurkan air dengan debit maksimum samapi tahun 2030. Selain itu diharapkan peran serta masyarakat Desa Pasawahan Kecamatan Tarogong Kaler dalam rangka pemeliharaan jaringan air.

Desain Instalasi Pengolahan Air Dari Mata Air Gunung Guntur Desa Pasawahan Kabupaten Garut Martha Puspa Vaniati; Sulwan Permana; Eko Walujodjati
Innovative: Journal Of Social Science Research Vol. 3 No. 2 (2023): Innovative: Journal Of Social Science Research (Special Issue)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v3i2.798

Air merupakan zat yang mutlak bagi setiap makhluk hidup dan kebersihan air adalah syarat utama bagi terjaminnya kesehatan makhluk hidup itu sendiri. Kota modern membutuhkan sistem perencanaan air bersih yang baik, sehingga mampu memenuhi kebutuhan pertumbuhan penduduknya. Pengelolaan sistem penyediaan air bersih yang layak serta memenuhi kebutuhan masyarakat dan aktivitas perkotaan secara keseluruhan akan meningkatkan produktivitas kota dan meningkatkan kesejahteraan masyarakat. Hal ini juga berhubungan dengan peningkatan ekonomi dimana dengan ketersediaan air yang layak dan berkesinambungan diharapkan dapat membuat masyarakat dapat bekerja dengan efektif. Tujuan penelitian ini adalah mendesain unit instalasi air menggunakan SNI 6774-2008. Metode yang digunakan pada perencanaan ini berupa deskriptif. dengan rencana unit pengolahannya berupa: Debit air saluran Intake sebesar 82 l/detik dengan kecepatan 4,66 m/detik, debit air saluran Sedimentasi sebesar 0,0164 l/detik dengan kecepatan aliran 2,45 x 10 m/detik, debit air saluran Filtrasi sebesar 0,027 l/detik dengan kecepatan aliran 3 x 10 m/detik dan untuk hasil Unit Intake dengan panjang 12,3 m, lebar 8 m, kedalaman 3 m, Unit Sedimentasi dengan panjang 5,785 m, lebar 6,55 m, tinggi 3,5 m, dan Unit Filtrasi dengan panjang 4,24 m, lebar 2,12 m, tinggi 3,2 m dengan debit 82 liter/detik untuk masyarakat setempat agar dapat memanfaatkan air lebih baik.

Analisis Pengaruh Tata Guna Lahan terhadap Efektivitas Daerah Irigasi Cipalebuh Agun Gunawar; Sulwan Permana
Jurnal Konstruksi Vol 21 No 2 (2023): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.21-2.1329

Cipaleubuh Irrigation gets water from the Cipaleubuh River for the needs of rice fields and plantations in Pameungpeuk. To determine water availability and effectiveness of irrigation channels. This research was conducted to determine the Cipaleubuh Bend River Discharge and Irrigation Discharge by taking into account current conditions. The research location is Cipaleubuh Dam to Cipaleubuh Irrigation with an area of ”‹”‹1016 ha. The largest river discharge is 5.66 m3/second using the FJ Mock Method, evapotranspiration calculations using 10 years of climatology data and 10 years of rainfall data using the Penman Monteith Method. The Cipalebuh irrigation area with an area of ”‹”‹1,016 hectares requires water withdrawals, water availability is still sufficient from January to June, and scarce from July to October, but water availability is low at the end of the year. reduced capacity. Enough for November and December. Based on the analysis results, the maximum river discharge was 5.66 m3/s in March. A water intake of 1.65 l/sec/ha at the key requires a required water volume of 1016x1.65 = 1676.4 l/sec. Cipaleubuh land use is divided into river areas, plantation areas, gardens, irrigated rice fields, bushes and agricultural land. Fertile land contributes 30.880% compared to 2.017% for river water. However, water needs can be met with DI. Effective Cipaleubuh.

Analisis Siphon Cimanuk Daerah Irigasi Leuwigoong Kabupaten Garut Sulwan Permana; Muthi’ah Hudaedi
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.1410

The Cimanuk Siphon is one of the cross-drainage structures built to convey discharge from an irrigation channel whose path is interrupted by a long-span valley or a river. To date, the Cimanuk Siphon has not yet been operated because its construction has not been completed. The success of an irrigation system can be assessed through the performance of its channels and structures in operation. Therefore, an analysis of irrigation system management and infrastructure is required to optimize water availability and the performance of irrigation channels. This study aims to determine the adequacy of water availability in the upper reaches of the Cimanuk River for distribution to agricultural land, as well as to determine the discharge flowing through the Cimanuk Siphon based on hydraulic calculations, ensuring optimal and efficient water flow. The study was conducted in Cipicung Village, Banyuresmi District, Garut Regency. The Copong Weir, which is a vertical movable weir, functions to irrigate the Leuwigoong Irrigation Area covering 5,313 ha, with a maximum dependable river discharge of 24.47 m³/s, calculated using the NRECA method. The highest evapotranspiration value was recorded in September, reaching 4.21 mm/day, based on the Penman–Monteith method. The maximum net water requirement for rice fields was 1.79 L/s, indicating that water availability from the upper Cimanuk River can meet the irrigation needs of the Leuwigoong area. The maximum discharge flowing through the Cimanuk Siphon was 5,268.34 L/s. The flow velocity at the inlet of the siphon was 0.66 m/s with a total inflow discharge of 5.27 m³/s, while at the outlet, the velocity reached 1.66 m/s with an outflow discharge of 3.52 m³/s. The total energy loss in the siphon was calculated to be 0.39 m. These findings are expected to serve as a basis for evaluating and optimizing the performance of the Cimanuk–Leuwigoong irrigation system to support sustainable water distribution for agricultural purposes.

Analisa Ketersediaan Air pada Embung di Desa Hegarmanah Kabupaten Cianjur Azka Mutsla Fauzan; Sulwan Permana
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.1425

Cianjur Regency has hydrological potential in the form of rivers and beaches. However, there is still a problem of water shortage. One of the areas experiencing this problem is the Karangtengah Subdistrict area in Hegarmanah Village. When the dry season arrives, the available water is not able to meet the needs of the community. Hegarmanah Village itself has a water source from the river and actually already has a clean water network. However, the clean water network is not functioning due to pumping and water availability issues. To overcome the availability of water in the area, it is necessary to build a facility, namely embung. Embung Hegarmanah is an embung built in Cianjur Regency, precisely in Hegarmanah Village. The research conducted this time, calculating the amount of water availability and needs to meet the irrigation needs of Hegarmanah embung. The method used in this research is quantitative method. In finding the amount of water availability and needs, it is necessary to calculate the incoming discharge and outgoing discharge at Embung Hegarmanah. The results of this study found that there was a water shortage in August of 104.3 l / s, with a land area of 32.52 Ha. Water shortages occur because in August the rainfall is low and farmers are processing crops for the planting period.

Perencanaan Distribusi Air di Desa Ciela Kecamatan Bayongbong Rian Hidayatullah; Sulwan Permana
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.1431

Water use is one of the most vital aspects of human life, essential not only for household needs but also for public, economic, and social infrastructure. One such area is Ciela Village, located in Bayongbong District, which is currently facing problems of uneven water distribution. This study aims to design a water distribution network system using EPANET 2.0, analyze population growth data for the next ten years by comparing two projection methods—arithmetic and geometric—and calculate water demand from both domestic and non-domestic sectors based on the Planning Criteria of the Directorate General of Human Settlements, Ministry of Public Works and Housing. Data collection in this study used a descriptive qualitative method, which included population data, topographic maps, and administrative boundaries. Water discharge was measured using a simple method involving a stopwatch, ruler, and a calibrated container with a known volume. The results show that the projected population of Ciela Village in the next ten years will reach 7,091 people. The Cikahuripan spring, which serves as the main water source for the plan, is capable of meeting community needs until 2033, as evidenced by a measured discharge of 6.4 liters/second, while the required discharge for the next ten years is 5.327 liters/second. The proposed distribution network design uses HDPE pipes with a 6-inch diameter, and the selected pump type is a Vertical Multistage Centrifugal Pump CR 10-14, chosen based on the pump head calculation results from EPANET 2.0. The main storage reservoir requires a capacity of 552.268 m3, while the service reservoir requires a capacity of 51.421 m3. Overall, this study demonstrates that the Cikahuripan spring can sustainably support the projected water demand for the next decade and provides a technically sound plan for improving the water distribution system in Ciela Village.

Pemodelan Banjir Di Cimacan Kecamatan Tarogong Kidul Kabupaten Garut Sulwan Permana; Almiansyah Nurdin
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.1485

Cianjur Regency has hydrological potential in the form of rivers and beaches. However, there is still a problem of water shortage. One of the areas experiencing this problem is the Karangtengah Subdistrict area in Hegarmanah Village. When the dry season arrives, the available water is not able to meet the needs of the community. Hegarmanah Village itself has a water source from the river and actually already has a clean water network. However, the clean water network is not functioning due to pumping and water availability issues. To overcome the availability of water in the area, it is necessary to build a facility, namely embung. Embung Hegarmanah is an embung built in Cianjur Regency, precisely in Hegarmanah Village. The research conducted this time, calculating the amount of water availability and needs to meet the irrigation needs of Hegarmanah embung. The method used in this research is quantitative method. In finding the amount of water availability and needs, it is necessary to calculate the incoming discharge and outgoing discharge at Embung Hegarmanah. The results of this study found that there was a water shortage in August of 104.3 l / s, with a land area of 32.52 Ha. Water shortages occur because in August the rainfall is low and farmers are processing crops for the planting period.

Perencanaan Keseimbangan Air pada Embung Bratayudha Siti Yuni Yuningsih; Sulwan Permana
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.1521

Water balance in the planning of Embung Bratayudha is one of the efforts to control flooding when runoff or high water discharge in the rainy season and to meet the needs of the community for the availability of raw water for irrigation. Based on this, research is needed to analyze the water balance planning at Bratayudha Embung, so that the needs and availability of water in the embung will be known. The method used in this research is a quantitative approach by analyzing primary data obtained through field surveys and secondary data obtained from Kepakan Station Post and the Garut Regency Public Works and Spatial Planning Office.The results of the NRECA analysis conducted can be known water availability discharge of 0.3014 m³/s where this discharge is obtained from the mainstay discharge with a probability of 80%, and the water demand discharge of 0.28 m³/s. From the analysis of the K factor that compares the discharge of availability and needs, the amount of 1.048 m³/s is obtained, where if the value of K â‰¥ 1 then the availability of water can be fulfilled, so the water balance of the reservoir is balanced.

Pengaruh Penambahan Serat Sabut Kelapa Pada Kuat Tekan dan Kuat Tarik Belah Beton Self Compacting Concrete Sulwan Permana; Yusri Fisabili Shaffan
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.1535

Previous researchers have tried to find alternative concrete mixtures that are economical and environmentally friendly. One of the alternative additives developed is coconut fiber waste. The purpose of adding coconut fiber is to determine its effect on testing the compressive strength and split tensile strength of SCC (Self Compacting Concrete) concrete with a mixture percentage of 6%, 8%, and 10%. As for the addition of chemical substances, superplasticizer admixture aims to facilitate SCC concrete in achieving a qualified slump flow value. Research method. The research method applied is experimental compressive strength and split tensile strength of concrete with cylindrical shape with a mixture of added materials. The results of compressive strength testing obtained a normal concrete value of 16.30 MPa, then a mixture of 6% coconut fiber with a value of 17.26 MPa increased the normal concrete value by 5.88%, 8% coconut fiber with a value of 15 MPa decreased by 7.98%, and 10% coconut fiber with a value of 6.61 MPa decreased by 59.51%. For the tensile strength test results, obtained normal concrete worth 6.29 MPa then 6% coconut fiber mixture with a value of 7.10 MPa increased against the normal concrete value by 12.88%, 8% coconut fiber mixture concrete with a value of 6.60 MPa increased by 4.93%, and 10% coconut fiber mixture concrete with a value of 3.33 MPa decreased by 47.54%.

Pemodelan Debit Banjir Sungai Cimoyan Kabupaten Serang - Banten Sulwan Permana; Abdal Azziz
Jurnal Konstruksi Vol 23 No 2 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-2.1578

Flooding is defined as the overflow of water in large quantities. It is caused by heavy rainfall, land surfaces being lower than river or sea levels, locations situated in basins surrounded by mountains, and low water absorption capacity. Like many rivers in Indonesia, the Cimoyan River is experiencing severe degradation. Population growth and economic development have led to land-use changes in the watershed (DAS) area. As a result, there has been an increase in peak flood discharge, erosion, landslides, and a decline in baseflow. Additionally, the river faces problems such as waste accumulation, sediment buildup, and human settlement along its banks. Flooding in the Cimoyan River has inundated hundreds of homes in the area, causing significant economic losses including property and infrastructure damage. Downstream communities often suffer crop failures due to the river’s overflow. The purpose of this study is to determine the design flood discharge using the Nakayasu and Snyder synthetic unit hydrograph (HSS) methods for the Cimoyan River. The method used in this study to assess the cross-sectional capacity of the Cimoyan River through HEC-RAS software is a quantitative approach. Thus, the quantitative data were analyzed using statistical techniques. Based on hydrological analysis, the peak flood discharge using the Nakayasu method (Q100) is 813.97 m³/s, occurring at 02:45, while the peak discharge from the Snyder method (Q100) is 484.61 m³/s at 06:29. The cross-sectional capacity of the Cimoyan River, as calculated with HEC-RAS, shows that most sections of the river are safe from overflow.

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