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IMPLEMENTASI METODE ANALYTICAL HIERARCHY PROCESS DALAM PENGELOLAAN DAERAH ALIRAN SUNGAI Gusta Gunawan
Inersia: Jurnal Teknik Sipil Vol 6, No 1 (2014)
Publisher : Universitas Bengkulu

This study aims to apply the method of Analytical Hierarchy Process (AHP) to prioritize the management of a watershed that can adopt a variety of stakeholder interests to bring into sustainable DAS management model . Priority weighting method using Analytical Hierarchy Process (AHP) developed by Saaty (2008) . Purpose (Goal) is an integrated watershed management that can adopt the interests of various stakeholders . The criteria used are economic, ecological / environmental , and social . Alternative selected are six namely productivity , income, max discharge and min discharge , erosion , and labor . The result of weighting method using AHP have been known that the top priority of the watershed management purpose is to tackle the issue of maximum discharge/flood (0.322) and after that following the issue of productivity (0,239) . Lowest weight in the workforce (0,031) . The amount of weight above reflects the level of interest of the stakeholders involved in watershed management .

IDENTIFIKASI FAKTOR-FAKTOR YANG MEMPENGARUHI KEPUASAN PELANGGAN PDAM DENGAN MENGGUNAKAN UJI STATISTIK (STUDI KASUS : PELANGGAN PDAM-KOTA BENGKULU) Gusta Gunawan; Wawan Kurniawan; Khairul Amri
Inersia: Jurnal Teknik Sipil Vol 5, No 2 (2013)
Publisher : Universitas Bengkulu

The purpose of this study to determine how much the level of customer satisfaction with the services provided by water drinking regional company (PDAM) of Bengkulu City. Customer satisfaction to clean water services, measured in terms of customer perception in the use of clean water, including water pressure, continuity of water, water quality, and service quality. The research was conducted by distributing questionnaires of 100 respondents. Areas studied as a test site is an area which is distributed by PDAM Surabaya unit, which include Distict of Teluk Segara, Distict of Muara Bangkahulu, and Distict of Sungai Serut. Statistical analysis showed that the water quality variables (X2) be a factor greatly influencing the level of customer satisfaction with a coefficient of 0.427 and the water continuity variables (X3) with acoefficient of 0.276. The level of customer satisfaction with the value 2.340, in the category medium level of satisfaction. The conclusion of the research is to increase the level of customer satisfaction so water drinking regional company (PDAM) of Bengkulu City must pay attention to quality and continuity of water.

ANALISIS KEMAMPUAN SALURAN DRAINASE TERHADAP GENANGAN BANJIR DI JALAN GUNUNG BUNGKUK KOTA BENGKULU DENGAN MENGGUNAKAN APLIKASI EPA SWMM 5.1 Hendy Apriyanza; Khairul Amri; Gusta Gunawan
Inersia: Jurnal Teknik Sipil Vol 10, No 2 (2018)
Publisher : Universitas Bengkulu

This study aims to determine the flood discharge plan, discharge the existing channel and analyze the condition of the existing channel and look for alternatives to handling flood inundation at the location of flood inundation. Retrieval of data by measuring the existing channel in the flood inundation location. Calculation of peak discharge uses rational methods for various times of plan return. Rainfall calculation results of the plan that meets the requirements are type 1 Gumbel Method. The results of the research and calculations areknown that the amount of existing channel discharge in seven locations of flood inundation ie left and right Mountain Bambat Road is 0.934 m3 / sec and 3.798 m3 / sec. 2,261 m3 / sec, the left and right Gunung Bungkuk Roads are 0.134 m3 / sec and 0.164 m3 / sec while the flood discharge is 1.897 m3 / sec, Gunung Bungkuk 1 Road is 0.30 m3 / sec while the flood discharge is 0.471 m3 / sec, Gunung Bungkuk Road 4 hunchback of 0.190 m3 / sec while the flooddischarge is 1,336 m3 / sec and Gunung Bungkuk Road is 4 0,173 m3 / sec while the flood discharge is 0,864 m3 / sec and for the drainage of Jalan Gunung Bungkuk is not calculated the channel discharge is due to the channel being closed so that the channel dimension not obtained but for the flood discharge of 2.230 m3 / sec and 0.447 m3 / sec. Thus, it shows that the existing discharge channel on the existing Gunung Bungkuk Hump Mountain Road is unable toaccommodate the planned flood discharge. The alternative to flood inundation is by re-planning drainage channels, channel normalization activities, and improving coordination between the government and the community in maintaining drainage channels.

DELINIASI DAS BERBASIS SISTEM INFORMASI GEOGRAFIS DALAM RANGKA MENDUKUNG PENGELOLAAN DAS TERPADU (Studi Kasus : DAS Manjuto Provinsi Bengkulu-Indonesia) Gusta Gunawan
Inersia: Jurnal Teknik Sipil Vol 3, No 1 (2011)
Publisher : Universitas Bengkulu

Improper management of land-use activities cause the disruption of bio-physical balance in the watershed, resulting in flooding, drought, sedimentation, etcetera. This led to many losses, both in economic and environmental. To reduce the impacts, implementation of integrated and sustainable watershed management is urgently required. This requires efficient and effective implementing agencies. They should have the similar perception regarding their respective authority in managing the watershed. To avoid conflict of interests among the agencies concerned, determining the boundaries and area of watershed based on bio-physical parameters is absolutely indispensable. The purpose of the study is to delineate the boundary and determine the area of Manjuto watershed in Bengkulu Province, Indonesia. The 4-step procedure is applied, comprises DEM conditioning, flow routing, delineation of watershed boundary and determination of watershed area. Extensive calculations performed by considering the topography of the region. The test using transectlines elevation proved that the result is accurate and consistent with the the oretical definition. Afterward, the result is compared to the existing information. The result shows that Manjunto watershed area is 79,581 hectares or 7.4% smaller than the area defined by the Ministry of Public Work and 29.3% largerthan the area defined by the Ministry of Forestry.

ANALISIS KEBUTUHAN AIR IRIGASI MENGGUNAKAN METODE CROPWAT VERSION 8.0 Hanan Shalsabillah; Khairul Amri; Gusta Gunawan
Inersia: Jurnal Teknik Sipil Vol 10, No 2 (2018)
Publisher : Universitas Bengkulu

The Irrigation Area of Air Nipis is located in Regency of South Bengkulu at Bengkulu Province with irrigation area 3.116 Ha. Planning and management of irrigation systems is one of the important steps to determine the irrigation water requirement as a whole. The purpose of this research is aim to analyze the water requirement to get value prediction of minimum and maximum irrigation water requirement in irrigation area of Air Nipis using the CROPWAT Version 8.0 method. Irrigation water requirements obtained from CROPWAT Version 8.0 are based on climate data, soil data and plants.The parameters that were reference plant evapotranspiration, effective rainfall, soil treatment, soil data, and plants. The results of the research showed that the maximum irrigation requirement for calculation using CROPWAT 8.0 software occurred in the first 10 days of December (14,49 m3/sec), while the minimum irrigation water requirements for CROPWAT 8.0 occurs in mid to end March (0,04 m3/sec).

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