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All Journal Teodolita: Media Komunikasi Ilmiah di Bidang teknik RACIC : Rab Construction Research
Puji Harsanto
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Transportation Other

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Journal : RACIC : Rab Construction Research

 1 
ANALISA PARAMETER HIDROGRAF SATUAN SINTETIK METODE NASH DAN SOIL CONSERVATION SERVICE (SCS) Puji Harsanto; Reza Afrah Afifah; Bayu Krisna Wisnulingga; Burhan Barid
Racic : Rab Construction Research Vol 8 No 1 (2023): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v8i1.2999

Abstract

Water construction developments are increasing over time with the aim of preventing floods, raising water levels, and helping water resource management. However, in the planning process, debit data for 20 years is very difficult to obtain. Therefore, there is a Synthetic Unit Hydrograph (SUH) method to help analyze without using rainfall data and only using watershed characteristics for hydrological analysis. In this study, we will analyze the synthetic unit hydrograph parameters using the Nash and Soil Conservation Service (SCS) methods and compare them with data from the Gemawang AWLR in the Code River sub-watershed. A comparison was made to find out which method is suitable for the Code River sub-watershed at the AWLR Gemawang station. The suitability index or R² of the two methods shows results that are close to one or very related. The regression angle of the variation SCS method obtained an angle of 38˚, at the time of rising 36.5˚ and at recession time of 38.6˚. The Nash variation method gets 40.1˚ for one hydrograph data, 40.6˚ for rising time and 43.3˚ for descending time.
ASESMEN RISIKO BENCANA TERHADAP TEBING SUNGAI WINONGO Puji Harsanto; Nazrey Rahario Nugroho; Restu Faizah; Nursetiawan Nursetiawan
Racic : Rab Construction Research Vol 9 No 1 (2024): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v9i1.3811

Abstract

The Winongo River originates in the Opak River and has many potential hazards such as flooding, cold lava floods and riverbank landslides, so a disaster risk analysis is necessary. The research area is located in the headwaters of the river which passes through the villages of Sendangadi, Sinduadi, Trihango, Bener, Tegalrejo and Pakuncen. The method used is semi-quantitative and qualitative, using tabular data and numerical assessment of land use, population and river hydrology. With the AHP (Analytical Hierarchy Process) method which determines the best choice from several supporting data. The method of determining disaster risk by weighting follows the Regulation of the Director General of BNPB Year 2012. A disaster risk assessment using the AHP method obtained a score of 1.1 in Sendangadi Village, 1.6 in Sinduadi Village. Trihanggo has a value of 1.1, Bener has a value of 1.3, Tegalrejo has a value of 1.4, and Pakuncen has a value of 1.5. Sendangadi and Trihango villages have the lowest risk level with the same value of 1.1. From the results of the disaster risk analysis it has been found that in all sub-districts that are flowed by the upstream Winongo River, they have a low level of risk.
Co-Authors Bayu Krisna Wisnulingga Burhan Barid Nazrey Rahario Nugroho Nursetiawan Nursetiawan restu faizah Reza Afrah Afifah