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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Jurnal Teknik Sipil Journal of Engineering and Technological Sciences JURNAL SAINTIS Jurnal Rekayasa Teknik Sipil dan Lingkungan Jurnal Teknologi Lingkungan Lahan Basah
Stefanus Barlian Soeryamassoeka
Universitas Tanjungpura
Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Public Health Transportation

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ANALYSIS OF FLOOD HYDROGRAPH IN THE LANDAK SUB WATERSHED Miranda, Juwita; Soeryamassoeka, SB; Gunarto, Danang
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.67407

Abstract

This research is motivated by the natural flooding disaster in the Landak sub-watershed area, which can be caused by river overflow due to high rain intensity. Flood discharge can be calculated using the Synthetic Unit Hydrograph method if the available data is limited, such as only obtaining rainfall data and watershed characteristics.Several Synthetic Unit Hydrograph (SUH) methodologies, including SUH Snyder, Nakayasu, Soil Conservation Services (SCS), Gama I, ITB, and Limantara, were utilized in this study. The analyzed data included precipitation data and measured discharge data. Rainfall data are analyzed using the homogeneity test, statistical descriptors, and chi-squared to determine the planned flood discharge. Then, continue with the study of rainfall frequency and analysis of rainfall intensity so that the maximal discharge can be analyzed using three SUH methods: HSS Snyder, Nakayasu, and SCS. The analysis of measured release is conducted by statistically analyzing estimated discharge data.The analysis results are then compared to obtain the percentage error between the discharge plan and the minimum measured discharge. The results showed that the HSS Snyder method was selected for analyzing flood discharge in the Landak sub-watershed basin because it has the minimum percentage error from comparing planned release and measured discharge values. Therefore, for the calculation of flood discharge analysis of the Landak sub-watershed basin, the HSS Snyder method is used with the acquisition of flood discharge plans for the return period of 2, 5, 10, 20, 50, and 100 years of 648,880 m3/sec, 896,335 m3/sec, 1025,954 m3/sec, 1132,006 m3/sec, 1252,788 m3/sec, 1335,273 m3/sec.
VALIDATION OF TROPICAL RAINFALL MEASURING MISSION (TRMM) RAINFALL DATA FOR THE KAPUAS HULU DISTRICT AREA Tangkadas, Charles Gonzaga; Soeryamassoeka, SB; Nirmala, Azwa
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.66513

Abstract

Rainfall is a critical element in the hydrological cycle. Therefore, accurate rainfall inputs are essential for reliable hydrological predictions in various water resource analyses. Many areas in the tropics depend on rainfall for multiple needs because rainfall has an essential influence on numerous aspects of human life, especially in water resources planning and management. However, not all areas have rainfall recording stations using manual rain and gauges or automatic rainfall recorders, so rainfall records are rarely complete; this is also the case in Kapuas Hulu District, West Kalimantan Province.This research article presents the results of TRMM satellite rainfall data research in Kapuas Hulu District, with validated rainfall data, 1-day maximum rainfall data, and rainfall amount data. Validation stages are carried out by calibrating, verifying, and correcting rainfall data. As a comparison station (dependent variable) is the BMKG Pangsuma observation station, KPH-06 Nanga Kantuk, KPH-08 Ng. Silat, KPH-09 Jongkong, KPH-13 Tepuai in 1998-2019.The results of the analysis show that the best correlation value on the amount of rainfall data and 1-day maximum rainfall data obtained from Grid 30 TRMM of 0.83 and 0.82 with the observation station is BMKG Pangsuma Station, and then the equation obtained from the analysis results on the grid is used as an equation for correction. The data correction equation for the amount of rainfall is Y = 1.1578 X - 98.5547, and the 1-day maximum rainfall data correction equation is Y = 1.2036 X - 28.4197.
FLOW HYDROGRAPH GENERATION FOR MELAWI SUB-WATERSHED USING THE SNYDER SYNTHETIC UNIT HYDROGRAPH MODEL Muslim, Alfin Islami Ibnu; Soeryamassoeka, S. B.; Nirmala, Azwa
Jurnal Teknik Sipil Vol 24, No 2 (2024): Vol 24, No 2 (2024): JURNAL TEKNIK SIPIL EDISI MEI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i2.69006

Abstract

The study, titled "Flow Hydrograph Generation for Melawi Sub-Watershed Using the Snyder Synthetic Unit Hydrograph Model," investigates the hydrological response of the Melawi Sub-Watershed in West Kalimantan to rainfall events using the Snyder Synthetic Unit Hydrograph Model (SUHM). This model, instrumental in areas with limited hydrological data, is well-suited for the Melawi Sub-Watershed. The analysis uncovers a peak discharge (Qp) of 13.671 m ³/sec with a time to peak (Tp) of 88.905 hours, highlighting the region"™s susceptibility to prolonged rainfall. The model"™s parameters, such as Ct and Cp, are used to generate accurate flow hydrographs, which are essential for flood management. The results show varying design discharges for different return periods (Q2 to Q100), providing critical data for flood risk mitigation and infrastructure planning. This research underscores the SUHM's effectiveness in flood forecasting and sustainable development, aiding in resilient flood management strategies and informed infrastructure design in the Melawi Sub-Watershed. The findings of this study also pave the way for future research in hydrology and flood management.
FLOOD MANAGEMENT STRATEGY IN THE LANDAK SUB-RIVER BASIN USING SWOT ANALYSIS Alfaro, Aldi; Soeryamassoeka, SB; Gunarto, Danang; Umar, Umar; Yulianto, Eko
Jurnal Teknik Sipil Vol 23, No 1 (2023): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v23i1.61790

Abstract

The Landak sub-River Basin is part of the Kapuas River Basin which is drained by the Landak River with an area of approximately 7,921 km2. Flooding in the Landak sub-River Basin occurs every year with the number of cases tending to increase. Flooding in the Landak sub-River Basin inundates about 20 villages, which means that flood-prone areas dominate. The causes of flooding in the Landak sub-River Basin are very complex, basically caused by natural and non-natural factors. Specifically, there are many problems in the Landak sub-River Basin that are thought to trigger flooding such as land use change, decreasing catchment areas, blockages in small rivers, and so on. To identify strategic issues regarding flooding in the Landak sub-River Basin, a Focus Group Discussion (FGD) was conducted which was attended by several resource persons who were credible with the subject matter and an AHP analysis was conducted first to determine the priority scale of flood management in the Landak sub-River Basin. The result of determining the priority scale of flood management in the Landak sub-River Basin is the strengthening and implementation of regulations. The resulting strategic issues were subjected to a questionnaire that was assessed by the respondents involved during the FGD. The results obtained from this series of SWOT analyses are the formulation of strategies that are most suitable for the strategic issues of flooding in the Landak sub-River Basin using QSPM analysis, along with the determination of short-term, medium-term and long-term strategies using SFAS analysis.
ANALYSIS OF FLOOD VULNERABILITY LEVELS IN LANDAK REGENCY USING GEOGRAPHIC INFORMATION SYSTEM Yance, Yance; Soeryamassoeka, SB; Nurhayati, Nurhayati
Jurnal Teknik Sipil Vol 24, No 2 (2024): Vol 24, No 2 (2024): JURNAL TEKNIK SIPIL EDISI MEI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i2.78534

Abstract

Law No. 24/2007 defines a disaster as a series of events that threaten and disrupt people's lives caused by natural, non-natural, and human factors, resulting in loss of life, environmental damage, and property loss. Landak Regency is one of the areas in West Kalimantan that is often flooded. Floods in Landak Regency impact people's lives, so they must be minimized. One of the efforts to minimize flooding is by mapping flood vulnerability. Flood vulnerability mapping is one of the early mitigations that utilize technological developments.This article presents the research results that aim to map the level of flood vulnerability in Landak Regency. The mapping was carried out using ArcGIS 10.8 software, and the data used are rainfall data, land use maps, slope, soil type, and land cover.The analysis shows the runoff coefficient rose from 0.16 in 2012 to 0.19 in 2021 due to land use changes converting forests and agriculture to settlements, impacting drainage. Flood vulnerability mapping identified highly vulnerable areas covering 21.41% of Landak Regency, focused near Ngabang, Sebangki, and Mandor, particularly along rivers. Vulnerability in Ngabang District decreased due to upstream spatial control policies, which established it as a protected forest area under regulations. Flood vulnerability assessment against Landak Regency's RTRW revealed flood-prone areas covering 490,097.51 Ha (60.77%), dominated by plantations (303,947.52 Ha), production forests (73,610.58 Ha), and agriculture (47,259.98 Ha). These results highlight the necessity of comprehensive spatial planning to effectively manage flood risks and protect Landak Regency's environment and communities.
ZONING OF FLOOD PRONE AREAS IN SINGKAWANG CITY DUE TO RAINFALL Razi, Fahrul; Soeryamassoeka, SB; Yulianto, Eko
Jurnal Teknik Sipil Vol 23, No 3 (2023): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v23i3.68178

Abstract

Singkawang City is a coastal and hilly city. Flooding incidents have caused considerable material damage, displacement of people, and loss of lives. Floods in Singkawang occur almost yearly. In general, the floods in Singkawang are caused by natural factors, exceptionally high rainfall. Considering the significant impact of floods on the development of Singkawang City, it is necessary to establish flood vulnerability zoning based on rainfall in the city.An analysis is conducted on parameters that influence flood incidents, including the slope of the land, elevation, soil type, land cover, and hydrological analysis of rainfall data to create a flood vulnerability zoning map in Singkawang City. Then, an overlay is performed on the four parameters that affect floods, resulting in a map showing the distribution of inundation due to the maximum planned flood discharge (Q) generated from the hydrological analysis based on rainfall.The flood vulnerability map analysis results based on 4 data parameters that affect flood events obtained that the flood-safe area in Singkawang City covers an area of 14863.97 ha (27.04%). In contrast, areas not prone to floods cover 24571.74 ha (44.70%). Areas vulnerable to floods cover 11476.22 ha (20.87%), and regions highly vulnerable to floods cover 3567.28 ha (6.49%). Based on the results of hydrological analysis based on rainfall, it is obtained that the area of Singkawang City mostly experiences inundation due to the maximum planned flood discharge occurring at a 2-year interval in the Small Semelagi River Zone (353.5 ha), at a 5-year gap in the Small Semelagi River Zone (327.4 hectares), at a 10-year gap in the Selakau River Zone (401.4 ha), at a 20-year interval in the Selakau River Zone (473.1 ha), at a 50-year interval in the Selakau River Zone (545.9 ha), and at a 100-year gap in the Selakau River Zone (617.7 ha).
Study Of Productivity And Costs On The Implementation Method Of Foundation Work Using Precast Concrete Pile As A Substitute To The Use Of Wooden Pile Foundations In Low Rise Building (Housing) Syahrudin, Syahrudin; Safaruddin, Nuh M.; S, Soeryamassoeka B; Erwin, Sutandar
Jurnal Teknik Sipil Vol 22, No 1 (2022): JURNAL TEKNIK SIPIL EDISI JUNI 2022
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v22i1.55158

Abstract

The soil condition in Pontianak City is mostly soft soil and peat soil which causes the low bearing capacity of the soil. Various efforts have been made to increase the bearing capacity of the soil, such as the use of wooden pile (kayu cerucuk). With the limited availability of wooden pile, the use of precast piles is an alternative in increasing the bearing capacity of the soil on the foundations of buildings/housings in Pontianak City. The purpose of this study is to compare the productivity and costs of using a wooden pile foundation measuring 12/15 cm with a length of 9-12 M against the use of a square precast concrete pile foundation measuring 15x15 cm2 with a segment length of 3-4 M at a depth of 12-20 M and a size of 12-20 M. 20x20 cm2 with a segment length of 6 M at a depth of 12-18 M in low-rise buildings in Pontianak City. From the results of the study, it is known that the productivity and average cost of piling per M' in a 2-storey shophouse building with an alternative foundation using 12/15 cm cerucuk piles is 22.3 seconds/m' at a cost of Rp. 17,306.24, precast piles square 15 x 15 cm2 of 111.5 seconds/m' at a cost of Rp. 144,274,439 and precast square piles of 20 x 20 cm2 of 125.7 seconds/m' at a cost of Rp. 291,338,955. In a type 150 house building with an alternative foundation using 12/15 cm wooden piles of 18.05 seconds/m' at a cost of Rp. 17,185.58, precast square piles of 15 x 15 cm2 of 104.67 seconds/m at a cost of Rp. 143,890.04 and 20 x 20 cm2 square precast piles of 94.66 seconds/m' with a cost of Rp. 289,724.234. The cost of foundation work with alternative foundations using precast square piles of 15 x 15 cm2 is the most efficient both from the aspect of driving costs, overall costs and the cost of the unit load carried by the foundation
INFLUENCE OF LAND USE CHANGE ON THE MAGNITUDE OF THE RUNOFF COEFFICIENT IN THE UPPER KAPUAS RIVER BASIN Goewin, Felix Wesley; Soeryamassoeka, Stefanus Barlian; Yulianto, Eko
Jurnal Teknik Sipil Vol 24, No 1 (2024): Vol 24, No 1 (2024): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i1.75238

Abstract

The increase in population in the upper Kapuas Hulu River Basin will also increase the need for land. This increase in land demand can cause land use changes, affecting the runoff coefficient. Based on the reasons above, research was conducted to determine the effect of changes in land use on the magnitude of the runoff coefficient in the upstream part of the Kapuas River Basin from 2012 to 2017 and 2017 to 2022.The runoff coefficient calculation uses the U.S. Forest Service, Hassing, Kodoatie, and Syarief methods. Each method uses different parameters to determine the results. Data processing is carried out using a Geographic Information System (GIS).The analysis and calculations show that the runoff coefficient values obtained in the Upper Kapuas River Basin using the U.S. Forest Service method in 2012, 2017, and 2022 are 0,133, 0,136, and 0,145. The Hassing method results are 0,308, 0,309, and 0,312, and the Kodoatie and Syarief method results are 0,156, 0,167, and 0,173. This value shows that the Upper Kapuas River Basin is in reasonably good condition because the runoff coefficient value is far below 1.
ANALYSIS WATER AVAILABILITY AND WATER BALANCE IN IRRIGATION AREAS RINTAU, DISTRICT SEKAYAM Yuanita, Ezzy; Kartini, Kartini; Soeryamassoeka, S B
Jurnal Teknik Sipil Vol 23, No 1 (2023): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2023
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v23i1.60891

Abstract

Indonesia's population is increasing yearly, which has led to a decrease in water supply in several places, including the Sekayam Sub-district, Sanggau District, and West Kalimantan Province. The Rintau irrigation area (D.I.Rintau), located in Sekayam Sub-district, has a potential size of 528.52 Ha. However, due to land conversion for communities and plantations, its functional area is only 224.94 Ha. In addition to reducing the amount of available land, Rintau irrigation has issues with crops and plants that do not match the water supply of the irrigation system.This research aims to get the most suitable cropping pattern in Rintau irrigation related to water availability. The analysis includes water availability with the Mock Model, NFR analysis, water demand in the retrieval building (DR), and water balance analysis.  According to the analysis results, the maximum mainstay discharge of raw water sources used by Rintau irrigation is 707.512 l/sec, the minimum mainstay discharge is 114.200 l/sec, and the average mainstay discharge is 402.619 l/sec. The most suitable cropping pattern used in Rintau Irrigation is the rice-paddy-cucumber cropping pattern, with a maximum NFR value of 8.146 mm/day or 0.943 lt/sec, and the beginning of the first planting period in the first half of August and starting planting 2 in the first half of December. Thus, the Rice-Paddy-Cucumber cropping pattern can be applied to Rintau irrigation to increase food production. Its management must be pursued using appropriate cropping technology.
CAR WASH WASTEWATER TREATMENT PLANNING USING BIOFILTER Irsan, Robby; Soeryamssoeka, SB
Jurnal Teknik Sipil Vol 22, No 2 (2022): JURNAL TEKNIK SIPIL EDISI DESEMBER 2022
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtst.v22i2.59026

Abstract

 Users of motorized vehicles in the city of Pontianak are growing rapidly. For some people who are very busy washing motorbikes is a tiring thing and usually, some people take their vehicles to the car wash. During this time, motorcycle washing providers directly dispose of their waste into the environment, which causes pollution and environmental damage. The technology used is a waste treatment system based on natural materials (biofilter). The method used in this activity is an experimental method that is needed to determine the feasibility of a simple biofilter based on physical parameters, color, turbidity, and smell. The filter media used are palm fiber, gravel, activated charcoal, bio ball, filter cotton, coarse fiber, silica sand, and gauze. The plan for making WWTP is planned to use four tubs that have dimensions of 46 cm x 31 cm x 28 cm. One processing tank uses a bio ball which utilizes a sticky medium to reduce organic matter. This tub is modified into three chambers, while the second processing tub uses palm fiber, coarse fiber, silica sand, gauze, and gravel to filter out fine particles. The third treatment tank uses zeolite, activated charcoal, filter cotton, and stone to filter out fine particles, and the fourth tub serves to collect the treatment water before being discharged into the drainage. The results of the WWTP planning at Basecamp DGCI Chapter Pontianak have 3 tubs are used as treatment tanks and 1 tub as a water reservoir before being discharged into the drainage.
Co-Authors AA Sudharmawan, AA Abang Alvin Septiady Pratama Akafi, M. Ma'ruf Alfaro, Aldi Alfira, Dhea Apri Ananda Putra Azwa Nirmala Azwa, Nirmala Baihaqi, Reza Barage, Lourdes Meirista Buan, Berloskoni Candra, Diki Danial, Mochammmad Meddy Edwardo Dommy, Bung Nemesio EKO YULIANTO Eko Yulianto Ella Prastika Erlanda Elsa, Mukti Tri Elsy Ivana Clara Ivana Erni Yuniarti Erni Yuniarti Erni, Yuniarti Erwin Sutandar Fahrul Razi Fattah, Fathan Abdul Ferdyansyah, Syarif Muhammad Fikriansyah, Irfan Fikry Putra Ramadhani Fiqih Rahmanto Firjatullah, Muhammad Fitriana Meilasari Fitrianingsih, Yulisa Fung, Nyit Gampo, Edi Goewin, Felix Wesley Gunarto, Danang Haryanda, Andi Fikri Hendri Sutrisno Henny Herawati Herawati, Henny Hui, Sin Iman, Sumantri Indah, Fitriani Meta Irfansyah, Muhammad Irmansyah, Fitri Iwansyah, Iwansyah Julianto, Fidelis Kartini Kartini Kartini Kartini Kembara, Riko Komala, Erwan Kurniadi, Tedi Kurniawan, Muhammad Hafiz Liehan, James Mahendra, Dandy Roffi Manurung, Amos Parulian Meilasari, Fitriana Meirany, J. Meiteza, Shella Mesio, Marsianus Miranda, Juwita Mochammad Meddy Danial Muhammad Azhar Irwansyah Muhammad Sidik Muslim, Alfin Islami Ibnu Nathaniel, Yose Gerard Nauli, Sachika Aurelia Nurhayati Nurhayati Nurhayati Nurhayati Nurul Hidayati Paraya, Mario Igor Pradanapa, Permada Garah Pratama, Andikha Pratama, Ya'Muhammad Erdi Putra, Enggar Jaya R, Hernovianty F Ranate, Chelsea Riandini, Alfi Rifani, Hastami Riyanda Nurcahyo Rizki Purnaini Rizky, Firgenius Robby Irsan Safaruddin, Nuh M. Senoaji, Arif Setiawan, Eric Silalahi, Kevin Aglesio Simanjuntak, Nunut Rialdi Simbolon, Roy Binsar Sahat Maruli Tua Siti Aprilianti Suci Suci, Suci Susanto, Nugroho Adji Sutera, Mahardika Wira Aji Bayu Sutrisno, Hendri Syahrudin Syahrudin, Syahrudin Tangkadas, Charles Gonzaga Teguh, Rahmat Teofano, Enrico Umar Umar Umar Umar Wandi, Thomas yance yance Yuanita, Ezzy Zulfian Zulfian