Arif Rivianto, Agata Iwan Candra, Mahardi Kamalika Khusna Ali, Gilang Wahyu Kottama, Mokhamat Wildan Prasetyo, Muhamad Rizal Agus Joko Budiawan, Muhammad Rifqi Fatkhur Rohman, Muhammad Sousa Taufani
Tanah memiliki unsur-unsur penting bagi makhluk hidup sebagai tempat tinggal, bahan bangunan dan media tanam. Keanekaragaman sifat-sifat tanah telah dipahami dalam berbagai bidang ilmu. Ketahanan tanah sangat memengaruhi kestabilan dan daya dukung tanah pada bangunan sipil. Sampel tanah diambil dari Desa Sidorejo Kabupaten Nganjuk yang tergolong tanah berpasir bergradasi buruk (SP). Banyak penyelidikan telah dilakukan mengenai sifat fisik dan mekanik tanah dengan memeriksa pemadatan dan kekuatan geser. Namun, masih banyak peneliti yang belum mengetahui perilaku mekanik tanah secara detail mengenai tanah (SP). Uji pemdatan dilakukan menggunakan metode Standard Proctor Test dengan penambahan air pada setiap sampel sebesar 2,5%, dilanjutkan dengan pengujian kuat geser menggunakan metode Direct Shear Test dari sampel pemadatan dengan berat basah maksimum. Penelitian ini bertujuan untuk mengetahui perilaku mekanik tanah pasir bergradasi buruk (SP) terhadap kuat geser. Pengujian kuat geser diperoleh nilai kohesi sebesar 2,0305 kPa dan sudut geser sebesar 28,892°. Berdasarkan hasil penelitian, sifat mekanik tanah (SP) dapat dijadikan acuan untuk konstruksi pada jenis tanah dan klasifikasi tanah yang sama
{"title":"Perilaku Mekanis Tanah Pasir Bergradasi Buruk Menggunakan Uji Pemadatan dan Direct Shear Test","authors":"Arif Rivianto, Agata Iwan Candra, Mahardi Kamalika Khusna Ali, Gilang Wahyu Kottama, Mokhamat Wildan Prasetyo, Muhamad Rizal Agus Joko Budiawan, Muhammad Rifqi Fatkhur Rohman, Muhammad Sousa Taufani","doi":"10.28932/jts.v19i2.6042","DOIUrl":"https://doi.org/10.28932/jts.v19i2.6042","url":null,"abstract":"Tanah memiliki unsur-unsur penting bagi makhluk hidup sebagai tempat tinggal, bahan bangunan dan media tanam. Keanekaragaman sifat-sifat tanah telah dipahami dalam berbagai bidang ilmu. Ketahanan tanah sangat memengaruhi kestabilan dan daya dukung tanah pada bangunan sipil. Sampel tanah diambil dari Desa Sidorejo Kabupaten Nganjuk yang tergolong tanah berpasir bergradasi buruk (SP). Banyak penyelidikan telah dilakukan mengenai sifat fisik dan mekanik tanah dengan memeriksa pemadatan dan kekuatan geser. Namun, masih banyak peneliti yang belum mengetahui perilaku mekanik tanah secara detail mengenai tanah (SP). Uji pemdatan dilakukan menggunakan metode Standard Proctor Test dengan penambahan air pada setiap sampel sebesar 2,5%, dilanjutkan dengan pengujian kuat geser menggunakan metode Direct Shear Test dari sampel pemadatan dengan berat basah maksimum. Penelitian ini bertujuan untuk mengetahui perilaku mekanik tanah pasir bergradasi buruk (SP) terhadap kuat geser. Pengujian kuat geser diperoleh nilai kohesi sebesar 2,0305 kPa dan sudut geser sebesar 28,892°. Berdasarkan hasil penelitian, sifat mekanik tanah (SP) dapat dijadikan acuan untuk konstruksi pada jenis tanah dan klasifikasi tanah yang sama","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134934770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Geopolymer concrete has been the ideal replacement for Ordinary Portland cement concrete in producing green concrete. The binder in geopolymer concrete is a cementitious paste made from amorphous Aluminosilicate and activated by an Alkaline solution. The geopolymerization process is initiated at elevated temperatures. Thus, the curing requires elevated temperatures. This curing method limits the application of geopolymer concrete in the construction industry. In a geopolymer mix, the presence of Calcium ions allows the formation of Calcium Aluminate Silicate and Calcium Silicate Hydrate gels, allowing ambient temperature curing. Therefore, this study investigates the effect of micro lime on the Sugarcane Bagasse Ash-based geopolymer concrete. The micro lime was added to the geopolymer concrete in 1, 3, 5 and 7% by the Sugarcane Bagasse Ash weight. A mix design was based on a Densified Mix Design Algorithm. The tests carried out included compressive strength and water absorption. Ambient curing of the SCBA-based geopolymer concrete was achieved with 1% of the micro lime. The compressive strength increased with the increase of the micro lime, 10N/mm2 at 1%, to 18.25N/mm2 at 7% micro lime. The ambient temperature-cured geopolymer concrete at 3% micro lime had the lowest water absorption rate.
{"title":"Effect of Micro Lime on The Ambient Cured Sugarcane Bagasse Ash-Based Geopolymer Concrete","authors":"Keithy Kamau, Benard Omondi, Janet Oyaro","doi":"10.28932/jts.v19i2.7303","DOIUrl":"https://doi.org/10.28932/jts.v19i2.7303","url":null,"abstract":"Geopolymer concrete has been the ideal replacement for Ordinary Portland cement concrete in producing green concrete. The binder in geopolymer concrete is a cementitious paste made from amorphous Aluminosilicate and activated by an Alkaline solution. The geopolymerization process is initiated at elevated temperatures. Thus, the curing requires elevated temperatures. This curing method limits the application of geopolymer concrete in the construction industry. In a geopolymer mix, the presence of Calcium ions allows the formation of Calcium Aluminate Silicate and Calcium Silicate Hydrate gels, allowing ambient temperature curing. Therefore, this study investigates the effect of micro lime on the Sugarcane Bagasse Ash-based geopolymer concrete. The micro lime was added to the geopolymer concrete in 1, 3, 5 and 7% by the Sugarcane Bagasse Ash weight. A mix design was based on a Densified Mix Design Algorithm. The tests carried out included compressive strength and water absorption. Ambient curing of the SCBA-based geopolymer concrete was achieved with 1% of the micro lime. The compressive strength increased with the increase of the micro lime, 10N/mm2 at 1%, to 18.25N/mm2 at 7% micro lime. The ambient temperature-cured geopolymer concrete at 3% micro lime had the lowest water absorption rate.","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134933762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Beton semen merupakan bahan alternatif dalam konstruksi karena memiliki kekuatan yang tinggi. Beton semen memiliki bahan seperti agregat kasar, agregat halus, semen dan air. Saat produksi semen menghasilkan emisi seperti partikel debu, SO2, gas CO2, dan polutan lainnya. Emisi dapat merusak lingkungan sehingga diperlukan alternatif untuk mengatasinya. Beton geopolimer merupakan beton tanpa bahan semen. Pada penelitian ini, bahan semen diganti dengan abu terbang. Beton ini merupakan salah satu produk ramah lingkungan. Dalam beberapa penelitian, nilai kuat lentur beton geopolimer memiliki hasil yang lebih rendah dibandingkan dengan beton semen. Penelitian ini bertujuan untuk meningkatkan nilai kuat lentur beton geopolimer sehingga setara dengan beton semen menurut SNI 2847:2013 sebesar 0,62√(fc'), dengan penambahan persentase superplasticizer 2% agar membuat beton lebih padat. Benda uji balok menggunakan ukuran 15 × 15 × 53 cm sebanyak 32 buah dengan mix design beton geopolimer yang dibuat dengan molaritas NaOH yang berbeda-beda. Beton diuji kuat tekan dan kuat lenturnya menurut SNI 1974:2011 dan SNI 4431:2011. Hasil penelitian ini adalah rasio kuat lentur beton geopolimer dengan penambahan superplasticizer 2% menghasilkan 0,62√(fc'). Nilai rasio kuat lentur beton geopolimer setara dengan nilai rasio kuat lentur beton berbahan dasar semen dalam SNI 2847:2013 sebesar 0,62√(fc').
{"title":"Rasio Nilai Kuat Lentur pada Beton Geopolimer dengan Penambahan Superplasticizer","authors":"Ester Surya Lie, Rachmansyah Rachmansyah","doi":"10.28932/jts.v19i2.6205","DOIUrl":"https://doi.org/10.28932/jts.v19i2.6205","url":null,"abstract":"Beton semen merupakan bahan alternatif dalam konstruksi karena memiliki kekuatan yang tinggi. Beton semen memiliki bahan seperti agregat kasar, agregat halus, semen dan air. Saat produksi semen menghasilkan emisi seperti partikel debu, SO2, gas CO2, dan polutan lainnya. Emisi dapat merusak lingkungan sehingga diperlukan alternatif untuk mengatasinya. Beton geopolimer merupakan beton tanpa bahan semen. Pada penelitian ini, bahan semen diganti dengan abu terbang. Beton ini merupakan salah satu produk ramah lingkungan. Dalam beberapa penelitian, nilai kuat lentur beton geopolimer memiliki hasil yang lebih rendah dibandingkan dengan beton semen. Penelitian ini bertujuan untuk meningkatkan nilai kuat lentur beton geopolimer sehingga setara dengan beton semen menurut SNI 2847:2013 sebesar 0,62√(fc'), dengan penambahan persentase superplasticizer 2% agar membuat beton lebih padat. Benda uji balok menggunakan ukuran 15 × 15 × 53 cm sebanyak 32 buah dengan mix design beton geopolimer yang dibuat dengan molaritas NaOH yang berbeda-beda. Beton diuji kuat tekan dan kuat lenturnya menurut SNI 1974:2011 dan SNI 4431:2011. Hasil penelitian ini adalah rasio kuat lentur beton geopolimer dengan penambahan superplasticizer 2% menghasilkan 0,62√(fc'). Nilai rasio kuat lentur beton geopolimer setara dengan nilai rasio kuat lentur beton berbahan dasar semen dalam SNI 2847:2013 sebesar 0,62√(fc').","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134933765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dibo Separnu, M. Syahril, Badri Kusuma, D. K. Natakusumah, JurnalTeoretis JurnalTeoretis Jurnal Teoretis, Terapan Bidang Terapan Bidang Terapan Bidang, Rekayasa Sipil
Abstrak. Bandara Internasional Yogyakarta terletak di Kawasan Strategis Nasional, Kabupaten Kulon Progo. Daerah ini secara geologis merupakan daerah dataran rendah yang diapit oleh Sungai Bogowonto dan Sungai Serang yang menyebabkan banjir tahunan pada musim hujan. Sistem pengendalian banjir dikembangkan untuk menjaga kinerja bandara. Penetapan Kawasan Strategis Nasional juga menyebabkan perubahan tata guna lahan di sekitarnya yang dapat mempengaruhi perubahan morfologi sungai. Perubahan morfologi di kedua sungai tersebut telah diidentifikasi berdasarkan pengamatan di lapangan. Berdasarkan pengamatan tersebut dapat diketahui bahwa peningkatan laju sedimentasi merupakan parameter terpenting yang dapat mengubah morfologi kedua sungai tersebut. Pengaruh perubahan morfologi di muara sungai Serang telah dipelajari dengan menggunakan software DELFT3D, sedimentasi di muara sungai Serang telah disimulasikan dengan beberapa skenario antara lain pada saat monsun barat dan monsun timur. Hasil pemodelan menunjukkan bahwa tebal sedimentasi di muara Serang pada kondisi eksisting adalah 3,5 m pada musim barat dengan luas 0,063 ha dan 4,0 m pada musim timur dengan luas 0,437 ha. Kata-kata Kunci: Morfologi, muara, Delft3D Abstract. The Yogyakarta International Airport has located in the National Strategic Area, Kulon Progo regency. This area is geologically a low-lying area flanked by the Bogowonto River and the Serang River which causes annual flooding in the rainy season. A flood control system was developed to maintain airport performance. The determination of the National Strategic Area has also led to changes in the surrounding land use which can affect changes in the morphology of the rivers. The morphological changes in the two rivers have been identified based on field observations. Based on this observation, it can be seen that the increase in sedimentation rate is the most important parameter that can change the morphology of the two rivers. The effect of morphological changes in the Serang river estuary has been studied using DELFT3D software, the sedimentation in the Serang river estuary has been simulated with several scenarios, including during the west monsoon and east monsoon. The modeling results show that the sedimentation thickness in the Serang estuary under existing conditions is 3.5 m in the west season with an area of 0.063 ha and 4.0 m in the east monsoon with an area of 0.437 ha. Keywords: Morphology, estuary, Delft3D
{"title":"The Influence of Sedimentation to The Morfology Change of Serang River Estuary at The National Strategic Area Yogyakarta International Airport (Ksn Yia)","authors":"Dibo Separnu, M. Syahril, Badri Kusuma, D. K. Natakusumah, JurnalTeoretis JurnalTeoretis Jurnal Teoretis, Terapan Bidang Terapan Bidang Terapan Bidang, Rekayasa Sipil","doi":"10.5614/jts.2023.30.2.4","DOIUrl":"https://doi.org/10.5614/jts.2023.30.2.4","url":null,"abstract":"Abstrak. \u0000Bandara Internasional Yogyakarta terletak di Kawasan Strategis Nasional, Kabupaten Kulon Progo. Daerah ini secara geologis merupakan daerah dataran rendah yang diapit oleh Sungai Bogowonto dan Sungai Serang yang menyebabkan banjir tahunan pada musim hujan. Sistem pengendalian banjir dikembangkan untuk menjaga kinerja bandara. Penetapan Kawasan Strategis Nasional juga menyebabkan perubahan tata guna lahan di sekitarnya yang dapat mempengaruhi perubahan morfologi sungai. Perubahan morfologi di kedua sungai tersebut telah diidentifikasi berdasarkan pengamatan di lapangan. Berdasarkan pengamatan tersebut dapat diketahui bahwa peningkatan laju sedimentasi merupakan parameter terpenting yang dapat mengubah morfologi kedua sungai tersebut. Pengaruh perubahan morfologi di muara sungai Serang telah dipelajari dengan menggunakan software DELFT3D, sedimentasi di muara sungai Serang telah disimulasikan dengan beberapa skenario antara lain pada saat monsun barat dan monsun timur. Hasil pemodelan menunjukkan bahwa tebal sedimentasi di muara Serang pada kondisi eksisting adalah 3,5 m pada musim barat dengan luas 0,063 ha dan 4,0 m pada musim timur dengan luas 0,437 ha. \u0000Kata-kata Kunci: Morfologi, muara, Delft3D \u0000Abstract. \u0000The Yogyakarta International Airport has located in the National Strategic Area, Kulon Progo regency. This area is geologically a low-lying area flanked by the Bogowonto River and the Serang River which causes annual flooding in the rainy season. A flood control system was developed to maintain airport performance. The determination of the National Strategic Area has also led to changes in the surrounding land use which can affect changes in the morphology of the rivers. The morphological changes in the two rivers have been identified based on field observations. Based on this observation, it can be seen that the increase in sedimentation rate is the most important parameter that can change the morphology of the two rivers. The effect of morphological changes in the Serang river estuary has been studied using DELFT3D software, the sedimentation in the Serang river estuary has been simulated with several scenarios, including during the west monsoon and east monsoon. The modeling results show that the sedimentation thickness in the Serang estuary under existing conditions is 3.5 m in the west season with an area of 0.063 ha and 4.0 m in the east monsoon with an area of 0.437 ha. \u0000Keywords: Morphology, estuary, Delft3D","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76918166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.26418/jts.v23i3.67769
Septianto Septianto, R.M Rustamaji, Eka Priadi
Various studies have been carried out to improve the parameters of soil mechanical properties. Efforts to improve the mechanical properties of the soil can be carried out in multiple ways, including automated means through compaction and chemical means through the addition of cement base materials. To improve the stability and properties of the subgrade soil, the cement base material that is commonly used is Portland Composite Cement (PCC). In several studies, apart from cement base materials, waste base materials have also been used for stabilization subgrade. This includes using bleached soil residues and rice husk ash as additives to stabilize the soil. The results showed that the use of soil bleaching waste in soil cement stabilization can be used to improve the mechanical properties of the embankment soil and the composition of the soil bleaching waste mixture so that mechanically, it is proven to provide the most effective improvement so that it can be used for road foundation layers made of cement soil. As part of this research, many tests can be carried out on normal and stabilized soils. Various percentages of SBE are 5%, 10%, 15%, 20%. PCC is introduced into the soil at a rate of 8% of the dry weight of the soil.
{"title":"UTILIZATION OF SPENT BLEACHING EARTH WASTE IN SOIL-CEMENT STABILIZATION FOR ROAD FOUNDATION LAYERS IN TERMS OF THE MECHANICAL PROPERTIES OF SOIL","authors":"Septianto Septianto, R.M Rustamaji, Eka Priadi","doi":"10.26418/jts.v23i3.67769","DOIUrl":"https://doi.org/10.26418/jts.v23i3.67769","url":null,"abstract":"Various studies have been carried out to improve the parameters of soil mechanical properties. Efforts to improve the mechanical properties of the soil can be carried out in multiple ways, including automated means through compaction and chemical means through the addition of cement base materials. To improve the stability and properties of the subgrade soil, the cement base material that is commonly used is Portland Composite Cement (PCC). In several studies, apart from cement base materials, waste base materials have also been used for stabilization subgrade. This includes using bleached soil residues and rice husk ash as additives to stabilize the soil. The results showed that the use of soil bleaching waste in soil cement stabilization can be used to improve the mechanical properties of the embankment soil and the composition of the soil bleaching waste mixture so that mechanically, it is proven to provide the most effective improvement so that it can be used for road foundation layers made of cement soil. As part of this research, many tests can be carried out on normal and stabilized soils. Various percentages of SBE are 5%, 10%, 15%, 20%. PCC is introduced into the soil at a rate of 8% of the dry weight of the soil.","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135088151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.26418/jts.v23i3.67407
Juwita Miranda, S. Soeryamassoeka, Danang Gunarto
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.
{"title":"ANALYSIS OF FLOOD HYDROGRAPH IN THE LANDAK SUB WATERSHED","authors":"Juwita Miranda, S. Soeryamassoeka, Danang Gunarto","doi":"10.26418/jts.v23i3.67407","DOIUrl":"https://doi.org/10.26418/jts.v23i3.67407","url":null,"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.","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72381640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.26418/jts.v23i3.67787
Danayanti Azmi Dewi Nusantara, Belia Tatika Arno Dianeka
The Kalibodo sub-watershed is among the Brantas sub-watersheds. The sub-watershed under consideration is situated within the administrative boundaries of Malang Regency. A recurring issue of flooding afflicts the area in question. Floods are influenced by alterations in land utilization, insufficiency of water catchment regions, and elevated precipitation levels. Efforts can be made to address the flooding issue by implementing a hydrological analysis in rain-discharge modeling. The modeling process is conducted using the Hec-HMS software tool. This modeling endeavor aims to acquire hydrological values that closely resemble the observed data. This parameter is a metric for assessing the volume of water flowing through a river. The methodology employed in Soil Conservation Service (SCS) is based on the Curve Number (CN) approach. The method encompasses several parameters: CN, Tlag, Ia, and impervious values. The model calibration process utilizes an input CN value of 77.66 and an impenetrable value of 16.77.Moreover, the analysis of rainfall is conducted using the Thiessen Polygon approach, which considers the influence of rain stations located in Singosari, Sumbergondo, and Karangploso. The present analysis yielded weighting values of 0.457, 0.096, and 0.447 for the Singosari, Sumbergondo, and Karangploso rain stations. The calibration process lost a Nash-Sutcliffe Efficiency (NSE) value of 0.994. Simultaneously, the root mean square error (RMSE) exhibits a value of 0.4. The matter in question is classified as outstanding due to its proximity to an NSE value of 1 and an RMSE value close to 0, indicating a minimal error rate
{"title":"CALIBRATION ANALYSIS OF RAIN DISCHARGE MODELING IN THE KALIBODO WATERSHED USING HEC-HMS","authors":"Danayanti Azmi Dewi Nusantara, Belia Tatika Arno Dianeka","doi":"10.26418/jts.v23i3.67787","DOIUrl":"https://doi.org/10.26418/jts.v23i3.67787","url":null,"abstract":"The Kalibodo sub-watershed is among the Brantas sub-watersheds. The sub-watershed under consideration is situated within the administrative boundaries of Malang Regency. A recurring issue of flooding afflicts the area in question. Floods are influenced by alterations in land utilization, insufficiency of water catchment regions, and elevated precipitation levels. Efforts can be made to address the flooding issue by implementing a hydrological analysis in rain-discharge modeling. The modeling process is conducted using the Hec-HMS software tool. This modeling endeavor aims to acquire hydrological values that closely resemble the observed data. This parameter is a metric for assessing the volume of water flowing through a river. The methodology employed in Soil Conservation Service (SCS) is based on the Curve Number (CN) approach. The method encompasses several parameters: CN, Tlag, Ia, and impervious values. The model calibration process utilizes an input CN value of 77.66 and an impenetrable value of 16.77.Moreover, the analysis of rainfall is conducted using the Thiessen Polygon approach, which considers the influence of rain stations located in Singosari, Sumbergondo, and Karangploso. The present analysis yielded weighting values of 0.457, 0.096, and 0.447 for the Singosari, Sumbergondo, and Karangploso rain stations. The calibration process lost a Nash-Sutcliffe Efficiency (NSE) value of 0.994. Simultaneously, the root mean square error (RMSE) exhibits a value of 0.4. The matter in question is classified as outstanding due to its proximity to an NSE value of 1 and an RMSE value close to 0, indicating a minimal error rate","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135135291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.26418/jts.v23i3.68169
Dhea Alfira, SB Soeryamassoeka, Eko Yulianto
Pontianak City's only regional public water corporation is PERUMDAM Tirta Khatulistiwa. PERUMDAM must measure its SPAM management's success as the Drinking Water Supply System (SPAM) organizer. More is needed if solely financial metrics are used to quantify PERUMDAM's SPAM management success. The BPPSPAM team, BPKP, Perpamsi, and numerous PERUMDAMs developed this performance assessment based on four performance factors: financial, service, operational, and human resources. Each part has various assessment indications to improve assessment accuracy. The performance assessment results are Healthy, Less Healthy, and Sick. PERUMDAM must be healthy to operate SPAM effectively and efficiently through internal solid management to promote drinking water coverage and quality (BPPSPAM, 2014). The company's performance was assessed by PERUMDAM Tirta Khatulistiwa utilizing KEMENDAGRI Number 47 of 1999 metrics. This examination shows that low-value firm indicators still hinder performance.This article presents research on measuring the performance of PERUMDAM Tirta Khatulistiwa Kota Pontianak for the 2021 period through an assessment of the financial aspects, service aspects, operational aspects, and human resource aspects based on the Decree of the Head of the Supporting Agency for the Development of Drinking Water Supply Systems Number 002/KPTS/K-6/IV/2010 concerning Performance Assessment of Services for the Implementation of the Development of Drinking Water Supply Systems in Drinking Water Regional Companies using the Balance Scorecard approach and making the most suitable strategy for the lowest valued assessment indicator based on performance assessment in optimizing PERUMDAM Tirta Khatulistiwa's performance using SWOT analysis.Based on the study, PERUMDAM Tirta Khatulistiwa has a total score of 3.72 for all factors; this means it is a "healthy" PERUMDAM. After studying the best way to improve PERUMDAM Tirta Khatulistiwa, we found that its weaknesses should be fixed so that existing opportunities are used to their fullest. Another way to boost PERUMDAM's performance is to increase technological innovation by using more reliable technology and making apps that fit the needs of every part of PERUMDAM Tirta Khatulistiwa and improve customer service.
{"title":"PERFORMANCE ANALYSIS OF THE PUBLIC COMPANY REGIONAL DRINKING WATER TIRTA KHATULISTIWA IN PONTIANAK CITY","authors":"Dhea Alfira, SB Soeryamassoeka, Eko Yulianto","doi":"10.26418/jts.v23i3.68169","DOIUrl":"https://doi.org/10.26418/jts.v23i3.68169","url":null,"abstract":"Pontianak City's only regional public water corporation is PERUMDAM Tirta Khatulistiwa. PERUMDAM must measure its SPAM management's success as the Drinking Water Supply System (SPAM) organizer. More is needed if solely financial metrics are used to quantify PERUMDAM's SPAM management success. The BPPSPAM team, BPKP, Perpamsi, and numerous PERUMDAMs developed this performance assessment based on four performance factors: financial, service, operational, and human resources. Each part has various assessment indications to improve assessment accuracy. The performance assessment results are Healthy, Less Healthy, and Sick. PERUMDAM must be healthy to operate SPAM effectively and efficiently through internal solid management to promote drinking water coverage and quality (BPPSPAM, 2014). The company's performance was assessed by PERUMDAM Tirta Khatulistiwa utilizing KEMENDAGRI Number 47 of 1999 metrics. This examination shows that low-value firm indicators still hinder performance.This article presents research on measuring the performance of PERUMDAM Tirta Khatulistiwa Kota Pontianak for the 2021 period through an assessment of the financial aspects, service aspects, operational aspects, and human resource aspects based on the Decree of the Head of the Supporting Agency for the Development of Drinking Water Supply Systems Number 002/KPTS/K-6/IV/2010 concerning Performance Assessment of Services for the Implementation of the Development of Drinking Water Supply Systems in Drinking Water Regional Companies using the Balance Scorecard approach and making the most suitable strategy for the lowest valued assessment indicator based on performance assessment in optimizing PERUMDAM Tirta Khatulistiwa's performance using SWOT analysis.Based on the study, PERUMDAM Tirta Khatulistiwa has a total score of 3.72 for all factors; this means it is a \"healthy\" PERUMDAM. After studying the best way to improve PERUMDAM Tirta Khatulistiwa, we found that its weaknesses should be fixed so that existing opportunities are used to their fullest. Another way to boost PERUMDAM's performance is to increase technological innovation by using more reliable technology and making apps that fit the needs of every part of PERUMDAM Tirta Khatulistiwa and improve customer service.","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135134569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Soil stabilization is mixing soil with specific materials to improve the soil's technical attributes to meet specific technical requirements, such as increasing its stability. One stabilization method is chemical stabilization, which utilizes mixing heaped soil using lime and Spent Bleaching Earth (SBE). This research is focused on the effect of mixing lime with SBE for soil stabilization with maintenance time between 0, 7, and 14 days. The amount of lime used in the research is 4% from the soil dry weight with variations of the SBE mixture of 5%, 10%, 15%, and 20%. The conclusion obtained in this study was that adding SBE could increase the maximum dry density up to a percentage of 10%. Using SBE of more than 10% reduces the maximum dry density value but increases the optimum moisture content. From the mechanical attributes testing carried out, it can be seen that a percentage of 10% can increase the results of mechanical testing, while an increment above 10% will reduce the mechanical results. Based on the CBR and UCS test results, we found that lime and SBE mixture can pass the attributes limit for a grade S aggregate foundation layer and full-fill the requirement as a road body foundation layer. So, it can be concluded that lime and SBE mixture can be used as a road body foundation layer but has not reached the target for road foundation layers and requires maintenance for some time.
{"title":"UTILIZATION OF SPENT BLEACHING EARTH WASTE ON LIME-SOIL STABILIZATION FOR ROAD BODY FOUNDATION LAYER BASED ON SOIL MECHANICAL","authors":"Ananda Anggiat Zanjabil, Eka Priadi, Vivi Bachtiar","doi":"10.26418/jts.v23i3.65881","DOIUrl":"https://doi.org/10.26418/jts.v23i3.65881","url":null,"abstract":"Soil stabilization is mixing soil with specific materials to improve the soil's technical attributes to meet specific technical requirements, such as increasing its stability. One stabilization method is chemical stabilization, which utilizes mixing heaped soil using lime and Spent Bleaching Earth (SBE). This research is focused on the effect of mixing lime with SBE for soil stabilization with maintenance time between 0, 7, and 14 days. The amount of lime used in the research is 4% from the soil dry weight with variations of the SBE mixture of 5%, 10%, 15%, and 20%. The conclusion obtained in this study was that adding SBE could increase the maximum dry density up to a percentage of 10%. Using SBE of more than 10% reduces the maximum dry density value but increases the optimum moisture content. From the mechanical attributes testing carried out, it can be seen that a percentage of 10% can increase the results of mechanical testing, while an increment above 10% will reduce the mechanical results. Based on the CBR and UCS test results, we found that lime and SBE mixture can pass the attributes limit for a grade S aggregate foundation layer and full-fill the requirement as a road body foundation layer. So, it can be concluded that lime and SBE mixture can be used as a road body foundation layer but has not reached the target for road foundation layers and requires maintenance for some time.","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135134772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.26418/jts.v23i3.68171
Danayanti Azmi Dewi Nusantara, Isroul Akbar Fawati
The Saluran Induk Madiun, abbreviated as SIM, is the primary waterway that irrigates the SIM Irrigation Area. Jati Dam, located in Gondangan Village, Gorang-Gareng District, Magetan Regency, is the primary source of the SIM Irrigation Area. This SIM Irrigation Area gets its main supply from Jati Dam; Jati Dam is the upstream or the beginning of the flow in the SIM Irrigation Area. In conditions before rehabilitation, the Jati Dam had a discharge of 4000 l/s to irrigate the entire SIM Irrigation Area. Especially for the SIM Irrigation Area in Magetan Regency, obtaining water supply from the Jati Dam at 17% of 350,746 l/s, the discharge value can only meet the paddy cropping pattern of 30%. Looking at these problems, the Government of Indonesia is seeking rehabilitation work to increase agricultural barns production. Therefore, it is necessary to research the improvement of irrigation network systems to determine the ratio of water availability before and after rehabilitation, water demand, and the value of increasing agricultural profits. This research uses the F.J. Mock to assess the availability of water discharge FAO Modified Penman Method and the amount of evapotranspiration used to analyze water demand for each cropping pattern. A comparison of the value of the availability and demand for water is presented in the form of a water balance.From the results of the analysis that has been carried out, it is concluded that the highest water availability in the SIM Irrigation Area in Magetan Regency before rehabilitation was 1.37 m3/sec, and the lowest was 0.74 m3/sec. In conditions after rehabilitation, the highest was 5.75 m3/sec, and the lowest was 4.64 m3/sec. It is known that the supply from the Jati Dam, in conditions before rehabilitation, was 17%, and in conditions after rehabilitation, it increased to 28%. The highest irrigation water requirement is the cropping pattern that uses 100% paddy of 3.01 m3/sec. Seeing the value of water availability compared to the still significant water demand, the Jati Dam intake can be reduced from 28% to 20% so that the remaining water can be distributed to the following secondary waterways. Water availability at a percentage of 28% is 5.75 m3/sec; at 20%, it becomes 3.49 m3/sec. This debit can fulfill the highest water demand of 3.01 m3/sec. In conditions before rehabilitation, the availability of water was only able to meet the planting pattern of Paddy (30%) - Paddy (25%) - Secondary crops (100%) with a profit of Rp.26,161,069,519.00. Whereas in conditions after rehabilitation, the availability of water can fulfill the planting pattern of Paddy (100%) - Paddy (100%) - Paddy (100%) with a profit reach up to Rp.115,325,883,740.00.
{"title":"STUDY OF IMPROVING THE IRRIGATION NETWORK SYSTEM FOR THE SALURAN INDUK MADIUN (SIM) IN MAGETAN REGENCY","authors":"Danayanti Azmi Dewi Nusantara, Isroul Akbar Fawati","doi":"10.26418/jts.v23i3.68171","DOIUrl":"https://doi.org/10.26418/jts.v23i3.68171","url":null,"abstract":"The Saluran Induk Madiun, abbreviated as SIM, is the primary waterway that irrigates the SIM Irrigation Area. Jati Dam, located in Gondangan Village, Gorang-Gareng District, Magetan Regency, is the primary source of the SIM Irrigation Area. This SIM Irrigation Area gets its main supply from Jati Dam; Jati Dam is the upstream or the beginning of the flow in the SIM Irrigation Area. In conditions before rehabilitation, the Jati Dam had a discharge of 4000 l/s to irrigate the entire SIM Irrigation Area. Especially for the SIM Irrigation Area in Magetan Regency, obtaining water supply from the Jati Dam at 17% of 350,746 l/s, the discharge value can only meet the paddy cropping pattern of 30%. Looking at these problems, the Government of Indonesia is seeking rehabilitation work to increase agricultural barns production. Therefore, it is necessary to research the improvement of irrigation network systems to determine the ratio of water availability before and after rehabilitation, water demand, and the value of increasing agricultural profits. This research uses the F.J. Mock to assess the availability of water discharge FAO Modified Penman Method and the amount of evapotranspiration used to analyze water demand for each cropping pattern. A comparison of the value of the availability and demand for water is presented in the form of a water balance.From the results of the analysis that has been carried out, it is concluded that the highest water availability in the SIM Irrigation Area in Magetan Regency before rehabilitation was 1.37 m3/sec, and the lowest was 0.74 m3/sec. In conditions after rehabilitation, the highest was 5.75 m3/sec, and the lowest was 4.64 m3/sec. It is known that the supply from the Jati Dam, in conditions before rehabilitation, was 17%, and in conditions after rehabilitation, it increased to 28%. The highest irrigation water requirement is the cropping pattern that uses 100% paddy of 3.01 m3/sec. Seeing the value of water availability compared to the still significant water demand, the Jati Dam intake can be reduced from 28% to 20% so that the remaining water can be distributed to the following secondary waterways. Water availability at a percentage of 28% is 5.75 m3/sec; at 20%, it becomes 3.49 m3/sec. This debit can fulfill the highest water demand of 3.01 m3/sec. In conditions before rehabilitation, the availability of water was only able to meet the planting pattern of Paddy (30%) - Paddy (25%) - Secondary crops (100%) with a profit of Rp.26,161,069,519.00. Whereas in conditions after rehabilitation, the availability of water can fulfill the planting pattern of Paddy (100%) - Paddy (100%) - Paddy (100%) with a profit reach up to Rp.115,325,883,740.00.","PeriodicalId":52838,"journal":{"name":"Jurnal Teknik Sipil","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135135107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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