Alfred Susilo - Academia.edu (original) (raw)
Papers by Alfred Susilo
E3S Web of Conferences
Foundation is one of the most important parts of the structure. The design and selection of found... more Foundation is one of the most important parts of the structure. The design and selection of foundations must be carried out properly to strengthen the structure. Different elevation buildings require more careful foundation design than other structures. The bearing capacity and settlement of the soil acting on the pile foundation will be very important to be taken into consideration in the construction of different elevation buildings, because the different elevation buildings have different heights, so the placement of the foundation depths is also different. There is load data to be used, load data will vary according to the elevation of the building. The difference on structure elevation is four-storey buildings until it reaches 24 storey building. Each floor has a height of three meters. The foundation analyzed by using bored pile. The soil data is from Central Jakarta. The foundation will be analyzed under the following condition. The foundation will be placed at the same pile ...
Jurnal Mitra Teknik Sipil, Nov 22, 2023
Jurnal Mitra Teknik Sipil, Nov 29, 2022
Although has been widely used, cases of diaphragm wall collapse in basemen excavation project sti... more Although has been widely used, cases of diaphragm wall collapse in basemen excavation project still occur sometimes. The collapse of diaphragm wall usually preceded by excessive lateral deformation of the diaphragm wall. This study discussed a case of excessive lateral deformation of the diaphragm wall in a 12 meter deep excavation project. Excessive deformation occurs when the excavation is at-11 meter depth. The amount of deformation occurred is 86.17 mm, while the allowable deformation limit is 84 mm. To prevent the wall from collapsing, excavation support system will be installed with ground anchor and strut as the options. Based on the analysis result, ground anchor can reduce the lateral deformation to 63.32 mm, while struts can reduce the lateral deformation to 67.72 mm. Thus, ground anchor will be recommended as the main option because it generates smaller deformation. However, the length of ground anchor required is very large and shall be installed outside project area so there is a possibility that ground anchor can not be applied. Although struts generates greater deformation than ground anchor, struts is recommended as a backup option that can be used because the struts components are only installed inside the excavation hole.
IOP Conference Series: Materials Science and Engineering, 2020
Shallow foundation and slab on ground that were built on soft clays might have some settlement be... more Shallow foundation and slab on ground that were built on soft clays might have some settlement because of the low bearing capacity. If the settlement that happened was a differential settlement, it can cause damage to the structure. There are many ways to fix the soil by improving the bearing capacity such as using wood pile. Wood pile is often used because it was easy to find, easy to use, and cheaper than using the pile made of concrete. There are many types of wood that can be used, for example dolken wood, mangrove, and bamboo. Those type of woods have different specification that effected the wood strength as a pile to improve the soil bearing capacity. The diameter and length of the wood also influence the pile effectiveness. All this factor can give a different result in reducing the settlement that happened on the soil.
Jurnal Serina Abdimas
The team observed the condition of the walls, gathered information from building owners, combined... more The team observed the condition of the walls, gathered information from building owners, combined the received information and finally conducted an engineering analysis. Based on this study, the best recommendation was obtained for the building owner to make an additional strengthening structure in the form of a combination of reinforced concrete column and beam with a cross section size of 300 x 300mm. The strengthening structure installed in the form of right triangles as high as the retaining wall. The strengthening structure located 1500mm apart. The strengthening column and beam are supported by two 300mm diameter drilled pile foundations tied together by 1500 x 300 x 300mm pile caps. The drilled pile foundation is buried to a depth of 600mm lying on above hard layer soil. Between strengthening structures that are 1500mm apart are tied with reinforced concrete beam with a 300 x 300mm cross section to unite the strengthening structure. In conducting this study of solving the con...
JMTS: Jurnal Mitra Teknik Sipil
The foundation is a building structure that is below ground level to support the load above it. S... more The foundation is a building structure that is below ground level to support the load above it. So the foundation selection must be adjusted to the load used and the carrying capacity of the soil that can withstand the foundation used. This is because the selection is adjusted to the carrying capacity with conditions on the soil in the field. There will be two types in the selection of foundation poles end bearing piles and friction piles. The pole used is a drill pole because it is quite easy to adjust the diameter and depth to be used. Research in this journal will analyze the foundation of the drill pile using an end bearing pile, which is a foundation pole occupied on hard ground, and minimize There will be the decrease in the foundation. The purpose of analyzing this foundation pile is to find out which end foundation pole is more efficient to use based on the calculation of bearing capacity, settlement, and work cost factors foundation pole. In the study's results, an ...
IOP Conference Series: Materials Science and Engineering, 2020
Retaining wall is a very important structure in the basement construction process. The planning o... more Retaining wall is a very important structure in the basement construction process. The planning of the retaining wall, whether in the design or in the processing step should be precise, otherwise, it can be disastrous. In the construction process, problems sometimes happen when the excavation process is going on. Therefore, the role of retaining wall is crucial. If the retaining wall doesn’t function well, the soil around the excavation site will shift and move and it can cause a rift or even more fatal failures to the structure. The analysis on this study is the failure analysis on retaining wall type secant pile. This analysis will be focusing on the failure that happen on primary pile. The analysis is done by reducing the strength of the primary pile based on the potential failure that might happen. This aims to test the deformation on the secant pile system, if there’s a failure on the primary pile. It will be done in two different types of soil, clay and sand.
Jurnal Mitra Teknik Sipil, Nov 29, 2022
Foundation is the lowest part of the structure that bear all the loads of the building above it. ... more Foundation is the lowest part of the structure that bear all the loads of the building above it. To create a solid building, the foundation must be designed and worked thorough and carefully. Standard penetration test is one of the methods used to determine the parameters of the soil where the building will be built. In designing the foundation, it is often found that the foundation is designed to reach hard soil with N-SPT = 50 even though the soil at N-SPT = 30 is also hard soil. This study aims to analyze the axial bearing capacity and the settlement of spun pile and boring pile that occur on fine-grained soils and coarse-grained soils at N-SPT = 30. This analysis is reviewed in areas in Cikarang. The methods used in calculating the bearing capacity of the spun pile are Meyerhof and Vesic. The methods used in calculating the bearing capacity of bored piles are Reese & Wright and O-Neil. The results of this study will show that the bearing capacity of coarse-grained soils are bigger than fine grained soil and the settlement of coarse-grained soils are bigger than fine coarse-grained soils
Jurnal Mitra Teknik Sipil, Feb 28, 2022
The subsidence phenomenon of foundation piles caused by unidentified soil lenses layer. Soil lens... more The subsidence phenomenon of foundation piles caused by unidentified soil lenses layer. Soil lens is a dense soil layer which the N-SPT value exceeds 50 with the thickness around 1-4 m located between soft soil layers which the N-SPT value below 15. The soil lens itself is the outcome of material deposition process due to water flow and erosion activity that accumulates and becomes saturated after long time until a relatively thin layer with similar characteristics as hard soil is formed. Thin soil lenses can break and lead to failure. This study aims to analyze the axial bearing capacity and settlement of driven piles foundations that occupy two end bearing elevation conditions, which takes place on soil lens and the hard soil layer. The bearing capacity is based on a project in Cengkareng, West Jakarta where the thickness of soil lens is around 2,5 m using one bore log report and laboratory report. The method that will be used for this research are Meyerhof and Hanna 1978 and Meyerhof 1956. This research conclude the end bearing capacity of soil lenses is smaller than hard soil layer and settlement of soil lenses layer is bigger than hard soil layer.
JMTS: Jurnal Mitra Teknik Sipil
Daya dukung fondasi merupakan suatu hal yang sangat penting dalam beridirinya suatu bangunan. Hal... more Daya dukung fondasi merupakan suatu hal yang sangat penting dalam beridirinya suatu bangunan. Hal ini disebabkan daya dukung fondasi lah yang membuat fondasi mampu untuk menahan beban yang tersalurkan dari struktur atas bangunan. Dalam menghitung daya dukung fondasi tentu saja harus mencari mendesain fondasi yang memiliki daya dukung aman sehingga bangunan tersebut pun akan berdiri dengan aman. Dalam memperhitungkan daya dukung dari fondasi perlu diketahui efektivitas tiang fondasi. Pada skripsi ini terjadi suatu kasus dalam penambahan lantai bangunan sehingga membutuhkan tambahan daya dukung dan tiang yang digunakan untuk menambah daya dukung inipun berbeda dari tiang utamanya. Tiang yang akan digunakan untuk menjadi tiang sisipan adalah micropile dan strauss pile. Kedua tiang sisipan tersebut akan dibandingkan jika disisipkan dengan jarak 1,5D dari tiang utama. Dalam menentukan daya dukung tambahan ini maka diperlukan perhitungan efisiensi kembali untuk mengetahui tiang yang palin...
JMTS: Jurnal Mitra Teknik Sipil
Liquefaction is a phenomenon that can cause failure of the foundation. One type of foundation use... more Liquefaction is a phenomenon that can cause failure of the foundation. One type of foundation used is a pile foundation and it is necessary to check the effect of liquefaction. Checking the cross section of the pile foundation against the influence of liquefaction is done by varying the size and geometry of the cross section. First, check the liquefaction potential of the soil layer. Then, the axial bearing capacity is calculated without and with the influence of liquefaction. After that, the finite difference analysis on the foundation is carried out with the help of the program to obtain the lateral displacements and internal forces of the pile followed by control of the permissible lateral displacement and the capacity of the pile foundation. The results show that the foundation has failed axial bearing capacity and does not meet the requirements for moment capacity. After increasing the number of piles, the lateral displacements and shears for drilled shafts with a diameter of 1...
JMTS: Jurnal Mitra Teknik Sipil
There are various dynamic loads acting on basement structure of building, for example earthquake ... more There are various dynamic loads acting on basement structure of building, for example earthquake load. It can be influenced by many parameters, both structural and soil parameters. Therefore, the effect of variation of the structural and soil parameter values on the response of basement structure due to earthquake load will be analyzed. Thus, it can be seen the influence of studied parameters on the response of the basement. The deformation of diaphragm wall will be the focus in this study. This research will be using Midas GTS NX program in modelling the basement structure of the building and the surrounding soil using the finite element method. The analyzed basement structure consists of flat slab, diaphragm wall, king post, raft, and pile foundation. Earthquake load will be analyzed using the response spectrum method based on data of Jakarta. From the analysis, it is found that the parameters that affect the deformation of the diaphragm wall are the soil’s modulus of elasticity, ...
Skripsi S 1 Teknik Sipil, Jul 26, 2010
SKRIPSI S-1 TEKNIK SIPIL, Juli : 2005. ...
Prosiding SENAPENMAS, 2021
The situation and conditions with the COVID-19 pandemic have made students to Learn From Home (BD... more The situation and conditions with the COVID-19 pandemic have made students to Learn From Home (BDR). This situation has been going on for more than 1 year since March 2020, the government, in this case, the Ministry of Education and Culture has given directions to open Face-to-face Learning (PTM) in the even semester of 2020. From the studies conducted, many schools (>80%) in Indonesia are ready for PTM. The directives from the government have been stated in the Joint Decree (SKB 4 ministers dated June 15, 2020 and revised on August 7, 2020 and March 30, 2021. The school authorities must improve the schools to prepare for the opening of this PTM after a long BDR, especially SMAN 96 West Jakarta which is a partner in this Community Service. Preparation must be made in accordance with the government's directive in the SKB. How are students preparing to do PTM? What should be done? To help the schools keep the PTM running well and safely, it is necessary to make education about ...
The document mentioned above has been reviewed and accepted by the student's advisor, on behalf o... more The document mentioned above has been reviewed and accepted by the student's advisor, on behalf of the advisory committee, and by the Director of Graduate Studies (DGS), on behalf of the program; we verify that this is the final, approved version of the student's thesis including all changes required by the advisory committee. The undersigned agree to abide by the statements above.
IOP Conference Series: Materials Science and Engineering, 2019
Fly ash exhibits poor strength properties and is susceptible to liquefaction when subject to dyna... more Fly ash exhibits poor strength properties and is susceptible to liquefaction when subject to dynamic loading. Coal power plants produce abundant of fly ash and increasing each year. With limited area to dump the ashes, those facilities will raise the embankment which resulted in higher risk of failure due to liquefaction during earthquake. Calculating the factor of safety using cyclic stress ratio (CSR) and cyclic resistance ratio (CRR) are relatively easy, on the other hand, gathering information for CRR depend on laboratory testing or onsite testing which difficult to get the sample, time consuming and expensive. This study shows example of using equation from previous research to predict the CRR by using only CSR value.
Prosiding SENAPENMAS, 2021
Water is one of the natural resources that has very important role in the daily life of all livin... more Water is one of the natural resources that has very important role in the daily life of all living creatures. Mishandling of water might result in water catastrophe. Associates want to give learning to students regarding the environment, use water wisely, and do greywater recycling. Associates need help to make discussion topic regarding the use and saving also conceptual of greywater recycle for rest room necessity. Water treatment need to be done which is one of important factor to accomplish sustainable development related to our natural resources in this case is water. This devotion aim is to supply material to discuss between teachers and students about water necessity and give understanding to next generation regarding the important of clean water, to use water responsibly and understand greywater recycle. The output of greywater recycling can be used as an alternative water resource to solve the lack of water. Recycled water can be used for toilet and watering plant. Associa...
Lecture Notes in Civil Engineering, 2022
JMTS: Jurnal Mitra Teknik Sipil, Oct 30, 2019
JMTS: Jurnal Mitra Teknik Sipil
Akibat dari pertumbuhan penduduk dan lahan yang semakin terbatas adalah peningkatan harga lahan. ... more Akibat dari pertumbuhan penduduk dan lahan yang semakin terbatas adalah peningkatan harga lahan. Munculnya masalah ini para ahli memberikan solusi untuk membangun hunian vertikal. Meningkatnya kebutuhan tempat tinggal merupakan salah satu faktor yang mempengaruhi ketinggian hunian vertikal. Hal ini mengakibatkan berat gedung yang semakin besar dan fondasi konvensional yang sulit untuk diterapkan. Salah satu solusi yaitu menggunakan fondasi tiang rakit. Fondasi tiang rakit yang telah dikemukakan oleh Burland dkk. (1977), digunakan untuk memikul beban yang berlebihan oleh superstructures seperti pencakar langit. Metode fondasi tiang rakit dikemukakan karena penurunan total dan perbedaan penurunan pada fondasi rakit melebihi batasan izin dan dapat merusak bangunan di atasnya, sehingga ditambahkan tiang untuk mengurangi penurunan total dan perbedaan penurunan tersebut. Akan tetapi pada kondisi di lapangan. Beban aksial yang dipikul pada fondasi rakit sebagian terdistribusi ke tiang. Seh...
E3S Web of Conferences
Foundation is one of the most important parts of the structure. The design and selection of found... more Foundation is one of the most important parts of the structure. The design and selection of foundations must be carried out properly to strengthen the structure. Different elevation buildings require more careful foundation design than other structures. The bearing capacity and settlement of the soil acting on the pile foundation will be very important to be taken into consideration in the construction of different elevation buildings, because the different elevation buildings have different heights, so the placement of the foundation depths is also different. There is load data to be used, load data will vary according to the elevation of the building. The difference on structure elevation is four-storey buildings until it reaches 24 storey building. Each floor has a height of three meters. The foundation analyzed by using bored pile. The soil data is from Central Jakarta. The foundation will be analyzed under the following condition. The foundation will be placed at the same pile ...
Jurnal Mitra Teknik Sipil, Nov 22, 2023
Jurnal Mitra Teknik Sipil, Nov 29, 2022
Although has been widely used, cases of diaphragm wall collapse in basemen excavation project sti... more Although has been widely used, cases of diaphragm wall collapse in basemen excavation project still occur sometimes. The collapse of diaphragm wall usually preceded by excessive lateral deformation of the diaphragm wall. This study discussed a case of excessive lateral deformation of the diaphragm wall in a 12 meter deep excavation project. Excessive deformation occurs when the excavation is at-11 meter depth. The amount of deformation occurred is 86.17 mm, while the allowable deformation limit is 84 mm. To prevent the wall from collapsing, excavation support system will be installed with ground anchor and strut as the options. Based on the analysis result, ground anchor can reduce the lateral deformation to 63.32 mm, while struts can reduce the lateral deformation to 67.72 mm. Thus, ground anchor will be recommended as the main option because it generates smaller deformation. However, the length of ground anchor required is very large and shall be installed outside project area so there is a possibility that ground anchor can not be applied. Although struts generates greater deformation than ground anchor, struts is recommended as a backup option that can be used because the struts components are only installed inside the excavation hole.
IOP Conference Series: Materials Science and Engineering, 2020
Shallow foundation and slab on ground that were built on soft clays might have some settlement be... more Shallow foundation and slab on ground that were built on soft clays might have some settlement because of the low bearing capacity. If the settlement that happened was a differential settlement, it can cause damage to the structure. There are many ways to fix the soil by improving the bearing capacity such as using wood pile. Wood pile is often used because it was easy to find, easy to use, and cheaper than using the pile made of concrete. There are many types of wood that can be used, for example dolken wood, mangrove, and bamboo. Those type of woods have different specification that effected the wood strength as a pile to improve the soil bearing capacity. The diameter and length of the wood also influence the pile effectiveness. All this factor can give a different result in reducing the settlement that happened on the soil.
Jurnal Serina Abdimas
The team observed the condition of the walls, gathered information from building owners, combined... more The team observed the condition of the walls, gathered information from building owners, combined the received information and finally conducted an engineering analysis. Based on this study, the best recommendation was obtained for the building owner to make an additional strengthening structure in the form of a combination of reinforced concrete column and beam with a cross section size of 300 x 300mm. The strengthening structure installed in the form of right triangles as high as the retaining wall. The strengthening structure located 1500mm apart. The strengthening column and beam are supported by two 300mm diameter drilled pile foundations tied together by 1500 x 300 x 300mm pile caps. The drilled pile foundation is buried to a depth of 600mm lying on above hard layer soil. Between strengthening structures that are 1500mm apart are tied with reinforced concrete beam with a 300 x 300mm cross section to unite the strengthening structure. In conducting this study of solving the con...
JMTS: Jurnal Mitra Teknik Sipil
The foundation is a building structure that is below ground level to support the load above it. S... more The foundation is a building structure that is below ground level to support the load above it. So the foundation selection must be adjusted to the load used and the carrying capacity of the soil that can withstand the foundation used. This is because the selection is adjusted to the carrying capacity with conditions on the soil in the field. There will be two types in the selection of foundation poles end bearing piles and friction piles. The pole used is a drill pole because it is quite easy to adjust the diameter and depth to be used. Research in this journal will analyze the foundation of the drill pile using an end bearing pile, which is a foundation pole occupied on hard ground, and minimize There will be the decrease in the foundation. The purpose of analyzing this foundation pile is to find out which end foundation pole is more efficient to use based on the calculation of bearing capacity, settlement, and work cost factors foundation pole. In the study's results, an ...
IOP Conference Series: Materials Science and Engineering, 2020
Retaining wall is a very important structure in the basement construction process. The planning o... more Retaining wall is a very important structure in the basement construction process. The planning of the retaining wall, whether in the design or in the processing step should be precise, otherwise, it can be disastrous. In the construction process, problems sometimes happen when the excavation process is going on. Therefore, the role of retaining wall is crucial. If the retaining wall doesn’t function well, the soil around the excavation site will shift and move and it can cause a rift or even more fatal failures to the structure. The analysis on this study is the failure analysis on retaining wall type secant pile. This analysis will be focusing on the failure that happen on primary pile. The analysis is done by reducing the strength of the primary pile based on the potential failure that might happen. This aims to test the deformation on the secant pile system, if there’s a failure on the primary pile. It will be done in two different types of soil, clay and sand.
Jurnal Mitra Teknik Sipil, Nov 29, 2022
Foundation is the lowest part of the structure that bear all the loads of the building above it. ... more Foundation is the lowest part of the structure that bear all the loads of the building above it. To create a solid building, the foundation must be designed and worked thorough and carefully. Standard penetration test is one of the methods used to determine the parameters of the soil where the building will be built. In designing the foundation, it is often found that the foundation is designed to reach hard soil with N-SPT = 50 even though the soil at N-SPT = 30 is also hard soil. This study aims to analyze the axial bearing capacity and the settlement of spun pile and boring pile that occur on fine-grained soils and coarse-grained soils at N-SPT = 30. This analysis is reviewed in areas in Cikarang. The methods used in calculating the bearing capacity of the spun pile are Meyerhof and Vesic. The methods used in calculating the bearing capacity of bored piles are Reese & Wright and O-Neil. The results of this study will show that the bearing capacity of coarse-grained soils are bigger than fine grained soil and the settlement of coarse-grained soils are bigger than fine coarse-grained soils
Jurnal Mitra Teknik Sipil, Feb 28, 2022
The subsidence phenomenon of foundation piles caused by unidentified soil lenses layer. Soil lens... more The subsidence phenomenon of foundation piles caused by unidentified soil lenses layer. Soil lens is a dense soil layer which the N-SPT value exceeds 50 with the thickness around 1-4 m located between soft soil layers which the N-SPT value below 15. The soil lens itself is the outcome of material deposition process due to water flow and erosion activity that accumulates and becomes saturated after long time until a relatively thin layer with similar characteristics as hard soil is formed. Thin soil lenses can break and lead to failure. This study aims to analyze the axial bearing capacity and settlement of driven piles foundations that occupy two end bearing elevation conditions, which takes place on soil lens and the hard soil layer. The bearing capacity is based on a project in Cengkareng, West Jakarta where the thickness of soil lens is around 2,5 m using one bore log report and laboratory report. The method that will be used for this research are Meyerhof and Hanna 1978 and Meyerhof 1956. This research conclude the end bearing capacity of soil lenses is smaller than hard soil layer and settlement of soil lenses layer is bigger than hard soil layer.
JMTS: Jurnal Mitra Teknik Sipil
Daya dukung fondasi merupakan suatu hal yang sangat penting dalam beridirinya suatu bangunan. Hal... more Daya dukung fondasi merupakan suatu hal yang sangat penting dalam beridirinya suatu bangunan. Hal ini disebabkan daya dukung fondasi lah yang membuat fondasi mampu untuk menahan beban yang tersalurkan dari struktur atas bangunan. Dalam menghitung daya dukung fondasi tentu saja harus mencari mendesain fondasi yang memiliki daya dukung aman sehingga bangunan tersebut pun akan berdiri dengan aman. Dalam memperhitungkan daya dukung dari fondasi perlu diketahui efektivitas tiang fondasi. Pada skripsi ini terjadi suatu kasus dalam penambahan lantai bangunan sehingga membutuhkan tambahan daya dukung dan tiang yang digunakan untuk menambah daya dukung inipun berbeda dari tiang utamanya. Tiang yang akan digunakan untuk menjadi tiang sisipan adalah micropile dan strauss pile. Kedua tiang sisipan tersebut akan dibandingkan jika disisipkan dengan jarak 1,5D dari tiang utama. Dalam menentukan daya dukung tambahan ini maka diperlukan perhitungan efisiensi kembali untuk mengetahui tiang yang palin...
JMTS: Jurnal Mitra Teknik Sipil
Liquefaction is a phenomenon that can cause failure of the foundation. One type of foundation use... more Liquefaction is a phenomenon that can cause failure of the foundation. One type of foundation used is a pile foundation and it is necessary to check the effect of liquefaction. Checking the cross section of the pile foundation against the influence of liquefaction is done by varying the size and geometry of the cross section. First, check the liquefaction potential of the soil layer. Then, the axial bearing capacity is calculated without and with the influence of liquefaction. After that, the finite difference analysis on the foundation is carried out with the help of the program to obtain the lateral displacements and internal forces of the pile followed by control of the permissible lateral displacement and the capacity of the pile foundation. The results show that the foundation has failed axial bearing capacity and does not meet the requirements for moment capacity. After increasing the number of piles, the lateral displacements and shears for drilled shafts with a diameter of 1...
JMTS: Jurnal Mitra Teknik Sipil
There are various dynamic loads acting on basement structure of building, for example earthquake ... more There are various dynamic loads acting on basement structure of building, for example earthquake load. It can be influenced by many parameters, both structural and soil parameters. Therefore, the effect of variation of the structural and soil parameter values on the response of basement structure due to earthquake load will be analyzed. Thus, it can be seen the influence of studied parameters on the response of the basement. The deformation of diaphragm wall will be the focus in this study. This research will be using Midas GTS NX program in modelling the basement structure of the building and the surrounding soil using the finite element method. The analyzed basement structure consists of flat slab, diaphragm wall, king post, raft, and pile foundation. Earthquake load will be analyzed using the response spectrum method based on data of Jakarta. From the analysis, it is found that the parameters that affect the deformation of the diaphragm wall are the soil’s modulus of elasticity, ...
Skripsi S 1 Teknik Sipil, Jul 26, 2010
SKRIPSI S-1 TEKNIK SIPIL, Juli : 2005. ...
Prosiding SENAPENMAS, 2021
The situation and conditions with the COVID-19 pandemic have made students to Learn From Home (BD... more The situation and conditions with the COVID-19 pandemic have made students to Learn From Home (BDR). This situation has been going on for more than 1 year since March 2020, the government, in this case, the Ministry of Education and Culture has given directions to open Face-to-face Learning (PTM) in the even semester of 2020. From the studies conducted, many schools (>80%) in Indonesia are ready for PTM. The directives from the government have been stated in the Joint Decree (SKB 4 ministers dated June 15, 2020 and revised on August 7, 2020 and March 30, 2021. The school authorities must improve the schools to prepare for the opening of this PTM after a long BDR, especially SMAN 96 West Jakarta which is a partner in this Community Service. Preparation must be made in accordance with the government's directive in the SKB. How are students preparing to do PTM? What should be done? To help the schools keep the PTM running well and safely, it is necessary to make education about ...
The document mentioned above has been reviewed and accepted by the student's advisor, on behalf o... more The document mentioned above has been reviewed and accepted by the student's advisor, on behalf of the advisory committee, and by the Director of Graduate Studies (DGS), on behalf of the program; we verify that this is the final, approved version of the student's thesis including all changes required by the advisory committee. The undersigned agree to abide by the statements above.
IOP Conference Series: Materials Science and Engineering, 2019
Fly ash exhibits poor strength properties and is susceptible to liquefaction when subject to dyna... more Fly ash exhibits poor strength properties and is susceptible to liquefaction when subject to dynamic loading. Coal power plants produce abundant of fly ash and increasing each year. With limited area to dump the ashes, those facilities will raise the embankment which resulted in higher risk of failure due to liquefaction during earthquake. Calculating the factor of safety using cyclic stress ratio (CSR) and cyclic resistance ratio (CRR) are relatively easy, on the other hand, gathering information for CRR depend on laboratory testing or onsite testing which difficult to get the sample, time consuming and expensive. This study shows example of using equation from previous research to predict the CRR by using only CSR value.
Prosiding SENAPENMAS, 2021
Water is one of the natural resources that has very important role in the daily life of all livin... more Water is one of the natural resources that has very important role in the daily life of all living creatures. Mishandling of water might result in water catastrophe. Associates want to give learning to students regarding the environment, use water wisely, and do greywater recycling. Associates need help to make discussion topic regarding the use and saving also conceptual of greywater recycle for rest room necessity. Water treatment need to be done which is one of important factor to accomplish sustainable development related to our natural resources in this case is water. This devotion aim is to supply material to discuss between teachers and students about water necessity and give understanding to next generation regarding the important of clean water, to use water responsibly and understand greywater recycle. The output of greywater recycling can be used as an alternative water resource to solve the lack of water. Recycled water can be used for toilet and watering plant. Associa...
Lecture Notes in Civil Engineering, 2022
JMTS: Jurnal Mitra Teknik Sipil, Oct 30, 2019
JMTS: Jurnal Mitra Teknik Sipil
Akibat dari pertumbuhan penduduk dan lahan yang semakin terbatas adalah peningkatan harga lahan. ... more Akibat dari pertumbuhan penduduk dan lahan yang semakin terbatas adalah peningkatan harga lahan. Munculnya masalah ini para ahli memberikan solusi untuk membangun hunian vertikal. Meningkatnya kebutuhan tempat tinggal merupakan salah satu faktor yang mempengaruhi ketinggian hunian vertikal. Hal ini mengakibatkan berat gedung yang semakin besar dan fondasi konvensional yang sulit untuk diterapkan. Salah satu solusi yaitu menggunakan fondasi tiang rakit. Fondasi tiang rakit yang telah dikemukakan oleh Burland dkk. (1977), digunakan untuk memikul beban yang berlebihan oleh superstructures seperti pencakar langit. Metode fondasi tiang rakit dikemukakan karena penurunan total dan perbedaan penurunan pada fondasi rakit melebihi batasan izin dan dapat merusak bangunan di atasnya, sehingga ditambahkan tiang untuk mengurangi penurunan total dan perbedaan penurunan tersebut. Akan tetapi pada kondisi di lapangan. Beban aksial yang dipikul pada fondasi rakit sebagian terdistribusi ke tiang. Seh...