International Journal of Civil Engineering
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Browsing International Journal of Civil Engineering by Author "Agustian, Yanyan"
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- ItemTHE BEHAVIOUR OF FROZEN SCORIA IN UNCONFINED COMPRESSION TEST(Horizon Research Publishing, 2019) Agustian, YanyanThe mechanical behaviour of the frozen or partially frozen soil changes significantly as soon as the ice holds the soil particles together. The strength of frozen soil can increase significantly. However, due to the temperature dependency and viscose nature of ice, the strength of frozen soils changes with time, strain rate and temperature. Water migration towards the ice lenses occurs during the freezing process depending on the characteristics of the soil, i.e. grain size and mineralogy, resulting in a significant change of the soil structure. Frost heaving may be the result, induced by the expansion of the water as it changes phase from frozen state. The aim of this study is to determine the unconfined compressive strength to calculate the unconsolidated shear strength of the frozen scoria under unconfined conditions. In unconfined compression tests, the influence of dry density ρd and water content w to the unconfined compression behaviour of frozen scoria was observed. The compressive strength of frozen scoria increases with the increase of w as well as the increase of ρd and the compressive strain of frozen scoria εf (axial strain at failure) is dependent on ρd.. Although some data scatters appear caused by the inhomogeneous of the samples, the effects of w and ρd to the stiffness of frozen scoria were observed. As well as initial Young’s modulus E0, secant modulus E50 of frozen scoria increases with the increasing of w and ρd.
- ItemEFFECT OF WORK SAFETY AND HEALTH KNOWLEDGE ON CONSTRUCTION WORKERS IN CAWANG-TOMANG CENGKARENG TOLL ROAD PROJECTS(Horizon Research Publishing, 2019) Setiawan, Asep; Akbar, Sandy Radhitya; Istambul, Muhammad Rozahi; Agustian, Yanyan; Saudi, Mohd Haizam Bin MohdSafety at the location of road works is an important part that is often overlooked in the construction and maintenance of roads. Management of the safety of the road work location is the responsibility of the road manager. In general, knowledge about Occupational Health and Safety (OSH) is very broad, but there are several OHS components that are considered important to be used as a benchmark for understanding OSH. These components are K3 Definition and Initiation, K3 Management System (SMK3), Personal Protective Equipment (PPE), K3 Facilities and Infrastructure, OHS Risk. Research on the influence of occupational safety and health knowledge on occupational health on construction worker behavior was carried out to determine the effect of K3 knowledge variables together on the behavior of construction workers. And to know the effect of K3 knowledge variables partially on the behavior of construction workers. From the results of the study it can be concluded that there is a relationship or a low level of correlation between K3 Knowledge and Workers' Behavior while the value of the Determination Coefficient (adjusted r square) is 0.033 which means only 3.3% of K3 Knowledge aspects that affect Construction Worker Behavior and the remaining 96.7% is influenced by other variables. Based on the results of the T-test calculation using the method of calculation of Multiple Linear Regression the value of t count
- ItemFLOOD IMPACT REDUCTION STUDY BY APPLYING RAINWATER HARVESTING IN DE MARRAKESH RESIDENTIAL(Turkish Journal of Computer and Mathematics Education, 2021) Hasan, Fuad; Agustian, Yanyan; A, R. Herdian Bayu; Widyanto, Bambang EkoFlood is a natural phenomenon that can threaten the existence of human life, especially during the rainy season. In addition, the increasing need for residential facilities has an impact on changing land functions in an area that was originally an infiltration area to become a residential area. De Marrakesh Residential which has a land area of ± 117.025 m2 is a residential area located in the Kecamatan Rancasari of Bandung City. In terms of flood prevention, this residential area already has a retention pond and pumps that drains water into the Cipamokolan river. But in reality there are still puddles that inundate the residential area of De Marrakesh. To deal with this, a flood impact reduction study was carried out by applying rainwater harvesting. In this study, the analysis carried out is the calculation of the planned rainfall, the selection of the type of rain distribution, the calculation of the volume of rainfall, and the estimated calculation of the volume of rainfall that can be captured. From the results of the analysis and calculations, the application of rainwater harvesting can reduce the impact of flooding that occurs in De Marrakesh Residential.
- ItemFLOOD IMPACT REDUCTION STUDY BY APPLYING RAINWATER HARVESTING IN DE MARRAKESH RESIDENTIAL(Turkish Journal of Computer and Mathematics Education, 2021) Hasan, Fuad; Agustian, Yanyan; A, R. Herdian Bayu; Widyanto, Bambang EkoFlood is a natural phenomenon that can threaten the existence of human life, especially during the rainy season. In addition, the increasing need for residential facilities has an impact on changing land functions in an area that was originally an infiltration area to become a residential area. De Marrakesh Residential which has a land area of ± 117.025 m2 is a residential area located in the Kecamatan Rancasari of Bandung City. In terms of flood prevention, this residential area already has a retention pond and pumps that drains water into the Cipamokolan river. But in reality there are still puddles that inundate the residential area of De Marrakesh. To deal with this, a flood impact reduction study was carried out by applying rainwater harvesting. In this study, the analysis carried out is the calculation of the planned rainfall, the selection of the type of rain distribution, the calculation of the volume of rainfall, and the estimated calculation of the volume of rainfall that can be captured. From the results of the analysis and calculations, the application of rainwater harvesting can reduce the impact of flooding that occurs in De Marrakesh Residential.
- ItemTHE INFLUENCE OF SLACK LIME TO CLAY TOWARDS OPTIMUM MOISTURE CONTENT (OMC) AND MAXIMUM DRY DENSITY (MDD)(jurnal ilmiah teknologi informasi terapan, 2019) Widyanto, Bambang Eko; Agustian, Yanyan; Setiawan, AsepPeningkatan populasi di Indonesia khususnya pada wilayah Jawa barat telah mengakibatkan perubahan yang cukup signifikan pada bidang tata guna lahan. Area vegetasi yang hijau telah berubah menjadi area-area perumahan, gunung kapur telah ditambang dan hal-hal tersebut mengakibatkan bencana seperti banjir dan longsor pada area yang curam. Penyebab terjadinya longsoran adalah dikarenakan berat tanah lebih berat dari tahanan tanah itu sendiri. Salah satu penyebab hal tersebut adalah tinggi nya limpasan yang terjadi pada daerah hulu DAS dan kemampuan tanah untuk menyerap air. Tanah pada lahan yang digunakan untuk perumahan atau pun pada area yang curam harus lah dipersiapkan pada kondisi maximum dry density (MDD) dan Optimum Moisture Content (OMC) agar bisa menghasilkan kuat geser yang optimum dan dapat menghindarkan potensi terjadinya longsor. Kondisi tanah pada area hulu umum nya terdiri dari kondis lempung yang berasal dari pelapukan batuan dan partikel lain nya. Lempung memiliki pori-pori yang cukup kecil dan cenderung tidak lulus air hingga dapat dijadikan inti bendungan. Hal tersebut mengkibatkan perlu nya analisa untuk membuat campuran komponen yang dapat dikerjakan dan juga dapat membantu lempung untuk meningkatkan pori-pori tanah nya juga mengurangi berat tanah tersebut. Penelitian ini terdiri dari serangkaian pengujian yang terdiri dari beberapa persentasi lempung (CL) dan kapur padam (SL), persentasi nya adalah 95% CL – 5 % SL, 80% CL – 20% SL, 65% CL – 35% SL dan 55% CL – 45% SL. Pengujian ini menghasilkan kesimpulan bahwa semakin tinggi Kapur Padam maka Kepadatan semakin menurun dan semakin menurun kepadatan maka kadar air semakin tinggi.
- ItemLAND SUBSIDENCE OF KANTO PLAIN DETECTION USING JERS-1 SAR INTERFEROMETRY(Horizon Research Publishing, 2019) Agustian, Yanyan; Hasan, Fuad; Siddiq, Raden Herdian Bayu AshSince InSAR technique has a capability to detect a small surface elevation changes over large area, InSAR system has been used widely for good resolution mapping and other applications on various applied sciences. InSAR imagery is applied to investigate surface change and result detailed maps of contour, which help to detect disaster areas. This research is aimed to estimate the land subsidence using the differential interferometric synthetic aperture radar (InSAR). The research object is located in the west part of Japan, Kanto Plain area, where ground water actively is being extracted in quite large scale and produces centimeters of subsidence every year. Over the analyzed area, the surface deformation was detected and it was only related to subsidence process. In other words, there is no surface arising or uplift of surface. It signed by color phase changes correspond from zero to minus values.
- ItemMORPHOMETRY STUDY AND INTEGRATED MANAGEMENT OF DIBAWAH LAKE WATERSHED SOLOK REGENCY(Horizon Research Publishing, 2019) Siddiq, Raden Herdian Bayu Ash; Hasan, Fuad; Agustian, Yanyan; KS, Ajeng Mayang; Saudi, Mohd. Haizam bin Mohd.Dibawah Lake is a tectonic lake located in Solok Regency, West Sumatra. It’s functioned as the West Sumatra Government as a tourist area, besides that it was also used as an irrigation water source. This study aims to obtain information on the characteristics of lake morphometry and formulate the concept of integrated management of Dibawah Lake Catchment Area. From the results of bathymetry mapping produces a lake area of 10998.1 ha with a circumference of 17.2 km, a maximum length of 6.4 km, a maximum width of 3 km, a maximum depth of 326.8 m, an average depth of 164.3 m and volume of 1688 million m3. The lake catchment area is 2881.7 ha and it is divided into 27 sub-catchments. The existing problems in the Dibawah Lake are (1) changes in lake area land cover into agricultural fields, (2) agricultural cropping patterns in slope areas, (3) lakefront settlements, (4) water quality degradation, (5) fish cages floating net and fishing ring. From the results of the SWOT analysis, the W-T (Weaknesses - Threats) strategy was chosen as the top priority. The W-T strategy focuses on strengthening and drafting rules, monitoring the implementation of rules, enforcing violations and socialization of the community.
- ItemSLOPE DEFORMATION OF ROAD SHOULDER AND RETAINING WALL EVALUATION AT RANCACILI-RANCASARI ROAD, WEST JAWA(International Journal of Psychosocial Rehabilitation, 2020) Prattama, Febbry; Kamaludin, Rifan; Febriyanto, Feri; Adam, Jamalludin; Agustian, YanyanDamage that is often found on the road is the collapse of the shoulder of the road even worse is the slope of the shoulder and this can be caused by the bearing capacity of the road that is not sufficient to withstand the live load that passes through the road and this is compounded by the absence of retaining walls on the slope. The Rancacili-Rancasari road section is a national alternative road that many vehicles pass by. In some places on the road, cracks occur and land subsidence occurs which can cause landslides on the shoulder of the road. The objective of this study is to evaluate the use of retaining walls to overcome landslides on the shoulder of the road. Taking into account the properties of the soil and the properties of the soil in the area, as an input parameter calculation, an appropriate and safe desgn is determined for the retaining wall type of self-weight retaining wall. By using the basic theory of earth pressure coloumb's theory, a lateral pressure calculation is performed that works on the wall and combined with the trial wedge of lateral pressure theory, then calculates the total load received by the wall to find the safety factor of the wall relationship with resistance to rotation, sliding and its bearing capacity.
- ItemSTUDI SISTEM DRAINASE PERGUDANGAN PAJANG KOTA TANGERANG(jurnal ilmiah teknologi informasi terapan, 2020) Hasan, Fuad; Siddiq, R.H.B. Ash; Agustian, YanyanDi daerah Pajang, Kota Tangerang, sebelah selatan Bandara Soekarno-Hatta akan dibangun sentra pergudangan dengan luas ± 6 Ha. Lahan yang ada merupakan lahan kosong yang belum dilengkapi sistem drainase. Berdasarkan kaidah teknis serta kebijakan-kebijakan pemerintah setempat yang berhubungan dengan sistem tata air perkotaan dan pengendalian banjir, perlu dicari solusi yang tepat untuk meminimalisir dampak yang akan terjadi akibat adanya pembangunan sarana tersebut tanpa mengganggu sistem tata air yang ada. Oleh karena itu, diperlukan suatu kajian teknis berupa Kajian Drainase Rencana Kawasan Pergudangan Pajang Kota Tangerang. Berdasarkan analisa yang telah dilakukan, jaringan saluran drainase yang direncanakan serta pembuatan kolam retensi di Kompleks Pergudangan Pajang dapat meminimalisir dampak banjir baik di Kawasan dalam pergudangan maupun Kawasan luar pergudangan.