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All Journal Jurnal Jejaring Matematika dan Sains BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan PARENTAS: Jurnal Mahasiswa Pendidikan Teknologi dan Kejuruan
Revianti Coenraad
Program Studi Pendidikan Teknik Bangunan, Universitas Palangka Raya
Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Education Energy Engineering Mathematics Physics Transportation Other

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Perancangan Filter Penjernih Air Sungai Kahayan Berbasis Pasir Silika Dan Lempung Alam Asal Kalimantan Tengah: Design of Kahayan River Water Treatment Filter Based Silica Sand and Natural Clay of Central Kalimantan Revianti Coenraad; Wiratno; Karelius Karelius
Jurnal Jejaring Matematika dan Sains Vol. 1 No. 2 (2019): Edisi Desember 2019
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.v1i2.213

Abstract

Salah satu cara pengolahan air yang sederhana dan ramah lingkungan adalah melalui proses penyaringan dengan instalasi penyaringan air sederhana (IPAS) menggunakan bahan alam. Bahan alam yang dapat digunakan sebagai filter dalam instalasi penjernihan air sederhana adalah pasir silika dan lempung alam yang diaktivasi. Pengambilan sampel sungai akan dilakukan di DAS (Daerah Aliran Sungai) Kahayan Kalimantan Tengah. Sampling air akan dilakukan pada saat musim kemarau sehingga tidak ada pengaruh pengenceran. Filter pasir silika dan kerikil diperoleh dari toko penjual ikan hias yaitu pasir ukuran halus dan kasar. Filter lempung mangan dapat dibuat dengan menggunakan lempung alam yang perlakukan dengan MnCl2 dan KMnO4. Hasil pengujian menunjukkan filter lempung mangan dan arang aktif mampu menyaring zat-zat berbahaya yang terlarut dalam air, menghilangkan bau dan menjernihkan air sungai kahayan yang keruh. Air sungai kahayan yang sebelum dilakukan penjernihan memiliki nilai pH 5,5, kandungan Fe 2,16 mg/L, total padatan tersuspensi (TSS) 258 mg/L, total padatan terlarut 30 mg/L, kekeruhan 140 NTU dan sangat bau. Setelah dilakukan penjernihan dengan instalasi penjernihan air, penjernihan memiliki nilai pH 6,5, kandungan Fe 0,7 mg/L, total padatan tersuspensi (TSS) 134 mg/L, total padatan terlarut 32 mg/L, kekeruhan 35,3 NTU dan tidak berbau. Hasil penjernihan air ini cukup layak digunanakan sebagai air bersih karena nilai pH, kandungan Fe, TDS, TSS, kekeruhan dan bau sesuai dengan syarat air bersih menurut Permenkes RI No: 416/MENKES/PER/IX/1990.
MODELING MATERIALS PRICE FOR BUILDING MATERIAL IN PALANGKA RAYA Yulin Patrisia; Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 4 No. 2 (2016): Journal Balanga Edisi Juli-Desember 2016
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

One of the components that play a vital role to the success of a construction project is construction prices, namely material prices, leasing and purchasing equipment prices, and construction wages. In the planning stage, the price used is the approximate price that will valid at the time of the project activities. At the implementing stage, the price used is the result of detailed estimates approaching real conditions at the time of the project activities. At the stage of monitoring and evaluation, the price will be reviewed to the conformity of the realization in the field, both the quantity and quality, further compared with employment contract. Research on the affecting factors of price construction materials is important. Furthermore, the affecting factors will be analyse to get a model approach for relevant price of construction materials. The construction material object in this research was timber. The study was conducted to obtain primary data and secondary data. Secondary data was performed to establish the factors that are predicted to affect the price of wood materials. Primary data were collected by distributing a questionnaire to 15 contractors in the city of Palangka Raya. Data obtained from the questionnaire and then analyzed by Severity Index (SI) for establishing the factors that affect the price of wood materal. Furthermore, the data were analyzed by the PLS model to obtain a model of approach to wood material prices. The study states there are several factors that affect the price of wood materials, namely economic factors, location factors, material resources factors, transport factors, and regulatory and government policies factors. Model approach to set the price of wood material by using PLS analysis showed that the material resources has an effect on the price of wood material, while the most dominant variable is the location factor.
SEDIMENT TRANSPORT STUDIES ON HOMOGENEOUS SOIL BASE MATERIAL Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 1 No. 1 (2013): Journal Balanga Edisi Januari-Juni 2013
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

Sediment transport is the movement of sediment granular material/non cohesive by water flow. Sediment is carried by the flow of water constantly, which can be distinguished as floating sediment (suspended load) and bed load sediment. Sediment transport from upstream to down stream will affect some areas that experienced scour and deposition (sedimentation). This will cause a variety of problem shence it is needed to know the amount of sediment transport since it always moves with the flow.To minimize its negative effects, it is necessary to study the amount of sediment transport with homogeneous base material composed of sand and gravel. This study aimed to determine the effect of water discharge(Q) and the number of stream sediment transported (T) and to knowthe basic condition of the channel due to sediment transport after discharge flowed. The experiment was conducted at the glass channel of Laboratory of Hydrology/Hydraulics, Faculty of Engineering, University of Palangka Raya with dimensions of 400x10x25cm, while the selection of grain grading and inspection of the channel density of the base material such as sand and gravel carried out at the Laboratory of Soil Mechanics, Faculty of Engineering, University of Palangka Raya.The amount of discharge flowed varies with time and the experiment was performed 5 times for each channel base material. The results of the sediment transport studies on materials such as sand and gravel base shows that the greater the flow, the greater also the amount of sediment transported while the smaller debit amounts of sediment transported less. Sand diameter 0.43mm to0.58 mm transported more than the transported gravel with a diameter of2.40mm to 4.75mm, mostly gravel grain rolling and sliding just moves along the baseline. Basic conditions after a transport channel has changed from its original condition with the average basic channels 2.00cm thickness would appear to be a plane bed, washed-out dunes/transition, ripple and dunes.
MATHEMATIC MODELLING OF CONCRETE PUMP PRODUCTIVITY ON THE CONCRETE WORK OF CONSTRUCTION PROJECT IN PALANGKA RAYA Yulin Patrisia; Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 2 No. 2 (2014): Journal Balanga Edisi Juli-Desember 2014
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

The physical activities in Central Kalimantan Province especially Palangka Raya in the recent years indicates a good development and is cathed by the construction entrepreneur as one of good business opportunities, one of which is ready-mix-concrete company which produce fresh concrete. With this company, the concreting of high building can be done faster with stable concrete quality. In the field, the use of ready mix concrete for high building is equipped with a concrete pump. Concrete pump is an equipment to pump concrete to concreting location, mainly to a location difficult to reach by mixer truck. With concrete pump, concreting can be done faster. However, its productivity depends on the distance and the height of the location, beside the concrete quality itself. The research on concrete pump productivity on the concreting of construction project in Palangka Raya aims to make a mathematic model that is able to predict the relationship between concrete pump productivity and distance and height of the location of concreting. The result shows that there is a strong relationship between productivity with horizontal concreting, which is modelled by the formula (a) Y = 0.642 – 0.09 X1 + E, where Y = productivity (m3/min), X1 = distance (m), E = error; (b) Y = 0.628 - 0.09 X1 - 0.07 X2 + E, where Y = productivity (m3/min), X1 = distance (m), X2 = height (m), E = error
THE INFLUENCE OF MAGNITUDE AND NUMBER OF FLOOD CASES FOR UNIT HYDROGRAPH CALCULATION TO DESIGNED DISCHARGE ACCURATENESS Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 3 No. 1 (2015): Journal Balanga Edisi Januari-Juni 2015
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

Various methods can be used to predict design discharge, such as unit hydrograph theory. Problem to be coped with is the number of flood case required to derive the unit hydrograph for obtaining a unit hydrograph that represents a watershed and to obtain accurateness of certain design discharge. Subject of this study is based on four watersheds, two in the Province of Daerah Istimewa Yogyakarta: Code and Gajahwong watersheds, and two in the Province of Jawa Tengah: Upstream Progo and Bogowonto watersheds. Unit hydrograph representing a watershed is obtained by averaging the results of unit hydrograph analysis on several flood cases occurs in the studied watershed, in which this study uses the unit hydrograph. Accuracy analysis of unit hydrograph is carried out by comparing design discharge resulted from used unit hydrograph application and referred design discharge reference, which is the discharge of used unit hydrograph result on the most flood cases and analysis result of measured maximum discharge frequency. Results of this study show a tendency that larger number of flood cases used to derive the unit hydrograph implies smaller peak of the resulted unit hydrograph and more accurate designed discharge calculation. To obtain less than 10% relative error on the designed discharge for the outmost numbers of flood cases, it requires at least 10 flood cases with spesific discharge between 0.40 to 1.10 m3/s/km2. Designed discharge resulted from unit hydrograph indicates over estimated as well as under estimated tendency for various period to maximum discharge of the frequency analysis with relatively short length of data (<10 years).
PLS MODEL FOR THE PRICE APPROACH OF CONCRETE SAND MATERIAL Yulin Patrisia; Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 5 No. 1 (2017): Journal Balanga Edisi Januari-Juni 2017
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

This study aims to determine the factors that influence the pricing of sand concrete material in a project site and make an approach model to determine the price of relevant construction materials. The study was conducted through literature study and field survey to obtain primer data and secondary data. Approach model to fix the price of sand material by using PLS analysis. The result of research stated that there are several factors influencing the price of concrete sand material, namely economic factor, location factor, material resource factor, transportation factor, and regulation factor and government policy. The approach model to determine the price of concrete sand material shows that the transportation factor has an effect on the price of concrete sand material, while the least dominant variable is regulation factor and government policy.
METODS OF HOUSING CONTRUCTION STEPS IN PALANGKA RAYA CITY Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 5 No. 2 (2017): Journal Balanga Edisi Juli-Desember 2017
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

Palangka Raya urban population growth is currently increasing, it impacts also the economy and the need for proper residence. This situation led to the increasing need for shelters that can be seen from the increasing filing of housing loans. This study will examine the application of housing development procedures in producing a housing product that will be transferred to consumers in a good quality product in the area of Palangka Raya. In the context of this study, development housing procedures is one of the quality systems that can be applied to residential construction project supply chain to produce a quality housing. A primary issue in this study is what is the description of procedures system on the housing development appropriate pattern and how can it be applied based on the conditions of existing resources in the City of Palangka Raya. Areas studied are middle-class residential population, in this case are consumers and housing developers in the city of Palangka Raya, who will be interviewed and filled out questionnaires that were made, and then drew the conclusion after obtaining the desired data. According to the results of the questionnaire, it can be concluded that the developers do not provide good service quality, while buyers of residential do not get the quality of housing they want. The results of this study is to get a quality house and fit in the city of Palangka Raya which made the stages as follows: identification of land ? material selec on ? land clearing ? soil heaping phase I ? bowplank installation ? founda on holing ? moun ng cerucuk Galam ? founda on assembling and casting ? founda3on sloof assembling and cas3ng ? soil heaping phase II ? adobe and sills installation. Based on construct validity results done by experts/specialists from the questionnaire that was analyzed, then obtained the validity of 88 that is in the category valid. This means that housing development procedures can be used as a standard concept of quality of housing construction type 36 which matches in Palangka Raya. Their housing development procedures is able to improve the quality of housing in the city of PalangkaRaya in this case the structure more robust and not easily cracked.
EMPOWERING COMMUNITIES OF RUBBER TANK GROUPS THROUGH THE APPLICATION OF LIQUID SMOKING IPTEX AS A MATERIAL FOR LATEX LITI VILLAGE, CENTRAL KAHAYAN DISTRICT, DISTRICT OF PULANG PISAU DISTRICT, CENTRAL KALIMANTAN PROVINCE Revianti Coenraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 6 No. 2 (2018): Journal Balanga Edisi Juli-Desember 2018
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

Bukit Liti Village is one of the villages which is administratively located in Central Kahayan District, Pulang Pisau Regency, Central Kalimantan Province. Bukit Liti Village has an area of 9,461.10 Ha with population density has reached 925 people. The location is ± 35 km from the capital of Central Kalimantan Province, Palangka Raya and ± 130 km from the town Pulang Pisau, and ± 12 km from the capital district Kahayan Tengah. Villagers in Bukit Liti village welcomed community service activities organized by Palangka Raya University, in the future they hope to conduct regular PKM activities in the village. The output resulting from this PKM activity is 3 units of pyrolysis reactor to produce liquid smoke. The use of liquid smoke as a latex freezer gives a real impact to farmers that are environmentally friendly, effective as latex clotting, preventing and reducing the bad smell of rubber materials and improving the quality of rubber processed materials. At the end of this community partnership program, the implementing team will conduct an evaluation of the implementation by conducting a simple survey of community opinions regarding program implementation, as well as their expectations of future activities.
THE INFLUENCE OF LEARNING MODEL COOPERATIVE SCRIPT TYPE ON STUDENT LEARNING OUTCOMES IN THE MATERIAL OF IDENTIFYING THE TILE FLOOR AND WALL CONSTRUCTION ENGINEERING GRADE XI STONE AND CONCRETE (TKBB) SMKN 1 PALANGKA RAYA ACADEMIC YEAR 2014/2015 Chandra Edward L.Gaol; Revianti Coenraad
PARENTAS: Jurnal Mahasiswa Pendidikan Teknologi dan Kejuruan Vol. 1 No. 1 (2015): Journal Parentas Edisi Januari-Juni 2015
Publisher : Jurusan Pendidikan Teknologi Dan Kejuruan

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Abstract

Based on observation on the Field Experience Practice and dialogue with subject teachers of Finishing Buildingof SMK-1 Palangkar Raya, it is obtained information that the majority of student learning outcomes is still lack as well as lack of learning tools, guidance and input from teachers and common learning model is unusual because usually only describe the learning is still common that students are less effective and less active in learning. Based on these problems, this study applied a model Cooperative Script in hope of making a better student learning outcomes and the students learn more effectively and actively during the learning process in the study of building finishing subject with material identifying the type of floor and wall tiles. This study uses quantitative research as this research aims to do research on quantitative variables X and Y by using a sample of the population with the conclusions drawn by statistical analysis. The subjects of the research were students of grade XI Stone and Concrete Construction Engineering SMK-1 Palangka Raya which consists of 26 students. This research was conducted in December 2013 - January 2014. The data is taken from pretest and posttest (performed prior to treatment and after the script models), which is obtained through the evaluation test with multiple choice questions as many as 20 questions, and learning outcome data were obtained from the results of the test, it ends with t-test. The results showed that cooperative learning model Scripts can improve student learning outcomes. This increase is shown from the data about the test results of pretest and posttest before treatment and after being given treatment, its normality and its reliability with the results of the analysis tcalculated is 24.5 and ttable is 2.06 (tcalculated>ttable) so the conclusion is average score of pretest prior to treatment is 33.2 and an average score of 77.3 after treatment. Thus cooperative learning model Scripts can improve learning outcomes of students significantly and can be developed more in the future.
THE USING OF ADOBE FLASH MEDIA ON THE STUDY INTEREST OF TENTH GRADE STUDENT OF TKBB ON THE SUBJECT BUILDING CONSTRUCTION AT THE SMKN-1 PALANGKA RAYA 2014/2015 Sakresna Putra Nadea; Revianti Coenraad
PARENTAS: Jurnal Mahasiswa Pendidikan Teknologi dan Kejuruan Vol. 1 No. 2 (2015): Journal Parentas Edisi Juli-Desember 2015
Publisher : Jurusan Pendidikan Teknologi Dan Kejuruan

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Abstract

T Based on the observation done by the researcher during PPL II Semester VII Academic Year 2014/2015 in the tenth grade of TKBB at the SMK Negeri 1 Palangka Raya, it was showed that there were some students were lacked of attentions. This is due to the learning media used was used too often repeatedly which made the students felt bored and lacked of attention on the learning activity. From the above problem, it was needed to find a new learning media to rise the interest, excitement and interesting. By using the Adobe Flash media, it was hoped the study interest of the student will emerge. This research used quantitative method approach with correlation type with variable x (adobe flash media) as the influencing variable and variable y (study interest) as the influenced variable. The sample in this research was a total sample since all of the population (24 students) was involved. Data collecting instrument used a questionnaire which referred to likert scale. After the instruments tested, and stated valid to be used in collecting data, then the data will be tested again to fulfill the analysis conditions. If the data deemed eligible, the variable x and y will be analyzed by using correlation analysis namely Product Moment Pearson. It was proved that the rhitung> rtablewith significance level of 95% (Calculate 0,741 > r table 0.423) which means Ha “there was a relationship between the use of adobe flash media with study interest of Building Construction at the SMK Negeri 1 Palangka Raya” was accepted with “strong” correlation level. This research also produced the increase in study interest as of 25%with average increase of study interest of 4,09on the subject Building Construction after the using of adobe flash media, this is based on the study interest of Building Construction before the using of adobe flashmedia with average marks 46,04 orthere was 46 % of the interested students above the average mark, increased to 50,13 or 71 %of the interested student above the average mark.
Co-Authors Abdul Rosid Rosid Carles Willianson Chandra Edward L.Gaol Chichilya Kosmawanti Karelius Karelius Rio Rimbawan Sakresna Putra Nadea Wiratno Yulin Patrisia