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JOURNAL OF APPLIED SCIENCE (JAPPS)
Published by Institut Teknologi Sains Bandung
ISSN : 26567288     EISSN : 26567334     DOI : https://doi.org/10.36870/japps
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Journal of Applied Science (JAPPS) is a collection of scientific articles relating to the field of applied science which includes engineering and design. This journal discusses the scientific development of engineering in the fields of civil engineering, mining engineering, metallurgical and material engineering, petroleum engineering, and engineering in other fields. In addition, it also contains scientific articles in the field of planning such as urban and regional planning and Architecture which is balanced with design in the fields of Product and Interior Design. In the process, this journal involves the reviewer with a minimum doctoral qualification from domestic and foreign universities affilitations. In addition, it also involves observers from industry and the government with appropriate qualifications in the field of review. JAPPS will be published twice a year, in February and August with different topics for each volume. In its future development, JAPPS will be published in two versions: Indonesian and English.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 55 Documents
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Kajian Pengambilan Keputusan Desain dalam Perancangan Rumah Tinggal Wanda Yovita
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 1, No 1 (2019): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v1i1.2

Abstract

Penelitian ini bertujuan mengetahui atribut desain yang paling mempengaruhi keputusan penghuni dalam desain bangunan rumah tinggal. Atribut desain yang ditawarkan kepada responden adalah posisi atau layout ruang, jumlah ruangan, luas ruangan, tampak bangunan, material, fitur utilitas hingga gaya bangunan. Penelitian ini didasari oleh banyaknya wariabel desain pada rumah tinggal. Kabupaten Bekasi merupakan wilayah yang memiliki banyak jumlah perumahan massal yang diproduksi oleh pengembang. Pilihan dalam atribut desain tidak menjadi keutamaan karena kebutuhan terhadap lokasi dan harga menjadi prioritas utama. Penelitian ini melihat preferensi masyarakat khususnya Kabupaten Bekasi terhadap atribut desain. Survei berupa sebaran kuesioner dilakukan terhadap 150 masyarakat yang tersebar di Kabupaten Bekasi. Metode analisis yang dilakukan adalah distribusi frekuensi kelompok mesyarakat tertentu di wilayah yang sama terhadap atribut desain. Berdasarkan informasi yang diperoleh, ditemukan bahwa masyarakat lebih mengutamakan posisi atau layout ruang tertentu dibandingkan jumlah ruangan, luas ruangan dan lain-lain. Penelitian ini selanjutnya dapat dikembangkan untuk memperkaya pengetahuan desain rumah tinggal yang inovatif dari desain dan tetap mempertahankan anggaran. Secara keilmuan, penelitian ini memberikan sumbangan terhadap pengkayaan keilmuan penyediaan perumahan, sedangkan dari sisi praksis, penelitian ini diharapkan akan memberikan pengetahuan solusi alternatif penyediaan perumahan yang tepat sasaran.
Analisis Abrasi Pantai Pada Akses Jalan Bahumbelu – Morowali Sulawesi Tengah Asep Irwan
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 1, No 2 (2019): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v1i2.46

Abstract

Abrasi pantai yang terjadi pada akses jalan Bahumbelu menuju Morowali Sulawesi Tengah saat ini kondisinya sudah mengkwatirkan, lokasi yang berhadapan langsung dengan laut terbuka dan sering terjadi hantaman gelombang laut sehingga dapat mengakibatkan bibir pantai semakin mundur dan masuk ke daratan. Meskipun saat ini dibeberapa titik sudah terpasang oleh tembok laut atau sea wall namun erosi dibeberapa tempat sudah terjadi dan mengakibatkan jalan amblas terutama yang belum diapasang seawall. Tujuan dari penelitian ini adalah melakukan analisis abrasi pantai dengan bantuan program GENESIS, program ini digunakan untuk memprediksikan garis pantai dalam jangka panjang sebagai reaksi terhadap kondisi gelombang pada struktur bangunan pelindung pantai. Prediksi ini dimaksudkan untuk mengetahui perubahan garis pantai yang terjadi dalam kurun waktu tertentu berdasarkan kondisi eksisting sehingga dapat diketahui perubahan garis pantai yang terjadi. Data yang digunakan dalam penelitian ini adalah data hasil pengukuran lapangan yaitu berupa data kedalaman perairan, garis pantai dan data hasil pengolahan gelombang dari data angin. Berdasarkan hasil simulasi yang dilakukan dengan kala ulang 2 tahun perubahan garis pantai terjadi abrasi sebesar 4 meter dan akresi yang terjadi sebesar 3 meter dengan volume sedimen -1360 m3. Nilai negatif pada volume sedimen tersebut menunjukkan terjadinya erosi. Pada area sekitar bangunan pelindung pantai eksisting terjadi perubahan garis pantai sebesar 3,5 meter akresi dan 4 meter abrasi. Selanjutnya hasil simulasi kala ulang 5 tahun dan 10 tahun cenderung meningkat dimana kecenderungan perubahan garis pantai masih mengikuti pola hasil tahun sebelumnya yang artinya pola akresi dan abrasi masih belum pada titik keseimbangan sehingga terjadi perubahan pola perubahan garis pantai baru. Sehingga berdasarkan hasil simulasi GENESIS didapatkan rekomendasi penanganan terhadap ancaman abrasi pada lokasi studi yaitu dengan memperbaiki tembok laut eksisting dan menambahkan struktur pelindung pantai yang dibuat sejajar pantai yaitu Revetment.
Klasifikasi dan Identifikasi Material terhadap Pengendapan Wax pada Sumur Minyak Aries Prasetyo; Sudono Sudono
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 1 (2020): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i1.160

Abstract

The problem in Indonesia, especially for piping problems are generally caused by blockages that interfere with the flow process, these blockages are formed due to the presence of scales or minerals deposited to the pipe wall. Scale formation is due to the alteration of the physical properties of the oil including pour point, viscosity or others. Many technological breakthroughs developed to overcome this problem are with the addition of hot water, the injection of chemical fluids dispersant into crude oil, which serves to lower the pour point of the crude oil that will be in production or use surfactant as inhibitors so that the inner pipe wall will be water wet which can prevent the occurrence of wax deposition on the pipe surface. In subsequent developments the researchers will review by replacing or adding pipe materials with certain materials that are able to inhibit the processing of wax deposits in the pipe walls. By classifying and identifying materials that are able to inhibit the formation of wax on the pipe, it is expected to estimate the design of the pipe string so as not to form wax deposits, such as predicting wax formed at the distance So that the material application can be optimal. Verification of data on tubing will result in supporting data for the determination of the crude oil flow rate with an Excel plot used to determine the rate of wax deposition in tubing. With some selected material is expected researchers are able to determine the best material to handle the problem of wax deposits.
Pemetaan Arah Desain Rice box untuk Pengguna Di Indonesia Wildan Aulia
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 1 (2020): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i1.161

Abstract

In 2011 and 2016, the author had been designed a rice box based on user aspect. The result indicated the change of rice box product design in form of dimension/ load capacity. This indication then followed by continued study in order to find the comprehensive design of rice box development. This research is focused on design mapping based on design direction of rice box that had been done in 2011, 2016 and 2019, also perceptual mapping method on existing rice box products. The aim is to find the tendency user preference to rice box design. The result showed that the significant value for user preference is rice box with capacity of 12 kg and slowly leave the rice box with capacity of 30 kg. This study also argued that there is an implication of rice consumption changing. The result is hopefully could become the reference in rice box design based on mapping result that can be applied by industrial stakeholder.
Studi Eksplorasi Desain Rumah Prafabrikasi Berdasarkan Bentuk Modul Komponen sebagai Alternatif Desain Rumah Sederhana Anjar Primasetra
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 1 (2020): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i1.157

Abstract

The needs for rapid housing construction has become a very important issue nowadays because of very high housing backlog. Housing construction in the community still use conventional construction systems that have many weaknesses, one of it weakness is the problem of delays in construction time that often occurs due to project managerial problems and poor HR capacity. One alternative for accelerating development is the usage of prefabrication method. Prefabrication method allows the creation of a system to speed up the house building construction is commonly called a prefabricated house. The prefabrication industry in Indonesia is less rapidly developing because its components tend to have rigid designs that make it unattractive, and the costs are relatively more expensive when compared to conventional house. There are four types that includes in prefabricated houses that have been known before, they are RISHA, RUMANAGA, DOMUS, and DUBLDOM. The four prefabricated houses have been assessed in terms of building components and design through industrial research and development. This research is aimed to conduct a study of exploration of prefabricated house design by evaluating the weaknesses of prefabricated houses, especially in terms of module shape and components. In addition, it also examines the minimum size of house area needed in fulfilling the size of a modest house according to a literature study from previous research. From the evaluation results, the prefabricated house design is then formulated in several design alternatives to look for the possibility designs that can be developed. From the results of the study, the size of the module developed to explore the design is to use modules with multiples of 30 cm with a minimum size of the module is 2.4 m x 2.4 m and the maximum size of the module is 3 m x 3 m. Meanwhile, for the area of the house building that was developed there were three alternatives area of the house chosen, they are: small type (28.8 m2), medium type (36 m2), large type (43.2 m2) with minimal house needs, they are: gathering space (living room/room family/kitchen), bedroom, service room (bathroom), and terrace. It is expected that the results of design exploration will be an alternative design for the development of simple home designs.
Analisis Fisik dan Mekanik pada Pengembangan Panel Komposit Limbah Serbuk Kayu Siswanti Zuraida; Sastita Pratiwi
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 1 (2020): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i1.162

Abstract

This research discusses about comparison, testing, and analyzing composite materials for develop the building panels for lightweigh-wall applications made from wood-industrial waste materials. Wood sawdust is used as a composite cement mixture as a binder of all materials with the mixture 0%, 5%, 10%, 15%, and 20% of total weight. This research uses quantitative methods with blocks as a sample sizes 10cm x 3cm x 1cm. The test includes flexible test, porosity test, and composite walldensity test to find out mechanical and physical properties of composite material. The result of this research shows that the usage of wood sawdust as a mixture for making composite panel with 0.4 water-factor at 28 days-age get the optimum value at 15% of mixture variation with flexibility of 7.18 MPa, density 1.61 kg/m³ and compressive strength of 58.42, MPa. These results indicate that the wall panel meets the requirement of SNI 03-0349-1989 with concrete steel-brick level IV as a non-structural brick. Based on these results, it can be concluded that composite panel can be used on the wall as an effort to reduce the impact of the ruins of the building, and reduce the danger as a disaster mitigation effort.
Optimalisasi Pemanfaatan Ruang Luar Kampus ITSB Deltamas Melalui Penelitian Persepsi dan Harapan Sivitas Akademik Esti Galuh Arini
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 1 (2020): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i1.158

Abstract

Many college campuses in Indonesia are designed so that the academic civitas, especially students, feel at home in their activities. The length of stay of students on campus is one important factor in supporting the success of the learning process. Therefore, the design of the campus outdoor space in accordance with the expectations of its users must be considered to support this. For the case study, research was carried out at the Bandung Institute of Technology and Science (ITSB) in the City of Deltamas, Cikarang, West Java. In the near future ITSB Deltamas will have two new buildings: the Container Building as an additional classroom and the Student Dormitory Building, in addition to the Main Campus Building which is the place for all current academic activities now. However, the campus outdoor space has not been well planned, so the use of the space has not been optimal. Optimizing the use of offcampus space is obtained through research of perceptions and expectations aimed at formulating the needs and desires of the academic civitas of ITSB Deltamas by finding the types of activities and facilities that best suit the needs and desires of its users. The results of this study are the design criteria of the ITSB Deltamas outdoor space which can be a recommendation in the field of outdoor space supply planning as an integral part of future campus planning. It is expected that by creating programs and design criteria that meet the needs and desires of the ITSB Deltamas academic civitas as end users, it will create an outdoor campus space design that is responsive to wants and needs (responsive), has emotional ties (meaningful), and can be used by all users (democratic).
Identifikasi Distribusi Beban Sedimentasi pada Intake DAM dan Reservoir PLTA (Studi Kasus: PLTA Cirata, Purwakarta – Jawa Barat) Asep Irwan; Ari Wicaksono; Firda Aulia Khairin
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 1 (2020): Journal Of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i1.159

Abstract

Reservoirs in Indonesia are almost inseparable from the problem of sedimentation. Sedimentation issues are important in reservoir operations, including those that affect reservoir life. One of them is in the PLTA Cirata which experienced a high amount of sedimentation, based on the results of research by BPWC in 2017 the value of sedimentation was 1.96 million m3/year. The results obtained 1,565,844.51 m3 / year so that when compared with this value has a difference between 394,155.49 m3 / year, this occurs because of differences in the sedimentation calculation method. The research method uses the MIKE 21 Module (Flow Model), this research can provide information related to the sedimentation load in the PLTA Cirata. Sediment load that occurs in the intake area of the modeling results is from the Cikundul watershed with a maximum flow value in one year in 2018 of 716.14 m3/s occurred in April. As for the thickness of sediment occurs first 1-month simulation results in the location of each estuary is between 0.01 to 0.15 m for the location of the dam area of 0.01 to 0.03 m. The thickness of sediments in the Cirata area at the location of the river mouth is around ± 1.8 m / year and at the dam around ± 0:36 m / year. Types of sediment in each river mouth obtained 21.21% sand, 78.48% silt, and 0.31% gravel, for the dam area obtained 24.49% sand, 75.08% silt, and 0.43% gravel. It can be concluded that sedimentation entering the Intake area is removing sediment from each watershed namely Cikundul, Cibalagung, Cisokan, Citarum, and Cicendo.
Kajian Perubahan Nilai Konduktivitas Termal pada Bata Ringan dengan Penggunaan Crude Palm Oil (CPO) sebagai Bahan Penyimpan Kalor Lia Laila; Asep Yunta Darma
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 2, No 2 (2020): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v2i2.181

Abstract

Indonesia is the largest producer of Crude Palm Oil (CPO) in the world. The use of CPO is mostly for edible oils and biofuels. Even though CPO potential is huge, the development of CPO in other forms is still limited. CPO has a melting point of 25˚C - 50˚C which is suitable to be develoved in the environment of Indonesia. This characteristic allows CPO to be used as phase change material. This study examines the use of CPO as a material to reduce the thermal conductivity of light bricks. The idea is to make the brick as a building material has the ability to maintain room conditions from fluctuative ambient temperatures. The results showed that the addition of effective CPO to reduce the thermal conductivity of light bricks was 2.5 to 7.5 ml per 160 cm3.
Pemanfaatan Sludge dengan Campuran Black Liqour dan Tempurung Kelapa sebagai Bahan Pembuatan Biobriket Njoman Manik Susantini; Rohmi Oktariani
JOURNAL OF APPLIED SCIENCE (JAPPS) Vol 3, No 1 (2021): Journal of Applied Science (JAPPS)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36870/japps.v3i1.227

Abstract

Process industries such as the pulp and paper industri produce solid waste (sludge) which can actually be utilized, one of which is by turning it into biobriquettes. In this research, biobriquette will be made from sludge with a mixture of black liquor and coconut shell. In this research, the raw material ratio is used as the independent variable, while the fixed variable is the drying time of the biobriquette. This research used the value of calorific, moisture content and ash content as dependent variables. This biobriquette making uses 6 variations of composition with sludge as the dominant material. The calorific value, ash content and moisture content of this biobriquette will be compared with coal. The calorific value of biobriquette with a variation of 60% sludge- 5% black liquor- 35% coconut shell (variation F) had the highest calorific value, namely 4543 cal / g. This value of 4543 cal / g is higher than the standard according to Permen ESDM No.47 / 2006, where the standard in Permen ESDM No.47 / 2006 is 4400 cal / g. For moisture content, this F variation has the lowest water content, namely 54.59%. In the F variation also, the resulting biobriquette ash content was the lowest, namely 5.74%.

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