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All Journal Teknologi dan Kejuruan: Jurnal teknologi, Kejuruan dan Pengajarannya BANGUNAN (Jurnal Berkala Jurusan Teknik Sipil UM) BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Journal Innovation of Civil Engineering (JICE) Jurnal Lingkungan Binaan Indonesia Jurnal Pengabdian Kepada Masyarakat
B. Sri Umniati
Universitas Negeri Malang
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Transportation

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MENINGKATKAN KAPASITAS GAYA GESER SAMBUNGAN BALOK KOLOM BETON BERTULANGAN BAMBU DENGAN MENGGUNAKAN ANGKER MEKANIK BAMBU B. Sri Umniati
ISSN 0852-2480
Publisher : BANGUNAN : Teori, Praktek, Penelitian, dan Pengajaran Teknik Bangunan

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Abstract

Keruntuhan struktur bangunan yang terkena beban gempa sebagian besar disebabkan oleh keruntuhan pada daerah sambungan balok kolom. Sementara bagian balok maupun bagian kolom di luar daerah sambungan masih menunjukkan kinerja yang baik. Untuk itu diperlukan penguatan daerah sambungan balok kolom agar kemampuan struktur menahan gaya gempa dapat dioptimalkan. Penelitian ini bertujuan untuk menginvestigasi karakteristik angker mekanik (headed bar) yang digunakan pada sambungan balok kolom beton bertulangan bambu dari bahan bambu dalam hal kapasitas gaya gesernya. Angker mekanik terdiri dari bagian kepala dan bagian kaki. Pada angker mekanik bambu, bagian kepala berasal dari buku bambu  dengan tebal total 2cm. Bagian kaki terbuat dari 4 bilah bambu, dengan lebar 3cm.
Meredam Kebisingan Pada Bangunan Yang Telah Ada B. Sri Umniati
ISSN 0852-2480
Publisher : BANGUNAN : Teori, Praktek, Penelitian, dan Pengajaran Teknik Bangunan

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Abstract

Salah satu aspek polusi adalah bersumber dari bunyi yang lebih dikenal dengan permasalahan kebisingan, yang dalam hal ini akan menyebabkan gangguan kenyamanan bagi penghuni sebuah bangunan. Aturan AMDAL bagi rencana proyek baru dengan mudah dapat dilaksanakan, akan menjadi suatu permasalahan apabila hadirnya kebisingan muncul setelah bangunan berdiri. Pemecahan permasalahan ini dapat dilakukan dengan berbagai macam cara, namun beberapa hal perlu juga dipertimbangkan, tentu hal ini berkaitan dengan finansial yang akan dikeluarkan di dalam pembenahan kawasan atau bangunan, sehingga apa yang diinginkan oleh kaidah-kaidah kebisingan dapat terpenuhi.
Model Tata Massa Arsitektur Sasak di Pulau Lombok Gatot Adi Susilo; B. Sri Umniati
Jurnal Lingkungan Binaan Indonesia Vol. 10 No. 1 (2021): JLBI
Publisher : Ikatan Peneliti Lingkungan Binaan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1628.382 KB) | DOI: 10.32315/jlbi.v10i01.6

Abstract

Pemahaman nilai-nilai kearifan lokal terutama pada nilai tradisional, penting untuk dipaparkan, agar generasi mendatang tetap dapat menghargai kekayaan leluhurnya. Penelitian ini merupakan deskripsi mengenai model tata massa khususnya rumah adat, yaitu pada Arsitektur Sasak, Lombok. Metode pengamatan dilakukan di sembilan lokasi desa adat yang tersebar di Pulau Lombok, dan hanya enam lokasi yang dapat dijadikan sebagai sampel yaitu: rumah adat Sade, rumah adat Limbungan Barat, rumah adat Limbungan Timur, rumah adat Sembalun, rumah adat Senaru dan rumah adat Beleq Gumentar. Hasil penelitian menemukenali adanya dua jenis tipe penataan massa berdasarkan kondisi lokasi, yaitu pola tatanan massa di area berkontur dan di area yang datar. Tipe bangunan yang dipilih bersesuaian dengan jenis pola tatanan massanya, di mana tipe Bale Mengina diperuntukkan untuk daerah datar, sedangkan tipe Bale Tani diperuntukkan untuk daerah berkontur. Adapun tipe Geleng yang ditemui pada semua tipe tatanan massa, mengalami proses tranformasi bentuk. It is important to explain the values of local wisdom, especially the traditional values, so that the future generations can still appreciate the wealth of their ancestors. This research is a description of the mass system model, especially the traditional houses, in Sasak Architecture, Lombok. Observation was performed on nine location scattered throughout Lombok island. From those nine locations, there were six that could be qualified as samples. Those six are Sade traditional house, Limbungan Barat traditional house, Limbungan Timur traditional house, Sembalun traditional house, Senaru traditional house, and Beleq Gumentar traditional house. By assessing those six samples, it is found that there are two types of massing according to the land condition, which are massing on contoured land and on flat land. The building type are also selected according to the massing type, where Bale Mengina used in flat land and Bale Tani in contoured land. Geleng type, which could be found in all type of massing, experiences form transformation.
Sifat Mekanik Bata Ringan Geopolimer Berdasarkan Rasio Si/AL Fasya Khoirianti Rafrita; Siti Nur Rahmah Anwar; B. Sri Umniati
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 11 No 2 (2023): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2023)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v11i2.6773

Abstract

The use of fly ash or fly ash is still minimally applied in Indonesia. The percentage of fly ash utilization is only 10-12% with 73% on Java Island and 27% on other islands, so there will be an accumulation of fly ash of up to 10.4 million tons per year by 2027. Abundant fly ash can be utilized by making lightweight brick the main composition as a substitute for cement called geopolymer lightweight brick. The fly ash used is class F with mechanical testing based on the Si/Al ratio. This research was conducted to analyze the effect of activator content on mechanical testing consisting of compressive strength, split tensile strength, and modulus of rupture in order to obtain the mechanical properties of lightweight geopolymer bricks. The higher of the activator content, got the greater Si/Al ratio. The ratios at activator levels of 35, 40, and 45% were 2.42; 2.45; and 2.48. The difference between split tensile strength and compressive strength for 35% activator content is 6.45%; 40% is 5.94%; and 45% is 6.04% so it is included in high quality lightweight brick. The level of activator has a significant effect on the compressive strength, split tensile strength, and modulus of rupture. The lower Si/Al ratio results in higher and better compressive strength, split tensile strength, and modulus of rupture.
PENINGKATAN KEWASPADAAN DAN PEMAHAMAN GURU TERHADAP ETIKA PENULISAN KARYA ILMIAH (STUDI KASUS: SD NEGERI 4 KEDOYO KABUPATEN TULUNGAGUNG) M. Mirza Abdillah Pratama; Christian Hadhinata; Kartika Indah Wahyuni; Ummi Afifatul Mufida; Syafa Aqilla Fadya; Julieta Eka Yudho Putri; Siti Nur Rahmah Anwar; Sri Umniati; Prijono Bagus Susanto; Lusty Mustikasari
Jurnal Pengabdian Kepada Masyarakat Vol. 1 No. 3 (2022): September: Jurnal Pengabdian Kepada Masyarakat
Publisher : Sekolah Tinggi Pastoral Kateketik Santo Fransiskus Assisi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpkm.v1i3.19

Abstract

Writing scientific papers is one of the most significant things a teacher can do, especially if they want to advance to functional positions. However, producing scientific papers is a barrier for many teachers, leading to teachers engaging in dishonest behavior while writing scientific papers. The goal of this service is to organize socialization, training, and mentorship for SD Negeri 4 Kedoyo instructors on the importance of ethical issues and codes of ethics in scientific paper writing. This service's implementation is divided into three stages: pre-implementation, implementation, and post-implementation. As a result of this activity, socialization, training, and support in scientific writing with three primary resources, namely plagiarism, paraphrasing approaches, and reference managers, have been implemented. The post-test questionnaire score increased by 42.67% for the plagiarism indicator, 43.18% for the paraphrasing technique indicator, and 47.74% for the reference manager indicator, indicating an increase in SD Negeri 4 Kedoyo teachers' knowledge and understanding of literacy violations, ethics, and the code of ethics in writing scientific papers.
Development of Intensive Apprenticeship Models for Accelerating Certification Isnandar, Isnandar; Suwarno, Eko; Ariestadi, Dian; Umniati, B. Sri; Al Ansyorie, Mohammad Musthofa
Teknologi dan Kejuruan: Jurnal Teknologi, Kejuruan, dan Pengajarannya Vol 44, No 1: Februari 2021
Publisher : Fakultas Teknik Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um031v44i12021p21-27

Abstract

As a consequence of the rapid development of infrastructures, there is a scarcity of availability of skilled labor in construction services, so efforts are needed to accelerate the preparation of experts in the field of construction services. Intensive apprenticeship pattern is a program to accelerate the preparation of construction service workers in increasing the relevance of higher education to the world of work as a purpose in this study. Data analysis used comparative analysis and descriptive statistics. The results of the study show that the existing pattern of internship in the field carried out by the sample universities is that there are two things that have not been widely implemented, namely the provision of insurance and special facilities. While other items related to the implementation of internships have a percentage of more than 50 percent. The apprenticeship patterns that can be implemented include through the process of collaboration, socialization, participant registration, self assessment, matriculation, implementation of internships, appraisal, and granting certificates from the Construction Services Business Entity (CSBE/ BUJK). Whereas Certification is carried out in general through Pre-Internship, Internships, Judicium, Post-Judiciary, Graduation and Certification of Young Experts.
Penambahan Bambu Bulat Pada Balok Beton Pracetak Menggunakan Software Berbasis Elemen Hingga: Analysis of Adding Bamboo Culms on Precast Concrete Using Finite Element Based Software Kurniawan, Eka Yudha; Umniati, B. Sri; Karyadi, Karyadi
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 12 No 1 (2024): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Januari 2024)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v12i1.7252

Abstract

Post-earthquake development in Indonesia is a complex challenge that requires cross-sectoral efforts and support from various parties. Indonesia is prone to earthquakes due to its location on the Pacific Ring of Fire, an active area of earthquakes and volcanic activity. The use of precast concrete has a number of important advantages in earthquake-prone areas but the connection between joints can be a weak point if not done properly. This study will discuss the connection system, connection location, and details. The research method used is numerical analysis using finite element-based software. It is concluded that the connection system used has not been able to reach the capacity of the monolith beam without connection, while the addition of bamboo does not have a significant effect on the bending capacity of the beam.
Performance Based Design: Performance Analysis on Fixed Base Structure and Structures with High Damping Rubber Bearing (HDRB) Maulida, Alfia Salma Mei; Umniati, B. Sri; Sulton, Mohammad; Maulidani, Andra Akmal
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 1 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i1.10112

Abstract

Buildings in Malang City face large lateral load from earthquakes due to seismic activity. One method of reducing the lateral load is to use base isolators. Conventional building design resists lateral load by designing buildings to be elastic or rigid with Strength Based Design criteria. However, elasticity results in larger building elements, stiffness increases the building's exposure to earthquake forces, and Strength Based Design is unreliable in shielding from earthquakes since its recommended to be a minimum design criterion by FEMA P-424. Therefore, more comprehensive design criteria such as Performance Based Design are needed. The objective of this study is to assess the analysis results and performance levels of fixed base structure compared to structures with HDRB, including the effect of rubber thickness and shear modulus. This study starts by modeling a 7-story building with a fixed base structure using ETABS. The results were then used to determine the type of HDRB, from two models with different rubber thickness and shear modulus, for modeling structures with HDRB. Furthermore, the running results of the two structures are analyzed to evaluate the level of performance of the structures based on Performance Based Design criteria. The results showed differences with the reduction of the average period value by 91.51%, the base shear as 36.05% and 33.11% in longitudinal and transverse direction respectively, and the average interstory drift as 54.86% in X-axis and 31.17% Y-axis. The target displacement of the structures with HDRB decreases and the performance levels including the analysis results are improved.
Perbandingan Struktur Tuned Mass Damper dan Struktur Fixed Base dengan Metode Performance Base Design Maulidani, Andra Akmal; Sulton, Mohammad; Umniati, B. Sri; Maulida, Alfia Salma Mei
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 1 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i1.10113

Abstract

Indonesia's location in an earthquake zone with moderate to high intensity increases the urgency of planning high-rise earthquake-resistant buildings. Losses that occur due to the absence of procedures to predict earthquakes properly and accurately, make it important to innovate structural systems and evaluate their performance against earthquakes. This study aims to determine the impact of adding Tuned Mass Damper to buildings viewed from the level of structural performance compared to Fixed Base structures. Performance Base Design based on FEMA 440, is a design that categorizes the target damage to building structures into 4 levels of damage reviewed from the percentage of story deviation to the total height of the structure. Tuned Mass Damper is an innovation in structural systems consisting of mass, springs, and dampers installed to absorb their dynamic response. Pendulum Tuned Mass Damper is a Tuned Mass Damper system using a pendulum swinging relative to the floor motion. The addition of Tuned Mass Damper to Fixed Base type buildings causes a decrease in deviation of up to 19% from the original deviation depending on the mass ratio. This addition also reduces the value of the structural period by up to 9% with the period still below the maximum period standard. In addition, the addition of Tuned Mass Damper also reduces the target value of structural displacement based on FEMA 440 by 52% with the immediate occupancy building performance level.
Numerical Analysis of the Effect of Adding Bamboo Culms on Hollow Composite Concrete Column Structures on Axial Capacity Muhtadi, Sabilul; Umniati, B. Sri; Sulton, Mohammad
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 7, No 1 (2022): EDISI MARET 2022
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v7i1.3188

Abstract

The problem of self-weight in a structure is an important thing to study. This study aims to find a solution to the problem of self-weight by making a hollow column structure. Bamboo is added to the column structure to replace the strength of the concrete volume lost due to voids. The test object consisted of four columns, three hollow columns with the addition of bamboo rods, and one solid column. Variations in the number of bamboo sticks, namely one, two, and four sticks, were inserted into a column with a cross-section of 300x300 mm and a height of 800 mm. The type of bamboo used is petung bamboo with a minimum age of three years with a diameter of ±120 mm. Twelve pieces of bamboo reinforcement measuring 15x10 mm and four pieces of steel reinforcement with a diameter of 10 mm were used as the primary reinforcement. For stirrups, closed stirrups with a diameter of 8 mm are used. The load given to the column is an axial load of 900 kN on the top surface of the column. From the results of the study, the presence of cavities and the addition of bamboo stems in the column caused an increase in the value of the axial deformation, from 0.2675 mm in the Solid Column, then Columns A, B, and C increased to 0.2707 mm, 0.2731 mm and 0.2874 mm respectively.ABSTRAKPermasalahan berat sendiri pada suatu struktur menjadi hal yang penting untuk dikaji. Penelitian ini bertujuan untuk menemukan solusi dari permasalahan berat sendiri dengan membuat struktur kolom berongga. Untuk menggantikan kekuatan dari volume beton yang hilang karena rongga, maka ditambahkan bambu ke dalam struktur kolom. Benda uji terdiri dari empat kolom, tiga kolom berongga dengan penambahan batang bambu dan satu kolom solid. Variasi jumlah batang bambu yaitu satu, dua, dan empat batang,  dimasukkan ke dalam kolom dengan penampang 300x300 mm dan tinggi 800 mm. Jenis bambu yang digunakan yaitu bambu petung berumur minimal tiga tahun dengan diameter ±120mm. 12 buah tulangan bambu berukuran 15x10 mm dan 4 buah tulangan baja berdiameter 10 mm digunakan sebagai tulangan utama. Untuk sengkang, digunakan sengkang tertutup dengan diameter 8 mm. Beban yang diberikan pada kolom berupa beban aksial sebesar 900 kN pada permukaan atas kolom. Dari hasil penelitian, adanya rongga dan penambahan batang bambu pada kolom menyebabkan kenaikan nilai deformasi aksial, dari 0,2675 mm pada Kolom Solid, lalu Kolom A, B dan C berturut-turut meningkat menjadi 0,2707 mm, 0,2731 mm dan 0,2874 mm.
Co-Authors Anang Ansyori Christian Hadhinata Dian Ariestadi Eko Suwarno Fasya Khoirianti Rafrita Gatot Adi Susilo Isnandar Julieta Eka Yudho Putri Kartika Indah Wahyuni Karyadi Karyadi Kurniawan, Eka Yudha Lusty Mustikasari M. Mirza Abdillah Pratama Maulida, Alfia Salma Mei Maulidani, Andra Akmal Mohammad Sulton Muhtadi, Sabilul Pertiwi, Ziza Ayu Puput Risdanareni Siti Nur Rahmah Anwar Susanto, Prijono Bagus Syafa Aqilla Fadya Ummi Afifatul Mufida Wardana, Erik Fadilah Kusuma