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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Ilmiah Teknik Sipil International Journal of Science and Engineering (IJSE) TEKNIK MEDIA KOMUNIKASI TEKNIK SIPIL JURNAL KARYA TEKNIK SIPIL Rekayasa Sipil Journal of Regional and City Planning Jurnal Teknik Sipil Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Teras Jurnal Potensi : Jurnal Sipil Politeknik Civil Engineering Dimension JTERA (Jurnal Teknologi Rekayasa) SIKLUS: Jurnal Teknik Sipil Journal of Architectural Design and Urbanism Jambura Journal of Electrical and Electronics Engineering Jurnal Sisfotek Global CHAIN: Journal of Computer Technology, Computer Engineering and Informatics
Nuroji Nuroji
Departemen Teknik Sipil, Fakultas Teknik, Universitas Diponegoro Semarang
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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ANALISIS WAKTU SIKLUS PENGECORAN LANTAI GEDUNG BERTINGKAT Ujang Ruslan; Nuroji; Windu Partono
Potensi: Jurnal Sipil Politeknik Vol 15 No 1 (2013): Potensi: Jurnal Sipil Politeknik
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v15i1.4754

Abstract

Pada pelaksanaan struktur atas bangunan gedung bertingkat dengan beton yang dicor di tempat, diperlukan bekisting dan perancah yang bertingkat-tingkat untuk memenuhi aspek kecepatan siklus konstruksi. Dalam menentukan waktu siklus pengecoran lantai pada gedung bertingkat ini, digunakan metode analisis. Dalam analisis waktu siklus pengecoran lantai ini, bekisting dan perancah dimodelkan dengan menggunakan dua dan tiga tingkat lantai. Struktur bangunan gedung bertingkat yang ditinjau adalah bangunan standar dengan panjang bentang antar kolom maksimum 8 meter, dan campuran beton menggunakan beton normal tanpa bahan tambah. Berdasarkan hasil kajian menunjukan bahwa penerapan waktu siklus pengecoran lantai dengan bekisting dan perancah dua tingkat lantai, dimulai dari 10 hari pada saat lantai "i - 2" telah berumur 20 hari. Sementara dengan bekisting dan perancah tiga tingkat lantai, waktu siklus pengecoran lantai dimulai dari 6 hari pada saat lantai "i - 3" telah berumur 18 hari.
Evaluasi dan Analisis Struktur Beton pada Jembatan Kalikuto di Ruas Jalan Tol Batang Semarang Indriyantho, Bobby Rio; Susanty, Aries; Sumardi, Sumardi; Nuroji, Nuroji
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 29, Nomor 1, JULI 2023
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v29i1.54785

Abstract

Kekuatan struktur suatu jembatan menjadi faktor yang sangat penting untuk keamanan dan keselamatan pengendara terutama di ruas jalan tol. Pemeriksaan secara berkala terhadap kesehatan bangunan jembatan perlu dilakukan, salah satunya evaluasi terhadap struktur beton eksisting. Penelitian ini mengevaluasi dan menganalisis struktur beton pada Jembatan Kalikuto yang merupakan bagian dari Jalan Tol Batang Semarang. Kombinasi dari destructive dan non-destructive test (DT dan NDT) seperti pemetaan kekuatan beton menggunakan core drill dan hammer test, kualitas kepadatan beton menggunakan Ultrasonic Pulse Velocity (UPV), serta konfigurasi tulangan di dalam beton menggunakan rebar scanner. Sementara itu, karbonasi dan korosi terhadap material beton juga dilakukan evaluasi. Kekuatan tarik beton terhadap cabut angkur juga dianalisis menggunakan software metode elemen hingga. Secara keseluruhan, kondisi struktur Jembatan Kalikuto masih sangat baik dioperasikan untuk jalur transportasi darat hingga masa layan bangunan rencana, yaitu kuat tekan sesuai dengan spesifikasi, kepadatan beton berkisar antara 4356,67 – 5275,33 m/s, konfigurasi tulangan sesuai dengan as built drawing, tidak terjadi karbonasi dan lebih 90% struktur tidak menunjukkan indikasi korosi. Cabut angkur diprediksi tidak akan terjadi karena gaya tarik tidak melampaui hasil simulasi. Perawatan secara berkala diperlukan untuk menghindari struktur jembatan dari hal-hal yang dapat menurunkan kekuatan betonnya.
Finite Element Analysis of The Effect of Fiber Content on The Flexural Strength of SFRC Beams with Steel Rebars Ilham Nurhuda; Blinka Hernawan Prasetya; Nuroji Nuroji; Yulita Arni Priastiwi
Civil Engineering Dimension Vol. 26 No. 2 (2024): SEPTEMBER 2024
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.26.2.101-110

Abstract

This research aimed at studying the effect of fiber content on the flexural strength and behavior of steel fiber reinforced concrete (SFRC) beams with steel rebars. The study employed finite element (FE) analysis to simulate the behavior of SFRC beams. The simulation results of the FE model were validated against experimental data. Subsequently, the validated model was utilized to analyze the strength and crack patterns of SFRC beams with steel rebars in comparison to conventional RC concrete beams without fibers. The parametric study indicates an average 9% increase in RC beam capacity for every 1% increment in fiber volume fraction. Moreover, this study reveals more substantial effects of steel fibers on beams with low reinforcement ratios. Crack analysis shows that cracks in the SFRC beams are distributed more evenly compared to plain RC beams at regions with the same bending moment, indicating enhanced strength to sustain loads, reduced deflection, and improved beam ductility.
Decision Support System Model for College Kartu Indonesia Pintar (KIP) Scholarship Recipients Using the C4.5 Decision Tree Method and Simple Additive Weighting (SAW) Hadi, Nofiar; Rizkiawan, M. Asep; Moedjiono, Moedjiono; Nuroji, Nuroji
JURNAL SISFOTEK GLOBAL Vol 14, No 2 (2024): JURNAL SISFOTEK GLOBAL
Publisher : Institut Teknologi dan Bisnis Bina Sarana Global

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38101/sisfotek.v14i2.14395

Abstract

The KIP-Kuliah Scholarship is an Indonesian government program that is used to help high school students (SMA) or equivalent who are less capable but have academic potential in financing education in college. In this study, the problem limitation or scope of research is at Prof. DR. HAMKA Muhammadiyah University College in the Management Study Program. In each year the selection of scholarship acceptance often changes criteria, because of the frequent changes in scholarship criteria each year users often experience problems in selecting KIP-Kuliah scholarship recipients. Decision Support System (SPK) is a solution to assist in decision making. The purpose of this research is to assist in decision making in determining scholarship recipients in accordance with existing criteria. The method used in this research is using Decision Tree C4.5 to determine the weight of the KIP-Kuliah scholarship criteria and the Simple Additive Weighting (SAW) method is used to determine the ranking of scholarship recipients. In this study, researchers used 3 criteria, namely the amount of parents' income, the number of dependents, and the interview test scores. The results of the analysis of the calculations using the Decision Tree C4.5 and Simple Additive Weighting (SAW) methods and the results of the selection of college KIP scholarships consisting of the criteria for the amount of parents' income, the number of dependents and the interview test, the 12 students who deserve college KIP scholarships are students who get the highest preference scores, namely M11, M3, M6, M4, M14, M1, M5, M12, M10, M2, M7, and M9. In conclusion, the use of a Decision Support System with the Decision Tree C4.5 and Simple Additive Weighting (SAW) methods is effective in helping determine the recipients of the KIP-Kuliah scholarship in accordance with predetermined criteria.
Pemanfaatan Batu Pumice Dalam Mengurangi Penurunan Performa Beton Pasca Kebakaran Thoyfurrohman, Muhammad Akhis; Cahyo, Bagas Indra; Yulianti, Erika; Nuroji, Nuroji; Priastiwi, Yulita Arni
Teras Jurnal : Jurnal Teknik Sipil Vol. 12 No. 1 (2022): Volume 12 Nomor 1, Maret 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i1.569

Abstract

Abstrak Beton yang mengalami kebakaran pada suhu 400ËšC akan mengalami degradasi kekuatan hingga kuat tekan sisa 58,40% Hal ini akan mempengaruhi kualitas/kekuatan struktur beton tersebut dan akan menyebabkan beton menjadi getas, dan memungkinkan struktur mengalami kegagalan. Diperlukan upaya proteksi pasif kebakaran dengan menggunakan material yang memiliki ketahanan terhadap api. Salah satu material yang memiliki ketahanan terhadap api yang baik adalah batu pumice. Penelitian ini bertujuan untuk mengetahui nilai kuat tekan dan laju penurunan kekuatan beton pumice yang menggunakan Pasir Muntilan sebagai agregat halus akibat perubahan suhu pembakaran pada 27°C, 300°C, dan 600°C. Penelitian menggunakan 45 buah benda uji silinder beton berukuran diameter 15 cm dan tinggi 30 cm. Dengan variasi penggantian batu pumice 0% , 25%, 50%, 75% dan 100% dari volume agregat kasar dan Faktor Air Semen (FAS) sebesar 0,5. Pengujian kuat tekan dengan alat compression saat umur 28 hari. Hasil penelitian ini menunjukkan bahwa suhu pembakaran mempengaruhi kuat tekan beton pumice dengan pasir Muntilan pada semua komposisi proporsi. Semakin tinggi suhu pembakaran maka semakin besar penurunan yang terjadi. Besaran penurunan kuat tekan akibat kenaikan suhu pembakaran berkisar antara 0,16% hingga 55,38% lebih lambat dibandingkan dengan beton tanpa menggunakan batu pumice Kata kunci: Beton, Batu Pumice, Performa Beton  Abstract Concrete that has been burned at 400° C will experience degradation to a residual compressive strength of 58.40%. This will affect the strength of the concrete structure and will cause the concrete to become brittle, thus allowing the structure to fail. Then it will require passive fire protection by using materials that have some resistance to the fire. One material that has the potential to create fire resistance is pumice stone. The purpose of this study was to determine the value of compressive strength and the rate of reduction in compressive strength of Muntilan sand pumice concrete due to the changes in combustion temperature of 27ËšC,300ËšC, and 600ËšC. In this study, used a 45 pieces concrete cylinder with a diameter of 15 cm and a height of 30 cm. with variations of pumice stone proportion of 0%, 25%, 50%,75% and 100% of the volume of coarse aggregate with a water cement ratio of 0.5. Compressive strength test with a compression device at the age of 28 days. The results of this study indicate that the combustion temperature affects the compressive strength of pumice concrete. The higher the combustion temperature, the higher the strength reduction that occurs. The amount of reduction in compressive strength due to an increase in combustion temperature ranged from 0.16% to 55.38% of the control specimens. Keywords: Pumice, Compressive Strength, Temperature
Kombinasi Metode Pembobotan Rank Reciprocal dan Simple Additive Weighting Dalam Pemilihan Tempat Servis Kendaraan Nuroji, Nuroji
CHAIN: Journal of Computer Technology, Computer Engineering, and Informatics Vol. 2 No. 2 (2024): Volume 2 Number 2 April 2024
Publisher : PT. Tech Cart Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58602/chain.v2i2.117

Abstract

The choice of vehicle service place is an important decision for vehicle owners because it will affect the quality of maintenance and service received by their vehicle. Some of the problems that may arise in the selection of vehicle service places include uncertainty in service quality, unaffordable prices, lack of availability of spare parts, and communication problems between customers and mechanics. The combination of reciprocal rank weighting (RR) and simple additive weighting (SAW) methods in vehicle service site selection can improve accuracy and objectivity in decision making. The RR method is used to derive the relative ranking of each alternative based on the decision maker's preference for certain criteria, while the SAW method is used to weigh and combine the weights of criteria in a structured manner. The ranking results gave a rank 1 result with a value of 0.9256 obtained by TR Service Place, rank 2 with a value of 0.8291 obtained by the AS Service Place, and rank 3 with a value of 0.7884 obtained by DW Service Place.
Data Center Room Monitoring Based on Temperature and Humidity with Internet of Things Rizkiawan, M. Asep; Ramza, Harry; Nuroji, Nuroji; Sofwan, Agus
Jambura Journal of Electrical and Electronics Engineering Vol 6, No 2 (2024): Juli - Desember 2024
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v6i2.23344

Abstract

The idea of the Internet of Things (IoT) encompasses the application of technologies such as sensors and software to an object for the purpose of communicating, controlling, connecting, and exchanging data with other devices while connected to the Internet. In this study, the IoT concept developed was used to monitor and regulate conditions within the data center. The development method used is the life cycle method of system development. The development process involved modifying the Arduino Uno with an esp8266 microcontroller and a DHT-22 sensor to detect temperature and humidity in real time. The testing of IoT development was done using the black box and white box methods. Research results show that the prototyped IoT network can operate well and successfully improve data center performance. In addition, users can also access the system through websites and mobile applications to facilitate the monitoring process.
Co-Authors Adhyta Narendra Winarno Afdholi Afdholi Aktorina, Wahyu Alfred Nobel Pakpaham Andika Yudha P Antonius Antonius Aria Wirawan Aries Susanty Arif Hidayat Asshidiqie, Muhammad Rony Ay Lie Han Bagus Hario Setiadji Bambang Riyanto Bambang Riyanto Bernard Bayu Baskoro Blinka Hernawan Prasetya Bobby Rio Indriyantho Budi Wicaksono Cahyo, Bagas Indra Daniel Erlanda David Mulyawan Prayogo Dea Nika Alvianti Gagoek Hardiman Hadi Wibowo Hadi, Nofiar Han Ay Lie Hardi Wibowo Hery Suliantoro Himawan Indarto Ilham Nurhuda Ilham Nurhuda Iswandi Imran Jumani Arso Livian Teddy M Agung Wibowo M. Asep Rizkiawan Mardani Rizki Anggoro Moedjiono Moedjiono Mohamad Sahari Besari Mohamad Sahari Besari, Mohamad Sahari Monica Devi Muhammad Amin Cakrawijaya Muhammad Amin Cakrawijaya Nicolaus Iyowau Novia Puspitarini, Novia Purwanto Purwanto Putra, Ryan Dwiyana Rahma Nindya Ayu Hapsari Ramza, Harry Rangga Maulana Rohman, Muhamad Arif Rudi Yuniarto Adi Sahari Besari Sie Alexander Patrick Subagyo Sofwan, Agus Sri Rejeki Laku Utami Sri Tudjono Sri Tudjono Sukamta Sukamta Sumardi . Sumirin Sumirin Sumirin Sumirin Supriyadi Supriyadi Thoyfurrohman, Muhammad Akhis Ujang Ruslan Vanessa Nurmalita Windu Partono Windu Partono Wirajati Ramadhianto, Wirajati Yulianti, Erika Yulita Arni Priastiwi