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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur International Journal of Science and Engineering (IJSE) 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 Journal of Economic, Business and Engineering (JEBE) Journal of Computers and Digital Business Jurnal Teknik Sipil
Nuroji Nuroji
Departemen Teknik Sipil, Fakultas Teknik, Universitas Diponegoro Semarang
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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STUDI KOMPARASI ANTARA PRACETAK MASIF DAN FLY SLAB STUDI KASUS : STRUKTUR GEDUNG RUSUNAWA SURAKARTA Aria Wirawan; Budi Wicaksono; Nuroji Nuroji; Windu Partono
Jurnal Karya Teknik Sipil Volume 2, Nomor 4, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1455.9 KB)

Abstract

Fly slab is one of the precast concrete slab technological development that has been researched and patented by Ir . Sulistyana in 2011. The concept is how to reduce the mass of precast concrete slab with makes ribs on the concrete slab. To minimize the volume of concrete plate and while maintaining tensile area to makes the style transfer mechanism of concrete to reinforcement or otherwise, are expected to reduce the mass of the structure without reducing strength.Comparative study will be conducted in the final project based on Planning of Building Construction Rusunawa in Surakarta, Central Java 2013. This comparative study is done by compare the results of the structural design Rusunawa existing Surakarta and ready to build using conventional precast concrete massive, with a new structure plan Rusunawa Surakarta with using fly slab as material plate, beam and column structural elements using conventional concrete.Based on the analysis results, showed reduction in the volume of concrete and reinforcement elements beam and coloumn Rusunawa Surakarta structure is 20,25% and 6,3 %. Reduction reaction in the vertical structure of the Rusunawa Building in Surakarta is 16,93%.
BETON DENGAN SUBSTITUSI SEMEN BERBASIS TERAK NIKEL Nuroji Nuroji; Supriyadi Supriyadi; Han Ay Lie; Sie Alexander Patrick Subagyo
Rekayasa Sipil Vol. 16 No. 1 (2022): Rekayasa Sipil Vol.16. No.1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.01.4

Abstract

This research studied the effect of nickel-based cement substitution in concrete to analyze its behavior. The percentage of substituted nickel-slag was 10%, 20% and 30% to the cement weight. The mechanical properties studied were the compression f'c and tensile fMR stresses at the ages of 14, 28, 42 and 56 days. The data were analyzed and the visual observation of the fractured plans were addressed to determine the failure modes. The research concluded that the nickel-slag cement reduced both the compressive and tensile strength as a function of the substituted content, the decrease process followed a linear path. It was found that the strength of nickel-slag concrete cannot be defined at 28 days due to a prolonged chemical process.
Studi Eksperimen Perilaku Lentur Papan Bambu Lapis Dengan Jenis Bambu Petung Nuroji; Sukamta; Nicolaus Iyowau
Siklus : Jurnal Teknik Sipil Vol. 7 No. 1 (2021)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v7i1.5088

Abstract

Bambu merupakan tanaman jenis rumput-rumputan yang mudah tumbuh dengan waktu pertumbuhan yang relatif cepat dan dapat dipanen pada usia 3-4 tahun tanpa harus menanam ulang. Meskipun bambu mempunyai sifat fisik dan mekanik yang baik, tetapi pemanfaatan bambu sebagai material konstruksi masih sangat terbatas. Pengembangan material bambu sebagai material konstruksi diharapkan dapat mereduksi penggunaan kayu yang selama ini telah dieksploitasi secara masif. Paper ini menjelaskan hasil kajian eksperimental material bambu dan papan bambu lapis. Papan bambu lapis tersusun atas tiga layer dan setiap layer terbentuk atas bilah-bilah bambu yang tersusun secara paralel. Layer 1 dan 3 merupakan layer permukaan dengan arah memanjang papan, sedangkan layer 2 merupakan bagian tengah papan yang membentuk sudut a terhadap layer 1 dan 3 yaitu 30°, 45° dan 90°. Hasil pengujian tarik menunjukkan bahwa semua bilah bambu berperilaku getas, bagian luar mempunyai kekuatan dan kekakuan yang lebih tinggi dibanding bagian dalam dan ruas bambu merupakan perlemahan dari bilah bambu. Pengujian lentur papan bambu lapis dilakukan dengan four point bending, kapasitas dan kekakuan papan bambu lapis dipengaruhi oleh sudut a dengan nilai optimal 29,33°. Sedangkan kekakuan lentur rata-rata papan bambu lapis sebesar 71% dari penampang teoritis dengan dimensi yang sama untuk bilah bambu luar.
Method of Buildings Structural Vulnerability and Geometry Form Designs Evaluation Towards Earthquakes With The SVA Architectural Design Livian Teddy; Gagoek Hardiman; N. Nuroji; Sri Tudjono
Journal of Architectural Design and Urbanism Vol 2, No 2 (2020): May 2020
Publisher : Department of Architecture, Faculty of Engineering, Universitas Diponegoro, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1129.66 KB) | DOI: 10.14710/jadu.v2i2.7577

Abstract

In the process of architectural design, there is no special method employed by architects to evaluate buildings’ structural vulnerability and building geometry form designs towards earthquakes. Therefore, the alternative is adapting the existing method called SVA-Retrofit. JBDPA and Matsutaro Seki developed this method, and then the author adapted this method now called SVA Architectural Design. In the process of adaptation, deep literature review was conducted in order to acquire the adaptation results of the SVA-Architectural Design. These results can furthermore be an early prediction of structural vulnerability toward earthquakes that eventually leads to finding solutions for building designs or conducting detailed analysis done by structure experts.
The New Method in Calculating Columns and Beams Dimensions That Meets Requirements of The Strong Column-Weak Beam and Non-Soft Story Livian Teddy; Gagoek Hardiman; N. Nuroji; Sri Tudjono
Journal of Architectural Design and Urbanism Vol 1, No 2 (2019): March 2019
Publisher : Department of Architecture, Faculty of Engineering, Universitas Diponegoro, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1383.18 KB) | DOI: 10.14710/jadu.v1i2.4492

Abstract

Situated at an earthquake prone area, buildings planning in Indonesia must implement earthquake resistant building principles. One of these principles is determining dimensions of columns and beams in the process of architectural designing.This act eventually affects the behaviour of the strong column-weak beam and the probability of bending failure due to soft story. At present time, there are no simple rules architects can use in calculating the dimensions of beams and columns that meet the criteria for strong column-weak beam and non-soft story. This paper is an effort to provide an input to the architects in designing the dimensions of the columns and beams. This research is a review result of three theories namely: 1). The theory of columns and beams preliminary design, 2). The theory of the strong column-weak beam concept, and 3). The theory of soft story and column slenderness. Those theories were then synthesized into a spreadsheet. To meet the criteria for strong column-weak beam and non-soft story, the following procedures must be done : 1). Determine the columns’ dimensions according to 0.15% of the columns’ cumulative tributary area, 2). Determine the beams’ dimensions according to 1/12 of the beams’ span and the beams’ plastic modulus, 3). Determine the columns’ dimensions and the columns’plastic modulus, 4). Determine the columns’ height based on the column slenderness criteria, and 5). Compare the columns plastic modulus and the beams plastic modulus and check whether they meet the criteria “the columns’plastic modulus ≥ 1.2 * the beams’ plastic modulus”.
Pengaruh Air Rob Terhadap Struktur Bangunan Tua Nuroji Nuroji
JTERA (Jurnal Teknologi Rekayasa) Vol 5, No 2: December 2020
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v5.i2.2020.311-318

Abstract

Gedung Ex. Mega Eltra merupakan salah satu gedung konservasi di Semarang yang dibangun pada sekitar tahun 1857-1860 dan telah mengalami kerusakan struktur yang parah akibat pengaruh lingkungan, penurunan muka tanah, dan cuaca. Namun, serangan air laut terhadap degradasi material khususnya kekuatan beton menjadi perhatian dalam penelitian ini. Penurunan muka tanah di kota lama Semarang membuat bangunan mengalami penurunan pada fondasi, bahkan sering sampai di bawah permukaan tanah sekitar yang membuat bangunan terendam. Genangan air pada bangunan yang memiliki kandungan salinitas, klorida, dan sulfat dapat menurunkan kekuatan beton melalui kapilaritas dan kontak langsung dengan udara yang tercemar klorida dan sulfat. Tiga lokasi kolom beton Lantai-1 dan 2 dibor dengan mata bor 50 mm hingga kedalaman kurang lebih 225 mm dari permukaan kolom. Bore log 225 mm dipotong menjadi tiga buah benda uji yang mewakili bagian luar, tengah dan bagian dalam, selanjutnya benda uji tersebut diuji untuk mengetahui kuat tekan beton. Hasil uji kuat tekan menunjukkan bahwa beton Lantai-2 lebih baik dari Lantai-1, dan kuat beton bagian luar lebih kecil dari pada bagian tengah, dan jalur tengah lebih kecil dari pada bagian dalam. Penurunan kekuatan beton akibat kontaminasi klorida dan sulfat dapat terjadi melalui kontak udara dan kapilaritas. Pengaruh air laut terhadap penurunan kuat beton melalui kapilaritas adalah 23,51 % dan penurunan kuat beton m­­­­­­elalui udara pada Lantai-1 210 % lebih kuar dibanding Lantai-2.
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 : Department of Civil Engineering, 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 (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.
Co-Authors Adhyta Narendra Winarno Afdholi Afdholi Aktorina, Wahyu Alfred Nobel Pakpaham Andika Yudha P Antonius Antonius Ardidawa, Variandi Aria Wirawan Aries Susanty Arif Hidayat Ay Lie Han Bagas Indra Cahyo 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 Eko Riyanto Riyanto Erika Yulianti Gagoek Hardiman Hadi Wibowo Hadi, Nofiar 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 Akhis Thoyfurrohman Muhammad Amin Cakrawijaya Muhammad Amin Cakrawijaya Nicolaus Iyowau Nizami, Chazaidhan AlFahd Novia Puspitarini, Novia Nurhuda, S.T., M.T., Ph.D., Ilham Purwanto Purwanto Putra, Ryan Dwiyana Rahma Nindya Ayu Hapsari Ramadhan, Syauqi Thoriq 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 Yulita Arni Priastiwi Priastiwi