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Tinjauan Perilaku Dinamik Balok T dengan Perkuatan CFRP Jenis Wrap (Studi Eksperimental, Balok Beton Bertulang) Muda, Johanes B; Supriyadi, Bambang; Muslikh, Muslikh; Siswosukarto, Suprapto
Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil Vol. 13/No.2/Desember 2020
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1122.971 KB) | DOI: 10.23917/dts.v13i2.13056

Abstract

Penggunaan CFRP sebagai pilihan dalam revitalisasi komponen struktur saat ini sangat banyak digunakan dan di kembangkan. Penggunaan CFRP bertujuan untuk meningkatkan kapasitas lentur dan geser balok, namun pada penerapannya penambahan CFRP berpengaruh terhadap perubahan kekakuan dan pola keruntuhan balok tersebut. Perilaku dinamik dari komponen struktuktur dalam penelitian ini digambarkan oleh nilai frekuensi alami komponen struktur dalam pengujian lentur dan geser. Penelitian ini menggunakan enam buah benda uji yaitu tiga benda uji balok T dengan perkuatan CFRP wrap pengujian lentur (BC1, BFR1, BFR2) dan tiga benda uji balok T dengan perkuatan CFRP wrap pengujian geser (BCg, BC1g, BC2g). Dari hasil pengujian, penambahan perkuatan CFRP meningkatkan nilai frekuensi alami benda uji BFR1 , BFR2, BC1g, BC2g  berturut-turut sebesar 41.29%, 42.86%, 10.34%, 15%. Peningkatan frekuensi alami ini juga divalidasi dengan adanya peningkatan kekakuan benda uji BFR1 , BFR2, BC1g, BC2g   berturut-turut sebesar 2.08%, 20.50%, 65.68%, 107.2%. Dari hasil pengujian lentur benda uji tanpa perkuatan (BCl) mengalami penurunan nilai frekuensi dari kondisi awal ke kondisi runtuh sebesar 29.8%, lebih besar dari benda uji dengan perkuatan BFR1 (10.33%) dan BFR2 (20.13%). Sedangkan  pada pengujian geser benda uji tanpa perkuatan (BCg) mengalami penurunan nilai frekuensi dari kondisi awal ke kondisi runtuh sebesar 9.58%, lebih besar dari benda uji dengan perkuatan BC1g (7.10%) dan BC2g (6.74%).  Dari data hasil pengujian ini dapat disimpulkan bahwa terdapat peningkatan nilai frekuensi alami balok T dan penambahan kekakuan balok T akibat adanya penambahan perkuatan CFRPwrap pada balok T yang mana dalam kondisi awal hanya bertujuan untuk meningkatkan kapasitas lentur dan geser balok T tersebut.
BENTUK DAN PROPORSI PADA PERWUJUDAN ARSITEKTUR VERNAKULAR BUGIS Sani, Andi Asrul; Supriyadi, Bambang; Rukayah, R.Siti
Jurnal Teknik Sipil dan Perencanaan Vol 17, No 2 (2015): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v17i2.6885

Abstract

This research lifting Vernacular Architectural Bugis with case studies Bola Soba State Watampone as part of the work of Duke ( King ). The issue building design process Bola Soba into focus through all proportions study's components constituent. Base his study , in addition to an understanding of the essence vernacular, the need of understanding also his tectonics, tradition ( build ) Architecture Bugis and rules proportion.the feel aesthetics in architecture is based on the elements and principles of design that can be explained rationally one of which is the principle of proportion. Leaning on his study approach: all characteristics of vernacular ( Bugis ) , visual and numerical portrait (measurement dimension ) objects. Images are visual and numerical reference database for reconstruction  groups object to the graphic data and figures. Analysis of calculation of the ratio  proportion to his assisted Software Microsoft Excel and SPSS ( Statistical Product and Service Solution). The findings of this research form the basic of the ratio of the amount used as a reference for comparison of the parts of the building detail in the building in the city of Bola Soba in Watampone. Proportion 1 : 1.23 with Sulapa Appa element and is believed to be the final findings as the basic for the size calculation of the proportion of the building Bola Soba. Implications of the findings could be early reference ( hypothesis ) , that the work of vernacular architecture Bugis embodiment has a basic size its design. Reference process is certainly still need to be explored with further research, including the work of other vernacular which created by the Duke / King Bugis. In historically, kingdom Bugis had been a formidable kingdom in his day which civilization has its own form of architecture heritage building. There are four great kingdoms that became the Bugis area is the kingdom of Luwu, kingdom of Bone, the kingdom of Soppeng and Wajo.Penelitian ini mengangkat Arsitektur Vernakular Bugis dengan studi kasus Bola Soba Kota Watampone sebagai wujud karya kalangan Bangsawan (Raja).Persoalan proses perancangan bangunan Bola Soba menjadi fokus telaah melalui ke-proporsi-an komponen-komponen pembentuknya.Dasar telaahnya, selain pemahaman tentang esensi ke-vernakular-an, perlu pemahaman pula sisi ke-tektonika-annya, tradisi (membangun) Arsitektur Bugis dan kaidah proporsi.Rasa estetika dalam arsitektur didasarkan pada elemen –elemen dan prinsip-prinsip perancangan yang bisa dijelaskan secara rasional salah satunya adalah prinsip proporsi. Pendekatan studinya bersandar pada : ke-ciri-an vernakular (Bugis), potret visual dan numerik (pengukuran dimensi) obyek. Potret visual dan numerik merupakan database rujukan untuk me-rekonstruksi-kan gugus obyek ke data grafis dan angka. Analisis perhitungan rasio ke-proporsi-annya dibantu perangkat lunak Microsoft Excel dan SPSS (Statistical Product and Service Solution). Temuan penelitian ini berupa besaran rasio dasar yang digunakan sebagai acuan perbandingan bagian-bagian detail bangunan dalam bangunan Bola Soba di Kota Watampone.Proporsi 1:1,23 dengan elemen Sulapa Appa menjadi temuan akhir dan diyakini sebagai dasar ukuran perhitungan proporsi dalam bangunan Bola Soba.Implikasi temuannya bisa menjadi referensi awal (hipotesis), bahwa perwujudan karya arsitektur vernakular Bugis memiliki dasar ukuran dalam proses perancangannya.Referensi ini tentunya masih perlu didalami dengan penelitian lanjutan, termasuk karya vernakular lain yang dikreasi oleh kalangan Bangsawan/Raja Bugis.Secara historis,kerajaan Bugis pernah menjadi kerajaan yang tangguh di zamannya memiliki peradaban tersendiri berupa peninggalan Arsitektur Bangunan.Ada empat kerajaan besar yang menjadi wilayah Bugis yaitu Kerajaan Luwu,Kerajaan Bone,Kerajaan Soppeng dan Wajo. This research lifting Vernacular Architectural Bugis with case studies Bola Soba State Watampone as part of the work of Duke ( King ). The issue building design process Bola Soba into focus through all proportions study's components constituent. Base his study , in addition to an understanding of the essence vernacular, the need of understanding also his tectonics, tradition ( build ) Architecture Bugis and rules proportion.the feel aesthetics in architecture is based on the elements and principles of design that can be explained rationally one of which is the principle of proportion. Leaning on his study approach: all characteristics of vernacular ( Bugis ) , visual and numerical portrait (measurement dimension ) objects. Images are visual and numerical reference database for reconstruction  groups object to the graphic data and figures. Analysis of calculation of the ratio  proportion to his assisted Software Microsoft Excel and SPSS ( Statistical Product and Service Solution). The findings of this research form the basic of the ratio of the amount used as a reference for comparison of the parts of the building detail in the building in the city of Bola Soba in Watampone. Proportion 1 : 1.23 with Sulapa Appa element and is believed to be the final findings as the basic for the size calculation of the proportion of the building Bola Soba. Implications of the findings could be early reference ( hypothesis ) , that the work of vernacular architecture Bugis embodiment has a basic size its design. Reference process is certainly still need to be explored with further research, including the work of other vernacular which created by the Duke / King Bugis. In historically, kingdom Bugis had been a formidable kingdom in his day which civilization has its own form of architecture heritage building. There are four great kingdoms that became the Bugis area is the kingdom of Luwu, kingdom of Bone, the kingdom of Soppeng and Wajo.
Structural Health Assessment of Kretek II Bridge using Enhanced Frequency Domain Decomposition Astalis Ulul Absor, Didib; Aminullah, Akhmad; Supriyadi, Bambang
Journal of the Civil Engineering Forum Vol. 10 No. 2 (May 2024)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.9151

Abstract

The development of infrastructure is growing rapidly in Indonesia. Kretek II bridge is one of the infrastructures built in the country. Dynamics aspects are one of the very important aspects used to validate structural analysis model or being linked to Structural Health Monitoring (SHM) of the bridge. Dynamics properties such as natural frequency, damping ratio, and mode shape also referred as modal parameters. The objective of this research is to determine the modal parameters of Kretek II bridge using Enhanced Frequency Domain Decomposition (EFDD) which is commonly used to extract modal parameters from the acceleration data recorded. Compared to the conventional method, EFDD is very practical and robust in structural health assessment because of its user-friendly uses in the ARTeMIS Modal software. To make sure that the results from EFDD are accurate, numerical modeling is necessary to validate it. This research was conducted using dynamics load test results as data for the modal extraction with EFDD method assisted by ARTeMIS Modal software. Dynamics load test was performed by placing 8 accelerometers in the span and exciting it with impact load from dropped truck on ramp. Modal parameters from the EFDD results are then compared to the numerical modeling results. The first two modes of the EFDD and numerical modeling results consecutively are 3.09 Hz, 3.745 Hz and 3.06 Hz, 3.49 Hz. The EFDD and numerical modeling results are both in agreement with both results having similar mode shape on their first two mode and low error percentage with only 0.89% and 7.17% respectively.
NUMERICAL SIMULATION OF RETROFITTING WITH EXPANSION IN SUPPORT REINFORCE CONCRETE BEAM Purba, Luki Hariando; Simanjuntak, Salomo; Supriyadi, Bambang
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 28, No 2 (2023): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v28i2.5370

Abstract

Beam-strengthening innovations need to be developed considering the frequent occurrence of earthquakes in Indonesia to avoid structural failure. One of the innovations in strengthening existing beams is strengthening by expanding the beam support area. This research aims to determine the behavior of strengthening existing beams. The research methods used are theoretical analysis and finite element analysis. Theoretical analysis and FEA show that strengthening the P1 beam can increase the bending and shear moment capacity by more than 50%. FEA analysis shows that retrofitting of the P1 beam increases stiffness by 45%. Strengthening the P1 beam is also able to avoid failure at the beam-column connection.
ANALISIS FAKTOR PRODUKSI BUDIDAYA UDANG VANNAMEI (Litopenaeus vannamei) DI TAMBAK HDPE (High Density Polyethilene) PULOKERTO PASURUAN Suseno, Dewi Alima Nostalia; Waluyo, Buyung Purnomo; Rahardjo, Sugeng; Surahmat, Djoko; Supriyadi, Bambang; Priono, Bowo
Chanos Chanos Vol 19, No 1 (2021): Chanos chanos
Publisher : Politeknik Kelautan dan Perikanan Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.349 KB) | DOI: 10.15578/chanos.v19i1.9600

Abstract

ABSTRAKUdang vanamei memiliki keunggulan untuk kegiatan budidaya udang antara lain, responsif terhadap pakan/nafsu makan yang tinggi, lebih tahan terhadap serangan penyakit di kualitas lingkungan yang buruk pertumbuhan lebih cepat, serta tingkat kelangsungan hidup tinggi. Pada masa ini pelaku bisnis berlomba-lomba menemukan cara baru untuk mengoptimalkan proses bisnis yang dimilikinya dalam memenangkan persaingan global. Guna pengembangan usaha budidaya tambak udang vannamei di masa yang akan datang maka dipandang perlu untuk melakukan suatu analisis guna keberlanjutan kegiatan usaha tersebut. Penelitian ini akan dilakukan di satu lokasi tambak, yaitu di tambak Pulokerto Pasuruan, milik Politeknik Kelautan dan Perikanan Sidoarjo, dengan menggunakan metode deskriptif. Penetlitian ini bertujuan untuk mengetahui faktor-faktor produksi dan efisiensi harga produksi budidaya udang vannamei, dengan menggunakan 8 variabel bebas, yakni luas lahan (X1), benur (X2), pakan 1(X3), pakan 2 (X4), pakan 3 (X5), supplement (X6), probiotik (X7), tenaga kerja (X8). Hasil analisa yang diperoleh dengan menggunakan SPSS  yaitu faktor-faktor yang mempengaruhi kegiatan produksi budidaya vannamei yakni X1, X2, X3, dan X5. Hasil yang diperoleh dari analisis efisiensi harga produksi yakni X1 tidak efisien, sedangkan X2, X3, dan X5 belum efisien.
BUSINESS FEASIBILITY ANALYSIS CATFISH REARING CULTIVATION (CLARIAS GARIEPINUS) AT THE ROUND POND PT. TIMUR MANDIRI AKUAKULTUR Surahmat, Djoko; Supriyadi, Bambang; Nugraha, Jefry Putri; Suseno, Dewi Alima Nostalia; Ergiyanti, Kharisma
Journal of Management Small and Medium Enterprises (SMEs) Vol 17 No 2 (2024): JOURNAL OF MANAGEMENT Small and Medium Enterprises (SME's)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jom.v17i2.16997

Abstract

Business feasibility analysis needs to be done for new businesses that want to open or are already running to provide information and an overview of what a catfish farming business looks like, whether it is still feasible or not to farmers. The purpose of this study is to determine the pattern of catfish enlargement farming business and determine the feasibility of catfish enlargement farming business from market and marketing aspects, technical aspects, management and organizational aspects, economic and social aspects, environmental aspects, and legality aspects, as well as knowing the financial feasibility of catfish enlargement farming business carried out by PT. Timur Mandiri Akuakultur. Financial feasibility analysis method using the method Net Present Value, Internal Rate of Return, Net B/Cand Payback Period. The results of the analysis on non-financial aspects show that the business is still feasible to run and develop. The results of the financial aspect analysis based on the value of the investment criteria obtained that the business is feasible to run and develop. Keywords: Feasibility Study; Cat Fish Enlargement Discretion; Venture Eligibility Analysis
Efektivitas Penggunaan Aplikasi Examview di SMA PGRI 2 Sampit muhajir, ahmad; Supriatin, Atin; Supriyadi, Bambang; Fathurrahman, Fathurrahman; Fauzannur, Fauzannur
JURNAL KRIDATAMA SAINS DAN TEKNOLOGI Vol 6 No 02 (2024): JURNAL KRIDATAMA SAINS DAN TEKNOLOGI
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/kst.v6i02.1380

Abstract

The objective of this study is to assess the efficacy of utilising the ExamView application in the assessment and evaluation process at SMA PGRI 2 Sampit. The ExamView application has been developed with the specific intention of assisting teachers in the creation of examination questions, the acceleration of the correction process, and the provision of comprehensive analysis of the results. This research employed a descriptive quantitative methodology with a purposive sampling technique, encompassing a sample of 17 teachers and 236 students. The data were collected through the administration of questionnaires, the conduct of observations, and the facilitation of interviews. The findings indicated that the utilisation of the ExamView application has the potential to enhance the efficacy and calibre of the learning evaluation process. Approximately 14 of teachers reported that the application made it easier to create questions and to correct them more quickly. In addition, 177 of students felt that the exams were more structured and that they were more motivated. Nevertheless, challenges remain in terms of enhancing teachers' technological proficiency and addressing infrastructure limitations, such as unreliable internet connectivity. With these improvements, the ExamView application has the potential to make a more pronounced impact on the learning evaluation process at SMA PGRI 2 Sampit. This research underscores the necessity for supplementary training for teachers and enhanced technical resources to fully leverage technology in education
Frozen Baby Octopus (Octopus Membranaceus) Marketing Management Rahardjo, R. Sugeng; Prayoto, Prayoto; Surahmat, Djoko; Supriyadi, Bambang; Suseno, Dewi Alima Nostalia; Kustiandika, Salsabila
Jurnal Ilmiah Ekotrans & Erudisi Vol. 4 No. 2 (2024): December 2024
Publisher : LPPM Universitas Ekasakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69989/s1mp7k24

Abstract

This research aims to determine the marketing management of frozen Baby Octopus (Octopus Membranaceus) at PT. BIN Central Java. And to find out the marketing strategy and marketing mix of frozen Baby Octopus (Octopus Membranaceus) at PT. BIN Central Java. This research aims to analyze marketing strategies in marketing management and to determine the marketing mix in marketing management. The research methods used are descriptive methods, SWOT Analysis, and 7Ps with a quantitative approach based on interviews, observation, active participation, and documents. One form of marketing strategy that can support marketing of products to create consumer satisfaction is the use of a (marketing mix).
PERANAN PEMBAYANGAN PADA COURTYARD TERHADAP PENGENDALIAN SUHU PERMUKAAN (Studi Kasus Gedung Widya Puraya Universitas Diponegoro Semarang) Jantu, Mochamad Athar; Hardiman, Gagoek; Supriyadi, Bambang; Setyowati, Erni
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 4 No. 2 (2016): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v4i2.128

Abstract

ABSTRAK Courtyard merupakan komponen bangunan sejak lampau yang memiliki fungsi sebagai elemen estetika di dalam bangunan juga berperan dalam usaha menciptakan sistem pengkondisian udara dan pencahayaan alami. Sebagai bukaan tentunya penetrasi radiasi matahari langsung ke dalam bangunan tidak dapat di hindari akan tetapi dengan bentuk struktur yang khas dari courtyard ditambah dengan ketersediaan elemen vegetasi akan membentuk bidang-bidang bayangan. Tulisan ini bertujuan untuk memberikan pemaparan hasil penelitian mengenai sejauh mana peranan pembayangan pada courtyard dalam mereduksi peningkatan suhu permukaan akibat dari penetrasi radiasi matahari. Metode yang digunakan pada penilitan ini adalah analisis secara kualitatif terhadap data kuantitatif hasil observasi dan pengukuran langsung terhadap obyek studi. Dari hasil analisis dapat diketahui bahwa variasi bidang pembayangan dan durasi pembayangan pada area courtyard gedung Widya Puraya Universitas Diponego dapat mengendalikan peningkatan suhu permukaan yang dipengaruhi oleh durasi puncak peningkatan suhu permukaan. Kata Kunci : Pembayangan, Courtyard, Suhu Permukaan
Persepsi Konsumen Terhadap Keamanan Dan Kualitas Produk Olahan Perikanan Di Platform Digital: Studi Kasus pada UMKM di Jawa Timur Wartini, Sri; Nugraha, Jefri Putri; Supriyadi, Bambang
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.3699

Abstract

Perkembangan platform digital telah memberikan peluang baru bagi pelaku usaha mikro, kecil, dan menengah (UMKM) produk olahan perikanan dalam memperluas jangkauan pasar. Namun, aspek keamanan dan kualitas produk masih menjadi faktor kunci yang memengaruhi kepercayaan dan keputusan pembelian konsumen. Penelitian ini bertujuan untuk menganalisis persepsi konsumen terhadap keamanan dan kualitas produk olahan perikanan yang dipasarkan melalui platform digital, dengan fokus pada UMKM di Jawa Timur. Metode penelitian menggunakan survei terhadap 150 responden yang pernah membeli produk olahan perikanan secara daring dalam 12 bulan terakhir. Data dikumpulkan melalui kuesioner skala Likert dan dianalisis menggunakan statistik deskriptif serta uji sederhana, meliputi uji korelasi Pearson, t-test, ANOVA, dan Chi-Square. Hasil penelitian menunjukkan bahwa persepsi konsumen terhadap keamanan produk berada pada kategori sedang–tinggi (mean = 3,87), sedangkan persepsi kualitas berada pada kategori tinggi (mean = 3,94). Terdapat hubungan positif dan signifikan antara persepsi keamanan dan kualitas (r = 0,42; p < 0,001). Selain itu, perbedaan persepsi keamanan ditemukan antar platform digital yang digunakan, serta konsumen yang membaca ulasan menunjukkan tingkat persepsi keamanan lebih tinggi dibandingkan yang tidak. Temuan ini mengindikasikan bahwa transparansi informasi keamanan, kualitas kemasan, serta ulasan konsumen merupakan faktor penting dalam membangun kepercayaan dan loyalitas konsumen. Penelitian ini merekomendasikan agar UMKM produk olahan perikanan memperkuat strategi komunikasi digital dengan menekankan aspek keamanan dan kualitas produk guna meningkatkan daya saing di pasar digital.