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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil BANGUN REKAPRIMA JITEK (Jurnal Ilmiah Teknosains) Rancang Bangun Rang Teknik Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Pengembangan Rekayasa dan Teknologi Spektrum Sipil Teknika Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Jurnal Teknik Sipil Institut Teknologi Padang Techno Abdi Teknoyasa Jurnal Civil Engineering Study Jurnal Pengabdian KOLABORATIF International Journal of Sustainable Building, Infrastructure and Environment
Trias Widorini
Fakultas Teknik, Jurusan Teknik Sipil, Universitas Semarang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Veterinary Other

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The PERENCANAAN ULANG GEDUNG PASAR JOHAR MENGGUNAKAN STRUKTUR FLAT SLAB: Johar Market Building Redesign Using a Flat Slab Structure Zhafira, Talitha; Aishah, Aina Firdha; Firdaus, Berlianna Adhistya; Widorini, Trias
Spektrum Sipil Vol 9 No 2 (2022): SPEKTRUM SIPIL
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/spektrum.v9i2.263

Abstract

Gedung Pasar Johar Selatan Semarang merupakan proyek pembangunan gedung empat lantai di daerah Purwodinatan Kota Semarang. Semula Gedung Pasar Johar direncanakan menggunakan metode struktur portal biasa (kolom, balok, dan pelat). Penelitian ini memodifikasi menggunakan struktur flat slab. Redesign menggunakan flat slab diharapkan mampu menahan beban gempa dan tetap aman strukturnya. Analisa perhitungan struktur menggunakan program ETABS v.18.1.1. Hasil penelitian menggunakan desain baru menggunakan tebal flat slab atau pelat 250 mm, tinggi drop panel sebesar 150 mm, dengan ukuran kolom 800x800 mm. Nilai displacement menggunakan flat slab masih aman dengan nilai terbesar 30 mm. Simpangan antar lantai arah x dan y masih dibawah nilai ijin sebesar 58,462 mm artinya redesain pasar johar memenuhi syarat. Kestabilan dari efek P-delta struktur masih dalam keadaan stabil karena nilainya dibawah batas stabilitas struktur 0,0909. Torsi tidak terjadi karena nilai story drift inelastic dibagi dengan simpangan antar lantai dibawah 1,2 dan 1,4.
ANALISIS PERENCANAAN PEMBANGUNAN RUMAH SUSUN MATARAM 11 LANTAI DI SEMARANG: Development Planning Analysis of Mataram Flats 11 Floors in Semarang Daffa Adi Pangestu, Muhammad; Zhafira, Talitha; Hartono, Naufal Fitriansah; Widorini, Trias
Spektrum Sipil Vol 10 No 2 (2023): SPEKTRUM SIPIL
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/spektrum.v10i2.324

Abstract

Kota Semarang adalah ibu kota Provinsi Jawa Tengah yang memiliki luas wilayah sebesar 373,70 km2. Luas kawasan permukiman eksisting di Kota Semarang telah mencapai 16.027,49 Ha dari rencana kawasan permukiman sebesar 20.832,94 Ha. Penelitian ini dilakukan sebagai upaya memaksimalkan fungsi tata guna lahan, khususnya sebagai sarana dan prasarana tempat tinggal di kota Semarang. Metode yang digunakan adalah pengumpulan data primer berupa data tanah dan data sekunder berupa data gempa serta gambar struktur bangunan yang kemudian di analisis dengan bantuan software ETABS V.20. Hasil penelitian ini adalah nilai simpangan antar lantai tertinggi ditinjau dari arah x sebesar 27,758 mm dan arah y sebesar 22,825 mm memiliki nilai di bawah simpangan ijin yaitu 70 mm. Hasil analisis tersebut menunjukkan bahwa simpangan antar lantai pada struktur gedung ini memenuhi persyaratan yang telah ditentukan oleh SNI-1726-2019 sehingga gedung rumah susun ini aman dari beban gempa. Nilai torsi ratio memiliki hasil di bawah 1,2 dan 1,4 sehingga berdasarkan SNI-1726-2019 struktur gedung rumah susun ini tidak memiliki ketidakberaturan torsi.
STUDI ANALISIS TULANGAN SENGKANG ULIR PADA GEDUNG T UNIVERSITAS SEMARANG DENGAN MEMBANDINGKAN PERATURAN SNI GEMPA 2012 DENGAN SNI GEMPA 2019 Crista, Ngudi Hari; Widorini, Trias; Anggraini, Lila
Bangun Rekaprima Vol. 7 No. 1 (2021): April 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.93 KB) | DOI: 10.32497/bangunrekaprima.v7i1.2585

Abstract

Karena adanya peraturan gempa yang mengalami revisi dan perilaku gempa setiap zona selalu mengalami perubahan hampir setiap tahun dikarenakan adanya pergeseran lempeng dan bebatuan serta akibat aktivitas vulkanik, maka suatu peraturan gempa terbaru muncul dan diberlakukan, dengan adanya peraturan terbaru menyebabkan perlunya revisi atau peninjauan ulang bangunan-bangunan yang sudah berdiri untuk dikaji ulang menggunakan peraturan tersebut. Dari adanya gempa menyebabkan banyak terjadi kerusakan pada struktur bangunan. Setelah dilakukan kajian yang mendalam tentang hal ini, bahwa gempa besar yang terjadi ternyata karena percepatan batuan dasar lebih besar daripada percepatan batuan dasar yang telah ditetapkan dalam peta gempa SNI 03-1726-2012. Berdasarkan penemuan tersebut menyebabkan peta gempa SNI 03-1726-2012 dinilai sudah tidak sesuai lagi di-aplikasikan sebagai pedoman perencanaan struktur tahan gempa. Dengan adanya peraturan terbaru (RSNI 03-1726-2019) maka semua bangunan yang direncanakan dengan peraturan lama (SNI 03-1726-2012) perlu adanya evaluasi perhitungan pengaruh gempa bangunan lama terhadap peraturan terbaru.Pada penelitian ini analisis dilakukan dengan menggunakan tulangan Ulir baik untuk tulangan Pokok maupun tulangan geser. Berdasarkan penelitian yang telah dilakukan dengan menganalisa prilaku struktur antara kedua peraturan tersebut pada bangunan gedung perkuliahan gedung T Universitas Semarang didapat Jumlah tulangan longitudinal ulir mengalami kenaikan sebesar 7 % dan kebutuhan tulangan Sengkang ulir mengalami kenaikan 12% , Sedangkan jumlah kebutuhan tulangan longitudinal ulir mengalami kenaikan pada tulangan lapangan sebesar 33 % , serta tulangan Sengkang ulir mengalami kenaikan 40 % .sehingga berdasarkan hasil tersebut bahwa gaya geser mengalami peningkatan yang cukup tinggi, sehingga evaluasi terhadap bangunan gedung ”“ gedung lama perlu adanya pengkajian ulang.
Evaluasi Mutu Beton dengan Metode Non-Destructive Test pada Kolom Gedung Parkir Menara USM Prasetya, Bagas; Zhafira, Talitha; Sagara, Nandhika Jihan; Widorini, Trias; Sitorus, Mentari S.
Jurnal Teknik Sipil Institut Teknologi Padang Vol 11 No 1 (2024): Jurnal Teknik Sipil institut Teknologi Padang
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jts.2024.V1101.040-45

Abstract

Semarang adalah salah satu kota dengan kepadatan penduduk yang tinggi. Hal ini membuat lahan di kota Semarang menjadi sempit sehingga pembangunan gedung parkir dan basement menjadi salah satu solusi yang bisa ditawarkan oleh masyarakat modern di zaman sekarang. Tujuan penelitian ini adalah untuk  mengetahui nilai mutu beton pada gedung parkir dan basement Menara Universitas Semarang apakah sudah sesuai dengan perencanaan. Nilai mutu beton kolom suatu gedung dapat diketahui dengan melakukan uji kualitas fisik bangunan dengan cara tidak merusak beton (non-destructive) atau metode NDT, yaitu dapat menggunakan metode dan peralatan pengujian rebound number (Schimidt Hammer Test). Menara Universitas Semarang merupakan salah satu gedung termuda di Universitas Semarang yang dibangun pada tahun 2019 dan saat ini telah berusia ±4 tahun. Gedung Menara Universitas Semarang sendiri memiliki 10 lantai dengan kolam renang pada lantai paling atasnya. Penelitian ini dilakukan menggunakan metode pengumpulan data primer dan sekunder, di mana data primer yang didapat adalah dengan cara melakukan survey atau uji tes non-destructive secara langsung pada kolom gedung parkir dan basement menara Universitas Semarang. Sedangkan data sekunder didapatkan dengan cara meminta data kepada instansi  terkait. Penelitian ini dilakukan pada 20 titik, di mana setiap titik diberikan pemukulan sekitar 10 pukulan. Dari perencanaan gedung parkir dan basement menara Universitas Semarang menggunakan mutu kolom beton K-375 atau setara dengan fc’ 31,125 MPa. Hasil penelitian ini mendapatkan nilai kuat tekan beton yang sudah sesuai dengan perencanaan.
Analysis of Column and Beam Minimum Reinforcement Requirements on the Building Structure of the Faculty of Psychology, University of Semarang Widorini, Trias; Crista, Ngudi Hari; Anggraini, Lila
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 2, No 1 (2021)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v2i1.8418

Abstract

In formulating the seismic design criteria for a building at ground level or determining the amplification of the peak earthquake acceleration from the bedrock to the ground for a site, the site must be classified first. Site class assignment must be carried out through field and laboratory soil investigations. Site Class consists of SA (hard rock), SB (rock), SC (medium soil), SE (soft soil) and SF (special soil). SNI 1726: 2019 with various classes of SB, SC, SD and SE sites. From the analysis results, it is found that the variation of soil site classes has an effect on the area of minimum reinforcement requirements, except for the logitudinal reinforcement requirements of the lower support beam for site class variations, the value is fixed. The variation of soil site classes has a significant effect on the area requirements of the longitudinal reinforcement in the column. The largest requirement for column longitudinal reinforcement is Soft Soil Site Class (E) and the smallest requirement is Rock Site Class (B).
Pengabdian kepada Masyarakat melalui Optimalisasi Detail Engineering Design (DED) Struktur Masjid Berbasis Standar Konstruksi Nasional Nur Fithriani Fatma Cholida; Thalita Zhafira; Iryan Dwi Handayani; Trias Widorini
ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Vol. 4 No. 3 (2025): Agustus 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/abdikan.v4i3.6118

Abstract

The mosque is the center of religious and social activities of the community. Its construction requires careful technical planning. This will ensure that the building is safe, efficient, and in accordance with Standar Nasional Indonesia (SNI). The purpose of this community service activity is to provide technical assistance during the process of preparing the Detail Engineering Design (DED) of the Assafi Qolbu Mosque building located in Mranggen District, Demak Regency. Using an expert-driven design approach, the assistance was carried out by a team of Civil Engineering lecturers at Semarang University. Site surveys, needs analysis, technical working drawings, and selection of structural materials according to standards were all work carried out. The activity resulted in a one-story building structure technical document (DED) that included the planning of strip and footplate foundations, sloofs, columns, beams, floor slabs, and light reinforced roof structures. A well-designed DED ensures that the durability of the building is guaranteed to meet the aspects of structural safety and material efficiency. This activity not only creates design documents, but also increases partners' understanding of the importance of involving experts in the construction of mosques, especially their structures. It is expected that this assistance will serve as an implementative model for the construction of worship facilities based on Indonesian National Standards.
ANALISIS PENGARUH KUALIFIKASI KONTRAKTOR TERHADAP KUALITAS PEKERJAAN PROYEK KONSTRUKSI DI KOTA SEMARANG Lila Anggraini; Diah Rahmawati; Trias Widorini
Jurnal Pengembangan Rekayasa dan Teknologi Vol. 1 No. 2 (2017): November (2017)
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jprt.v13i2.935

Abstract

The law on construction services has been in effect for seventeen years, but the world of construction services in Indonesia has not been very exciting, especially for construction workers for large-scale and high-tech projects. Indonesia's workforce is still considered not to have capability comparable with foreign construction workforce.To realize the success of quality buildings and able to function as planned, needed human resources of good quality as well.And the professional ability of the construction workforce is evidenced by the possession of a skill or skill certificate. As mandated by the Construction Services Act No. 18 of 1999 article 9. that any individual employed by a business entity as a construction planner or supervisor of a particular construction or energy in a construction business enterprise shall have a certificate of expertise.Based on the research factors that most affect the application of Construction Services Act of 1999 memnai certificate of competence of experts on the implementation of construction work.is a factor of human resources such as education experts, experience, training, age and ownership of certificates. Another factor is the method of implementation of work such as coordination and decision making, while the political factor is the regulation of rules and leadership factors, such as motivation and awards To know how far and how big the role of these construction service experts in achieving the success of construction work, so much in demand by both local and foreign workers, it is deemed necessary to research the role of experts in contributing to the success of a construction work.Therefore it is necessary to develop further research on the readiness of experts in terms of the fulfillment of the requirements and expertise, in order to obtain the predicate of professional engineers or professional engineers through certification of expertise held by professional associations that followed.
PERBANDINGAN TULANGAN LENTUR PADA GEDUNG FAKULTAS PSIKOLOGI UNIVERSITAS SEMARANG DENGAN MEMBANDINGKAN PERATURAN SNI GEMPA 2012 DENGAN SNI GEMPA 2019 Ngudi Hari Crista; Trias Nani Widorini; Lila Nani Anggraini
Jurnal Pengembangan Rekayasa dan Teknologi Vol. 4 No. 2 (2020): November (2020)
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jprt.v16i2.2992

Abstract

Given the last few years there have been many large earthquakes that have occurred in Indonesia. For example, the Aceh earthquake in 2004, the Yogyakarta earthquake in 2006, the Padang and Bengkulu earthquake in 2007. The earthquake caused a lot of damage to building structures. After conducting an in-depth study on this matter, that the large earthquake that occurred turned out to be due to the acceleration of the bedrock which was greater than the acceleration of the bedrock that had been determined in the SNI 03-1726-2012 earthquake map. Based on these findings, the earthquake map SNI 03-1726-2012 was deemed no longer suitable to be applied as a guideline for earthquake resistant structure planning. Because a new earthquake regulation appeared and was enforced, this resulted in the need for revision or review of existing buildings to be reviewed using the latest regulations. With the existence of the latest regulations (RSNI 03-1726-2019), all buildings planned with the old regulations (SNI 03-1726-2012) need an evaluation of the calculation of the earthquake effect of the old buildings against the latest regulations. Therefore, after conducting research by comparing the structural behavior between the two regulations in the USM psychology faculty lecture building in the T building by comparing SNI 03-1726-2012 with SNI 03-1726-2019, the comparison results obtained in the column of longitudinal reinforcement requirements experienced an increase of 50% and the need for shear reinforcement has increased by 12.04%, while for the comparison of beams the need for longitudinal reinforcement has increased in field reinforcement by 25%, and the shear reinforcement has increased by 25%
Modulus Elastisitas Beton Geopolimer Berbasis Fly ash PLTU Tanjungjati B Jepara Anik Kustirini; Edy Susilo; Trias Widorini; Bambang Purnijanto
Teknika Vol. 19 No. 1 (2024): Maret
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/teknika.v19i1.8748

Abstract

Beton geopolimer adalah beton yang dibuat tanpa menggunakan semen. Sebaliknya, fly ash—bahan sisa pembakaran batu bara di pembangkit listrik tenaga uap—dimanfaatkan (PLTU). Pada penelitian ini fly ash dari PLTU Tanjungjati B Jepara digunakan untuk menguji modulus elastisitas beton geopolimer sehingga diperoleh pemahaman yang jelas mengenai sifat-sifatnya. Tiga benda uji silinder 15/30 digunakan untuk menguji modulus elastisitas beton. Rata-rata modulus elastisitas beton geopolimer umur 28 hari sebesar 20.560,797 MPa. Model modulus elastisitas dan kuat tekan beton geopolimer dengan persamaan Ec = 12761 (f’c) 0,4657 diperoleh dari hasil regresi daya. Validasi dilakukan dengan korelasi, angka R2 = 0,9944 mendekati satu, artinya hubungan kuat tekan dengan modulus elastisitas sangat kuat atau valid. Nilai modulus elastisitas hasil laboratorium berbeda 0,338% dengan nilai modulus elastisitas SNI dan selisih nilai modulus elastisitas Hukum Hookes sebesar 0,018%. Grafik hasil laboratorium dan Hooke berimpit
Pendampingan Perencanaan Desain Intake Air Bersih Desa Kalikayen Kecamatan Ungaran Timur Kabupaten Semarang Sri Wanto; Bambang Tutuko; Son Haji; Trias Widorini; Kukuh Wisnuaji Widiatmoko
Jurnal Pengabdian KOLABORATIF Vol. 4 No. 2 (2026): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v4i2.15070

Abstract

Clean water availability is a fundamental necessity that requires reliable Water Supply System (SPAM) infrastructure. Kalikayen Village, Ungaran Timur District, Semarang Regency, possesses considerable water resources that have not been optimally utilized due to the absence of an adequate technical design for a water intake structure. This community service program aimed to enhance the community's capacity in planning a clean water intake structure while developing a preliminary design concept to support the village water supply system. The program employed advocacy, training, and technical assistance through a participatory approach, including field surveys, existing condition assessments, technical training, discussions, field observations, and evaluation using pre-tests and post-tests involving 20 participants. The evaluation results indicated a significant improvement in participants' knowledge, with the average score increasing from 52.6% in the pre-test to 86.0% in the post-test, representing an improvement of 33.4 percentage points. In addition to strengthening community capacity, the program produced technical outputs, including a preliminary intake design, recommendations for a safer intake location, field survey data, and supporting documents that can serve as the basis for preparing a Detail Engineering Design (DED) and cost estimation. Overall, the program successfully improved community capacity while providing technical planning documents to support the development of a safe, reliable, and sustainable village water supply system.
Co-Authors Adib Zamroni, Muhammad Adji, Dhimas Sasongko Ahmad Agus Shofyan Muzani Ahmad Hakim Bintang Kuncoro Aishah, Aina Firdha Anik Kustirini, Anik Annisa Zahrotun Na'imah Anugerah Bayu Hermawan Ari Endang Jayati Azkiya, Safrina Dina Bagas Setiawan Bambang Purnijanto Bambang Purnijanto Bambang Tutuko Budiono Joko Nugroho Crista, Ngudi Hari Daffa Adi Pangestu, Muhammad Desy Ratna Arthaningtyas Deva Eryan Sugya Mawada Diah Rahmawati DIAH RAHMAWATI Diah Rahmawati Edy Susilo Firdaus, Berlianna Adhistya Handayani, Fitrian Handayani, Iryan Dwi Hartono, Naufal Fitriansah Iin Irawati Ilham Salman Ariq Krisno, Gama Aji Kukuh Wisnuaji Widiatmoko Lila Anggraini Marcellino, M. Irgi Masvika, Hendra Mentari S Sitorus Muhammad Latif Muhammad Latif Mukti Wiwoho Nur Fithriani F. Cholida Pamungkas, Wardana Galih Paninggiran, Herman Prasetya, Bagas Prita, Prita Purnijanto, Bambang Purnijanto, Bambang Purwanto Purwanto Purwanto Purwanto Purwanto Putri, Marsela Ragil S, Ramadito Herva Sagara, Nandhika Jihan Salahudin Mohammad, Jeihan Saputra, Andhika Rizal Saputra, Dicky Alga Seno Suharyo Son Haji Sri Wanto Talitha Zhafira Tatas Transinata Thalita Zhafira Wijayanti, Khofifah Windarto, Yusuf Arif Wiwoho, Mukti Yusuf, Faisal Yusuf, M. Bakhtiar