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All Journal TEKNIK Rotasi MEDIA KOMUNIKASI TEKNIK SIPIL JURNAL KARYA TEKNIK SIPIL Al-Jami'ah: Journal of Islamic Studies Semesta Teknika Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Journal of Geoscience, Engineering, Environment, and Technology Teras Jurnal Turbo : Jurnal Program Studi Teknik Mesin BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks Indonesian Journal of Islamic Literature and Muslim Society Rang Teknik Journal SIKLUS: Jurnal Teknik Sipil KACANEGARA Jurnal Pengabdian pada Masyarakat Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Adabiyyat: Jurnal Bahasa dan Sastra Journal of Mechanical Engineering The International Conference on Education, Social Sciences and Technology (ICESST) Jurnal Pendidikan Indonesia (Japendi) Eduvest - Journal of Universal Studies Warta LPM Jurnal Teknik Sipil Jurnal Polimesin
Sukamta Sukamta
Departemen Teknik Sipil FT. UNDIP Jl. Prof. H. Soedarto SH., Tembalang, Semarang 50275
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EVALUASI PENGARUH TIMBUNAN DAN STOCKYARD PANCANG TERHADAP KEGAGALAN PANCANG (STUDI KASUS: PROYEK JEMBATAN X DI KALIMANTAN) Matheus, Patrick; Hartono, Darwin; Sukamta, Sukamta; Sadono, Kresno Wikan
Rang Teknik Journal Vol 8, No 2 (2025): Vol. 8 No. 2 Juni 2025
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v8i2.6722

Abstract

One of the bridge projects in Kalimantan is built on soft soil. Soft soil has poor bearing capacity, low shear strength and permeability, and high compressibility. One of the substructures of the bridge project, consisting of two spun pile points, experienced failure (exceeding the allowable inclination, indications of breakage at a depth of -8,000 mm, and failure to achieve the planned bearing capacity). The failure occurred after excavation for the pile cap was carried out.The additional load from preloading embankments and a spun pile stockyard, located 20,000 mm and 15,000 mm away, caused lateral deformation in the existing soil. This lateral deformation influenced additional deformation and bending moments in the failed spun piles. An evaluation of the additional load on the spun piles was conducted using the Finite Element Method with Plaxis 2D software. The additional load from the preloading embankments and stockyard was analyzed to determine its impact on the spun piles.The analysis showed that the additional load from the preloading embankments and stockyard caused lateral deformation, leading to deformation and bending moments in the spun piles. However, this additional load alone was not sufficient to cause failure in the spun piles.
Safety Evaluation of Rockfill Dam Based on Seepage Discharge Data Sulistya, Krisna; Sachro, Sri Sangkawati; Sukamta, Sukamta
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 8, No 1 (2023): EDISI MARET 2023
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v8i1.3730

Abstract

The leading cause of failure of an embankment dam is the occurrence of excessive seepage, which triggers piping that can disrupt the stability and safety of the dam. This study discusses the dam's safety against the danger of seepage with a case study of the Jatibarang Dam. The safety evaluation uses V-notch monitoring data during the operational period from 2018 to 2021. The highest seepage discharge recorded during that period was 2,232 lt/sec/m, where the unsafe threshold for seepage based on the dam's height was 0,56 lt/sec/m, so seepage is unsafe. Meanwhile, based on the seepage discharge index (QI) calculation, the QI value is less than one, so the seepage discharge is still safe. Evaluating dam safety against excessive seepage discharge for dams of the same type as the Jatibarang Dam is more appropriate to use the seepage discharge index (QI) threshold because the parameters in the equation are complete.ABSTRAKPenyebab utama kegagalan suatu bendungan tipe urugan adalah terjadinya rembesan berlebih yang memicu piping yang dapat mengganggu kestabilan dan keamanan bendungan. Penelitian ini membahas keamanan bendungan terhadap bahaya rembesan dengan studi kasus Bendungan Jatibarang.  Evaluasi keamanan menggunakan data pemantauan V-notch selama masa operasional tahun 2018 sampai dengan 2021. Debit rembesan tertinggi yang tercatat pada kurun waktu tersebut sebesar 2,232 lt/dt/m, dimana ambang batas tidak aman terhadap rembesan berdasarkan ketinggian bendungan adalah 0,56 lt/dt/m sehingga rembesan dalam kondisi tidak aman. Sedangkan berdasarkan perhitungan indeks debit rembesan (QI) menghasilkan nilai QI kurang dari satu sehingga debit rembesan masih dalam kondisi aman. Evaluasi keamanan bendungan terhadap debit rembesan berlebih terhadap bendungan yang se-tipe Bendungan Jatibarang lebih tepat menggunakan ambang batas indeks debit rembesan (QI) karena parameter pada persamaannya lebih lengkap.
Masalah Test dalam Psikologi dan Pendidikan Sukamta, Sukamta
Al-Jami'ah: Journal of Islamic Studies No 19 (1978)
Publisher : Al-Jami'ah Research Centre

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/ajis.1978.019.26-61

Abstract

Dalam kesempatan ini, kami mencoba membahas tentang test  dalam Psikologi dan Pendidikan, dengan maksud antara lain: Ingin memperkenalkan dan mempopulerkan tentang test dalam psikologi dan Pendidikan, dengan sedikit seluk-beluk yang melingkupinya.Untuk lebih mempopulerkan penggunaan test sebagai alat yang lebih baik untuk mengetahui “human ability and traits” sebagaimana yang terjadi di negara-negara yang telah maju.Untuk merangsang para pecinta dan pemakai alat test, agar supaya berhati-hati, bijaksana dan tidak gegabah dalam menggunakan alat-alat test, sehingga normative dan kerahasiannya dapat terjamin.Kita hendak membangun dan mengembangkan psikologi ditanah air kita; karena boleh dikata bidang ini hamper sama sekali belum terjamah, dan masih mengimport teori-teori dari luar negeru, yang sering kurang sesuai dengan kondisi tanah air kita.Kita hendak meningkatkan suatu test yang telah ada sekarang ini serta berusaha Menyusun test yang telah ada sekarang ini serta berusaha Menyusun test yang baru untuk memenuhi kebutuhan dan permintaan yang selalu meningkat.Dal ini kami kemukakan, karena ternyata perkembangan alat-alat test di Indonesia, tidak semacam lajunya dibandingkan dengan perkembangan alat-alat test di negara-negara yang telah maju, seperti Amerika, Inggris, Belanda, dan negara-negara Barat lainnya.
Implementation of the Smart & Green Building Concept in the UMY Student Dormitory Building Sukamta, Sukamta; Jamal, Agus; Utama, Nafi Ananda; Suryanto, Rudy; Subandono, Bagus; Budiyanto, Gunawan; Suryanto, Arwan
Berdikari: Jurnal Inovasi dan Penerapan Ipteks Vol. 13 No. 2: August 2025
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/berdikari.v13i2.28064

Abstract

The design of student housing in the modern era is not only required to provide functional comfort but also to address the challenges of energy efficiency and environmental sustainability. Universitas Muhammadiyah Yogyakarta (UMY) responds to these needs through the development of a Student Dormitory that adopts the principles of smart and green building. The purpose of this community engagement program is to evaluate the implementation of intelligent and environmentally friendly building concepts from technical, functional, and operational economic perspectives. This program employs a case study method with a descriptive qualitative approach, based on the analysis of building technical documents and a review of relevant national and international scientific literature. The findings show that the integration of digital access control systems (smart access), energy-efficient VRV (Variable Refrigerant Volume) cooling, harmonic filters, solar water heaters, and the use of Panasap Blue Glass has significantly contributed to reducing energy consumption by up to 40%. In addition to enhancing residents’ comfort and security, these technologies also demonstrate potential investment payback within 5 to 7 years. The implications extend beyond cost and operational efficiency, contributing directly to the achievement of the Sustainable Development Goals (SDGs). Furthermore, this program is grounded on the principle of sustainability, emphasizing the long-term utilization of eco-friendly technologies, the principle of benefit, ensuring tangible advantages for students, the university, and the wider community through improved quality of life and reduced carbon footprint; and the principle of economic viability, guaranteeing operational cost efficiency and financial sustainability of the project. The strategic objectives of this community engagement initiative are (1) to establish UMY’s Student Dormitory as a model of environmentally conscious student housing in tropical regions, (2) to promote knowledge and technology transfer on smart and green buildings to other universities, (3) to strengthen UMY’s reputation as a modern campus aligned with the SDGs agenda, and (4) to create an energy-efficient housing ecosystem that contributes to long-term cost savings and improved residents’ well-being. In conclusion, the study indicates that UMY’s student housing model, based on smart and green building principles, is feasible to adopt as a reference for dormitory development in other higher education institutions, particularly in tropical areas
PENGGUNAAN PCC SEBAGAI SUBTITUSI OPC PADA BETON RIGID PAVEMENT DAN PENGARUHNYA TERHADAP MUTU DAN WAKTU IKAT AWAL SEMEN Dianugrah, Rizki; Sukamta, Sukamta; Ay Lie, Han
JURNAL TEKNIK SIPIL Vol 12, No 2 (2023): Volume 12 Nomor 2 November 2023
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v12i2.31182

Abstract

Portland Composite Cement or PCC is an eco-friendly material that has been registered as a green product. In order to support green construction, the use of PCC has begun to be developed, including rigid pavement for road construction in Indonesia. Things that need to be investigated from the use of PCC are the compressive strength and flexural strength behavior for certain rigid pavement concrete qualities and the initial setting time of cement. The use of PCC which is still in the development stage needs to be investigated by substituting it with Ordinary Portland Cement (OPC). In this study, there were 6 variations of substitution, namely 100% OPC, 20% OPC and 80% PCC, 40% OPC and 60% PCC, 60% OPC and 40% PCC, 20% OPC and 80% PCC, and 100% PCC. . The results of the test using the vicat, the higher the proportion of PCC, the lower the normal consistency, so that the less water content is required for the hydration reaction between cement and water to occur. Meanwhile, the higher the proportion of PCC, the higher the initial setting time, so that the cement setting time is slower. In testing the compressive strength of concrete, the higher the proportion of PCC at the age of 28 days, the compressive strength of the concrete tends to decrease. In testing the flexural strength of concrete, the higher the proportion of PCC at the age of 7 days, 14 days and 28 days, the flexural strength of the concrete tends to decrease. Based on the research results, concrete with a higher proportion of OPC has a higher compressive strength and flexural strength than concrete with a higher PPC mixture.
The Influence Of Adding Superplasticizer With Time Interval And Variation Of Water Reduction On The Early Strength And Workability Of Concrete Frediyansyah, Mochammad Tommy; Sukamta, Sukamta; Sulistyowati, Rizki Aulia; Umam, M.Muhtajul; Lie , Han Ay
Eduvest - Journal of Universal Studies Vol. 4 No. 7 (2024): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v4i7.1593

Abstract

Acceleration of early strength of concrete can be obtained by reducing water in the concrete mixture followed by addition of superplasticizer. The application of the addition of superplasticiser to water-reduced concrete mixtures requires innovation in providing a time lag to produce good workability. This study analyzes the effect of giving a time delay when adding superplasticizer followed by reducing water with certain variations on the workability and early strength of concrete. The results of this research are very important for the concrete industry with the purpose of shortening the removal time of formwork and optimizing the construction process. Water cement ratio is adjusted by reducing its volume by a fraction of 10% to 30%, superplasticizer 1% to the weight of cement is added in two stages, during the initial mixing and after one or two hours afterwards. 0.3% retarder was added to control homogeneity during mixing. The test results concluded that the reduction of water that provided the highest increase in concrete compressive strength at 4 days was LN25-1 of 21.94 MPa (87% of the design compressive strength) and LN20-2 of 19.12 MPa (76% of the compressive strength plan). The optimal amount of water reduction at the initial age of the concrete is 20 – 25% of the design water weight. Giving a time lag does not reduce the increase in concrete strength due to the addition of superplasticizer. 
Pemanfaatan sistem informasi untuk manajemen bank sampah di Desa Murangan Triharjo Sleman Dhuhita, Windha Mega Pradnya; Huda, Arif Akbarul; Agusta, Rivga; Sukamta, Sukamta; Wiyana, Satria Hadi; Saputra, Agel; Kristanto, Heru
KACANEGARA Jurnal Pengabdian pada Masyarakat Vol 8, No 1 (2025): Februari
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/kacanegara.v8i1.2577

Abstract

Pengelolaan bank sampah secara manual sering menghadapi berbagai kendala seperti pencatatan transaksi yang tidak akurat, keterbatasan transparansi, dan rendahnya partisipasi masyarakat dalam pemilahan sampah. Kegiatan ini bertujuan untuk mengatasi masalah tersebut melalui penerapan Sistem Informasi Manajemen (SIM) Bank Sampah di Murangan, Sleman. Sistem ini dirancang untuk mencatat transaksi sampah secara digital, memudahkan pengelolaan data nasabah, dan menyediakan laporan otomatis yang transparan. Analisis menggunakan metode tulang ikan dilakukan untuk mengidentifikasi kendala, meliputi aspek manusia, metode, mesin, material, lingkungan, dan manajemen. Hasil pelatihan SIM menunjukkan peningkatan pemahaman tentang pengelolaan bank sampah hingga 81%. Dengan pengimplementasian SIM ini juga meningkatkan transparansi dan akurasi data transaksi. Dengan demikian, penerapan SIM Bank Sampah dapat menjadi solusi efektif untuk memperkuat pengelolaan sampah yang lebih efisien dan berkelanjutan.
STRUT AND TIE MODEL STRUKTUR BALOK TINGGI BERLUBANG Nazila, Kamila Shaomi; Priastiwi, Yulita Arni; Sukamta, Sukamta
Teras Jurnal : Jurnal Teknik Sipil Vol. 11 No. 1 (2021): Maret 2021
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v11i1.362

Abstract

Abstrak Mendesain suatu bangunan tingkat tinggi dengan tidak menggunakan plafon dibutuhkan perencanaan yang ekonomis tanpa mengurangi kekuatan dan keindahan dari bangunan tersebut. Balok tinggi berlubang dengan material struktur beton digunakan untuk menghindari terjadinya sistem utilitas pada suatu bangunan tingkat tinggi dengan tidak menggunakan plafon. Balok tinggi berlubang ini ditinjau menggunakan metode Strut and Tie Model (STM). Untuk mengatasi permasalahan yang ada biasanya para perencana merancang daerah D (Disturbed Region) dengan menggunakan konsep pendetailan berdasarkan aliran gaya, sehingga metode strut and tie merupakan pendekatan yang sesuai untuk menganalisis struktur beton di daerah D. Program analisa struktur digunakan untuk melakukan analisis gaya dalam berupa momen dan geser pada struktur beton balok tinggi berlubang. Hasil analisis yang diperoleh pada struktur beton balok tinggi berlubang yaitu bahwa semakin dekat lubang balok dengan tumpuan maka nilai tulangan lentur akan lebih tinggi dan semakin bertambah pula tulangan gesernya. Kata kunci: Balok Tinggi Berlubang, Daerah D, Metode Strut and Tie  Abstract Designing a high rise building without using a ceilings requires an economical plan without reducing the strength and the art of the building. The deep beam with holes, which have the structure of concrete materials is need to be used to avoid the utility system in a high rise building without ceilings. This deep beam with holes is reviewed by the Strut and Tie Model (STM) method. To solve the existing problems, planners usually design the D region (Disturbed Region) use the concept of detail based on the flow of force. So the strut and tie method is an appropriate method to analyze the structure of concrete at D region (Disturbed Region). The program of analysis structure is used to analyze the internal forces, which are Moment and Shear, in the deep beams with holes' structure. The result of the analysis in the  deep beam concrete with holes is the more position of the hole is close to its pedestal, the value of the Flexural reinforcement will be more increase, and teh Shear reinforcement will be higher too. Keywords: Deep Beam Hollow, D Region, Strut and Tie Model
Analisis Perbandingan Waktu Pelaksanaan Pekerjaan Struktur Bangunan Bertingkat Metode Alumunium Formwork dengan Metode Konvesional Pramudiharto, Aji; Partono, Windu; Sukamta, Sukamta
Jurnal Pendidikan Indonesia Vol. 6 No. 6 (2025): Jurnal Pendidikan Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/japendi.v6i6.8052

Abstract

Penelitian ini membahas perbandingan waktu pelaksanaan pekerjaan struktur bangunan bertingkat antara dua metode bekisting yang berbeda, yaitu metode aluminium formwork dan metode konvensional pada proyek konstruksi Tower Rusun ASN 2. Tujuan penelitian ini adalah untuk mengidentifikasi perbedaan durasi pelaksanaan antara kedua metode tersebut, serta menganalisis faktor-faktor yang mempengaruhi efisiensi waktu dalam pembangunan gedung bertingkat. Metode yang digunakan dalam penelitian ini adalah metode deskriptif kuantitatif dengan pengumpulan data melalui observasi lapangan dan dokumentasi proyek. Hasil penelitian menunjukkan bahwa metode konvensional memiliki durasi pekerjaan yang lebih singkat dibandingkan dengan metode aluminium formwork. Rata-rata durasi per lantai pada metode konvensional berkisar antara 9 hingga 13 hari, sedangkan pada metode aluminium formwork mencapai 14 hingga 21 hari per lantai. Temuan ini menunjukkan bahwa meskipun aluminium formwork lebih efisien dalam hal kualitas dan jangka panjang, metode konvensional lebih unggul dalam hal waktu pelaksanaan.
Analysis of nitrogen adsorption capability at various activation temperatures of Klaten natural zeolite Caroko, Novi; Sukamta, Sukamta
Jurnal Polimesin Vol 22, No 3 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i3.4882

Abstract

The Pressure Swing Adsorption (PSA) method operates by passing air through an adsorbent to produce concentrated oxygen gas. Zeolites are commonly utilized as adsorbents due to their ability to adsorb nitrogen from the surrounding air. Two types of zeolites commonly employed are natural and synthetic zeolites. While the utilization of natural zeolites as adsorbents in oxygen purification remains limited, their potential as an alternative adsorbent is worth exploring in this field. This study focused on developing physically activated Klaten natural zeolite as an adsorbent to enhance oxygen purity. Physical activation involved heating for 1.5 hours using an electric oven at four temperature variations (250ºC, 300ºC, 350ºC, and 400ºC). Additionally, four distinct flow rates were tested: 0.1; 0.5; 1.0; and 1.5 lpm. Oxygen purification testing revealed that higher activation temperatures led to greater increases in oxygen concentration. The highest increase of 2.45% was achieved at an activation temperature of 400ºC, while the lowest increase of 1.75% was observed at 250ºC with a flow rate of 0.1 lpm. With a 10-minute holding period, oxygen content during the adsorption process ranged from 1.35% to 2.45%, compared to 0.60%-0.75% without holding. Physical activation of zeolite from Klaten enhanced its nitrogen absorption capacity, indicating the potential of natural zeolite from Klaten for oxygen purification through optimized activation processes, possibly via chemical activation
Co-Authors Adi Putra, Kukuh Cahya Aditya Sage Pamungkas Agus Jamal Agus Suprihanto Agus Winarno, Agus Agusta, Rivga Agustina, Nurhaliza Alfiannur, Angga Alfiannur Aliputa, Henu Satya Ami tri Fatrin Anderika Pradhita Andru Fajar Febrianto Andryan Mistavhirul P Ari Dwiearto, Hasan Asy Arif Akbarul Huda Arif Hidayat As’ari, Muhammad Agung Asshidiqie, Muhammad Rony Atikasari, Tiara Cahya Ay Lie Han Ay Lie, Han Bagus Acung Bilahi Baharudin, Irfan Bobby Rio Indriyantho Budi Rohmad Wijayanto Budiyantoro, Cahyo Caroko, Novi Darwin Hartono Dedet Hermawan Setiabudi, Dedet Hermawan Dianugrah, Rizki Dimas Prasetyo Nugroho Doni Apriadi Putera Dwi Aries Himawanto Elfrida Gresih Lumbantobing Erista, Dicky Fajar Wahyu Putranto Ferry Hermawan Fitri Wahyuni Frediyansyah, Mochammad Tommy Galih Widyarini Gunawan Budiyanto Han Ay Lie Han Ay Lie Harahap, Yudani Alamsyah Hardi Wibowo Hardi Wibowo Hari Nugroho Hazim, Muhammad Fadhlurrahman Heru Kristanto Himawan Indarto Holyness Nurdin Singadimedja Husda, Syamsul Muarif Ilham Abadi, Ilham Ilham Nurhuda Inabah, Redha Fatki Indarto Indarto Indrastono Dwi Atmanto Intan Fitriani Junaedi Utomo Kamiel, Berli Paripurna Khrisnawan Arief Wicaksono Kresno Wikan Sadono Krisna Harimurty Kuni Saadati Lie , Han Ay Lisatia Dian Pithaloka Listiyono Budi Liza Azizah M. Yudi Purnawan Mashuri Amin D. Muhammad Razi Muzthohidun, Muhammad Nasmiarta, Zhafarina Malaha Nauval Rabbani Nazila, Kamila Shaomi Nicolaus Iyowau Nugroho, Dedy Melianto Nuroji Nuroji Nurrahman, Budi Parang Sabdono Parang Sabdono Parang Sabdono Patrick Matheus Permana, Agung Pramudiharto, Aji Pratama, Sadewa Eka Purnomo Purnomo Purwanto Purwanto Purwanto Purwanto R Dian Chintami R.Risang Haryo C.D. Raden Mohamad Herdian Bhakti Rini Marlina, Rini Rudi Yuniarto Adi Rudy Suryanto, Rudy S. Wisnu B. Sanggabuana Satria K Saputra, Agel Septesen Nababan Shomad, Muhammad Abdus Sidqi Muhammad Siti Hardiyati Sri Sangkawati Sachro Sri Tudjono Sri Tudjono Subandono, Bagus Sudarja Sudarja Sudarja, Sudarja Suharyanto Sulistya, Krisna Sulistyowati, Rizki Aulia Suprapto Suprapto Suryanto, Arwan Susilo Adi Widyanto Syaiful Anshari Thoharudin, Thoharudin Tri Agung Rohmat Tri Agung Rokhmat, Tri Agung Triana Setianingrum Tunggal Bagas Yuliawan Umam, M.Muhtajul Utama, Nafi Ananda Utomo, Jati Wicaksono, Dwi Aji Widyasmoro, Widyasmoro WINDHA MEGA PRADNYA DHUHITA Windu Partono Wiyana, Satria Hadi Yudo Prasetyo Yulfyandika Manggala Putra Yulita Arni Priastiwi Yurianto Yurianto