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Mardiaman, Mardiaman
Universitas Tama Jagakarsa
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Social Sciences Transportation Other

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KAJIAN EFISIENSI PENGHEMATAN ENERGI LISTRIK DI MAKO POLRES JAKARTA BARAT SEBAGAI PENERAPAN BANGUNAN HIJAU Dian Pandu Wiyana; Mardiaman Mardiaman
Jurnal Ilmiah Desain & Konstruksi Vol 23, No 1 (2024)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/dk.2024.v23i1.10592

Abstract

Kehidupan manusia idak terlepas dari penggunaan energi ilstrik salah satunya untuk fungsi penerangan. Jika kualitas pencahayaan yang tidak memadai maka akan merusak fungsi visual, maka diperlukan perhitungan yang tepat dalam aplikasi pemasangannya selain itu Penggunaan enerji listrik berdampak pada terjadinya pemanasan global. Penelitian ini mencoba mengevaluasi optimalisasi penggunaaan energi pada gedung mako polres Jakarta Barat Tujuan penelitian untuk mengetahui fitur-fitur penerangan dan kesesuaian lampu yang terpasang dengan fungsi ruangan serta efisiensi enerji listrik. Jenis penelitian bersifat  deskriptif ekploratif dengan pendekatan kuantitatif. Data dikumpulkan mulai Maret sampai Agustus 2023 dengan wawancara dan survai lapangan. Hasil olahan data pengunaan jumlah lampu yang sesuai dengan kebutuhan ruangan menghasilkan  pengurangan pemakaian energi listrik dari 357,244 ke  345,388 kWh dengan tingkat efisiensi sebesar 3,18%. Rekomendasi penghematan untuk gedung perkantoran adalah dengan budaya hemat energy bagi pekerjanya
EVALUASI PENETAPAN BOBOT HARGA PEMENANG PENGADAAN BARANG DAN JASA DI PROYEK POLRI METRO JAYA DAN PEKERJAAN UMUM RI Edgar Firman Illahi; Mardiaman Mardiaman
Jurnal Ilmiah Desain & Konstruksi Vol 23, No 1 (2024)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/dk.2024.v23i1.10601

Abstract

Pengadaan jasa pekerjaan konstruksi dengan nilai tertentu harus melalui proses lelang berdasarkan undang-undang. Salah satu penetapan pemenang lelang dalam proyek pekerjaan konstruksi di proyek kepolosian Polda Metro Jaya  didasarkan pada harga penawaran yang wajar. Rencana anggaran biaya telah disusun oleh perencana sehingga perbedaan bobot penawaran antara peserta lelang kompetitif tidak boleh berbeda jauh. Penawaran yang masuk akal berbobot 80%, tetapi konsultan tidak tahu pasti berapa beratnya. Penelitian ini bertujuan untuk mengetahui nilai penawaran. Data yang dikumpulkan adalah nilai anggaran proyek dan bobot penawaran sebagai pemenang lelang. Analisis dilakukan terhadap data dan diperoleh nilai bobot rata-rata, minimal dan maksimum untuk ditetapkan sebagai pemenang pengadaan barang dan jasa. Hasil analisis bobot penawaran tertinggi adalah pada penyediaan jasa konsultansi di Polda Metro Jaya dengan nilai rata-rata 89,29%, Mengetahui berat penawar yang menang membantu kontraktor menentukan harga penawaran yang ideal.
EVALUASI SIMPANGAN HARAPAN BOBOT PADA PERSENTASE DURASI 20%, 40%, 60% DAN 80% DARI WAKTU PADA PELAKSANAAN PEKERJAAN KONSTRUKSI Muhamad Suripto; Mardiaman Mardiaman
Jurnal Ilmiah Desain & Konstruksi Vol 23, No 1 (2024)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/dk.2024.v23i1.10618

Abstract

Penyelesaian waktu pelaksanaan pekerjaan konstruksi secara tepat waktu adalah cerminan kinerja yang baik. Kemajuan bobot kerja setiap periode waktu dapat terlihat dari jadwal rencana pelaksanaan. Namun penyimpangan kemajuan kerja sering terjadi akibat berbagai faktor baik internal maupun eksternal. Semakian banyak data tentang karakteristik pekerjaan kontruksi yang akan dikerjakan maka semakin mudah memenuhi target progres yang sudah direncanakan dalam kontrak. Ciri pekerjaan konstruksi adalah penuh ketidak pastina, termasuk ketidakpastian capaian progres pelaksanan pekerjaan konstruksi. Tujian penelitian ini untuk mengetahui kemajuan kerja pada saat pekerjaan konstruksi sudah berjalan selama 20%, 40%, 60% dan 80% dari durasi waktu pelaksanaan. 20 data progress kerja pekerjaan konstruksi yang sudah selesai  dikumpulkan. Dari Analisa data akan diketahui waktu pesimis, paling memungkinkan dan optimis pelaksanaan pekerjaan konstruksi. Mengetahui  capaian kerja pada periode tertentu memudahkan kontraktor menyiapkan dana untuk mencapai kemajuan kerja yang diharapkan
Studi Perbandingan Biaya pada Pekerjaan Pembongkaran Balok Girder di Proyek Penggantian Jembatan Cinagara Suhendar, Tatang; Mardiaman, Mardiaman; Azhar, Moh; Taqwa, Fadhila Muhammad Libasut
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17332

Abstract

There are 3 (three) alternative methods for dismantling bridge girders in the Cinagara Bridge replacement project, to find the most efficient and safe approach. The Cinagara Bridge, which is on the Ciawi – Sukabumi national road, Caringin district, Bogor Regency, located in a densely populated area and also close to the installation of the PGN pipeline network and PLN cable lines. This research aims to choose the implementation method with the most efficient costs, while still paying attention to safety and ease of work. The three alternative methods are: dismantling by lifting and moving the girder beam as a whole; dismantling by lifting the girder beam as a whole, then moving it segment by segment; and dismantling by breaking the girder beams on the spot and dropping them into the river, to be then moved outside the site. The research results show that the third method, namely breaking the girder beam on the spot and dropping it into the river, has the lowest implementation cost of IDR 86,637,250.00 and efficient implementation time. This method also ensures that the demolition results can be mobilized outside the project site and has the lowest risk of accidents. The first and second methods cost IDR 365,762,935.00 and IDR 170,301,233.00 respectively, and face various technical challenges and social risks. This research provides recommendations for using the third method with appropriate adjustments to ensure a smooth dismantling process, minimize environmental impacts, and maximize work safety. Apart from that, it is important to carry out routine equipment inspections, arrange demolition times during the day, and install safety nets to protect the surrounding area from demolition debris. Thus, this research can be a reference in choosing an effective demolition method for similar projects
Evaluasi Strategi Lot Sizing pada MRP untuk Optimasi Biaya Logistik Material Konstruksi Simanjuntak, Martua; Mardiaman, Mardiaman
Jurnal Talenta Sipil Vol 8, No 2 (2025): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i2.923

Abstract

Material Requirement Planning (MRP) is a critical approach for managing material procurement in construction projects to ensure timely delivery, avoid surplus inventory, and optimize logistical costs. In construction, inefficient planning often results in material shortages, excess stock, and delayed project completion, contributing to significant cost overruns. The choice of lot sizing strategy within the MRP system plays a central role in balancing ordering frequency and storage costs. While classical methods such as Economic Order Quantity (EOQ), and  Lot for Lot (LFL) are widely known, limited studies have applied a comparative evaluation of these methods specifically in construction logistics under real-world constraints. Most prior research emphasizes manufacturing applications, leaving a knowledge gap in dynamic, schedule-driven environments like public infrastructure projects. This study evaluates two lot sizing strategies, EOQ and LFL, using empirical data from a palm oil mill construction project in Mandailing Natal, Indonesia. A quantitative descriptive method was applied, utilizing data from master production schedules, bill of quantities (BOQ), and actual procurement cost records. The evaluation measured total procurement costs, ordering frequency, and inventory levels. The findings reveal that the LFL strategy results in the lowest total logistic cost at Rp 685,976,950.54, compared to EOQ at Rp 769,658,817.20, due to the complete elimination of holding costs despite higher ordering frequency. This implies that LFL is more suitable for government construction projects with short-term schedules and varying material demands, where minimizing storage risk is prioritized. The study contributes to procurement optimization under Indonesia’s public goods and services framework and recommends selective lot sizing strategies based on material characteristics and project dynamics.
Studi Perbandingan Produktivitas Teori dan Realitas pada Pekerjaan Konstruksi Keselamatan Pesisir di Teluk Jakarta Tahap 6 Paket 4 Widhitomo, Kurniawan; Azhar, Moh; Mardiaman, Mardiaman
Jurnal Talenta Sipil Vol 8, No 2 (2025): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i2.952

Abstract

Coastal protection infrastructure in Jakarta Bay is essential to mitigate flooding due to sea level rise and land subsidence. The use of spun piles with inner boring methods supported by Hydraulic Static Pile Driver (HSPD) technology is intended to ensure efficient and low-impact pile driving operations. However, in practice, productivity discrepancies between theoretical planning and field realization remain a significant issue. This study aims to analyze and compare theoretical productivity (based on contractual planning) with actual field productivity in the installation of spun piles for a coastal safety project in Jakarta Bay Phase 6 Package 4. A descriptive quantitative approach was used, combining direct field observations, time-lapse video analysis, and secondary data from contract documents. Productivity was measured in meters per hour (m/h) and piles per day (piles/day). Deviations between theoretical and actual productivity were identified, and causal factors were analyzed. Theoretical productivity was 3.59 m/h with 3.5 piles/day, while actual field productivity reached only 3.2 m/h with 3.33 piles/day. This discrepancy resulted in an estimated delay of 5 workdays (4.8% deviation). The primary contributing factors were inconsistent hydraulic pressure, environmental constraints, equipment limitations, and varying operator skill levels. The study confirms that real-time monitoring and productivity assessment tools are crucial for timely project delivery. It also highlights the need for adaptive planning and systematic operator training. The findings provide practical guidance for enhancing productivity in future coastal foundation projects using HSPD technology.
Evaluasi Produktivitas Angkat Baja pada Bangunan Pabrik Kelapa Sawit Silitonga, Desmon; Mardiaman, Mardiaman; Indriasari, Indriasari
Jurnal Talenta Sipil Vol 8, No 2 (2025): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i2.957

Abstract

The growth of the industrial sector in Indonesia has driven the widespread use of steel structures due to their advantages in strength, construction speed, and cost efficiency. One significant application is in the construction of palm oil mills (PKS), which often face challenging site conditions requiring effective erection planning. However, steel structure erection productivity in PKS projects is frequently hindered by inappropriate work methods and unsystematic time recording. Significant variations in productivity across structural elements and the lack of comparative studies between crane and manual methods create a research gap that needs to be addressed. This study aims to evaluate and compare the productivity of steel structure erection in the Mill Building of a PKS project using crane and manual methods. A quantitative case study approach was applied at PT. Tunggal Yunus Estate, Tapung, Riau, with primary data collected through field observations, interviews, and project documentation. Productivity (kg/hour) was calculated based on the weight and installation duration of each structural element. The results show an average erection productivity of 480.98 kg/hour, with the highest productivity reaching 955.44 kg/hour for main columns and rafters using a crane. In contrast, manual methods for secondary elements such as wind bracing and canopy yielded the lowest productivity at 156.78 kg/hour. These findings confirm that crane methods are more effective for main structural elements, while the use of manual methods should be carefully adapted to site conditions to maintain time-cost efficiency.
Analisis Data Operasional Mrt Fase 1 terhadap Prediksi Jumlah Penumpang di Fase 2 Aswinto, Aswinto; Azhar, Moh; Mardiaman, Mardiaman
Jurnal Talenta Sipil Vol 8, No 2 (2025): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i2.929

Abstract

Urban congestion in rapidly growing cities like Jakarta necessitates efficient, data-driven transportation planning. As part of Indonesia’s efforts to modernize its urban mobility systems, the Jakarta Mass Rapid Transit (MRT) has emerged as a strategic initiative to reduce traffic dependency on private vehicles. While Phase 1 of MRT Jakarta has been operational since 2019, Phase 2 development requires a reliable forecasting framework to anticipate future passenger demand and support infrastructure planning. However, previous studies often rely on macroeconomic projections rather than empirical operational data, leaving a gap in predictive accuracy. This study aims to analyze the influence of MRT Jakarta phase 1 operational data on the prediction of passenger numbers in phase 2 as the basis for evidence-based transportation development planning using a hybrid approach: ARIMA forecasting and multiple linear regression modeling. Primary data were gathered from 125 MRT users via Likert-scale surveys, while secondary data were derived from MRT Jakarta’s operational reports from 2019–2023. Here we show that service quality and multimodal integration significantly increase ridership, while fare levels and poor accessibility negatively affect passenger volume. The ARIMA model, however, shows limited accuracy (R² = 0.164; MAPE = 62.225%), indicating high variability due to pandemic-induced fluctuations. In contrast, regression analysis explains 44.1% of ridership variation, offering a more actionable basis for forecasting. These findings suggest that MRT Phase 2’s success will depend not only on physical expansion but also on improved intermodal integration, user-centered service quality, and competitive fare strategies. The study contributes to transport planning by integrating quantitative modeling with user behavior insights for data-driven infrastructure scheduling.
Evaluasi Ketersediaan Perlengkapan Jalan pada Jalan Raya Narogong, Bekasi, Indonesia Turangan, Keni Kaisarea; Mardiaman
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i5.58657

Abstract

Jalan Raya Narogong merupakan salah satu ruas jalan kolektor primer II di Kota Bekasi yang menghubungkan Kota Bekasi dengan Kabupaten Bogor, namun dikenal sebagai lokasi dengan tingkat kecelakaan lalu lintas yang tinggi. Berdasarkan data IRSMS Polri tahun 2022, tercatat 211 kejadian kecelakaan di ruas ini, menjadikannya sebagai jalan dengan jumlah kecelakaan terbanyak di Kota Bekasi. Penelitian ini bertujuan untuk mengevaluasi ketersediaan perlengkapan jalan serta memberikan rekomendasi teknis penataan fasilitas keselamatan pada lokasi rawan kecelakaan. Metode penelitian dilakukan melalui analisis data IRSMS yang divalidasi dengan observasi langsung di lapangan, serta perhitungan pembobotan berdasarkan tingkat keparahan korban (meninggal, luka berat, luka ringan) untuk menentukan segmen prioritas evaluasi. Hasil analisis menunjukkan bahwa Segment 5 merupakan segmen dengan tingkat keparahan tertinggi, dengan bobot 92. Pada segmen ini ditemukan kekurangan signifikan dalam perlengkapan jalan seperti rambu peringatan, larangan, dan petunjuk arah. Berdasarkan analisa kebutuhan, direkomendasikan penambahan 15 unit rambu lalu lintas di titik-titik strategis. Temuan ini memberikan kontribusi nyata dalam peningkatan keselamatan lalu lintas, khususnya melalui pendekatan berbasis data spasial dan kebutuhan aktual di lapangan. Implikasi penelitian ini penting bagi pemerintah daerah, dinas perhubungan, dan pemangku kebijakan lainnya dalam menyusun program prioritas pengadaan perlengkapan jalan di wilayah rawan kecelakaan.
Menentukan Biaya Dan Waktu Pelaksanaan Erection Konstruksi Baja Mill Building Pabrik Kelapa Sawit Silitonga, Desmon; Mardiaman, Mardiaman
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i6.59942

Abstract

This research aims to assess the costs and duration associated with the erection of steel structures in the Mill Building of PT. Tunggal Yunus Estate Palm Oil Mill, located in Kampar, Riau. The palm oil sector plays a significant role in Indonesia's economy, making the presence of Palm Oil Mills (PKS) essential for palm oil production. Utilizing a quantitative methodology with a case study approach, the study analyzes work volume, equipment and labor productivity, as well as cost and time estimations. Results reveal that the erection period for the steel structure is 40 calendar days, which corresponds with the actual time recorded on-site. The overall cost of erection is IDR 276,075,000.00, resulting in a unit cost of IDR 1,854/kg. Various factors affecting costs and duration include weather conditions, the challenging muddy terrain of the project site, and the coordination among work teams. This study offers valuable insights for the planning and budgeting of future steel construction projects within the palm oil industry.
Co-Authors Abda Abda Ahmad Fadly Ahmad Romani, Ahmad Arief Budi Hartono Arif Budi Harsono Aswinto, Aswinto Azhar, Moh Bambang Priyambodo, Bambang ButarButar, Frans Tomy Syahputra Daud Surbakti Dewita, Hikma Dian Dian Dian Pandu Wiyana Edgar Firman Illahi Eri Susanto Hariyadi Eri Susanto Hariyadi, Eri Susanto Ernamaiyanti Ernamaiyanti, Ernamaiyanti Ery Alfred Ibrahim Fadhila Muhammad Libasut Taqwa Fadillah Taufik Feril Hariati Fernando Simarmata Henry Maurice Herianto Siahaan Heribertus Nurbawono Budiharsanto Hikma Dewita Hikma Dewita Hikma Dewita Ida Ayu Putu Sri Widnyani Indriasari Indriasari Indriasari, Indriasari Irsanti Kusuma, Edward Putra M. Aras Sipala, La Ode Manlian Ronald A. Mara Naek Pane Mieke Yulastari Chasbullah Moh Azhar Muhamad Suripto Muhammad Firdaus Muhammad Ridho Alcaesar Muhammad Ridho Alcaesar Muktadir, Redho Narto, Heribertus Pandu Wiyana, Dian Pane, Mara Naek Rajagukguk, Lamser Ramadhani Ramadhani Ricky Rinaldi Sampurna Bangun Semedi Napitupulu Silitonga, Desmon Simanjuntak, Martua Simon Sembiring G Sopar Butarbutar Suhendar, Tatang Sukahar, Aswin Grandiarto Syafiatun Siregar Theo Haganta Turangan, Keni Kaisarea Victorio Siahaan, Tirto Amsal Widhitomo, Kurniawan