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Jurnal Spesialis Teknik Sipil (JSpTS)
Published by Universitas 17 Agustus 1945 Surabaya
ISSN : -     EISSN : 27146227     DOI : https://doi.org/10.30996/jspts.v2i01.7098
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal Spesialis Teknik Sipil (JSpTS), as a medium of communication and dissemination of research results and scientific work in Construction Project Management. Our scope includes Civil Engineering, Risk Management, Value Engineering, Health, Safety, and Environment Management. Jurnal Spesialis Teknik Sipil (JSpTS), sebagai media komunikasi dan diseminasi hasil penelitian dari bidang Ilmu Manajemen Proyek Konstruksi meliputi dan tidak terbatas pada bidang Teknik Sipil, Manajemen Risiko, Rekayasa Biaya, Keselamatan Kesehatan Kerja dan Lingkungan.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 46 Documents
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Analisis Perhitungan dan Pengendalian Mutu Pekerjaan Beton Pada Pembangunan Gedung PD Panca Karya Ambon
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 4 No 1 (2023)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Engineering and quality control of concrete work is carried out to measure and monitor variations in the composition of the mixture as well as measure and monitor work activities that will affect the strength and homogeneity of concrete as well as the construction of privately owned buildings such as the PD Panca Karya Ambon Building must also meet predetermined requirements the. The operational work in question is batching, mixing, placing, curing, and testing. The need to monitor concrete quality is not only to ensure concrete meets technical standards but also for economic reasons. If a low level of control is exercised, it will result in a higher standard deviation, so a higher average strength must be achieved, which of course requires more cement. Supervision of concrete work must be carried out at all stages of work from the initial work to the final work in the form of mixed tests.
Studi Faktor Penyebab Keterlambatan Penyelesaian Pekerjaan Konstruksi Gedung di Universitas Islam Lamongan Damara, Bobby; Mudjanarko, Sri Wiwoho; Moetriono, Hary
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 5 No 2 (2024)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v5i2.12064

Abstract

Schedule delays or increased construction calendar periods are problems that are often encountered in construction project work and can be caused by several factors including managerial factors, implementation methods, work environment and so on, during the construction of buildings at the Islamic University of Lamongan in 2015-2018 there were delays in several buildings or infrastructure built by the university in this study the researchers made efforts to obtain or find out the main supporting factors that influence delays by means of a survey distributing questionnaires to parties with a direct interest in construction project work. The ranking method is used to determine the ranking of respondents which can later be used as a reference as to why the construction of campus buildings is delayed, Data analysis in this study uses multiple linear regression analysis stepwise method based on the results of the analysis of variable X7 (implementation method) is the most dominant factor in time delays obtained coefficient value 0, 924 or 92.4% with a multiple linear regression equation Y = 0.962 + 0.924 (X7) and the results of the β coefficient value, obtained the following ranking The implementation method factor (X7) with a β coefficient value of 0.924, financial factors (X5) with a β coefficient value of 0.171, managerial factors (X8) with a β coefficient value of 0.040. Design factor (X2) with a β coefficient value of 0.031, Labor factor (X1) with a β coefficient value of -0.017, Work environment factor (X3) with a β coefficient value of -0.063. Material / material factor (X4) with a β coefficient value of -0.064, Equipment factor (X6) with a β coefficient value of -0.136, Based on the results of the analysis obtained for construction service providers who carry out development work, must apply good and efficient implementation methods in all stages of work.
Analisis Prediksi Kondisi Kekerasan Jalan Raya menggunakan Aplikasi IRI untuk Penanganan Jalan (Studi Kasus: Ruas Jalan Nasional Kota Jalan Nasional Kota Ruas, Gresik-Sadang) Kogoya, Desmin; Nugroho, Laksono Djoko; Oetomo, Wateno
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 5 No 2 (2024)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v5i2.12065

Abstract

Road pavement conditions will overcome the decline in service levels over time. The decline in the level of road services is characterized by the occurrence of damage to the structure of the pavement layer of the road and left in a long period of time it will be able to renew the level of the layer of security that can increase security, comfort, and smoothness in crossing. The purpose of this study is to analyze the influence of traffic, pavement structure and CBR on the value of road IRI and estimation of road pavement conditions in the next 10 years. The data used in this research are traffic load, CBR, rainfall and road pavement structure. The analysis was carried out using a method developed by IRI (International Roughness Index) to predict road conditions. Data collection was carried out by surveying road damage using the ROADROID application and (RCI) the Road Condition Index as preliminary data. This research will be applied to data collected from the national road network in East Java province, specifically the Bts national road section. Gresik City - Sadang. To facilitate analysis, the road segment is divided into 3 segments with the length of each km segment starting from Km 20 to Km 40. The results of data analysis show an increase in traffic load of 31% will result in an increase in IRI value of 0.061 m / km per year, a structural value of 11.32% resulting in an increase in IRI of 0.034 m / km per growth, based on a CBR of 38% resulting in an increase IRI value of 0.017 m / km per year. The predicted results of road pavement conditions on Km 40, 20 and 20 sections are minor damaged roads, for Km 20, 40 routine maintenance sections.
Penerapan Sistem Perencana Terakhir (Pada Proyek Pembangunan SMP Al-Falah) Ferdiandika, Ahmad Fadhil; Nuciferani, Felicia T; Choiriyah, Siti; Harianto, Feri
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 5 No 2 (2024)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v5i2.12066

Abstract

Currently, the construction sector is adopting the theory of production in the manufacturing industry, known as lean construction, to reduce waste and increase value. Last Planner System (LPS) has not been widely used and has good potential because the advantage of LPS is to identify a job along with obstacles to improve performance in a construction project. In the construction of Junior High School (SMP) Al-Falah, it has work obstacles due to erratic weather so that the project is delayed, the author conducts a field survey to analyze the actual progress in the field, LPS has work indicators / work flow to measure the extent to which work indicators can be realized properly, the LPS work flow are Master Plan, Phase & Pull Planning, Lookahead Planning, Constraints Analysis, Shielding Production, and Percent Plan Complete (PPC) as a standard for measuring whether project productivity is realized properly or not. In this study, the results of the implementation using LPS on the Al-Falah Junior High School construction project show that the lowest PPC can be seen in week 7, which is 0% because there is no work achievement so that the work is delayed, while in week 16 it can be seen that PPC has increased dramatically to 96%. Then after averaging the PPC of 51% which means that LPS has not been able to increase the reliability of planning above 70%, (Ballard, 2000).
Asesmen Stabilitas Geoteknik dan Rekomendasi Perbaikan Tanah dengan Soil Grouting dan Drainage Tunnels (Studi Kasus: Pergeseran Dinding Penahan Tanah Pondasi Tower Transmisi) Khoeri, Heri; Isvara, Wisnu; Pradana, Roberto
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 5 No 2 (2024)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v5i2.12067

Abstract

The detection of a retaining wall displacement in early 2023 at one of the DD6+12 transmission tower sites raised concerns about the tower's stability, potentially leading to structural failure. A comprehensive assessment was conducted on the tower's verticality, retaining wall displacement, subsurface conditions, and soil properties around the tower area. The assessment results revealed a linear inclination of the transmission tower from the base to the top, with a deflection at the top of approximately ±20 cm to the south and ±7 cm to the west. With this condition, some structural elements reached a stress-to-permitted stress ratio of 0.91. Although still within allowable limits, without soil stabilization, it is at risk of structural failure. GPR scan results showed differences in foundation dimensions compared to the as-built drawings and identified cavities filled with water beneath the ground surface due to poor drainage, resulting in a safety factor of 1.088, whereas the required safety factor is 1.5. This condition caused the retaining wall displacement. Recommendations including constructing drainage tunnels upstream, soil grouting, installing wheep holes in the retaining walls, and adding secant piles would increase the safety factor to 1.988.
Optimasi Pemanfaatan Air Waduk Sistem Semi Kaskade Waduk Pacal dan Waduk Gongseng dengan Menggunakan Program Linear Agustina, Nia; Rahman, Rizki Robbi; Indriyani, Dwi
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 5 No 2 (2024)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v5i2.12068

Abstract

Pacal Reservoir and Gongseng Reservoir are reservoirs located in Temayang District, Bojonegoro Regency, East Java. These two reservoirs irrigate the Pacal Irrigation Area with an area of 7.049 Ha with other functions of the Gongseng Reservoir as a raw water provider, potentially as a power plant, and able to reduce flooding. This study aims to determine the optimization of water utilization of Pacal Reservoir and Gongseng Reservoir to meet the needs of irrigation water and raw water in the next 10 years. Optimization is carried out using a linear program with Microsoft Excel Solver Add-ins to get the optimal reservoir water utilization to meet the needs by maximizing the profit of agricultural products in irrigation. From the results of the analysis of reservoir water utilization that has been carried out for the next 10 years, it is found that the amount of irrigation water needed for the existing cropping pattern is 2,89 m3/det, for alternative cropping pattern 2 is 3,94 m3/det, and for alternative 3 is 2,51 m3/det. The raw water demand for Temayang, Sukosewu, Sugihwaras, and Kedungadem sub-districts is 0,48 m3/det. The amount of discharge to rotate the turbine is 1,22 m3/det with the amount of energy generated is 59,91 MWh. With the availability of discharge in both reservoirs, both reservoirs are able to meet the needs of irrigation, raw water, and MHP for the next 10 years with the most optimum cropping pattern based on maximum profit is in alternative 2 (Paddy-Paddy-Palawija) with a total profit of Rp 601.683.497.035. In addition, the Gongseng Reservoir is able to reduce flooding by 60,87% at Q25; 60,58% at Q50; 60,41% at Q100; 58,64% at Q1000 and 45,94% at QPMF.
Analisis Crashing Pelaksanaan Pekerjaan Berulang pada Proyek Perumahan dengan Metode LoB (Line of Balance) Studi Kasus Perumahan Bumi Podo Rukun Fadjarwati, Indah; Oetomo, Wateno; Widhiarto, Herry
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 6 No 1 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v6i1.131835

Abstract

Housing construction is a recurring and sustainable job. So if the scheduling does not take into account the character of this work then the repetitive work unit will experience a delay (lag). So that it will result in the duration of the project. To overcome this, an uninterrupted scheduling method is needed from one unit to the next. The scheduling method that matches this type of repetitive work is the Line of Balance (LoB) because each activity / activity is described in a straight line and the speed of work can be changed according to needs. This is to avoid the occurrence of crashes / conflicts between activities. This method can also minimize the delay time as mentioned above. But this method cannot show dependency between critical activities and the other activities. For this reason, another method is needed in order to fill this gap. The suitable method is CPM through Microsoft Project. This combination of methods besides managing the time of project implementation also regulates human resources, namely by maximizing the allocation of human resources. Because in this multi-unit project the quantity of work is the main thing. From some analysis calculations, the results obtained that the addition of buffers with productivity speed smoothing, and the acceleration of the duration of the activity more effective to accelerate the implementation time of the project with a duration of 154 days.
Analisis Prediksi Potensi Akuifer dengan Metode Geolistrik Resistivitas Sounding (Studi Kasus di Kabupaten Mojokerto) Abid, Luthfil; Nugroho, Laksono Djoko; Sajiyo, Sajiyo
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 6 No 1 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v6i1.131841

Abstract

Water usage from year to year continues to increase. It is caused by the growth of the population that is growing rapidly. This condition is inversely proportional to the increasingly limited availability of water sources. By because it's, required a study of potential water the soil in each area. The purpose of this study is nterpretation of the data resistivity geoelectric sounding using software IP2WIN to know the predictions of potential aquifers in the village of Sumberwuluh District of Dawarblandong Regency Mojokerto. Interpreting the data resistivity geoelectric sounding using software RES2DINV to know the predictions of potential aquifers in the village of Sumberwuluh District of Dawarblandong Regency Mojokerto. Evaluate the results of comparisons between IP2WIN and RES2DINV software. The method that is used in research this is the software IP2WIN and RES2DINV. Results of the study show that based on data processing IP2WIN software shows one layer of rock. Layers with apparent resistivity (ρ) = 68,5 Ω m, thickness (h) = 0,758 m and depth (d) = 0,758 m. With a depth of 0,758 m, it is predicted that only infiltration water and not potential as an aquifer. Based on data processing RES2DINV software shows a resistivity value of 1,75 - 35 Ω m. Resitivity value 1,75 – 4,12 Ω m is a layer with soil water content in blue contour color. Depth reaches 70.7 to 85.4 with a color contour of blue which is estimated to water the ground and potentially as aquifers. Evaluation of the results of the comparison processing of the data between software IP2WIN with RES2DINV indicate that the software RES2DINV much better in predicting the potential of the aquifer.
Analisis Faktor Penyebab Waste Besi dan Mitigasi pada Proyek Toll KLBM (Krian Legundi Bunder Manyar) Rizki, Muhammad Alvan; Mudjanarko, Sri Wiwoho; Abdulrahim, Muslimin
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 6 No 1 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v6i1.131842

Abstract

In general, iron material is a support of structural buildings. Waste iron material is waste that has a high enough value in a construction that is of particular concern in current construction projects. Iron waste material can be defined as material, which does not add value or progress to construction projects. So that more waste can make a loss project. Many factors cause iron material waste in the KLBM Toll project, both internal and external factors. The population of this research is the KLBM Toll Project. Research data obtained through the distribution of questionnaires and interviews with KLBM Toll construction practitioners using Google Form. Data taken from 11 respondents are probability, impact, and mitigation data. Data processing uses Fault Tree Analysis, Expected Monetary Value, and Mitigation Decision. The largest Expected Monetary Value results show the biggest factor causing iron material waste. The results showed the three biggest causes of iron material waste based on the EMV value were the construction had already taken place, the owner made a design change, the planner was less competent, and the iron material was lost / vandalism. The biggest cause category is in terms of design. Mitigation that can be done is to review the design and structural drawings with value engineering, improve communication in design planning, hold regular meetings between the owner and contractor, check material regularly, protect iron material properly for example installing fences in the area of iron stock, and provide additional security like cctv.
Analisis Biaya dan Waktu Pekerjaan Finishing dengan Metode Earned Value di Proyek Gedung Serba Guna Kabupaten Gresik Wahyudi, Muhammad; Oetomo, Wateno; Mudjanarko, Sri Wiwoho
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 6 No 1 (2025)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v6i1.131843

Abstract

Architectural work in a construction project, generally is a non-structural work. However, the implementation can require a long time and a large cost weight. The implementation of finishing work in multi-purpose building construction project of Gresik Regency that was already running and had problems, that is a lot of workers but lack of work progress, so an increase of the cost from budget planned. Therefore it needs to doing research that for get the actual time of project implementation and get Estimate at Completion (EAC). The results is that the actual time of project implementation is not suitable with time of project planning. The project has been to late so there is a decrease in project performance. In the 1st week of project implementation on time, in the 2nd week until the 15th week the project has been to late (schedule overrun). So based on the time of implementation, the project has decreased performance. The total estimated cost can be seen from the Estimate at Completion (EAC) calculation, which is Rp.274,424,152.89.

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