https://jurnal.untag-sby.ac.id/index.php/JSpTS/issue/feed 2025-04-29T06:57:28+00:00 Hanie Teki Tjendani hanie@untag-sby.ac.id Open Journal Systems <p>Jurnal Spesialis Teknik Sipil (JSpTS) is a Journal of Civil Engineering Construction Management that focuses on Civil Engineering Research and the Construction Sector.&nbsp;</p> <p>Published by <a href="https://issn.lipi.go.id/terbit?search=2714-6227">Magister Teknik Sipil Fakultas Teknik Universitas 17 Agustus 1945 Surabaya</a>, Indonesia.</p> <p>Editors accept articles that are relevant to the focus and scope of this journal. Published 2 times a year in April and October.</p> <p>&nbsp;</p> <p>Contact Person: WA: +62 811312484 / Email: hanie@untag-sby.ac.id</p> <p>&nbsp;</p> https://jurnal.untag-sby.ac.id/index.php/JSpTS/article/view/131835 2025-04-29T06:57:19+00:00 Indah Fadjarwati indahfadjarwati@gmail.com Wateno Oetomo wateno@untag-sby.ac.id Herry Widhiarto herrywidhiarto@untag-sby.ac.id

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.

2025-04-29T06:55:08+00:00 ##submission.copyrightStatement## https://jurnal.untag-sby.ac.id/index.php/JSpTS/article/view/131841 2025-04-29T06:57:21+00:00 Luthfil Abid luthfilabid37@gmail.com Laksono Djoko Nugroho laksono@untag-sby.ac.id Sajiyo Sajiyo sajiyo@untag-sby.ac.id

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.

2025-04-29T06:55:40+00:00 ##submission.copyrightStatement## https://jurnal.untag-sby.ac.id/index.php/JSpTS/article/view/131842 2025-04-29T06:57:23+00:00 Muhammad Alvan Rizki alvanrizki90@gmail.com Sri Wiwoho Mudjanarko sriwiwoho@gmail.com Muslimin Abdulrahim muslimin@gmail.com

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.

2025-04-29T06:56:02+00:00 ##submission.copyrightStatement## https://jurnal.untag-sby.ac.id/index.php/JSpTS/article/view/131843 2025-04-29T06:57:25+00:00 Muhammad Wahyudi myudi_js30@yahoo.co.id Wateno Oetomo wateno@untag-sby.ac.id Sri Wiwoho Mudjanarko sriwiwoho@gmail.com

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.

2025-04-29T06:56:19+00:00 ##submission.copyrightStatement## https://jurnal.untag-sby.ac.id/index.php/JSpTS/article/view/131844 2025-04-29T06:57:26+00:00 Angel Rumihin angelrumihin19@gmail.com Ony Frengky Rumihin ony@untag-sby.ac.id

The Mini Palace of Banda is a cultural heritage building located on Banda Neira Island, Central Maluku Regency, Maluku Province. Several earthquakes, including the significant event on January 10, 2023, have severely impacted historical structures in the region, including the Mini Palace. This study aims to develop a restoration plan for earthquake-induced damages while adhering to cultural heritage conservation principles. The research methods include an analysis of the existing building conditions, structural evaluations, and cost estimation for rehabilitation efforts. The findings indicate damage to the main Mini Palace building, the residence building, auxiliary buildings, and the exile house of Bung Hatta. Structural evaluations highlight the need for repairs to the roofing, walls, and reinforcement of the foundations to ensure the stability of the structures. Rehabilitation cost estimations reveal allocation proportions of 20.10% for the Mini Palace, 8.254% for the residence building, and 16.95% for the auxiliary buildings from the total budget of IDR 15,660,455,000.00. This study contributes by providing a technical planning framework for the post-earthquake rehabilitation of cultural heritage buildings while preserving their historical, architectural, and cultural values.

2025-04-29T06:56:35+00:00 ##submission.copyrightStatement##