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All Journal WIDYA TEKNIKA The Spirit of Society Journal : International Journal of Society Development and Engagement International Journal of Social Service and Research JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS (JHSSB) International Journal Science and Technology (IJST) International Journal on Advanced Technology, Engineering, and Information System (IJATEIS) Jurnal Teknik Indonesia Jurnal Spesialis Teknik Sipil (JSpTS) Advances In Social Humanities Research
Laksono Djoko Nugroho
Jurusan Teknik Sipil - Universitas Bojonegoro Jawa Timur
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Transportation Other

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PENGENDALIAN BANJIR SUNGAI PEDOLO DENGAN SALURAN PENGELAK Nugroho, Laksono Djoko
WIDYA TEKNIKA Vol 19, No 2: OKTOBER 2011
Publisher : Universitas Widyagama Malang

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

Abstract

Sungai Pedolo merupakan sungai utama yang melintasi Kota Bima. Sungai ini memiliki luas daerah aliran sungai seluas 216,11 km2 dimana setiap musim hujan menimbulkan banjir di setiap pengalirannya terutama di Kota Bima. Hal ini mengakibatkan lumpuhnya aktivitas pemerintahan, perekonomian, dan jalur transportasi menuju Kota Bima. Oleh sebab itu perlu dilakukan pembuatan Saluran Pengelak L=1.338 m, dengan kapasitas debit 50 m3/dt. Pengendalian Banjir Sungai Pedolo dengan Saluran Pengelak, bertujuan untuk mengurangi debit banjir pada Sungai Pedolo. Dari perhitungan banjir Sungai Pedolo dengan Q5 tahunan = 233,294 m3/dt, jika direduksi dengan Q pengelak = 50 m3/dt, maka debit banjir dihilir Sungai  Pedolo menjadi 183,294 m3/dt. Dengan menggunakan Software Hec Ras terlihat bahwa dengan rencana saluran pengelak dapat mengurangi debit banjir di daerah hilir di Kota Bima, yang dampaknya bisa mengurangi Kota Bima yang tergenang dari banjir sekitar 69,55 % (185 ha), dimana sebelum adanya rencana saluran pengelak yang  tergenang banjir seluas 266 ha.
Analysis Of Water Balance Aspect On The Results Of Geo-electric Interpretation With Schlumberger Configuration Wulandari, Esti; Septoraharjo, Eko Rony; Nugroho, Laksono Djoko; Hudyantoro, Hudyantoro; Oetomo, Wateno
THE SPIRIT OF SOCIETY JOURNAL : International Journal of Society Development and Engagement Vol 4 No 2 (2021): March 2021
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/scj.v4i2.1388

Abstract

The background of the problem is that the need for water for various purposes constantly increases in line with the population growth and changes in water use patterns caused by technological advances, industrial growth, and changes in land use. Moreover, from the existing problems, several problem formulations were obtained as the basis for identifying the presumption of groundwater presence, among others, 1). what is the magnitude of the infiltration rate in the study area in relation to the influence of land use conditions, 2). how the results of geo-electric interpretation using the Schlumberger configuration in estimating aquifer layers based on geo-hydrological aspects, and 3). how the effect of time and cost efficiency. Based on the results of the analysis and calculations, several things can be concluded, including: 1). the volume of the infiltration rate using the Horton method (q) by considering the land cover / land use conditions (C), it is known that the average infiltration capacity on the land in the study location per year is more than 200 cm / year, and has an effective enough infiltration capacity so that it is average. -the annual average can store water up to> 200 cm / year, 2). In that area, an aquifer layer was found at a depth of 30-50 meters at the GL 1 point, and the GL point at a depth of 22-55 meters, with the results of the analysis showing the ability of the land to carry out the infiltration process properly and validated from the results of geo-electric investigations, and 3). the results evaluation analysis is able to streamline the amount of operational costs for groundwater source investigations and the time of implementation
ANALYSIS OF THE EFFECT OF SUPERVISORY CONSULTANT PERFORMANCE FACTORS ON THE CONSTRUCTION OF THE TRANS STUDIO BUILDING SURABAYA Rahman, Medio Duddian Wahyu; Oetomo, Wateno; Nugroho, Laksono Djoko
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 1 No. 3 (2022): AUGUST
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v1i3.408

Abstract

This study aims to determine impact of Understanding Contract Documents, Understanding of Technical Specifications, Use of Materials, Use of Labor, and Use of Equipment on the performance of supervisory consultants. This research conducted with a quantitative method. The sources of data using primary data from interviews. The research population is 70 Consultants for the Construction Project of the Trans Studi Surabaya Building with the sample being the entire population. The data analysis technique using PLS program. The results found that understanding of contract documents and technical specifications has a positive significant impact on the performance of the Supervisory Consultant. Meanwhile, the use of materials, labor and equipment has a positive significant impact on the performance of the Supervisory Consultant.
STUDY OF DRAINAGE, PANORAMIC HOUSING, CEMENGKALANG VILLAGE, SIDOARJO DISTRICT Ismanto, Ikko Bagus; Nugroho, Laksono Djoko; Oetomo, Wateno
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 1 No. 3 (2022): AUGUST
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v1i3.458

Abstract

Panorama Residence housing which has an area of 8000 m2 is located in a plain area with a slope of about 0-1%. The survey results on the Panorama Residence Housing, Cemengkalang Village, Sidoarjo District, have an elevation of -0.20 m, slightly above the flood level – 0.30 m. This area has a high probability of flooding due to overflow from the Pucang River, which runs off (run-off water) from other areas if it rains with high intensity. Moreover, the Panorama Residence area is a dense residential area with roads and parking lots, so rainwater has a smaller chance of infiltrating and running off. After analysis, The flood discharge at the 25-year return period on the Pucang River was 72,561 m3/sec. At the same time, the cross-sectional capacity of the Pucang River was 64,402 m3/sec, so the cross-section of the Pucang River at the Panorama Residence Housing location experienced overflow. The run-off volume is 102.6 m3, while the total capacity is 565.68 m3, so the extended storage capacity is quite adequate. In rainy conditions, t = 30 minutes, the run-off volume that occurs = 30.96 m3, and the total channel length = 493.12 m, the total drainage channel capacity = 184.92 m3 is greater than the run-off volume, 30.96 m3.
ANALYSIS OF PIPE NETWORK OPTIMIZATION FOR RAW WATER IN JABUNG SUB-DISTRICT, MALANG DISTRICT Subandriyo, Putut; Nugroho, Laksono Djoko; Muhammadun, Haris
INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM Vol. 2 No. 3 (2023): AUGUST
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/ijateis.v2i3.1053

Abstract

Jabung District is a sub-district located in the Malang Regency area of 135.89 km2 or around 4.56 percent of the total area of Malang Regency. This sub-district consists of 15 villages, including Argosari, Gadingkembar, Gunungjati, Jabung, Kemantren, Kemiri, Kenongo, Ngadirejo, Pandansari Lor, Sidomulyo, Sidorejo, Slamparejo, Sukolilo, Sukopuro, and Taji. With a population of 74,311 people in 2020, with a population density of 592 people/km2. In Jabung District, especially in 4 villages, including Pandansari Lor Village, Gading Kembar Village, Argosari Village, and Kemiri Village, there is currently a water shortage. Siuk Source Potential has water potential large enough to meet the standard needs in these 4 villages by gravity. From the results of instantaneous discharge measurements during the dry season in 2021, it can be seen that the discharge in Sumber Siuk is 65 l/sec, and the planned collection to fulfill these 4 villages is 20 l/sec. Construction of the broncaptering and raw water distribution network was built in 3 stages. Before the physical implementation of the installation of distribution pipes in stage 3, a trial run was carried out from stage 1 and stage 2.
IMPROVING MOBILITY IN KEDIRI CITY WITH MKJI ANALYSIS 1997 AND TIME SLICE AT SIMPANG EMPAT DHOHO PLAZA Hidiyati, Evita Fitrianis; Nugroho, Laksono Djoko; Haris Muhammadun
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1110

Abstract

The city of Kediri, as the third largest city in East Java, has cultural heritage, history and natural beauty that attracts visitors from various regions. However, population growth and motorized vehicles cause traffic jams. Signalized intersections, which are a solution to control intersection conflicts, require knowledge of intersection saturation flows to plan efficient traffic management. Analysis methods such as MKJI 1997 and Time Slice with Vehicle Operating Cost (BOK) calculations help design effective solutions. This research shows that adjusting cycle times, increasing effective width, and optimizing signals can improve transportation system performance and reduce congestion in Kediri City. Cycle time analysis taking into account factors such as vehicle type, traffic volume, and vehicle speed resulted in a cycle time of 90.7 seconds. The impact can be seen in the Degree of Saturation (DS) at various intersection arms, with service variations from E to F. Research also shows a decrease in waiting time/queuing for signal lights from 135 seconds to 118 seconds, which results in a decrease in the degree of saturation (DS) and changes in time cycle. The use of Smart Traffic Lights and traffic engineering, such as immediate left turns on the east arm and additional signs, is required. Evaluation of congestion cost efficiency shows that changing the value of side barriers can save Rp. 22,679,183 in the next five years.
ANALYSIS OF INVESTMENT SENDITIVITY IN TAMAN MELATI DINOYO APARTMENT, MALANG CITY Classinta ARD, Bella Astrina; Muhammadun, Haris; Nugroho, Laksono Djoko
JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS Vol. 3 No. 2 (2024): FEBRUARY
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/jhssb.v3i2.1017

Abstract

This research investigates the investment potential of Taman Melati Dinoyo Apartment in Malang City, focusing on economic and property market analysis. This research identifies the main factors affecting apartment investment, including property prices, construction costs, occupancy rates, and interest rates. Through a comprehensive literature review and primary data collection through interviews, the research provides insights for property developers, highlighting potential risks and effective mitigation strategies. The proposed investment structure involves a 30% equity and 70% borrowing ratio. Analysis methods such as NPV, IRR, BCR, and Payback Period are used for financial assessment. The Taman Melati Dinoyo Apartment Project in Malang City is financially feasible, with a NJOP value of Rp. 418,462,580,000. The NPV value is positive at Rp. 55,585,691,096, although the IRR is slightly below MARR at -8.99%. The BCR is 0.7997, indicating the project is less than 1, and the payback period is reached in the second year at IDR 186,959,656. Sensitivity analysis showed feasibility even with an increase in investment by 38% and a decrease in revenue by 20%
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.
FEASIBILITY ANALYSIS OF A BATCHING PLANT INVESTMENT FOR THE KEDIRI-TULUNGAGUNG TOLL ROAD PROJECT Suwito, Suwito; Nugroho, Laksono Djoko; Muhammadun, Haris
International Journal of Social Service and Research Vol. 5 No. 1 (2025): International Journal of Social Service and Research
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/ijssr.v5i1.1183

Abstract

This study evaluates the feasibility of establishing a batching plant for the Kediri-Tulungagung toll road construction, specifically for the Dhoho Kediris Airport toll access, section 2. Observations were conducted with key stakeholders at the project site, including concrete production costs, operational schedules, and potential bottlenecks. The data was analyzed using a quantitative approach with statistical software, focusing on investment feasibility indicators such as Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (Rohman & Husin, 2024). The results of the analysis show that the NPV is IDR5,599,938,029.34 with IRR reaching 82.71%, far above the Minimum Attractive Ratio (MARR) of 12%. In addition, the efficiency of concrete distribution time to the site improved daily work productivity. This study provides critical insights into the logistical, economic, and operational aspects of setting up a batchesing plant, which is essential for ensuring the efficient production of concrete required for the construction project. The findings can serve as a valuable reference for future projects in similar contexts, enhancing the planning and execution of toll roads in Indonesia.
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.
Co-Authors Abid, Luthfil Classinta ARD, Bella Astrina Esti Wulandari Gode, Dicky Haris Muhammadun Hidiyati, Evita Fitrianis Hudyantoro, Hudyantoro Ikko Bagus Ismanto Kogoya, Desmin Muhammadun, Haris Oetomo, Wateno Rahman, Medio Duddian Wahyu Sajiyo Sajiyo, Sajiyo Septoraharjo, Eko Rony Setiyo, Anugrah Dwi Subandriyo, Putut Suwito Suwito Wulandari , Esti