JURNAL TEKNIK SIPIL CENDEKIA (JTSC)

A Comparative Study of Quantity and Scheduling Using 4D BIM and Conventional Methods in Column, Beam, and Slab Construction

2025-05-29T03:53:50+00:00

Inadequacies in the conceptualization and assessment of construction scheduling frameworks can disrupt the epistemic continuity of project execution, thereby undermining procedural coherence and operational efficiency. Accurate and detailed material quantity planning is essential to ensure precise resource forecasting and the development of efficient and reliable construction schedules. This research investigates the role of methodological selection in the accuracy and efficiency of construction planning, with a particular emphasis on material quantification and scheduling outcomes through this comparative framework. The methodological approach undertaken in this study involves quantity surveying practices through the application of two modelling-based techniques, namely CAD-Revit and CAD-Conventional. For construction-shop drawing documentation as the primary data source, material quantities derived from each method serve as the basis for schedule development. This process culminates in the integration of 4D Building Information Modelling to facilitate the temporal visualisation of construction sequences, which supports a more comprehensive evaluation of the implications associated with each quantity derivation method on the accuracy of project planning. The comparative analysis of material quantities derived from the two methods revealed significant fluctuations, with the CAD-Revit approach demonstrating greater efficiency in material usage. This variation was further reflected in the scheduling outcomes, where the 4D BIM methodology indicated divergent timelines for the completion of structural component progress across different floors.

Alternatif Desain Cofferdam Proyek Pembangunan Bendungan Cijurey Kabupaten Bogor Provinsi Jawa Barat

2025-05-30T06:06:07+00:00

Cijurey Dam Package 1 is a strategic project located in Bogor Regency, West Java, aimed at flood control, providing raw water at a rate of 0.71 m³/second, irrigating an area of 2,047 hectares, and generating electricity through a hydropower plant with a capacity of 2×0.5 MW. One of the critical aspects of the dam's construction is the design of the cofferdam, which serves to protect the work area from river flow during construction. This temporary structure must be designed with consideration for hydraulic factors, stability against floods and earthquakes, and overall efficiency. This study reevaluates the cofferdam design using slope stability analysis supported by Geostudio software. The results indicate that the redesigned structure is more efficient without compromising safety.

ANALISIS DAYA DUKUNG AKSIAL TIANG DIAMETER 60 CM DENGAN MENGGUNAKAN UJI BEBAN STATIK AKSIAL DAN MENGGUNAKAN METODE ELEMEN HINGGA PADA PROYEK GEDUNG RAWAT INAP TOWER-1 RS HAJI MEDAN

2025-05-30T06:13:30+00:00

This study analyzes the axial load capacity and settlement of 60 cm diameter spun piles for the Inpatient Tower-1 Building at Haji Hospital, Medan, using static load tests and finite element modeling (FEM) with PLAXIS 3D. Field data from Standard Penetration Tests (SPT) and cyclic loading tests were compared with numerical simulations employing Mohr-Coulomb and Hardening Soil models. Empirical calculations based on SPT data (O’Neil & Reese method) yielded an ultimate capacity of 204.24 tons, while load test interpretations (Davisson, Mazurkiewicz, and Chin methods) showed higher values (390–476 tons), confirming the conservative nature of SPT-based predictions. The safety factors (2.43–2.97) met ASTM D1143 standards.

PLAXIS 3D simulations accurately replicated field-measured settlements, with a maximum deviation of <5%. The Hardening Soil model provided better agreement with load test results (6.66 mm settlement at 320 tons) by accounting for soil nonlinearity. Elastic settlement calculations (2.1 mm for single piles; 5.9 mm for pile groups) remained within permissible limits (25 mm).

Recommendations include optimizing pile length based on SPT stratigraphy and adopting Hardening Soil models for projects with cyclic loads. This integrated approach enhances cost-effective and safe deep foundation design for high-rise structures in urban areas with limited land availability.

ANALISIS DAYA DUKUNG AKSIAL TIANG TEKAN HIDROLIK DIAMETER 60 CM DENGAN MENGGUNAKAN UJI BEBAN STATIK AKSIAL DAN MENGGUNAKAN METODE ELEMEN HINGGA PADA PROYEK GEDUNG RAWAT INAP TOWER-1 RS HAJI MEDAN (BERDASARKAN DATA BH-3)

2025-05-30T06:15:35+00:00

In foundation analysis, the amount of bearing capacity and the settlement that occurs are two very important criteria. The foundation must have a bearing capacity capable of carrying the load above it, so that the load transfer system to the ground can operate while still controlling the decrease in clearance to maintain the stability of the construction above it.

This analysis is useful for calculating the amount of bearing capacity and settlement that occurs in the spun pile foundation of the Tower-1 Hospital Haji Medan Inpatient Building project, empirically using the finite element method using the PLAXIS 3D application with Mohr-Coulomb and Hardening Soil types.

From the analysis that has been carried out, the ultimate bearing capacity of the spun pile based on SPT data using the O’Neil dan Reese equation is 165.42 tons, while using the results of the interpretation of the loading test using the Davisson method gives a value of 330 tons, the Mazurkiewich method 430 tons and the Chin method 380 tons. For the settlement of a single spun pile, analytically using the results of the Axial loading test in the field, the settlement was 8.45 mm, analysis based on FEM PLAXIS 3D Mohr-Coulomb settlement was 10.99 mm and for Hardening Soil the settlement was 9.26 mm.

The conclusion from the analysis is that the safety values used during design and settlement analysis that are closest to the results in the field are analyzes using PLAXIS 3D with the Hardening Soil modeling type

ANALISIS PENGEMBANGAN INFRASTRUKTUR MENDUKUNG WISATA AIR ASOL. KAWASAN PULAU HARUKU, MALUKU : PENDEKATAN PERENCANAAN DAN PERANCANGAN DENGAN METODE AHP

2025-05-30T05:40:03+00:00

This study aims to analyze the development of supporting infrastructure for Asol Water Tourism in the Haruku Island area, Maluku, particularly in Negeri Oma, which possesses beautiful natural potential but is constrained by limited tourism facilities and infrastructure. The Analytical Hierarchy Process (AHP) method was used to determine priority development criteria through analysis of pre-construction, construction, and post-construction aspects. The results show that the dominant criterion in the pre-construction aspect is construction engineering with consideration of building structure and the environment, with a priority weight of 0.578. In the construction aspect, the dominant criterion is the application of project control principles related to time, quality, and cost, with a weight of 0.091. Meanwhile, in the post-construction aspect, the dominant criterion is synergy through the involvement of communities, the private sector, and universities to achieve operational independence, with a weight of 0.1156. In conclusion, these three aspects are expected to significantly contribute to the development of high-quality and environmentally conscious tourism facilities and infrastructure for Asol Water Tourism.

ALTERNATIF DESAIN SPILLWAY PROYEK PEMBANGUNAN BENDUNGAN CIBEET KABUPATEN BOGOR PROVINSI JAWA BARAT

2025-05-30T06:11:41+00:00

Indonesia, as an agrarian country, heavily relies on the availability of water for irrigation, raw water supply, and electricity generation to support industrial growth. One of the government’s efforts to ensure water availability is the construction of dams, including the Cibeet Dam, which serves to reduce flooding, provide raw water, support irrigation, and generate electricity. A crucial component of a dam is the spillway, which must be capable of accommodating excess water, especially during extreme flood events. This study aims to re-evaluate the spillway design of the Cibeet Dam using a hydraulic and structural stability analysis approach. The data used includes the Cibeet Dam planning documents, topographic data, hydrological data, geotechnical data, soil investigation data, climatological data, and reservoir capacity data. The analysis covers stability against overturning, sliding, seepage, and soil bearing capacity under three water level conditions (empty, normal, flood), and assesses construction cost efficiency. The results show that reducing the spillway crest width by 0.5 m only increases the head (Hd) by 2 cm. The spillway with an ogee crest and USBR II stilling basin is considered stable, with safety factors >1.5 under normal conditions and >1.2 during seismic events. The soil bearing capacity is also deemed sufficient to support the structure under all water level conditions.

ANALISIS PENANGANAN PENGARUH KERUSAKAN JALAN NASIONAL AKIBAT MUATAN BERLEBIH DI PROVINSI LAMPUNG

2025-07-07T07:30:59+00:00

Lampung Province, as the land gateway between Sumatra and Java, plays a vital role in Indonesia’s national road network. With 1,298 km of national roads managed by BPJN Lampung, the region supports high traffic from heavy vehicles. However, these roads face significant damage, primarily due to two factors: poor road management (including planning, execution, supervision, and maintenance) and the frequent passage of ODOL (Over Dimension Over Loading) vehicles. This study investigates the causes and key parameters of road damage in Lampung, aiming to identify the most dominant factors. Data were obtained from interviews, questionnaires, and road section records from relevant stakeholders and analyzed using the Analytic Hierarchy Process (AHP). The findings reveal that ODOL vehicles are the most significant cause of road damage, with a weight of 67%, while the International Roughness Index (IRI) emerged as the most critical parameter, holding a weight of 27%. These results underline the urgent need for tighter regulations on ODOL traffic and the prioritization of IRI as a core measure in assessing road quality. Enhancing monitoring and maintenance based on these insights is essential to improving road durability and ensuring sustainable transportation in Lampung Province.

MODEL PENANGANAN PENGARUH KERUSAKAN JALAN NASIONAL DI PROVINSI LAMPUNG (Studi kasus Jalan Soekarno Hatta Ruas Bakauheni – Tugu Radin Intan Provinsi Lampung)

2025-07-07T07:32:23+00:00

The Lampung Province holds a strategic position as a connecting route between Sumatra and Java, serving as a land logistics gateway between the islands. The national roads in this province play a crucial role in supporting economic efficiency by reducing time and distribution costs. However, the poor condition of road infrastructure—triggered by low pavement quality and excessive loading hinders trade and transportation activities and worsens interregional integration. This study aims to identify and analyze the main parameters causing road damage and to establish priorities for handling national roads in Lampung Province. Data were obtained through interviews, questionnaires, and documentation from relevant stakeholders. The method used is the Analytic Hierarchy Process (AHP). The analysis results indicate six main parameters causing road damage: International Roughness Index (IRI), Pavement Condition Index (PCI), drainage effectiveness, Remaining Service Life (RSL), Average Daily Traffic (LHR), and Vehicle Damage Factor (VDF). Based on AHP weighting, IRI received the highest weight (27%) and is identified as the primary indicator of road damage. The top priority for road maintenance is the Bts Sukamaju – Km 10 Panjang Bandar Lampung section, which stretches for 5 kilometers.

KINERJA NONLINIER RANGKA BAJA TER–BREIS KONSENTRIK KHUSUS PADA RENTANG KETINGGIAN 48-80 METER

2025-07-07T06:22:12+00:00

This study analyzes the nonlinear performance of Special Concentrically Braced Steel Frames (SCBF) in high-rise buildings exceeding the height limits stipulated in SNI 1726 (48 meters). Three case studies were selected, which are steel buildings with 48 (for benchmarking), 64, and 80-meter heights. Motivated by the urban demand for space efficiency and the crucial need for seismic resistance in steel structures, this study aims to evaluate the ductility and plastic hinge behavior of SCBF in multi-storey steel buildings. The primary objectives are to analyze SCBF structural performance, compare ductility parameters ) based on design and first yield results, and determine forces and deformations in braces during Design Basis Earthquake (DBE) and Maximum Considered Earthquake (MCE) events. The methodology involves nonlinear pushover analysis using MIDAS GEN 2024 software, including plastic hinge and fiber element modeling. The results indicate that SCBF performance in 48 and 64 m building heights experienced plastic hinge failure in the braces during MCE, yet met DBE limitations. Only the 20-story building satisfied MCE limits. Comparisons of and values show consistency with the design plan but are lower at first yield compared to SNI 1726.

ANALISIS PENGAMBILAN KEPUTUSAN PENGGANTIAN ALAT BERAT EXCAVATOR DAN BULLDOZER PADA PT. X MENGGUNAKAN METODE DEFENDER - CHALLENGER

2025-05-30T06:08:01+00:00

Management of heavy equipment such as bulldozers and excavators is an important aspect carried out by PT. X in order to maintain the company's performance and economic stability. By considering the economic life of heavy equipment, the defender - challenger method using the concept of annual equivalent value can be used to conduct an analysis of heavy equipment replacement through several replacement scenarios. The research conducted focused on the BL 032 - 20 bulldozer and CE 130 - 20 excavator with a total of 7 replacement scenarios starting from after the economic life of the heavy equipment (4 years) has expired to 6 years after the economic life of the heavy equipment has expired. From the results of the scenarios carried out, it was found that the bulldozer heavy equipment will obtain the highest annual equivalent value of Rp. 138,582,757 in the scenario 5 or 4 years after the economic life of the equipment has expired, namely in the year or when the age of the heavy equipment is 8 years. Meanwhile, the excavator will obtain the highest annual equivalent value of Rp. 204,325,033 in the 4 or 3 year scenario after the equipment's economic life is over, namely in 2026 or when the heavy equipment is 7 years old. With the results of this analysis, it can be used as a benchmark in considering the timing of heavy equipment replacement for PT. X to obtain maximum profit from each piece of heavy equipment.

A Journal TRAFFIC PERFORMANCE ANALYSIS DUE TO SHOPPING CENTER ACTIVITIES (Case Study of Ahmad Yani Street, Ketintang Street and Ahmad Yani-Ketintang Street Intersection Surabaya)

2025-07-07T07:08:45+00:00

The growth of commercial areas in urban areas, especially shopping centers, has contributed significantly to the increase in traffic volume. This study aims to analyze the influence of Royal Plaza visitor activities on traffic volume and degree of saturation on the Jalan Ahmad Yani network, Jalan Ketintang, and the Ahmad Yani-Ketintang intersection in Surabaya City. The method used refers to the Indonesian Road Capacity Guidelines (PKJI) 2023, with primary data collection through a traffic volume survey for four days in three time periods (day, evening, night), then analyzed to obtain capacity values, actual volume, and degree of saturation (DS) on each road segment. The results of the analysis show that the highest traffic volume was recorded at 5444.70 SMP/hour on Jalan Ahmad Yani, with a road capacity of 5115.64 SMP/hour, resulting in a degree of saturation (DS) value of 1.06. This value indicates that the level of road service is in category F, which reflects very saturated traffic conditions and congestion. Meanwhile, the Ahmad Yani–Ketintang intersection shows DS ranging from 0.85 to 1.19, depending on peak times. This finding confirms that the presence of Royal Plaza places a significant traffic burden on the surrounding road network, and a traffic management strategy is needed to mitigate the impact and improve road service performance.

Implementasi BIM (Building Information Modeling) Terhadap Peningkatan Akurasi pada Perhitungan Estimasi Biaya Proyek Pembangunan Jalan Jalur Lintas Selatan (Jls) Lot 3 Pantai Serang – Sumbersih

2025-06-05T10:16:24+00:00

The development of technology has significantly influenced the construction industry, introducing innovations that enhance project execution efficiency and accuracy. One of the notable advancements is Building Information Modeling (BIM) is a digital representation of a building that fully illustrates its form, size, and functional aspectsThis study aims to implement Building Information Modeling (BIM) for Quantity Take Off (QTO) using Autodesk Revit 2025 and compare its results with conventional methods in terms of volume and cost estimation accuracy. The research object is the South Cross Road Construction Project (JLS) Lot 3 from Pantai Serang to Sumbersih. This comparative quantitative study utilizes Detail Engineering Design (DED) documents and 3D modeling with Autodesk Revit 2025. The findings show that BIM-based QTO produces more accurate and efficient cost estimations, especially in complex calculations such as cut and fill operations. The BIM method resulted in a total project cost that was 13.73% higher than the conventional method, primarily due to more precise terrain modeling. This research is expected to be a reference for improving the accuracy of infrastructure project cost estimation.

ANALYSIS OF URBAN TRAFFIC FLOW PERFORMANCE ON RAJAWALI STREET SURABAYA OLD TOWN

2025-07-18T02:58:12+00:00

The Surabaya Old Town Tourism Area, particularly along Rajawali street, has experienced increased traffic activity due to the high number of tourist visits, especially on weekends. This situation has led to roadside frictions that impact road performance. This study aims to analyze the roadside frictions and traffic volume along the road segment. A quantitative approach was applied, based on the Indonesian Highway Capacity Manual (MKJI) 1997. Primary data were collected through field surveys conducted over seven consecutive days during peak hours (4:00 PM–8:00 PM) and analyzed to identify traffic characteristics at the study location. The results of the study showed that side obstacles were in the moderate to high category, with the highest traffic volume of 2,881 smp/hour on Saturday.

ANALYSIS OF THE QUALITY COMPONENTS OF RIGID ROAD PAVEMENTS IN RELATION TO VEHICLE VOLUME USING THE PD T-14-2003 METHOD AND THE SNI 8457 2017 METHOD

2025-07-07T07:13:49+00:00

Highways are vital infrastructure in supporting land transportation systems, community mobility, and logistics distribution. To ensure safety, comfort, and structural durability, highway pavement design must be based on appropriate technical standards. This study aims to analyze the quality components of rigid highway pavement based on vehicle volume using two methods: Pd T-14-2003 and SNI 8457:2017, with a case study on the pavement project of the Cimanying–Jipu highway section. Primary data was obtained through field observations, while secondary data was obtained from relevant agencies, including traffic volume, vehicle types, and projections of average daily traffic growth. Based on a subgrade CBR value of 26%, both methods resulted in a concrete layer thickness of 20 cm, with concrete quality K-175 (Pd T-14-2003) and K-225 (SNI 8457:2017). Detailed calculations show differences in reinforcement specifications between the two methods. The analysis results indicate that SNI 8457:2017 specifies smaller dowel dimensions but with closer installation spacing, while Pd T-14-2003 requires larger reinforcement dimensions. This study helps provide recommendations for selecting a more economical and effective rigid pavement design method based on traffic conditions and site characteristics.

COST-BENEFIT ANALYSIS OF RIGID PAVEMENT ROAD CONSTRUCTION USING EXPONENTIAL, NPV, AND ERR METHODS (CASE STUDY: CIMANYING-JIPUT ROAD SECTION, PANDEGLANG, BANTEN)

2025-07-07T07:27:23+00:00

This study aims to analyze the economic feasibility of rigid pavement road construction through a comprehensive cost-benefit analysis using Net Present Value (NPV), Economic Rate of Return (ERR), and exponential methods, with a case study on the Cimanying-Jiput road section in Pandeglang, Banten. This research employs a quantitative approach where data collection was conducted through field surveys to obtain primary data and documentation from relevant agencies to gather secondary data. The economic feasibility assessment uses NPV and ERR methods, where a project is considered economically feasible if it yields an NPV greater than zero and an ERR exceeding the Bank Indonesia discount rate of 4.60%. The calculation results show that the Net Present Value (NPV) is Rp. 5,687,857,786, and the Economic Rate of Return (ERR) is 15%. Both indicators demonstrate that the benefits generated exceed the costs incurred. Based on the cost-benefit analysis using NPV and ERR methods, the construction project for the Cimanying-Jiput road section is economically viable and recommended for implementation. The positive NPV and ERR values above the discount rate indicate that the project will generate substantial economic benefits for the community and transportation system in the region.

COST AND TIME EVALUATION WITH TIME COST TRADE OFF (TCTO) METHOD IN TIJ TUNNEL CONSTRUCTION (JOYOBOYO INTERMODA TERMINAL)

2025-07-18T03:03:25+00:00

Infrastructure development is one of the main indicators in supporting city development, especially in metropolitan areas such as Surabaya. One of the strategic projects being designed is the construction of a pedestrian tunnel that will connect the Joyoboyo Intermodal Terminal (TIJ) with the Surabaya Zoo (KBS). This study aims to optimize the cost and completion time of the project through a case study of the construction of a pedestrian tunnel between TIJ and KBS. Based on the contract's provisions, this project is scheduled to be completed within 156 calendar days, starting on May 30 2024, and ending on November 21, 2024. As an effort to optimize the cost and duration of project implementation, the Time Cost Trade Off (TCTO) approach is used. Through the application of this method, the results obtained that the addition of working time (overtime) for 3 hours per day on the work item of reinforced concrete walls with a thickness of 60 cm and concrete quality Fc'35 MPa (PC 450) is quite effective in accelerating project completion from 156 days to 145 days. In addition, the optimum cost generated is Rp14,116,469,946.62, which means a cost saving of Rp43,510,269.42 compared to the normal cost. From the analysis results, the project time efficiency is 0.31%.

Pengaruh Kebersihan Agregat terhadap Kuat Tekan Beton dan Implikasinya pada Konstruksi Struktural Sederhana

2025-07-22T04:57:22+00:00

Aggregate is the primary component of concrete, comprising 60–75% of its total volume; thus, its quality greatly influences the final performance of the concrete. Technical standards such as SNI 03-2834-2000 and ASTM C33/C33M recommend that aggregates be free from impurities such as silt and clay to ensure proper bonding and long-term durability. However, in small- to medium-scale construction, unwashed aggregates are still commonly used due to economic and logistical constraints. This study aims to evaluate the effect of aggregate cleanliness on compressive strength and explore its practical implications for low-rise residential buildings. The research was conducted through a laboratory experiment using two aggregate conditions (washed and unwashed), a mix ratio of 1:2:3, and compressive strength testing at 7, 14, and 28 days. The results indicate that concrete made with unwashed aggregates exhibited consistently higher compressive strength (by 0.9–1.1 MPa) compared to concrete with washed aggregates. This is likely due to a filler effect from fine particles that enhance the concrete’s density. However, high silt content may still compromise long-term durability. The findings suggest that locally sourced, unwashed aggregates could serve as an alternative for structural concrete in low-rise housing, provided proper quality control and technical validation are implemented.

OPTIMALISASI KUAT TEKAN BETON GEOPOLIMER MENGGUNAKAN FLY ASH DAN ABU SEKAM PADI

2025-07-19T05:20:19+00:00

Concrete is a widely used construction material, but its environmental impact, particularly the CO? emissions, has led to the search for more eco-friendly alternatives. Geopolymer concrete, utilizing fly ash and rice husk ash as binders, presents a promising alternative to conventional concrete. This study aims to investigate the effect of varying the composition of fly ash and rice husk ash on the mechanical properties and workability of geopolymer concrete. The mix variations used consisted of fly ash and rice husk ash ratios of 100:0, 80:20, 70:30, and 50:50, with an alkaline activator solution of 12M NaOH and Na?SiO? in a 1:2.5 ratio. The results showed that the 100% fly ash mix produced the highest compressive strength of 23.13 MPa and a slump value of 8.0 cm, indicating good performance in both strength and workability. On the other hand, increasing the rice husk ash proportion led to a decrease in compressive strength and slump, with the lowest values observed at the 50% rice husk ash mix, which resulted in a compressive strength of 17.20 MPa and a slump of 5.5 cm. Based on these results, it can be concluded that fly ash remains the superior binder for geopolymer concrete, while rice husk ash can be used in controlled proportions to support environmental sustainability. Further research is recommended to explore the use of other additives and conduct microstructure analysis to enhance the performance of geopolymer concrete.

PROTOTYPE DESAIN GEDUNG DAMKAR DALAM MENUNJANG KEGIATAN PROTEKSI KEBAKARAN DI JAKARTA

2025-07-07T07:53:31+00:00

This research proposes a prototype design for a sub-district level fire station (Damkar) in Jakarta to address operational challenges faced by fire services in both urban and sub-urban areas. The background includes the high frequency of fire incidents, unequal distribution of fire posts, and the absence of a standardized small-scale fire station design tailored to local needs. The study employs a descriptive-analytical and comparative approach, using field observations, literature review, interviews, and spatial analysis based on fire distribution, accessibility, and environmental characteristics. The design adopts the Container Activity theory to optimize spatial zoning and enhance response time. The proposed prototype integrates three core functions: (1) operational – through direct connections between standby areas, vehicle garages, and access routes; (2) educational – by incorporating public training and fire simulation facilities; and (3) flexibility – via multipurpose rooms adaptable to various emergency scenarios. The project site is located in Mangga Besar Sub-district, West Jakarta, selected for its high population density and limited fire service access.The results conclude that this prototype design enhances fire service efficiency while simultaneously serving as a community fire education center. The research contributes to the development of localized, efficient, and context-sensitive fire station design standards, and supports future urban spatial planning and disaster mitigation policies.