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Fondasi: Jurnal Teknik Sipil
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 23024976     EISSN : 25031511     DOI : http://dx.doi.org/10.36055/jft.v9i1.7440
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Transportation
Terbitan berkala yang mempublikasikan hasil penelitian yang berkaitan dengan pengembangan sains dan teknologi dalam bidang teknik sipil (Struktur, Transportasi, Geoteknik, Sumber Daya Air dan Manajemen Konstruksi) sebagai bentuk kekayaan intelektual. Diterbitkan sebanyak 2 kali dalam satu tahun yakni pada Bulan April dan Oktober.
Arjuna Subject : -
Articles 303 Documents
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Flood Analysis of the Kedung Ingas River and Pabean River the Cilegon City Waita, Stanley Reynaldi Frits Sirway; Priyambodho, Bambang Adhi; Purnaditya, Ngakan Putu; Fathonah, Woelandari; Subekti, Subekti; Nabila, Firyaal
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.32284

Abstract

The Kedung Ingas River and Pabean River the Cilegon City often flood every year. It has an impact on losses and disruptions to public facilities and settlements such as highways, Cilegon Regional Hospital, Metro housing and residential areas located close to the river. The purpose of this study is to determine the amount of design discharge at 10, 25 and 50 years return period. The methods used to calculate the design flood discharge are Rational, Der Weduwen, and HSS Nakayasu. Based on the results of the study, the design flood discharge of the Kedung Ingas River and the Pabean River with Q10 = 121.25 m3/s, Q25 = 131.01 m3/s, and Q50 = 138.79 m3/s. The design flood discharge value used is the calculation value using the selected method, namely Nakayasu Synthetic Unit Hydrograph.
Evaluation of PDIR-Now Satellite Rainfall Data on Observational Rainfall Data (Case Study: Taktakan District, Serang City, Banten) Lutfiah, Qonita; Purnaditya, Ngakan Putu; Priyambodho, Bambang Adhi; Wigati, Restu; Subekti, Subekti
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v13i2.32727

Abstract

Rainfall data is one of the vital initial inputs in the hydrological analysis, but it is often incomplete due to various constraints such as damage to measuring instruments or uneven distribution of measurement stations. To overcome this problem, weather observation with satellites can be used. However, before using satellite rainfall data, it is necessary to test its suitability with field data to ensure its accuracy. This study aims to evaluate the PDIR-Now satellite rainfall data on observation rainfall data in Serang City to determine the feasibility of using satellite rainfall data and the influence of rain periods (daily (>50mm/day), 15 days, and monthly) on the reliability of satellite data. The analysis method in this study uses statistical analysis in the form of regression analysis at the calibration stage and RMSE, NSE, and Pearson (r) correlation coefficient at the validation stage. Based on the results of the study , it is known that the PDIR-Now satellite can estimate the best rainfall in the monthly period.
Strength Analysis of Existing Upper Structure of Right Wing Building Jambi University Teaching Hospital Nuklirullah, M.; Dwina, Dila Oktarise; Ofronazel, Ekom
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v13i2.32680

Abstract

The building of the Teaching Hospital at Jambi University has stopped until now with the current development of physical development in the form of the upper structure work stage of the building. To be able to resume the physical construction of the RSP UNJA building, it is necessary to have a technical study in the form of an evaluation of the building's current structural state, to ensure that the existing structure has good strength and is feasible to continue the stages of work until it is completed according to planning. The technical standards used by the planning consultant in its 2015 planning used old standards, while the standards used have been updated with the latest technical standards. Building planning data and existing data on completed work are gathered as part of the evaluation approach employed in this study, then an analysis is carried out based on the latest standards. The analysis's findings indicate that while all floor slab structure elements at every level satisfy the requirements for moment strength and shear force, some beam elements in specific locations do not, and all column types satisfy the requirements for axial strength but some column elements in specific locations do not meet the requirements for shear force strength. From the results of the analysis and conclusions, it was obtained that some of the existing structures meet the strength requirements which means that they can withstand the load of the working service.
Evaluation of Road Performance and Need for Crossing Facilities in the PT Nikomas Gemilang Area Budiman, Arief; Intari, Dwi Esti; Suzanti, Wiwien; Faishal, Achmad
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.32286

Abstract

PT Nikomas Gemilang area is a highly active zone. Besides being an industrial area with heavy traffic, the location has market activities with many pedestrians crossing the road, causing traffic disruptions. This research discusses the performance of a road in providing service to the traffic flow occurring on the road, analyzes the problems that hinder traffic on a section of the road, and seeks solutions to the traffic hindrances. This research aims to determine the level of service (LOS) of the road and the type of pedestrian crossing facility needs. The research uses the PKJI 2023 reference standards and the Bina Marga Guidelines of the Minister of Public Works Regulation (Permen PU) No: 02/SE/M/2018. The results of this study obtained the performance of the segment on Jalan Raya Serang, in front of the PT Nikomas Gemilang area, Kibin District, where the saturation degree on Side A was 0,70, and on Side B was 0,69 with a level of service (LOS) of C. Therefore, a future road performance estimation was conducted. The road performance feasibility for the next 2 years (2026) was obtained with an estimated saturation degree on both sides of the road of 0,82 (approaching critical). Then, the need for a type of crossing facility on Jalan Raya Serang was determined with a road type of 4/2-TT and a P value of 596 people/hour, V value of 9554 vehicles/hour, and a PV2 value of 5,44×1010, leading to the conclusion that the type of crossing facility needed is a pelican cross.
Seismic Response Analysis of Plus-Shaped Building with Various Re-Entrant Corner Ratios Using Time History Approach Ruhma, Devi Yusufi; Nindyawati, Nindyawati
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.30682

Abstract

The construction of high-rise buildings with irregular geometry has now become common due to land limitations and development demands. However, during an earthquake, irregular buildings are more susceptible to structural damage compared to regular buildings. Therefore, this article presents information related to the behavior of 13-story, plus-shaped buildings to seismic forces from the recorded accelerations of the Chuetsu-oki, Chi-Chi, Kise, and Tokachi-oki earthquakes. This study aims to determine how the variation of the re-entrant corner ratio will affect the behavior of the structure in response to these seismic forces so that the selection of the plus shape in structural planning can be taken into consideration. The method used in the analysis is experimental simulation, starting from data collection to earthquake analysis and structural response. The results show that the re-entrant corner ratio increases the torsion moment against the regular model by a maximum of 67,52% for a ratio of 0,22, by 162,64% for a ratio of 0,44, and by 106,41% for ratios of 0,36 (X-dir.) and 0,58 (Y-dir.). It means that as the re-entrant corner ratio increases, there is an amplification of the torsional moment, which leads to a worse re-entrant corner stress concentration. The shape of motion that occurs also becomes increasingly complex, involving both translational and torsional movements simultaneously. Meanwhile, the base shear value is influenced by the earthquake acceleration and structural response.
Design Of Reinforced Concrete Slender Columns In a 3-Story Residential Building Wahyu N, Angga Fandam; Baehaki, Baehaki; Soelarso, Soelarso; Darwis, Zulmahdi
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v13i2.32719

Abstract

In some building designs that carry a high aesthetic or architectural value, the use of flat columns brings a number of significant advantages. Their slender design provides more flexibility in interior layout and adds to the aesthetic value of the building. This study was conducted to determine the reinforcement requirements and behavior of flat columns as well as checking the displacement in accordance with SNI 1726:2019. The results show that column I and column L are categorized as swaying and long columns, while column T and column Plus are included in the category of non-swaying and short columns. The required reinforcement requirements are as follows: For column I with dimension 130 x 800, 10D16 main reinforcement is required with D10-100 mm stirrups inside the plastic joint area and D10-150 mm outside the plastic joint area. Column L of dimension 130 x 500 requires 16D16 main reinforcement with D10-100 mm stirrups both inside and outside the plastic joint area. T columns of dimension 130 x 500 require 10D16 main reinforcement with D10-100 mm stirrups inside and outside the plastic joint area. Plus columns of dimension 130 x 400 require 12D16 main reinforcement with D10-100 mm stirrups inside and outside the plastic joint area. The maximum defelction that occurs is still within the permissible tolerance limits of 15.32 mm in the X direction and 11.15 mm in the Y direction so that the building structure is declared safe and stable against the loads received in accordance with SNI 1726: 2019.
Analysis of Optimization of Cross-Sections and Reinforcement of Building Structures Based on SNI 2847-2019 and SNI 1726-2019 Rizik, Ahmad Farhan; Soelarso, Soelarso; Baehaki, Baehaki; Darwis, Zulmahdi
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v13i2.32521

Abstract

Efficiency in structural design is important to optimize the use of materials and costs, while maintaining strength and stability to ensure the safety of the building. With construction design regulations constantly updated, careful and precise planning calculations are crucial. This study identifies overdesign in columns, beams, and foundations of existing buildings, and aims to determine more optimal and efficient dimensions and repetitions, resulting in stronger, more economical, and standard-compliant buildings. The research was conducted in a 4-storey office building with dimensions of 32 x 15,725 meters will be analyzed based on SNI 2847:2019, SNI 1726:2019, and SNI 1727:2020. The analysis was carried out using Microsoft Excel and ETABS. The results of the study showed that there was overdesign in the main column, main beam, and foundation. On a beam of 400mm x 650mm it produces an efficiency of 17.46%. The bending reinforcement requirement results in an efficiency of 21.785%. Meanwhile, the shear reinforcement and middle reinforcement are the same as the initial planning. In a 450mm x 700mm column it produces an efficiency of 16%. For shear reinforcement, an efficiency of 10% is obtained. As for the bending reinforcement, it is the same as the initial planning. In the foundation design, 4 square piles with dimensions of 450mm x 450mm and pilecap dimensions of 2600mm x 2600mm x 500mm with reinforcement requirements for the x direction D22-100 and the y direction D22-125. Resulting in a pilecap volume efficiency of 28.888%.
Evaluation Of Priority Criteria For Selecting Subcontractors In Highway Construction Projects In Nusantara Capital City (Ikn) Project Alekander, Rengki; Wirjodirdjo, Budisantoso
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.31016

Abstract

The selection of appropriate subcontractors plays a critical role in the success of construction projects, particularly in strategic infrastructure projects such as Section 6B of the Highway Construction Project in Nusantara Capital City. This project experienced delays and cost deviations of 4.43% due to subcontractor selection based solely on two common criteria—experience and lowest price—while neglecting additional important criteria such as technical qualifications and managerial capabilities, which could mitigate project risks. This study aims to identify and analyze subcontractor selection criteria to enhance project success and reduce delays and cost overruns based on the experience and assessments of stakeholders. Previous research indicates that commonly used methods have not sufficiently addressed issues of delays and cost deviations. Therefore, this study explores more effective methods, employing the Delphi, DEMATEL, and ANP methodologies. The Delphi method, through three survey rounds, identified seven criteria and sub-criteria. DEMATEL was then applied to assess relationships among these criteria, identifying dominant causal or effect factors. Finally, the ANP method determined priority criteria and sub-criteria. The results revealed that Price held the highest priority weight (23%), followed by Quality (21%), Technical (18%), Delivery (13%), Organization (8%), and Internal (6.5%). Among sub-criteria, Bid Price had the highest weight (16%), followed by Standard Quality (8%) and others with similar significance
Use of Nickel Slag as An Aggregate Replacement Material In Weared Asphalt Concrete Mixtures Bethary, Rindu Twidi; Intari, Dwi Esti; Pradana, Muhammad Fakhruriza; Al Hadiana, Muhamad Fadhil
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v13i2.32729

Abstract

The increase in development growth throughout the world every year is directly proportional to the increase in demand for construction materials. To overcome the very limited sources of natural materials, alternative materials are needed as substitutes for construction materials. Utilizing nickel slag waste as an alternative material to replace natural aggregate to reduce the extraction of excess natural aggregate and preserve limited natural resources. The purpose of this study was to determine the Marshall characteristics and ideal composition for using nickel slag as a substitute for aggregate in worn-coated asphalt concrete (AC-WC) mixtures. The test specimens used were a mixture of worn coated asphalt concrete (AC-WC) with variations in nickel slag content, namely 0%, 10%, 40% and 70% and optimum asphalt content (KAO) respectively of 5.5%; 6%; 5.5%; and 5%. Based on the results of study that has been carried out, the optimum stability value was obtained at 1087.38 kg at a nickel slag content of 70% with an optimum asphalt content (KAO) of 5%. This value is greater than the stability value obtained at a nickel slag content of 0% with an asphalt content. optimum 5.5%, namely 1034.39 kg. From these results it can be concluded that nickel slag can improve the performance of worn coated asphalt concrete (AC-WC) mixtures and the ideal composition of nickel slag is at a nickel slag content of 70% with an optimum asphalt content (KAO) of 5%.
The Effect of Fly Ash-Based Geopolymer Proportion on the Specific Gravity of Mixed Soil Fathonah, Woelandari; Kusuma, Rama Indera; Mina, Enden; Baehaki, Baehaki; Rizka, Bella
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v13i2.32682

Abstract

Road construction planning must consider the characteristics and strength of the soil. This study aims to determine the classification of soil and the effect of fly ash-based geopolymer as an added material on the specific gravity of soil. Specific gravity testing was carried out using a pycnometer to obtain the specific gravity of the soil. The test object used is a soil sample added with geopolymer with fly ash as raw material and an alkaline activator (Na2SiO3and NaOH). The NaOH concentration is 10 M with a solution ratio of 2.0 (Na2SiO3 to NaOH), fly ash content of 20%, and variations in S / L (fly ash to activator) levels of 1/2 and 1/2.5. Based on the research that has been done, the results show that the soil used in the study is included in the organic clay soil with a specific gravity value of 2.49. The effect of fly ash-based geopolymer in this study increases the specific gravity value, with a specific gravity of 2.60 for variation B (80% soil, 20% FA, S/L 1/2) so that the soil falls into the organic clay category and 2.69 for variation C (80% soil, 20% FA, S/L 1/2.5) so that the soil falls into the non-organic clay category.

Page 29 of 31 | Total Record : 303

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