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Fondasi: Jurnal Teknik Sipil
ISSN : 23024976     EISSN : 25031511     DOI : http://dx.doi.org/10.36055/jft.v9i1.7440
Core Subject : Engineering,
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.
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Articles 303 Documents
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: 10.36055/fondasi.v13i2.29058

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 in order 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 worncoated 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: 10.36055/fondasi.v13i2.28256

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.
MODELING OF WATER SEEPAGE AT SINDANG HEULA DAM Kusumaningrum, Winda; Purnaditya, Ngakan Putu; Fathonah, Woelandari; Priyambodho, Bambang Adhi; Subekti, Subekti; Nabila, Firyaal
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.29289

Abstract

A embankment dam is a dam built by stockpiling materials such as stones, gravel, sand, and soil on a certain composition with the function of carrying or lifting the water surface contained in the reservoir [1]. One of the structural safety of a embankment dam is against water seepage. Water seepage that occurs on the slope body during flooding can affect the decrease in slope stability, where the seepage will cause piping symptoms [2]. This study aims to determine the seepage discharge value that occurs in the dam body. The object of this study was Sindang Heula embankment dam in Banten Province. The method used is to conduct an analysis using GeoStudio software with the SEEP/W feature for seepage discharge. Simulation run in two scenarios as steady state condition and transient. Both scenario also run at least on three reservoir water level conditions. They are water level during flood, normal water level and half of full water level. Steady state condition gave seepage flux about 3.773×10-6 m3/sec/m2 as maximum value. In another hand, 30 days transient simulation gave maximum value about 8.7188×10-4 m3/sec/m2 and it occurred in small reference time after initial run. This study infomed that SEEP/W has capability to simulate water flux through porous media of embankment dam.
Stabilization of Expansive Clay Soil with Fly Ash and Ground Granulated Blast Furnace Slag Materials on UCT Values Kusuma, Rama Indera; Abdurrohim, Abdurrohim; Vihawian, Vini; Mina, Enden; Fathonah, Woelandari
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.28231

Abstract

Land is one of the important elements in construction projects and must have a high bearing capacity to support the structure above it. Civil construction, whether roads, buildings, or other structures, will last a long time if one of the factors is supported by a good subgrade. The location of the road in Sudimanik Village has soil classified as expansive clay, which has a high shrinkage capacity due to changes in water content. One way to improve unstable soil is by adding materials such as Fly Ash and Ground Granulated Blast Furnace Slag (GGBFS).The purpose of this study was to determine the characteristics of the soil based on the classification and physical properties of the soil using the Unified Soil Classification System method and to determine the characteristics of the soil and the effect of adding consistent variations of fly ash at 20% and variations in the percentage of GGBFS 0%, 10%, 20%, and 30% as additional material for soil stabilization against the Unconfined Compression Test value with variations in curing time of 0, 7, 14 and 28 days.The addition of fly ash and GGBFS/slag cement substantially increased the unconfined compressive strength of the soil over time. The maximum mixture for increasing the unconfined compressive strength was achieved with 20% fly ash and 30% GGBFS in variation E, indicating that this combination is very effective for increasing the soil strength in this area.
Crafting and Testing an Elementary Device for Transporting U Ditches for Hands-on Learning in Road and Bridge Engineering at Technical High Schools Ratna Putri, Mukhlisya Dewi; Mursid, Mursid
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.28455

Abstract

This research aims to develop a simple and effective tool for moving U- shaped drainage channels (U ditch) with the aim of helping construction workers and farmers move U ditch more easily and efficiently. For this reason, this research takes the title "Development and Evaluation of a Simple Tool for Moving U Ditch as a Practice Tool for Vocational Engineering Students in Road and Bridge Design”. This research also provides practical training facilities for road and bridge design engineering vocational students. The research method used is to make prototypes of tools from materials that are durable and easily available, and then tested in the field. The research results show that the developed tool can increase effectiveness and efficiency in moving U ditch at low cost. It is hoped that this research can contribute to the development of better and more innovative construction technology. From all the processes carried out, this research is classified as TKT scale 3 with a national research focus area of Engineering Engineering which has a national research priority for 2020 - 2024 to produce added value. It is hoped that the indicators in the TKT 3 categories can be met, from the methodological design used to answer the research questions that has been prepared to producing a simple tool design for moving u-ditch for practical learning. The scientific publications that can be produced from this research include the Accredited National Journal : SNIV Journal.
Analysis of Trip Generation and Attraction Model in South Tangerang City Budiman, Arief; Bethary, Rindu Twidi; Suzanti, Wiwien; Kusuma, Fadiah Indriani
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.29285

Abstract

South Tangerang City encounters a significant increase of population every year, due to the rapid development of South Tangerang City. The increase in population causes a high demand for housing, jobs, and more. These needs cause many land uses changing function. Land use change must be accompanied by transportation planning so it does not cause traffic problems like congestion. The generation model is the early stage of urban transportation planning, the modelling of trip generation and attraction in South Tangerang City is carried out to find out the factors causing the trip generation and attraction in this city and to gain the best model. The parameters of the model is the land use in the city that was received from the government of South Tangerang City. The analysis was made in stages starting from validity and reliability test, correlation test, linearity test, and the final one is multiple linear regression test with stepwise method type 1. Based on the analysis result, the factor that has the greatest influence on trip generation in South Tangerang City is number of primary educational facilities (elementary school, islamic elementary school, junior high school, and islamic junior high school) (X3) with the selected model is Y1 = 1129,265 + (383,198) X3 and the value of R2 = 0,809. Furthermore, the factor that has the greatest influence on trip attraction in South Tangerang City is number of hospitals (X6) with the selected model is Y2 = 69668,640 – (3372,120) X6 and the value of R2 = 0,826.
Experimental Study of Joint Tool Variations in Cold Rolled Steel Structure Connection Systems C75 – 0,65 mm Kuncoro, Hendrian Budi Bagus; Indianto, Andi; Putri, Mukhlisya Dewi Ratna
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.28646

Abstract

C75 cold rolled steel is a material used in building construction with a lighter weight compared to conventional steel. One important aspect in the design of C75 light steel is the connection, where the connection must be designed safely so it is very important to maintain the structural integrity of the building and ensure the safety of building users. The aim of the research is to obtain the correct formulation for the C75 mild steel connection type in relation to the thickness of the C75 cold rolled steel. The method used is to create a connection system in the form of a variety of connections consisting of connections using screws only, combined screws and bolts, and connections using rivet nails. Overall, from the test results, it was found that the use of mild steel connections with a modified model between screws and bolts produced a greater value compared to using rivet connection tools alone or screws alone, this happened the same for every thickness of mild steel tested, both thickness 0, 65 mm, 0.75 mm or 1.00 mm. The greatest results were found in the connection of 4 screws and 1 bolt at a mild steel thickness of 1.00 to 100.00 N with a deflection of 2.58 mm. When compared with rivets, the increase reached 42.50%, while compared with screws, there was an increase of 20.00%. So rivet connections are brittle compared to screws and screw and bolt connections are a more ductile connection, so they can be recommended as connections in light steel. It's just that mild steel which has a greater thickness tends not to cause buckling compared to mild steel which is much thinner, where buckling is likely to occur in the mild steel material.
Analysis of Time and Cost Acceleration with Crashing Method on Apartment Construction Project in Bekasi City Maddeppungeng, Andi; Asyiah, Siti; Intari, Dwi Esti; Ujianto, Rifky; Damanik, Mariana Feronica; Ashidiq, Alifian Taufiq
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.29034

Abstract

In the implementation of construction projects, problems are often found, such as delays. One of the solutions is by accelerating. Acceleration is not only done to overcome delays, but can also be done if there is a special request from the owner. This study discusses the acceleration of time and cost using the crashing method in an apartment construction project in Bekasi City, which aims to determine the optimal time and cost of the three alternatives used. The work that is accelerated is some structural work that is on the critical path. Acceleration is carried out with three alternatives, namely the addition of working hours, the addition of labor, and the combination of additional working hours and additional labor. The results showed that with the alternative of adding working hours, the implementation time was 298 days at a cost of Rp. 140,751,032,332, obtaining a time efficiency of 5.7% and a cost efficiency of 0.42%. With the alternative of adding labor, the implementation time is 292 days at a cost of Rp. 140,092,976,595, 7.59% time efficiency and 0.89% cost efficiency are obtained. With the alternative of adding working hours and additional labor, the implementation time is 290 days at a cost of Rp. 139,912,527,724, 8.23% time efficiency and 1.02% cost efficiency are obtained. Then it can be concluded that the alternative with the most optimal time and cost is the combined alternative of adding working hours and adding labor.
Value Engineering Analysis of Architectural Works in Construction Projects (Case Study of Citra Arafiq Serang Hospital Development) Maddeppungeng, Andi; Asyiah, Siti; Intari, Dwi Esti; Setiawati, Dwi Novi; Damanik, Mariana Feronica; Rizky, Eky Muhammad
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.29155

Abstract

The development of construction projects cannot be separated from project control management, one of which is construction cost management. In its implementation, there are many problems that cause cost overruns. The objectives of this research are to identify architectural work components that have the potential to be value engineered, to determine the difference in project costs before and after value engineering is applied, and to determine the project cost efficiency obtained after the application of value engineering. The research method used in this research is Value Engineering Work Plan which consists of information stage, function analysis stage, creative stage, evaluation stage, development stage, and recommendation stage. Life Cycle Cost (LCC) analysis and Analytical Hierarchy Process (AHP) method were used to determine the value of work efficiency. From the results of the research, it was found that walls, partitions, ceilings, and floors are architectural work items that can be applied to VE Analysis. The cost difference from the results of replacing the initial design with the recommended design, obtained a total cost savings of Rp 2.454.714.553,78 from the total cost of architectural work of Rp 11.178.625.221,13.
Ogan Ilir District Waste Transportation Cost Calculation Model Using an Engineering Economics Approach Akhirini, Akhirini; Firda, Ani; Permatasari, Rosmalinda; Bethary, Rindu Twidi
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.28365

Abstract

One issue that might lead to environmental disturbances in Indonesia's varied areas is solid waste. It is possible to execute waste management effectively, and one such implementation is the installation of waste transportation. If waste transportation fleet is unable to handle the current waste generation, which may result in waste accumulation, then the problem of transporting waste may arise. In order to address this issue, assistance is required in the form of waste transportation costs. In accordance with the local conditions at the time of the study, this paper analyzes the calculation of waste transportation fees. The collection of information was done to determine how solid waste transportation was currently operating, including the number of vehicles, the distance that went, their rotation, and their carrying capacity. According to the study's findings, the cost of solid waste transportation is Rp. 3,277/km or Rp. 21,257/m3 for armroll trucks and Rp. 5,980/km or Rp. 86,459/m3 for dump trucks. These findings show that the fee for Armroll trucks is higher than the levy for dump trucks. This is because Armroll vehicles have a longer service route and use more fuel.