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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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Changes in The Flexural Strength Characteristics of Concrete Due To The Effect of Coconut Fiber Addition on Normal Concrete Darwis, Zulmahdi; Baehaki, Baehaki; Soelarso, Soelarso; Fathonah, Woelandari; Rahma, Midia; Ramadhan, Malik Agung
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.v14i1.32200

Abstract

Concrete has high compressive strength, long durability, and easy maintenance. Innovation in using waste such as coconut fibers can improve the mechanical quality of concrete, reduce pollution, and provide added economic value. Fiber concrete is commonly used on broad structural elements to overcome expansion shrinkage due to oxidation, temperature, and evaporation. This study aims to determine the effect of the addition of coconut fiber waste and the optimum percentage on the bending strength characteristics of concrete. This research method is an experiment that compares the results of the bending strength test with the consideration of deflection that occurs on the force received from the variation of coconut fibers as much as 0%, 1.75%, 2.25%, and 2.75% of the weight of cement with a coconut fiber length of 65 mm, a planned quality of f'c 20 MPa, and using test specimens measuring 15 cm x 30 cm for cylinders and 15 cm x 15 cm x 60 cm for beams. Based on analysis and discussion, the addition of coconut fibers influences increasing flexural strength for a certain percentage with the addition of coconut fibers as much as 2.25% of the weight of cement showing the best flexural strength value with less deflection produced than other variations of fiber concrete at the same amount of force when charged.
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: 10.62870/fondasi.v13i2.32711

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.
Analysis of Flood Discharge at Catchment Area of West Jurang Mangu Reservoir using HEC-HMS Purnaditya, Ngakan Putu; Jannah, Dahlia Raudothul; Subekti, Subekti; Priyambodho, Bambang Adhi; Wigati, Restu
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.v14i1.32274

Abstract

High rainfall in Indonesia is one of the causes of flooding, especially in vulnerable areas such as watersheds. In addition to high rainfall, an increase in population and land use that is not in accordance with its function can worsen watershed conditions and cause an increase in flood risk. South Tangerang City is one of the areas prone to flooding, so flood control efforts are carried out such as widening rivers, raising embankments, and building retention ponds. Around the catchment area of the West Jurang Mangu Reservoir, flooding with a height of 50 60 cm still occurs, so further research was carried out at that location. In this study, the research method used QGIS to determine the catchment area, followed by hydrological analysis of the planned flood discharge using the HSS Synder method and modeling with HEC-HMS software. The results showed that the planned flood discharge using HSS Synder at return periods of 2, 5, 10, 25, and 50 years was 2.55 m3/s; 3.599 m3/s; 4.261 m3/s; 5.033 m3/s; and 5.718 m3/s.

Page 31 of 31 | Total Record : 303

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