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ANALISIS PENJADWALAN PROYEK KLINIK SPESIALIS MATA & THT AYANI DENGAN PERT & CPM FAIZAL ADDIN ACHMAD; YONAS PRIMA ARGA RUMBYARSO
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 01 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - JANUARY-APRIL 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

Clinics are one of the health facilities that are important for people's lives, for this reason the provision of health facilities is a priority scale where the construction of the Ayani Eye & ENT Specialist Clinic building in Pontianak City, West Kalimantan is one of them. Project scheduling is one of the elements of planning results, which can provide information about the planned schedule, project progress, & project delays, these things can affect the quality & quantity of work if correct implementation is not anticipated, both in terms of implementation methods, coordination between the owner and the contractor. . In this research, Time Scheduling analysis was carried out using PERT (Project Evaluation and Review Technique) & CPM (Critical Path Method) on the Ayani eye & ENT specialist clinic building project to determine the critical path and determine the probability that project work can be completed on time. Based on the analysis carried out, the critical path obtained is with the following details, A-B-C-D-E-H-Y-P-AG-AK-AN-AM-AO with a duration of 189 which is obtained from the results of calculations using the CPM method and probability using PERT calculations, namely that it can be completed in 189 with a percentage of 62% of the completion targets that have been made
ANALYSIS OF LIGHTWEIGHT BRICK WASTE FOR PARTIAL SUBSTITUTION OF FINE AGGREGATE ON CONCRETE COMPRESSIVE STRENGTH IHSAN TAQWA; YONAS PRIMA ARGA RUMBYARSO; LYDIA DARMIYANTI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

The construction industry in Indonesia is experiencing a significant increase, fueled by government infrastructure development. Concrete is the material of choice as it is easy to use, economical and strong. However, excessive sand mining has a negative impact on the environment, including land degradation and pollution. The increase in construction has led to an increase in construction waste, which, if managed properly, can be profitable. Effective waste management is crucial to address environmental concerns and the utilization of waste lightweight bricks offers a cost-effective and efficient solution. Studies related to the use of waste lightweight bricks as a partial replacement for sand in concrete are highly relevant. The results of compressive strength testing on normal concrete at the age of 28 days obtained based on data analysis and discussion that has been presented in the previous chapter regarding the use of waste lightweight brick powder fibers with variations of 0%, 5%, and 10% are 439 kN (f´c 24.85 Mpa), while variation 1 of 10% lightweight brick powder waste reaches 344 kN (f´c 19.48 Mpa), and variation 2 of 15% lightweight brick powder waste reaches 308 kN (f´c 17.44 Mpa).
THE EFFECT OF GRANITE WASTE AS A FINE AGGREGATE SUBSTITUTION IN ASPHALT CONCRETE BINDER COURSE NIKO FITRIANDANA RINJOKO; YONAS PRIMA ARGA RUMBYARSO; LYDIA DARMIYANTI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

Roads play a crucial role in local economies, supporting the distribution of goods and the mobility of citizens, but are often damaged by heavy traffic loads, poor drainage and inadequate infrastructure. Asphalt pavement is a popular choice due to its durability and affordable construction costs. Building waste includes construction and demolition waste, containing recyclable to toxic materials. Management of this waste is effective to reduce costs and support industry sustainability, in Indonesia, granite stone waste is widely generated. Analysis of Marshall characteristics in AC-WC mixtures using granite stone powder as a substitute for filler with a variation of 30% resulted in a stability value of 2487 kg, a VMA value of 36.51%, a flow value of 3.35 mm, a VIM value of 26.19% and an MQ value of 742 kg/mm that meets specifications. The VFB test value of 28.27% does not meet the 2018 Bina Marga specifications. While the granite stone powder with a variation of 60% produces a stability value of 2568 kg, a VMA value of 37.31%, a flow value of 3.4 mm, a VIM value of 27.12% and an MQ value of 756 kg/mm that meets the specifications. Meanwhile, the VFB test value of 27.31% does not meet the 2018 Bina Marga specifications. The presentation results of the mix design on cement filler are hot bin I by 17%, hot bin II by 45%, hot bin III by 32%, cement filler 6%, asphalt 6%.
THE EFFECT OF FISH BONE POWDER WASTE AS A FINE AGGREGATE SUBSTITUTION IN ASPHALT CONCRETE WEARING COURSE PAVEMENT TIAR WAHYUDI; YONAS PRIMA ARGA RUMBYARSO; BERMANDO MANGATUR SIAGIAN
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

Roads as transportation infrastructure play an important role in regional development and are used to transport basic necessities. Certain materials with specific durability are used for road construction, but damage can occur due to natural phenomena, excessive pressure, or material quality. This damage can endanger drivers and often causes accidents. The Bina Marga Road Maintenance Manual lists various types of damage, but this study only focuses on inspections to detect cracks. In Muara Angke, Central Jakarta, one ton of fish bone waste is produced every month from the fish cracker making process. This waste, which produces an unpleasant odor and contains BOD, COD, and TSS, pollutes the environment and makes the 400 m² industrial area unhealthy. Due to lack of skills and technology, local communities have not been able to process or utilize this fish bone waste effectively. The results of Marshall testing on the composition of AC-WC asphalt using fish bone powder waste with variations of fine aggregate substitution of 0%, 25%, and 50%, and asphalt content of 5%, 6%, and 7% did not meet the 2018 Bina Marga specifications for Stability, Void in Air, Marshall Quotient, and Void in Material values. The Marshall characteristics obtained from the mixture with fish bone powder waste are not comparable to the regular AC-WC mixture without waste. In addition, the VIM value for the mixture with 6% asphalt content and waste variations of 0%, 25%, and 50% also did not meet Bina Marga standards. However, all VMA and VFA levels still meet the asphalt and aggregate specification criteria according to Bina Marga 2018.
ANALYSIS OF FLEXURAL STRENGTH OF BEAM USING BAMBOO REINFORCEMENT FITRA RAHARJA ASHSHIDDIQ; YONAS PRIMA ARGA RUMBYARSO; BERMANDO M SIAGIAN
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

Concrete is the main material in building construction made from a mixture of gravel, sand, cement, and water. This material is the most commonly used in construction. The development of concrete technology brings various innovations to improve its quality, including the addition of additional materials or substitutes such as bamboo reinforcement. Bamboo reinforcement is an alternative because of its abundant availability, easy to obtain, and economical price, thus offering a more affordable construction solution. Research has explored the use of bamboo as a substitute for steel reinforcement, considering that bamboo has a strong mechanical structure. In Indonesia, Petung, wulung, tali, and Ori bamboo are the most commonly used types. Concrete design standards and compressive strength testing are regulated by SNI, with the quality of concrete tested according to SNI 1974-2011 and the increase in concrete flexural strength measured based on SNI 4431-2011. Bamboo reinforced beams at the age of 7 days reached 25 KN, at the age of 14 days reached 28 KN and at the age of 28 days reached 29 KN. Where it can be concluded that the compressive strength of concrete increases at the age of 7 to 28 days. The bagasse reinforced beam at the age of 7 days reached 20 KN, at the age of 14 days reached 23 KN and at the age of 28 days reached 24 KN. Where it can be concluded that the compressive strength of concrete increased at the age of 7 to 28 days but the results at the age of 28 days did not reach 100%. The iron reinforced beam at the age of 7 days reached 26 KN, at the age of 14 days reached 30 KN and at the age of 28 days reached 33 KN. Where it can be concluded that the compressive strength of concrete increased at the age of 7 to 28 days. Based on the results of the study, it was found that the beam with the addition of bamboo and iron reinforcement experienced an increase in the percentage of flexural strength testing while the beam reinforced with bagasse at the age of 28 days did not reach the desired target.
ANALYSIS OF CONCRETE COMPRESSIVE STRENGTH WITH PARTIAL SUBSTITUTION OF IRON POWDER WASTE AS FINE AGGREGATE DELLA GIOVANNI; YONAS PRIMA ARGA RUMBYARSO; BERMANDO SIAGIAN
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

This study evaluates the use of iron powder waste as a partial replacement of fine aggregate in concrete to reduce environmental impacts. By testing various percentages of iron powder (0%, 7.5%, and 12.5%), this study analyzed the compressive strength of concrete at the ages of 7, 14, and 28 days. The results showed that the addition of iron powder tended to reduce the compressive strength of concrete compared to normal concrete. Concrete with 7.5% iron powder had better compressive strength compared to 12.5%, but both had not reached the expected compressive strength. Further research is needed to find the optimal combination of iron powder and other additional materials.
ANALYSIS OF CONCRETE COMPRESSIVE STRENGTH WITH COCONUT FIBER WASTE AS A PARTIAL REPLACEMENT OF FINE AGGREGATE ISMAIL; YONAS PRIMA ARGA RUMBYARSO; GALI PRIBADI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

Although concrete is less strong in resisting tensile loads, the addition of fibers makes it a more resilient construction material, especially fiber concrete which is abrasion resistant and has better tensile, flexural and compressive strengths. In Indonesia, coconut fibers, which have been used since prehistory as a building material, are now being utilized as an additive in cement, thanks to their advantages in absorbing water and having good tensile strength. The use of coconut fibers not only increases the flexibility and strength of concrete, but also utilizes household waste that is difficult to recycle to create high-quality construction materials that are more durable and less prone to cracking. The results of testing the compressive strength of normal concrete at 28 days showed that without coconut fiber waste, the compressive strength was 440 kN (f´c 24.91 Mpa). With the addition of 5% coconut fibers, the compressive strength dropped to 318 kN (f´c 18 Mpa), and with 10% coconut fibers, to 292 kN (f´c 16.53 Mpa), showing the effect of fibers on the mechanical properties of concrete.
Analisis Kinerja Struktur Gedung Rusun TNI AU Halim Perdanakusuma Dengan Menggunakan Metode Pushover Analysis Prima, Yonas; Lydia Darmiyanti
Jurnal Sipil Krisna Vol 9 No 2 (2023): Jurnal Sipil Krisna
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v9i2.418

Abstract

At this time, planning for earthquake-resistant multi-storey buildings in Indonesia is important because Indonesia is in a very active tectonic zone, a position caused by the meeting of the 3 large plates and 9 small plates of the world & forming complex plates meeting paths, this makes Indonesia a countries vulnerable to earthquakes. One method of analytical approach for the performance of earthquake-resistant reinforced concrete structures is push load analysis which is used to reveal the performance of building structures during an earthquake by presenting them using performance levels according to regulations, so this planning is usually called performance-based earthquake resistant planning. The performance level will indicate the collapse behavior of the building during an earthquake according to existing conditions. Pushover analysis & performance evaluation on vertical and horizontal elements is assisted by ETABS software. The results of the pushover analysis show that the performance point of the rusun TNI AU Halim Perdanakusuma building for loading in the X-direction is 440.471 mm with a shear force of 38363.2261 kN, while for the Y-direction the performance point obtained is 457.276 mm with a shear force of 55150.5802 kN. From the performance point, the structural drift resulting from loading in the X-direction and Y-direction is 0.824% & 0.855%, so the structure's performance level is based on the drift limits required by FEMA 356 and ATC-40 including the direct occupancy level. Based on the capacity curve, the maximum base shear force obtained is 46734.5513 kN & the resulting displacement in the X- direction is 710.310 mm & while in the Y-direction, the maximum base shear force obtained is 76055.6401 kN & the resulting displacement is 904.504 mm.
Analisis Pengaruh Penggunaan Limbah Cangkang Siput Pada Campuran Asphalt Concrete-Wearing Course (AC-WC) Saifulloh, Reza; Rumbyarso, Yonas Prima Arga; S, Sukadi
Madani: Jurnal Ilmiah Multidisiplin Vol 2, No 8 (2024): Vol. 2, No. 8, 2024
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.13268773

Abstract

Material that passes through No. 200 is used as a filler for asphalt concrete mixtures. The filler material used in this research is snail shells or mollusk shells which are often found in coastal waters. Because snail shell ash contains chitin (C8H13O5N) and lime (CaCO3), its characteristics are comparable to other fillers. The purpose of the filler is to make the asphalt thicker and less sensitive to temperature. The characteristics of the asphalt mixture can be influenced by the filler used in the Laston mixture. Excessive amounts of filler will cause the mixture to become stiff and crack easily. On the other hand, the mixture can become too soft if the filler level is too low. This research uses an experimental design at the Asphalt Laboratory, Faculty of Engineering, Krisnadwipayana University. Snail shell fillers of 0%, 15% and 30% were applied at different levels. The aim of this research is to determine the effect of Marshall characteristics on changes in the amount of snail shell waste used as a filler in the asphalt concrete layer mixture in the Asphalt Concrete-Wearing Course (AC-WC) layer. The research results show the highest value for optimum asphalt with stability of 2208 kg, flow 5 mm, VIM 33.6%, VMA 42.38%, VFA 99.8%, and Marshall Quotient 458 kg/mm, which meets the 2018 Bina Marga specifications.
Analysis of Landslide Handling With Mini Pile Reinforcement Using Plaxis Software on The “X” Toll Road Project Yonas Prima Arga Rumbyarso; Gali Pribadi
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 2 (2024): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i2.27026

Abstract

The Semarang-Demak Toll Road faces geotechnical problems due to geological conditions that include hilly areas and basins, with bedrock such as claystone, shale, and lignite that are prone to weakening. A landslide occurred at the Semarang-Demak Toll Road site between Sta. 1+250 and Sta. 2+715, despite various methods of embankment work that were not entirely successful, therefore causing damage. The analysis showed a discrepancy between the theoretical factor of safety and the actual landslide condition, requiring slope reinforcement technology such as mini piles that effectively inhibit soil movement. Mini piles, in the form of reinforced concrete with a length of 7 to 10 meters and a spacing of 2 meters between piles, plus the use of geotextiles, analyzed using the Plaxis 2D program showed an increase in the factor of safety. Although there were slight differences between the reinforcement models, the combination of mini piles and geotextiles proved effective, especially when placed in hard soil layers or over soft soil at a depth of 7 meters from the surface, overcoming the embankment loads at the site.