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All Journal Jurnal Teknik Sipil Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Patria : Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas Bina Bangsa ETERNITAS Journal of Local Architecture and Civil Engineering
Christiani Chandra Manubulu
Program Studi Teknik Sipil Universitas Widya Mandira, Kupang
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Public Health Social Sciences Transportation Other

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ANALISA INDEKS BIAYA UNTUK PEKERJAAN BETON BERTULANG DENGAN MENGGUNAKAN METODE SNI 7394-2008 DAN LAPANGAN (Studi Kasus pada Proyek Pembangunan Asrama STIKES CHMK Tahap III) Messah, Yunita A.; Sina, Dantje A. T.; Manubulu, Christiani C.
Jurnal Teknik Sipil Vol 2, No 1 (2013): Jurnal Teknik Sipil
Publisher : Jurnal Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (430.801 KB)

Abstract

The index cost affect the amount of unit price construction work. Cost index used in the calculation analysis of unit price refers to the Standar Nasional Indonesia (SNI). SNI describe about the average labor productivity in Indonesia. Labor productivity are different depend on work experience, cultural origins, and the others. This study was conducted to know the costs index of labor in Kupang by took one of case study on STIKES CHMK Dormitory Construction Project in third Phased. Cost index of reinforced concrete in this project, obtained by doingreal observation for the total of labor and time required to complete each item of reinforced concrete, especially the workfrom column,beam and plate and it began from the work of iron, formwork, casting up to demolition formwork.Then the observationsresult were analyzed descriptively. Based on the analysis result, the amount of the cost index is 0.0208 foreman: 0.0377 the head of handyman: 0.09929 handyman: 0.2502 worker to install 1m2 formwork, 0.0044 foreman: 0.0177 the head of handyman: 0.0268 handyman : 0.0796 worker to work 10 kg iron, and 0.0340 foreman: 0.0272 the head of handyman: 0.1427 handyman: 1.1888 worker to make 1m3concrete. This index used in the analysis of the differentation of labor presentage based on SNI and field method and continued with the calculation of unit price for each work item which used SNI and field method.
Sistem Informasi Geografis Pemetaan Sungai dan Bangunan Utama pada Daerah Irigasi Kewenangan Provinsi di Pulau Timor Christiani Chandra Manubulu; Frederikus D. Ndouk
Patria : Jurnal Pengabdian Kepada Masyarakat Vol 2, No 1: Maret 2020
Publisher : Universitas Katolik Soegijapranata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/patria.v2i1.2587

Abstract

Water is one of the basic human needs for various daily needs. One source of water that is often used by the general public is river water. With proper utilization, river water can support the economic development of the surrounding community. The main priority for water use is for domestic use such as drinking water and household needs and also used for industrial, agricultural, plantation, livestock, fishery, and so on. Optimal use of rivers for irrigation areas must be supported by information related to river conditions and buildings in rivers. Therefore it is necessary to make a database related to river conditions and irrigation building conditions. One of the software used in making a river database in the Provincial Irrigation Authority on Timor Island is Quantum Geographic Information System (QGIS) because it is open-source software that does not require a license but provides ample room for users to add functions such as software other paid mapping.
PENYUSUNAN PETA ADMINISTRASI BERBASIS SISTEM INFORMASI GEOGRAFIS PADA DESA PENFUI TIMUR KECAMATAN KUPANG TENGAH KABUPATEN KUPANG PROVINSI NTT Manubulu, Christiani Chandra; Bela, Krisantos R.; M. F. Seran, Sri Santi L.; Amasan, Alfred Jejenus; Alfuara Tedu, Nomentius
Jurnal Abdimas Bina Bangsa Vol. 5 No. 2 (2024): Jurnal Abdimas Bina Bangsa
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/jabb.v5i2.1401

Abstract

In order to realize the Sustainable Development Goals (SDGs), the Ministry of Villages, Development of Disadvantaged Regions and Transmigration of the Republic of Indonesia (Kemendes PDTT) reduce the National SDGs to become Village SDGs. The Village SDGs are an integrated effort to realize the achievement of sustainable national development goals or national SDGs. With the intention that this goal can be planned and implemented well, naturally each village/district must prepare an activity plan in carrying out development, including the need for an initial study and inventory of the potential possessed by a village, and this can be done by presenting it in the form of a basic map. Knowing that East Penfui Village does not yet have a suitable regional boundary map, this service activity can produce a Geographic Information System-based village boundary map that is appropriate to the actual situation, so that it can be used by the village government or other parties if needed at any time
PENGARUH VARIASI TUMBUKAN PADA KADAR ASPAL OPTIMUM TERHADAP CAMPURAN LATASTON (HRS-BASE) DENGAN METODE MARSHALL TEST Ninu, Niccolo Yanthonius Adventus Agung; Bela, Krisantos Ria; Manubulu, Christiani Chandra
Eternitas: Jurnal Teknik Sipil Vol 4 No 1 (2024): ETERNITAS: Jurnal Teknik Sipil, Vol 4, No 1 Oktober 2024
Publisher : Program Studi Teknik Sipil Universitas Katolik Widya Mandira

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30822/eternitas.v4i1.3481

Abstract

Compaction is a crucial factor that affects the quality and performance of road pavements. This study evaluates the impact of varying compaction blows at the optimum asphalt content on Lataston (HRS-Base) mixtures using the Marshall Test method. The tested compaction variations are 2 x 40, 2 x 50, 2 x 60, and 2 x 70 blows. The results show that stability values increase from 841.19 kg at 2 x 40 blows to 1151.42 kg at 2 x 70 blows. Flow values decrease from 3.45 mm at 2 x 40 blows to 3.18 mm at 2 x 70 blows. The Marshall Quotient (MQ) increases from 243.85 kg/mm at 2 x 40 blows to 362.72 kg/mm at 2 x 70 blows. The Void in the Mineral Aggregate (VMA) decreases from 19.30% at 2 x 40 blows to 17.02% at 2 x 70 blows. The Void in Mix (VIM) also decreases from 5.22% at 2 x 40 blows to 2.54% at 2 x 70 blows. The Void Filled with Asphalt (VFA) increases from 72.94% at 2 x 40 blows to 85.10% at 2 x 70 blows. The density of the mixture increases from 2.271 gr/cm³ at 2 x 40 blows to 2.335 gr/cm³ at 2 x 70 blows. However, only the 2 x 50 blows variation meets all the parameters specified in Bina Marga 2018 Revision 2. The 2 x 40 blows compaction results in low MQ and high VIM, while the 2 x 60 and 2 x 70 blows compaction results in VIM below the minimum limit. These findings highlight the importance of balanced compaction to enhance road pavement quality.
KINERJA STRUKTUR PEDIATRIC & ICCU BUILDING OF GUIDO VALADARES NATIONAL HOSPITAL MENGGUNAKAN PUSHOVER ANALYSIS Oke, Matheus Putra Septian Seda; Hendrikus, Rani; Mooy, Merzy; Manubulu, Christiani Chandra; Bela, Krisantos Ria
Eternitas: Jurnal Teknik Sipil Vol 4 No 1 (2024): ETERNITAS: Jurnal Teknik Sipil, Vol 4, No 1 Oktober 2024
Publisher : Program Studi Teknik Sipil Universitas Katolik Widya Mandira

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30822/eternitas.v4i1.3997

Abstract

According to SNI 1726-2019, hospitals are in category IV building risk which has high factor importance for building planning against earthquakes. Therefore, an evaluation of buildings is needed which is not only affected by earthquakes but also the strength, stiffness, and ductility of the building itself. This study aims to produce the performance of the Guido Valadares National Pediatric Hospital and ICCU Building using pushover analysis. The results of the analysis show that there is a deviation failure caused by the presence of a ramp on one side of the building which results in greater stiffness on that side than on the other side of the building. A new structural system is applied on the lower side of the building with bracing reinforcement to create balance for the building. The new design results reveal better building structure performance and it is in accordance with applicable standards.
REDESAIN TEBAL PERKERASAN JALAN LENTUR MENGGUNAKAN METODE MANUAL DESAIN PERKERASAN JALAN 2017 (Studi Kasus Jalan Gor Flobamora-Jalan Kejora, Kota Kupang) Daru, Fridolin Delawati; Pedo, Krisantus Satrio Wibowo; Manubulu, Christiani Chandra
Eternitas: Jurnal Teknik Sipil Vol 4 No 1 (2024): ETERNITAS: Jurnal Teknik Sipil, Vol 4, No 1 Oktober 2024
Publisher : Program Studi Teknik Sipil Universitas Katolik Widya Mandira

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30822/eternitas.v4i1.4227

Abstract

The Gor Flobamora-Kejora Road section is one of the alternative routes connecting Oebufu and Tofa District. Damage that occurs on this route is a major factor in disrupting accessibility, comfort and safety. Inconsistencies in planning with construction and use of pavement often cause damage, so an evaluation is needed in determining actions to improve the quality of road service life. This study aims to assess the condition of the road pavement and redesign the pavement. The road condition assessment method uses the 1990 Bina Marga method and the Surface Distress Index (SDI) method, while to redesign the pavement using the 2017 Road Pavement Design Manual Method. The results of the analysis show that the highest SDI value is 115 with minor damage conditions, it is recommended for road rehabilitation, while the Bina Marga method shows the highest Priority Sequence value is 6, with recommendations for periodic maintenance. The dominant type of damage is potholes, with a percentage of damage of 31.56%. The proposed pavement redesign uses flexible pavement with a layer thickness of 4 cm AC WC, 6 cm AC BC, 8 cm AC Base, and 15 cm Class A LPA
Pengaruh Perbedaan Produksi Minimum antara Alat dan Tenaga Kerja terhadap Waktu Penyelesaian, Biaya Proyek, dan Keuntungan Angul, Aurelia Lete; Lulu, Laurensius; Bela, Krisantos Ria; Sianto, Paulus; Manubulu, Christiani Chandra; Usboko, Gregorius Paus
Local Engineering Vol. 3 No. 1 (2025): June
Publisher : CV. Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/lejlace.v3i1.155

Abstract

A project is a detailed series of activities within a limited timeframe aimed at achieving specific objectives. Resources such as manpower, equipment, materials, money, and time are crucial for project success. The research objective is to determine the impact of minimum production differences between equipment and labor on project completion time, costs, and profits. The completion time for the binder course work item, based on labor and equipment, is 0.83 days, with a minimum production used of 10,000 liters. Conversely, based on equipment's minimum production, the completion time is 0.47 days, with a minimum production used of 17,500 liters. This shows a difference in completion time of 0.35 days with a reduction of 0.43%. According to the Bill of Quantities (RAB) data, the project cost is lower compared to the project cost based on labor, equipment, and labor and equipment combined. The initial profit according to the Bill of Quantities data is Rp 337,328,068.10, and the profit based on minimum labor production is Rp 145,723,835.86, resulting in a profit decrease of -56.80%.
Shear Capacity on Corroded Fly Ash Reinforced Concrete Beam Using Galvanostatic Method Mooy, Merzy; Manubulu, Christiani Chandra; Bees, Azarya; Bela, Krisantos Ria
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 1 (2024): EDISI MARET 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i1.5577

Abstract

Corrosion can be triggered by a chemical reaction to the materials, establishing reinforced concrete's failure. For a long time, researchers have tried to find out how to prevent corrosion, a main structural construction issue. As a technology of waste material, fly ash has predominance, i.e., it is safer and greener than Portland cement. The finer size of fly ash can be an advantage in filling the concrete materials well. This research is about using fly ash as supplementary material on reinforced concrete beams and the galvanostatic method to accelerate corrosion. This research will compare the shear strength after corrosion of each normal beam and fly ash as a supplementary beam. A shear test of fly ash and a normal reinforced beam has been applied. Results showed that fly ash beams have 14% higher compressive strength and 3% higher shear strength with 14% smaller crack width than normal beams after corrosion. It also has a 3,5 times lower rate and 62% level of corrosion than normal beam
Co-Authors Alfuara Tedu, Nomentius Amasan, Alfred Jejenus Angul, Aurelia Lete Bees, Azarya Bela, Krisantos R. Dantje A. T. Sina Daru, Fridolin Delawati Frederikus D. Ndouk Hendrikus, Rani Krisantos Ria Bela Lulu, Laurensius M. F. Seran, Sri Santi L. Merzy Mooy Ninu, Niccolo Yanthonius Adventus Agung Oke, Matheus Putra Septian Seda Pedo, Krisantus Satrio Wibowo Sianto, Paulus Usboko, Gregorius Paus Yunita A. Messah