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Maelissa, Nelda
Politeknik Negeri Ambon
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ANALISA PERBANDINGAN WAKTU PENJADWALAN PROYEK DENGAN METODE CPM (CRITICAL PATH METHOD) DAN PDM (PRECEDENCE DIAGRAM METHOD) (Studi Kasus : Rehabilitasi dan Renovasi Sarana Prasarana SD Negeri Waemasing, Kec. Waesama, Kab. Buru Selatan) Gabriel C. A. Lesbasa; Meyke Marantika; Nelda Maelissa; Rudi Serang
Journal Agregate Vol. 1 No. 1 (2022): September
Publisher : Jurusan Teknik Sipil

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Abstract

Project delays are a highly unenviable condition. A school project in Waesama Sub-district, Buru Selatan Regency was delayed where 208 days of planning were not achieved, and were realized more than the plan. This study aims to distinguish the duration of the project using CPM and PDM on the project, as well as determine the optimal duration between the two methods. As well as obtaining critical jobs for CPM and PDM. CPM (Critical Path Method) is an AON (Activity on Node) method that only has one constrain, namely FS (Finish to Start). While PDM (Precedence Diagram Method) is an AON (Activity on Node) method that has 4 constrains FS (Finish to Start), SS (Start to Start), SF (Start to Finish), FF (Finish to Finish). The results of this comparative study found that there were differences in activities that were critical, there were also differences in duration after the use of these two methods. Where CPM produces a duration of 203 days, while PDM produces the most optimal duration of 200 days because it saves 8 days more than the duration of project planning. The use of PDM methods were more effective.
PENERAPAN METODE NILAI HASIL PADA PROYEK PEMBANGUNAN GEDUNG PELAYANAN BPKB DIT LANTAS POLDA MALUKU Julia Dewi Leatemia; Lenora Leuhery; Nelda Maelissa
Journal Agregate Vol. 1 No. 1 (2022): September
Publisher : Jurusan Teknik Sipil

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Abstract

The construction of the BPKB Service Building of the Maluku Police Traffic Directorate is planned to be completed in 150 calendar days. But in fact the project experienced addendum 1 on November 2, 2020 because at the time of the field inspection the size of the plan drawing did not match the size in the field, so this project experienced a delay of 27.895%. So that delays in project implementation do not recur, the author's goal is to find out cost and time deviations using the result value method. This method uses basic assumptions to make forecasts so that you have enough time to think about how to deal with problems in the future. Data collection techniques carried out are site surveys, observations, and literature. There are two types of variables, namely the independent variable is time and the dependent variable is cost. The data analysis technique used the result value method. The results of the analysis at week 28 of the cost performance index (CPI) < 1 which means the actual costs (ACWP) incurred are greater than the planned work costs (BCWP) so that the project experiences a cost deviation of Rp. 106,014.970.36 from the value a contract of Rp. 21,701,579,200.00 with a percentage of 0.49% and a time performance index (SPI) < 1 which means the project performance is slower than the planned schedule so that the project experiences time deviations for 200 working days with a weight of 6.5845% from the planning schedule 150 working days. Keywords : Earned Value Method, Schedule Performance Index (SPI), Cost Performance Index (CPI)
Analisis Risiko dengan Menggunakan Metode Domino pada Rehabilitasi dan Renovasi Perpustakaan dan Laboratorium IAIN Ambon Febri Linda Keliola; Nelda Maelissa; Maslan Abdin
Journal Agregate Vol. 1 No. 1 (2022): September
Publisher : Jurusan Teknik Sipil

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Abstract

Construction work can cause Work Accident Risk, therefore the implementation of construction work is required to implement an occupational safety and health (K3) management system at the work site. However, the IAIN Ambon Library and Laboratory Rehabilitation and Renovation project was not implemented. So this study aims to obtain the Dominant Occupational Accident Risk, the causal factors and how to respond to these causal factors. The method used in this study is a semi-quantitative analysis method combined with the domino method. Semi Quantitative Analysis in the form of distributing questionnaires containing a scale of 'likelihood' and 'consequency' values and processed with SPSS, then analyzed with a Risk Matrix while the domino method is used to identify factors causing work accidents. The results obtained: 1. There are 8 Dominant risks (1) Workers are exposed to noise from iron cutting machines, (2) Workers' heads are exposed to wood impact during baking installation, (3) Workers' eyes are exposed to Splashing of Concrete Mixture, (4) Workers' breathing is disturbed due to ceramic cutting dust, (5) Workers are exposed to noise from ceramic cutting tools, (6) Workers' eyes are exposed to splashes from liquid paint, (7) Workers' breathing is disturbed due to ACP cutting dust, (8) Workers are exposed to noise from ACP cutting tools. 2. Factors causing work accidents (1)Lock of control/Management (2) Basic Cause of accident (3) Immediate cause/symptoms (4) Incident (5)Loss. 3.Response to factors causing work accidents, namely (1) Risk Reduction (2) Risk Transfer.
FAKTOR-FAKTOR PENYEBAB KETERLAMBATAN PROYEK RENOVASI DAN PERLUASAN GEDUNG BALAI KARANTINA IKAN AMBON Legion Kopong; Nelda Maelissa; Henriette Dorothy Titaley
Journal Agregate Vol. 2 No. 2 (2023): September
Publisher : Jurusan Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/ja.v2i2.1200

Abstract

Conatruction dealy is acommon problem Which frequently happens in construction industry. The purpose of this study was to indentity and categorize the delays causing factors greatly effecting the fish quarantine center building revavation and expansion project. The Fish quarantine center building renovation project was the object of this study motivated by delays. Futhermore, based on the secondary data obtained, time schedule is entirely used as the duration and normal cost of the project. Then, the Principal Compenent Analysis (PCA) method is applied to be able to find out the main factors causing dealys. Based on the results of the normality test and principal compenent analysis, the factors that effect the delay in the renovation and expansion of the Ambon Fish Quarantine Center Building were the material factors with a total variance of 57.575% including X1.1. Lack of construction materials, X1.2 Material changes in from, function, and specifications, X1.3 Delay in delivery of materials, X1.4 Damage to materials in storage, X1.5 Inccuracy of time.
ANALISA RISIKO PADA PROYEK PEMBANGUNAN GEDUNG AUDITORIUM IAIN KOTA AMBON Tisya Glorya Pelatta; Nelda Maelissa; Henriette Dorothy Titaley; Abraham Tuanakotta
Journal Agregate Vol. 2 No. 1 (2023): Maret
Publisher : Jurusan Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/ja.v2i1.1202

Abstract

Risk management is an effort to manage risk comprehensively, planned, and structured in a good system to prevent unexpected risks. It may allow the management to expand results by identifiying and analyzing the risk to work accident in the Auditorium building project in a IAIN Ambon. Each  risk in the work phase must be assessed risk professionally. The assessment method used a risk assessment matrix sourced from NHS Highland, which adopted from AS/NZS 1360:2004 Risk Management. Primary data were obtained from interviews and questionnaires.   Furthermore , secondary data were collected through the company’s organizational structure and project work items. In addition, data analysis was carried out through validity and realiability test, and finally, a risk assessment was implemented. The results of this study showed that there were five risk factors; injured/stabbed by risk level of 20 work accident risk variabels, there was obvioposly one medium risk inculuded in the category high risk and 19 other variables involved in the medium risk included in the category high and 19 other variebles invoveld in the medium risk category. In consclusion,strategiees that can be carried out to prevent the risk regaarding to the classification of risk levels, namely elimination, substitution, administation, and personal protecetive Equipment (PPE).
ANALISIS RISIKO PADA PROYEK PEMBANGUNAN GEDUNG LABORATORIUM TERPADU PENDUKUNG BLOK MASELA UNIVERSITAS PATTIMURA Nurhayati Maasily; Octovianus Jamlaay; Nelda Maelissa
Journal Agregate Vol. 2 No. 1 (2023): Maret
Publisher : Jurusan Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/ja.v2i1.1280

Abstract

Risk management is an effort to manage risk in a comprehensive, planned and structured manner in a good system to prevent unexpected events. It allows management to improve results by identifying and analyzing the risk of work accidents that exist, namely the construction project of Masela Block Supporting Integrated Laboratory, Pattimura University. Each risk of the work phase must be assessed for professional risk management/control. The assessment method applied a risk assessment matrix sourced from NHS Highland which was adopted from AS/NZS 1360:2004 Risk Management. The secondary data obtained for this study consists of the company's organizational structure and project work items. Primary data obtained from observations in the field that is obtained by conducting interviews and distributing questionnaires. The data analysis carried out in this study was a variable test, namely Validity Test and Reliability Test. The next step was the application of risk assessment. The result of this study was that there were 4 risk factors, namely human resources, equipment and work materials, work methods, and working environment. The classification of the risk level from the 29 variables of occupational accident risk, there were two work risks that were included in the high-risk category and the other 27 risks were included in the medium risk category. Based on known risks, a strategy that can be carried out is obtained, namely risk control based on the classification of risk levels, namely Elimination, Substitution, Administration, and Personal Protective Equipment.
Environmental factors influencing construction implementation from contractors’ perspective Maelissa, Nelda; Prihartanto, Eko; Ratnasari, Anisa
Environmental and Toxicology Management Vol. 3 No. 1 (2023): Environmental factors and their impacts
Publisher : Universitas Nahdlatul Ulama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33086/etm.v3i1.4145

Abstract

To achieve the project’s goal, both internal and external organization influencing factors (construction industry) should be aware, particularly at the construction implementation level. The objective of this research is to identify the environmental factors that influence construction implementation from the contractor’s perspective as the main actors in the implementation of construction. The methodology used in this research was library research and surveys using questionnaires as data instruments. The analytical method used is principal component analysis, supported by the SPSS program. Based on the analysis results of the environmental factors that influence the construction implementation level using principle component analysis, the total class produced 15 main components and was capable of explaining the various data with a cumulative percentage of 85.672%. From the study results, it can be concluded that the company resource factor was the most influential factor compared with other factors.
PELATIHAN TEKNIK PENYUSUNAN RAB BAGI PEKERJA DAN TUKANG DI NEGERI NAKU Gaspersz, Willem; Maelissa, Nelda; Latar, Sjafrudin
Mitra Akademia: Jurnal Pengabdian Masyarakat Vol 2 No 1 (2019): Mitra Akademia: Jurnal Pengabdian Masyarakat
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/mapnj.v2i1.1501

Abstract

Rencana Anggaran Biaya Merupakan suatu factor yang terpenting dalam pembangunan suatu pekerjaan konstruksi sehingga merupakan hal yang sangat diperlukan bagi para tukang dan pekerja untuk mengetahui berapa besar biaya yang di terimanya pada saat pekerjaan dikerjakan sehingga para tukang harus mengetahui berapa besar biaya yang harus diterimanya.  Pengabdian Kepada Masyarakat di Negeri Naku ini ditujukan kepada Tukang dan Pekerja karena awalnya Tukang dan Pekerja Menghitung biaya kerjanya atau estimasi biaya pekerja dengan melakukan perkiraan berdasarkan pengalaman kerja yang mereka lakukan sehingga terjadi ketidak cocokan harga dalam melakukan suatu penawaran biaya kerjanya. Dalam Pelatihan ini diberikan kepada Tukang dan Pekerja untuk mengetahui bagaimana teknik penyusunan Rencana Anggaran Biaya  sehingga penawaran biaya tukang kepada Pemilik Pekerjaan dapat diterima sesuai dengan biaya yang di sediakan oleh Pemilik Pekerjaan.       Kegiatan Pelatihan Teknik Penyusunan RAB berlangsung selama satu hari yakni padatanggal 13 Oktober 2018. Dalam Melaksanakan Pelatihan kepada Tukang dan Pekerja Tim Pengabdian menggunakan Gambar Bangunan Gedung Lantai 2, Daftar Upah dan Bahan Tahun 2017 Sebagai Dasar dari Perhitungan Analisa harga Satuan, dan Analisa harga Satuan Menggunakan Standar Nasional Indonesia 2008 sebagai dasar untuk Mengetahui Anggaran Biaya Bangunan tersebut. Juga diberikan tugas kepada tukang dan pekerja untuk mengetahui tingkat pemahaman penggunaan Analisa Harga Satuan oleh tukang dan pekerja. Dapat di simpulkan bahwa ternyata sebelum melakukan pelatihan tukang tidak memahami tentang cara penyusunan RAB sehingga menyulitkan untuk memberikan penawaran harga pekerjaan. Dan setelah mendapat pelatihan dari Tim Pengabdian, maka Tukang dan Pekerja tersebut sudah memahami dan dapat menghitung Rencana Anggaran Biaya dengan baik dan benar berdasarkan Standar Naional Indonesia 2008.
Monitoring and maintaining groundwater quality: challenges and management Zhu hang, Goh; Maelissa, Nelda; Zhang Zhan, Loh; Widiyanti, Atik; Umarie, Winda; Setiadi Soedjono, Eddy
Environmental and Toxicology Management Vol. 2 No. 2 (2022): Environmental flows and natural resources management
Publisher : Universitas Nahdlatul Ulama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (566.026 KB) | DOI: 10.33086/etm.v2i2.3408

Abstract

Water covers 70% of the world’s total surface, but only around 3% of it is freshwater that humans may drink and utilize for other purposes. Because of fast growth in many nations, the quality of groundwater is no longer adequate for human consumption. The objective of the study is to assess the groundwater quality of 18 locations in the Ropar wetland in Punjab, India, in different seasons and different source groundwater. When compared to uncontaminated natural groundwater, the groundwater obtained from the test sites had higher pH values. The amount of groundwater pollution is higher in the summer than in the winter. However, there are many challenges face by the groundwater quality research. The groundwater quality in any region of the world is very important towards the survival of human being. Long-term consumption of polluted groundwater with high levels of heavy metals will result in health issues such as difficulty breathing and renal failure.
Analysis of the influence of environmental factors on the delay in the construction of Maluku traffic office service building Sohilait, Matheos; Maelissa, Nelda; Nur Rokhim, Imam; Ahmad Bhat, Sartaj
Environmental and Toxicology Management Vol. 2 No. 3 (2022): Environmental assessment and its benefits
Publisher : Universitas Nahdlatul Ulama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33086/etm.v2i3.3555

Abstract

The objective of this study was to analyze the factor of COVID-19 and environmental factors that affect the delay of building construction. The construction of the BPKB Service Building for the Traffic Directorate of the Maluku Regional Police in T.A 2020 was a project that spends a very large budget with a planned time of 150 days. Building construction was delayed up to 4 weeks. This building construction experienced a delay of 27.895\% of the work that had to be done. The method used is principal component analysis, which is multivariate and transforms correlated original variables into new uncorrelated variables by reducing the number of these variables so that they have smaller dimensions but can explain most of the diversity of the original variables. The results of the analysis of 25 respondents and 3 variables, namely: building tents to anticipate rain, good and harmonious relationships to prevent unexpected things from happening, and checking the location before making soft drawings.
Co-Authors Abdin, Maslan Abraham Tuanakotta Ahmad Bhat, Sartaj Ahmad Nusi Ansye Nanlohy Atik Widiyanti Betaubun, Renny James Eddy Setiadi Soedjono, Eddy Eko Prihartanto, Eko Febri Linda Keliola Gabriel C. A. Lesbasa Gaspersz, Willem Godfried Lewakabessy Hendriette D. Titaley Hendriette Titaley Henriette Titaley Henriette Titaley, Henriette Hindri Febri Ana Sari Istia, Penina Istia, Penina T Jakob, Juvrianto Chrissunday Julia Dewi Leatemia Julius Mulyono Kopong, Legion Latar, Sjafrudin Legion Kopong Lenora Leuhery Metekohy, Selly Meyke Marantika Meyke Marantika Nony Soplanit Nur Rokhim, Imam Nurhayati Maasily Octovianus Jamlaay Penina Istia Penina T Istia Penina T. Istia Ratnasari, Anisa Renny James Betaubun Rudi Serang Selly Metekohy Sjafrudin Latar Sohilait, Matheos Soplanit, Nony Tisya Glorya Pelatta Titaley, ST., MT, Henriette Dorothy Umarie, Winda Willem Gaspersz Willem Gasperz Zhang Zhan, Loh Zhu Hang, Goh