Evaluasi Proyek Pembangunan Gedung Stroke Center (Paviliun Flamboyan) Menggunakan Metode Critical Path Method (CPM) Dan Crashing

Abstrak Kegiatan pembangunan proyek konstruksi sering terjadi keterlambatan. Pelaksanaan proyek konstruksi dibatasi oleh waktu dengan rencana biaya yang sudah ditentukan dalam perencanaan. Pengendalian yang tepat dapat mengurangi risiko terjadinya keterlambatan serta pembengkakan biaya. Salah satu proyek yang mengalami keterlambatan adalah pembangunan Gedung Stroke Center (Paviliun Flamboyan) RSUD Jombang. Faktor yang menjadi penyebab yaitu: (1) kurangnya kesiapan alat yang digunakan untuk mengakses ke tempat pembangunan, (2) posisi struktur tidak sesuai dengan perencanaan sehingga terjadi pembongkaran dan pengecoran ulang, (3) jalur mobilitas traffic alat berat yang sulit untuk mengakses ke tempat pembangunan sehingga berdampak terhadap pelaksanaan. Tujuan penelitian ini adalah (1) memperoleh informasi waktu pekerjaan pelaksanaan (2) mengetahui perbandingan biaya dan waktu adanya percepatan waktu pelaksanaan proyek. Metode yang dipakai adalah metode CPM (Critical Path Method) yang digunakan untuk menganalisis lintasan kritis yang fokus pada pekerjaan struktur beton dan menggunakan metode Crashing untuk mengetahui perbandingan biaya dan waktu akibat adanya percepatan (crashing). Hasil analisa pada penelitian ini diperoleh durasi pelaksanaan pekerjaan bangunan proyek secara normal. Dari analisa dengan alternatif penambahan tenaga kerja dan jam kerja (lembur) yaitu lebih hemat menggunakan alternatif jam kerja lembur dengan perbandingan sebesar 0.010%. Kata Kunci: Critical Path Method (CPM), Crashing, Waktu, Biaya.

Perbaikan Lintasan Produksi untuk Meningkatkan Efisiensi dengan Menghilangkan Bottleneck dan Penyeimbangan Lintasan pada Divisi Sewing

Penelitian ini bertujuan untuk mendapatkan lintasan produksi pada divisi sewing yang seimbang dan efisien. Perbaikan lintasan tersebut dilakukan dengan menghilangkan bottleneck dan melakukan penyeimbangan lintasan. Metode studi gerakan Methods Time Measurement(MTM) digunakan untuk mengurai operasi yang menjadi bottleneck menjadi beberapa operasi. Untuk penyeimbangan lintasan digunakan lima metode heuristik yaitu Metode Bobot Posisi, Metode Pembebanan Berurut, Metode Wilayah, Metode Yamagumi Chart dan Metode Critical Path Method (CPM). Lintasan produksi yang dihasilkan dari kelima model tersebut kemudian dipilih yang memiliki efisiensi terbesar. Hasil penelitian memperlihatkan bahwa ada empat operasi yang menjadi bottleneck, kemudian setelah dilakukan studi gerakan dengan metode MTM diurai menjadi sepuluh operasi. Semula jumlah operasi pada lintasan produksi divisi sewing ada 20 operasi menjadi 26 operasi. Hasil penyeimbangan lintasan metode penyeimbangan lintasan paling baik adalah Metode Pembebanan Berurut yang menghasilkan jumlah stasiun terkecil dengan rata-rata efisiensi paling tinggi, yaitu 20 stasiun kerja dengan efisiensi 80%. Stasiun kerja hasil penyeimbangan lintasan, setelah diuji coba dengan menggunakan simulasi komputer, dapat mengefisiensikan proses di divisi sewing dengan menyelesaikan target produksi harian lebih cepat daripada lintasan produksi awal.

The Analysis of Delayed Duration Caused by Unpredictable Factors in Pammukkulu Dam

This study aims is to find the critical path which caused delay on the projects. Several factors which may affect to the delay are the weather, the lack of manpower, supply chain, equipment and so on. The research methodology was conducted to elaborate the causes are by using qualitative and quantitative researches. Over 35 respondents and 10 expert’s interviewee fill the questioner and were collected within two months. The result obtained is accelerated 3 paths from critical path method (CPM) then calculated the crashing program for each alternative. The alternative of acceleration applied are add the working hours in 4 (four) hours and 7 (seven) hours. In the end, the addition of 4 (four) hours could increase the workforce up to 25% of the total number of workers to get the value of accelerated finishing projects without ignoring the quality and quantity of them. Also, the additional labour is more beneficial in terms of costs they have relativity small number of working hours and would be more efficient.

Optimalisasi Penjadwalan Proyek Pembangunan Gedung Puskesmas Badas Menggunakan Critical Path Method-Project Evaluation and Review Technique (CPM-PERT)

Lack of project scheduling planning and ineffective control make the activity of a project less efficient. This will have an impact on the success of the project. This situation will result in delays and a decrease in the quality of work due to time constraints. Scheduling is important for determining the required activities and arranging a sequence and time frame to complete project activities on time. This study aims to optimize the scheduling of a moderate light rehabilitation project in the Badas Community Health Center building, Kediri Regency, where project start-ups are experiencing delays. The method used is Critical Path Method-Project Evaluation and Review Technique (CPM-PERT), which is a method to determine the duration of a project that can be completed and the percentage of its success. The analysis carried out includes calculation the duration desired acceleration and cost slope. Analysis results using CPM-PERT obtained critical path in: preparation activities (A), earthworks (B), structural work (D), 1st floor work (E), 2nd floor work (F), 3rd floor work (G), roof, ceiling and plank work (H), iron work (I), electrical work (L), floor and wall covering work (M) and finishing work (N). The normal duration of project completion is 140 days and costs Rp. 1,818,182,709, whereas with the CPM-PERT method the duration can be accelerated to 128 days (probability 99.99%) and required additional fee 8.1% or worth Rp. 146,719,664. Implementers can use it in optimizing scheduling and financing on the badas public health center building construction project.

Application Of CPM Methode (Critical Path Methode) In Controlling The Time 100 Teus Contrainer Ship Hull Construction Project

Construction projects are generally the most high-risk businesses, especially shipbuilding projects. Efforts to reduce the risk can be done by minimizing the potential risk. This study aims to see potential high risk and prevent delays in the completion of ship construction using the Critical Path Method CPM at PT. XYZ. By using the Critical Path Method CPM critical paths can be given more attention so that they will not interfere ship construction projects. In addition, it is also a form of anticipation if there is a delay, it is possible to reschedule.

On Determining the Critical Path of Activity Network with Normalized Heptagonal Fuzzy Data

In this research work, an approach to determine the critical path of activity network with normalized heptagonal fuzzy data is proposed. In the proposed model, we attempt to develop a method for solving litigation problems by experts when they share the same information but differ in their opinions. The concepts for a critical path method (CPM) optimization with two kinds of data are as follows: those are to be optimistic and those considered being pessimistic. A numerical example is given for the illustration of the proposed approach and gain more insights. Based on the findings of the proposed work, we observe that the floating times with optimistic data are always smaller than or equal to the corresponding floating times for the pessimistic data.

The Automation of Critical Path Method using Machine Learning: A Conceptual Study

This research aims to shed light on the use of machine learning in improving, developing and automating the critical path method, solving its problems, studying this effect and its dimensions, and discussing that from many aspects. The research is divided into two theoretical and practical parts. The theoretical part is concerned with studying the critical path method and its advantages, problems and challenges, as well as studying machine learning and artificial intelligence and its dimensions, reviewing materials and sources related to this, and then presenting suggestions and future solutions based on this study. As for the practical section, it is a questionnaire that targeted a segment of engineers, in particular, and others who have sufficient experience in both the critical path method and machine learning, and seeking their opinions on both topics. The result of the theoretical research was 14 theories or proposals that were presented based on the foregoing study. As for the practical questionnaire, a sample of 127 was taken. Through statistical analysis, the results were analyzed and discussed separately, and then a conclusion was drawn regarding them.

An Uncompleted Federal Government Infrastructure (Project): An Anathema to Economic Diversification

Infrastructure development is the hub of economic diversification, for any nation to grow economically; it must be seriously dependent on its iron and steel development. The construction of the Ajaokuta iron and steel industry can be dated and traced to the year 1979 and as of 1994, the project was near completion with 98% of the project almost completed. As of 2018, the project is yet to be completed. The gap between 1979 through 1994 to 2018 gives the Nation a whole cause to worry thereby implying whether the delay in the work is due to the incompetency of the contractors in question or is it due to bad governance and suspected looting. This paper, therefore, applies the use of the popular Critical Path Method (CPM) in monitoring the progress of the yet-to-be-completed Ajaokuta project focusing on its possible network diagram, earliest and latest time of completion.