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ANALISIS WAKTU DAN BIAYA DENGAN METODE CRASHING, OVERLAPPING DAN GABUNGAN CRASHING OVERLAPPING: (STUDI KASUS PROYEK PEMBANGUNAN BENDUNGAN BENDO LANJUTAN DI KABUPATEN PONOROGO, PROVINSI JAWA TIMUR) Umar, Muh Alwi; Wibowo , Kartono; Mudiyono, Rachmat
Journal of Industrial Engineering & Management Research Vol. 2 No. 5 (2021): October 2021
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1106.666 KB) | DOI: 10.7777/jiemar.v2i5.190

Abstract

Pelaksanaan Proyek Pembangunan Bendungan Bendo Lanjutan Kab Ponorogo Jawa Timur direncanakan selesai dalam 750 hari kalender, namun pelaksanaan proyek tersebut mengalami keterlambatan, yang dapat berdampak besar terhadap waktu dan biaya pada proyek tersebut. Karena itu diperlukan analisis metode percepatan dengan pengurangan durasi proyek agar dapat mengejar prestasi yang tertinggal. Studi ini bertujuan untuk menganalisis waktu dan biaya proyek jika dilakukan percepatan (crashing) dengan penambahan jam kerja lembur, menganalisis waktu dan biaya proyek jika dilakukan metode tumpang tindih (overlapping), menganalisis waktu dan biaya proyek jika dilakukan metode gabungan antara percepatan (crashing) dan tumpang tindih (overlapping), yang terakhir bertujuan untuk mengkaji waktu dan biaya yang paling optimal dengan menggunakan alternatif crashing, overlapping dan gabungan antara crashing overlapping. Data yang dibutuhkan yaitu data sekunder berupa data time schedule dan laporan mingguan proyek, rencana anggaran biaya proyek, jumlah tenaga kerja setiap item pekerjaan. Analisis dilakukan untuk mengetahui waktu dan biaya akibat percepatan dengan penambahan jam kerja (crashing), overlapping dan gabungan crashing overlapping, selanjutnya dicari perbandingan waktu dan biaya yang optimum dari tiga alternative tersebut. Dari hasil tiga perhitungan dapat disimpulkan bahwa waktu dan biaya akibat percepatan yang optimum adalah metode gabungan crashing dan overlapping dengan penambahan jam kerja (lembur) selama 3 jam serta mengubah relationship dan lag didapat pengurangan biaya sebesar Rp 5.854.374.553 dari total biaya pekerjaan normal yang jumlahnya sebesar Rp 287.227.881.577 menjadi Rp 281.373.507.024 atau turun 2,038 % dari total biaya pekerjaan normal dengan pengurangan durasi pekerjaan waktu selama 271 hari dari waktu normal 750 hari menjadi 479 hari.
Analisa Kinerja Pengelolaan Persampahan Studi Kasus : Kota Nanga Bulik Kabupaten Lamandau Tu'uni Leluno; Soedarsono .; Kartono Wibowo
Prosiding Seminar Nasional Inovasi Dalam Pengembangan SmartCity Vol 1, No 1 (2017)
Publisher : Prosiding Seminar Nasional Inovasi Dalam Pengembangan SmartCity

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Abstract

ABSTRAK Masalah sampah sebagai hasil aktivitas manusia di daerah perkotaan memberikan tekanan yang besar terhadap lingkungan, terutama bila tidak sampai terangkut dan akhirnya terakumulasi ditempat-tempat terbuka maupun badan air. Untuk mengatasi berbagai permasalahan tersebut, sudah saatnya pemerintah daerah Kabupaten Lamandau merubah pola pikir yang lebih bernuansa lingkungan. Konsep kinerja pengelolaan infrastruktur persampahan yang tepat sudah waktunya diterapkan, yaitu dengan teknik operasional dan manajemen pengelolaan sampah, pemeliharaan dan kelengkapan infrastruktur persampahan sesuai dengan kebutuhan ideal dan ditunjang dengan kesadaran masyarakat.Studi ini bertujuan untuk mengetahui tingkat hubungan antara variabel berwujud, kehandalan, tanggap, jaminan, serta kepedulian terhadap kinerja pengelolaan persampahan dan mengetahui tingkat hubungan yang paling dominan antara variabel berwujud, kehandalan, tanggap, jaminan, serta kepedulian terhadap kinerja pengelolaan persampahan.Penelitian ini merupakan studi kasus dengan metode pendekatan yang digunakan adalah metode deskriptif. Populasi dalam penelitian ini adalah keseluruhan orang yang terlibat pada kegiatan pengelolaan sampah di Kota Nanga bulik atau seluruh masyarakat Kota Nanga Bulik yaitu sebesar 17.554 kepala keluarga dengan jumlah sampel yang digunakan adalah 100 responden. Analisis data menggunakan uji regresi berganda dengan bantuan program SPSS.Hasil penelitian menunjukkan variabel - variabel yang mempengaruhi kinerja pengelolaan sampah mulai dari yang berpengaruh dominan pertama sampai kelima yaitu variabel tanggap dengan nilai koefisien regresi sebesar 0,691 ; variabel berwujud dengan nilai koefisien regresi sebesar 0,320; variabel jaminan dengan nilai koefisien regresi sebesar 0,244; variabel kehandalan dengan nilai koefisien regresi sebesar 0,240; dan variabel kepedulian dengan nilai koefisien regresi sebesar 0,236.. Variabel berwujud, kehandalan, tanggap, jaminan dan kepedulian secara serentak berpengaruh signifikan terhadap kinerja pengelolaan sampah. Sedangkan variabel yang paling berpengaruh terhadap kinerja pengelolaan sampah adalah variabel tanggap dengan nilai koefisien regresi sebesar 0,691. Kata kunci: berwujud, kehandalan, tanggap, jaminan, kepedulian, kinerja pengelolaan sampah. 
PENGARUH JALAN LINGKAR LUAR TERHADAP PERKEMBANGAN WILAYAH DI KOTA PALANGKARAYA DI TINJAU DARI TATA GUNA TANAH Andri Yulianto; Pratikso .; Kartono Wibowo
Prosiding Seminar Nasional Inovasi Dalam Pengembangan SmartCity Vol 1, No 1 (2017)
Publisher : Prosiding Seminar Nasional Inovasi Dalam Pengembangan SmartCity

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Abstract

Perencanaan kota mempunyai tujuan untuk keselarasan sosial dan ekonomi bagi kepentingan publik dan pribadi. Perencanaan kota yang baik, mengalokasikan sumber daya lahan dengan efisien. Keterpaduan rencana pembangunan jalan lingkar luar terhadap tata guna lahan pada koridor penataan ruang Kota Palangka Raya dapat memberikan manfaat, terciptanya sistem transportasi dan jaringan infrastruktur sebagai prasyarat utama yang harus diperhatikan.Tujuan penelitian ini untuk Mengidentifikasi potensi, kendala dan pengembangan wilayah untuk mendorong perkembangan Kawasan Jalan lingkar luar ditinjau dari Tata Guna Tanah dan Merencanakan pengembangan Pemetaan lahan di Kawasan Jalan Lingkar luar dalam kaitannya dengan keberadaan jalan lintas selatan poros Kalimantan ditinjau dari Tata Guna tanah. Penelitian ini termasuk dalam kategori penelitian korelasional. Penelitian korelasional merupakan tipe penelitian dengan karakteristik masalah berupa hubungan korelasional antara dua variable atau lebih. Populasi dari penelitian ini adalah penduduk yang tinggal dan menetap di Kota Palangkaraya dengan jumlah populasi penduduk 252.102 jiwa dengan sampel sebanyak 100 responden. Analisis data yang digunakan yaitu analisis regresi dengan bantuan SPSS v.20.Berdasarkan hasil penelitian didapatkan hasil bahwa faktor-faktor wilayah yang mempengaruhi pembangunan jalan lingkar luar pada ruas jalan Simpang Runtu-Kujan adalah variabel fisik, sosial, ekonomi dan aksesibilitas. Besarnya nilai koefisien regresi masing-masing variable yaitu variabel fisik sebesar 0,127, variabel sosial sebesar 0,231, variabel ekonomi sebesar 0,325, dan variabel aksesibilitas sebesar 0,284.. Sedangkan variabel yang paling berpengaruh terhadap pembangunan jalan lingkar luar pada ruas jalan Simpang Runtu-Kujan adalah adalah variabel ekonomi dengan nilai koefisien regresi sebesar 0,325. Kata kunci: Pembangunan Jalan,Pengaruh fisik sosial ekonomi, Uji Statistik
Strategy of Natural Disaster Management of Rob In Tanjung Emas Port Area Based on Value Engineering Analysis and Stakeholder Expectations Prosis Setiyawan; Slamet Imam Wahyudi; Kartono Wibowo
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

Tanjung Emas Port was inaugurated by the government in 1985 and became the main entrance of export and import goods to and from Semarang. So many big companies are building their factories in this area. There is even an industrial estate called Tanjung Emas Processing Zone (TEPZ) which some companies enter in bonded zone. Yet this port faces an ever-present problem, namely rob coming from tidal water and also a continuous decline in soil surface. In order to protect the various port facilities, it is necessary to create a robust flood handling system that is economical, efficient and accurate. The aim of this research is to get the result of handling of inundation based on value engineering analysis and the best stakeholder expectation. Value engineering research approach is directed to the analysis of a function that is a way to get or know the functions that are not needed. The function is presented in the comparison of Cost and Worth. VE analysis in this study was conducted by comparing the handling of rob disasters between polder systems with road elevation. Analytical techniques used include information stage, functional analysis phase, creative phase, evaluation phase, development stage and presentation stage. Keywords: rob handling, value engineering, stakeholder expectations, Tanjung Emas port
Feasibility Study And Investment Analysis Of Mix Use Sentraland Semarang Soedarsono Soedarsono; Kartono Wibowo; Pramodya Pramodya
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

The construction of high-rise buildings is being done in urban areas, especially vertical buildings due to the low availability of land. The longer development of the building leads to more complex functions resulting from the fulfillment of needs for the surrounding community so that the development of the building that can accommodate all the needs of the community is the mix use building. Building with this combined function certainly has a more complex influence both in terms of economic and environmental. Required detailed economic calculations in order to obtain maximum results from the building, especially for investors who have invested for the construction of the building, for that needed a feasibility study and investment analysis. So before the project is carried out can be taken whether the project is feasible to do or not according to the results obtained calculations. The results of this study show that the feasibility study and investment analysis of mix use building that has been done can give a clear picture about the profit or loss of the project implementation for the owner who will invest or the building manager later. Keyword: Feasibility study, Investment analysis, Mix use building, Economic engineering
The Analysis Of Risk Management Of Projects With Lumpsum Contract System and Unit Price Contract System Using AHP Method (Case Study Of Contractors In Semarang City) Muhammad Taufik; Kartono Wibowo; Abdul Rochim
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

In the construction project implementation, the contract is a bond between the project owner as the service user and the implementer / contractor as the service provider. The contract outlines the forms of cooperation, whether technical, commercial, or legal in a clear and detailed way. A fair contract should balance the rights and obligations between the two parties. So both parties should look at the articles in the contract so that the things that pose risks can be avoided. In the project implementation, the usual contracts are Lumpsum contract and Unit Price contract. The method used is Analytic Hierarchy Process (AHP) Method. The analysis process begins by defining the problem, and creating a hierarchical structure. This hierarchy consists of 3 (three) levels of objectives (level I), criteria (level II), and alternative (level III). Based on the hierarchy and then compiled questionnaires, Questionnaires were distributed to 71 respondents consisting of contractors in Semarang. The data obtained are then tabulated, followed by pairing matrices, pairing comparisons, measuring priority weights for level II and level III, and checking for consistency. This means that projects with lumpsum contracts are at higher risk of losses compared to unit price contracts. The Based on the result of cost swelling risk analysis, we get the priority weight for lumpsum contract equal to ≥50% and contract unit price ≤50%. Keywords: Risk, Methank, Analytic Hierarchy Process (AHP).
Cost Allocation Model In Construction Projects Kartono Wibowo
International Conference on Coastal and Delta Areas Vol 1, No 2 (2015): the 2th International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

Cost estimation is an important element in the overall cost management project, It is used to plan and control the resources, such as materials, labor, and equipment. In this case, the construction management has function to ensure the implementation of the construction project properly in order to achieve the goals of the project. Project planning urgently needs a precise and accurate method in analyzing the allocation of the proportion cost of the resources planned. It must be implemented in the beginning before start of the construction, therefore it is necessary to conduct a detail study of the factors related to the financial of the composition of resources such as labor, materials, and tools. Previous researches on cost allocation of construction project resources were carried out; Hermiati, Zahraie, B. and Tavakolan, M., Lin, K., Heon Jun, D. and El-Rayes. K. Hermiati. (2007) conducted a study about Modeling and Analysis of the wages of labor in the construction projects with the research objects of infrastructure development projects (building). Zahraie, B. and Tavakolan, M. (2009) examined the Stochastic Time-Cost-Resource Utilization Optimization (TCRO) Using Nondominated Sorting Genetic Algorithm and Discrete Fuzzy Sets). Lin, K. (2011) has conducted research on Human Resource Allocation for Remote Project Construction. Heon Jun, D. and El-Rayes, K. (2011) conducted research on Multi-objective Optimization of Resource Leveling and Allocation during Construction Scheduling. Previous researches on resource variable of project construction carried out by Muzayanah, et al. Muzayanah, et al (2008) modeled the proportion of project construction resources. The conclusion was in the form of a mathematical model of the proportion of project resources, and the average use of construction project resources. The conclusion was mathematical proportion of project resources and the average of construction project resources in a simple building compared to non-simple building. The conclusion of the first year study was project construction cost that has four variables; Wibowo, et al (2014), consisted of the cost variable of human resources, building material, equipment, and others cost. The final conclusion of this study (Wibowo, et al, 2015) resulted in a statistical/ mathematical model and conceptual framework model of the decision making system on the cost allocation of construction project. Statistical/ Mathematical Model of Cost Allocation on Project Construction in general "Yn = Pn + Qn + Rn + Sn", which Yn shows the variable of Construction Costs. P Variable indicates the variable cost of Human Resources, Q shows Variable Cost of Building Materials, R shows the variable cost of equipment, and S indicates Other Costs Variable. Each of these variables is the model formula of Other Costs. The formulation of the model variables P, Q, R, and S depends on the value of Y.
ANALISIS RISIKO PADA PROYEK JALAN LINGKAR UTARA BREBES - TEGAL Nadya Shafira Salsabilla; Kartono Wibowo; Hermin Poedjiastoeti
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 26, No 1 (2021): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v26i1.2814

Abstract

Risk is a consequence of uncertain conditions. Risk will always exist in every construction project because basically a construction project is a unique, dynamic and risky activity. The purpose of this research is to analyze the risks in the construction project of the North Ring Road Brebes - Tegal and the purpose of this study is to identify risks, conduct risk level assessments and handle high risks that affect the project. This study uses two data, namely secondary data and primary data. Primary data, namely risk identification data, risk level data and risk response data. Secondary data, namely organizational structure data. The data that has been obtained are then analyzed using the Probability and Impact Matrix (PIM) method and followed by calculating the risk level value. Based on this value, the category and ranking of each risk is then determined. In the last stage, analysis of the handling of the highest risk is carried out. The results of the risk identification analysis of this study obtained 33 risks, then the results of the analysis using the Probability and Impact Matrix (PIM) method obtained 3 (three) high risks, namely incomplete design data, conflicts of interest with residents, inadequate project information (soil testing and reports survey). Ten risks fall into the moderate category and 20 other risks fall into the low category.
EVALUATION OF DEVELOPMENT EFFICIENCY OF BRIGJEND SUDIARTO BUSINESS TOWARDS MOSQUITOON ON SIMPANG MODELING Muhammad Teqi Wijaya; Kartono Wibowo
Pondasi Vol 23, No 1 (2018): JUNI 2018
Publisher : UNISSULA Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pondasi.v23i1.11206

Abstract

ABSTRACTThis research aims to examine the efficiency of Brigjend Soediarto fly over development towards the traffic jam in Pedurungan intersection. The approach conducted in this research is quantitative paradigm, with the quantitative method in the process of analysis. According to the analysis, the recent condition indicates high traffic flows density in each intersection. The level of service (LOS) in Brigjend Soediarto road is 1,421 in the F level. It is predicted that after the development of fly over, the level of service increasse into C with LOS = 0.579. Meanwhile, the LOS in Soekarno-Hatta road is 0.854 with the D level, and increases into B level with LOS = 0.226. While LOS Fatmawati road is 0.856 with the D level and increases into B with LOS=0.284. Before the development, the vehicle speed in Pedurungan intersection was 5.914 km/hour. After the development is is predicted that the vehice speed will be 49.885 km/hour. So that the average speed is 43.97 km/hour. Based on those analysis, the efficiency of the development of Brigjend Soediarto fly over is 76.28%. It can be concluded by the development of Brigjend Soediarto fly over, it is efficiently increasing the flow of traffic in Pedurungan intersection. Keywords : Brigjend Soediarto Fly Over, Pedurungan Intersection, Traffic Delay 
Analisis Perbandingan Produktivitas Alat Berat Sebelum dan Sesudah Dilakukan Crash Program Mukhamad Afif Salim; Kartono Wibowo; Agus B Siswanto
Jurnal Teknik Sipil Unaya Vol 8, No 2 (2022): Juli 2022
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v8i2.3003

Abstract

Proyek Pembangunan Bendungan Bendo merupakan salah satu proyek bendungan yang berada di Jawa Timur yang bertujuan untuk mencukupi kebutuhan air di Kabupaten Ponorogo dan sekitarnya serta untuk menjaga dan menjamin ketersediaan air sepanjang tahun. Salah satu pekerjaan dalam proyek ini adalah pekerjaan timbunan bendungan utama yang terdiri atas 5 zona yang memerlukan waktu cukup lama. Analisa perbandingan produktivitas alat berat dengan menggunakan crash program dilakukan dengan tujuan mendapatkan beberapa alternatif dalam menyelesaikan pekerjaan agar pekerjaan selesai lebih cepat dan tidak terjadi keterlambatan dalam menyelesaikan pekerjaan.Dari hasil analisa, didapatkan perbandingan kondisi normal dan kondisi setelah dilakukan crash program dengan penambahan produktivitas alat berat. Analisa dengan kondisi normal mendapatkan hasil penyelesaian proyek selama 240 hari dengan biaya sebesar Rp. 47.452.800.000,-. Sedangkan analisa setelah dilakukan crash program mendapatkan hasil penyelesaian proyek selama 158 hari dengan kenaikan biaya sebesar 12% dan 15% lebih mahal dari biaya kondisi normal.