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"In order to increase the quality of Project implementation much research will need to be carried out in Indonesia and abroad. In 1960 the Government of UK identified many construction projects that were not able to increase the communication and coordination between the design and construction phase. The concept of build ability arose in 1979 in order to enhance the design process by inputting the construction method during the design phase. The Construction Industry Research Information Association (CIRIA) has defined build ability as follows: "the extent to which the design of a building facilitates ease of construction, subject to overall requirements for the completed building?.

Project (CICE) researched into the increasing of quality, efficiency, productivity and cost effectiveness in the construction projects. The research estimates that constructability improvements saved at least 10-20 times the cost of the constructability effort. The Construction Industry Institute, Austin, USA in 1986 defined constructability as ?the optimum use of construction knowledge and experience in planning, engineering, procurement and field operations to achieve overall project objectives?.

The research, which is a partial requirement for a Master degree in construction management at the University of Indonesia, was aimed at understanding the coordinating position and influence of the owner of projects for improving constructability during conceptual planning phase.

The research proceeded to study into the impact of owner contribution for improving constructability during conceptual planning phase. In order to further understand such owner contribution, its impact on project construction cost performance was measured and quantified.

Data of projects constructed in Indonesia were then obtained through questionnaires from official owner representatives of companies hi Jakarta. Variables in the questionnaire which represented owner quality contribution were then correlated to the same project cost performance variable.

In depth analysis of the correlation were then carried out to build regression models of the relationship between quality of owner contribution during conceptual planning phase to project cost performance.

The statistical including validation test needs were also carried out in order to provide the guidelines for increasing knowledge in constructability for future projects in Indonesia."

"In Order to increase the quality of project implementation much research will need to be carried out in Indonesia and abroad. In 1982 The Business Roundtable's team in the US found that opportunities to reduce project costs and schedules by using existing and new construction technology are lost because construction too often is relegated to operate as a production function separated from financial planning, scheduling, and engineering or architectural design. The Construction Industry Institute's (CII) Task Force defines this term as Constructability, which is the optimum integration of construction knowledge and experience in planning, engineering, procurement, and field operations to achieve overall project objectives. As the customer, the owner gets what he insist on. As the leader of the project team, the owners play a vital role in using constructability to meet project objectives. Specific project documenting the constructability effort have shown that owners accrued an average reduction in total project cost of 4.3% and in project schedule of 7.5%_ These savings represented a 10-to-1 return on the owner's investment in constructability. Although significant saving can result, the opportunities available are often overlooked by owners. This research was conducted to study the role of project owners for implementing constructability improvement during conceptual planning phase which leads to an improve project time performance of construction project in Jabotabek Area. A questionnaire survey was used as the method for collecting data. Statistical analysis was performed to analyze the data and to develop a regression model between the role of project owners for constructability improvement during conceptual planning phase and the performance of construction project's schedule. The result of this study shows a positive linier correlation between the project owner's role for constructability improvement during conceptual planning phase and the project time performance. The main variables are assuring that key individual assigned to the project team each have appropriate experience with the project and clearly state the priority of the project objectives."

"In Order to increase the quality of project implementation much research will need to be carried out in Indonesia and abroad. In 1982 The Business Roundtable's team in the US found that opportunities to reduce project costs and schedules by using existing and new construction technology are lost because construction too often is relegated to operate as a produstion function separated from financial planning, scheduling, and engineering or architectural design. The Construction Industry Institute's (CIT) Task Force defines this term as Constructability, which is the optimum integration of construction knowledge and experience in planning, engineering, proqurement, and field operations to achieve overall project objectives. As the customer, the owner gets what he insist on. As the leader of the project team, the owners plays a vital role in using constructability to meet project objectives. Specific project documenting the constructability effort have shown that owners accrued an average reduction in total project cost of 4.3% and in project schedule of 7.5%. These savings represented a 10- to-1 return on the owner's investment in constructability. Altough significant saving can result, the opportunities available are often overlooked by owners. This research was conducted to study the role of project owners for implementing constructability improvement during conceptual planning phase which leads to an improven project time performance of construction project in Jabotabek Area. A questionnare survey was used as the method for collecting data. Statistical analysis was performed to analyse the data and to develop a regression model between the role of project owners for constructability improvement during conceptual planning pQase and the performance of construction project's schedule. The result of this study shows a positive tinier correlation between the project owner's role for constructability improvement during conceptual planning phase and the project time performance. The main variables are assuring that key individual assigned to the project team each have appropriate experience with the project and clearly state the priority of the project objectives."

"Bangunan konstruksi dapat menghasilkan rancangan yang baik, bila awalnya telah dipikirkan bagaimana cara membangunnya. Kegagalan konsultan perencana memperkirakan bagaimana suatu rancangan dibangun oleh kontraktor dapat menyebabkan permasalahan yang menimbulkan kenaikan biaya dan keterlambatan jadwal pelaksanaan konstruksi. Permasalahan tersebut dapat diselesaikan dengan constructability yaitu dengan melibatkan tenaga ahli konstruksi yang berpengetahuan dan berpengalaman untuk ikut serta dan memberi masukan pada tahap perancangan. Hal ini lebih menjamin agar rancangan disusun dengan menggunakan metode dan teknologi yang dapat diterapkan oleh kontraktor.Penelitian ini dilakukan dengan mengirimkan kuesioner ke berbagai perusahaan konsultan perencana yang berada di wilayah Jabotabek. Dan hasil penyebaran kuesioner diperoleh 30 kuesioner dan 50 kuesioner yang diterima kembali untuk dianalisis dengan menggunakan program SPSS.Hasil analisis dengan model regresi berganda dapat menggambarkan adanya hubungan korelasi positif yang sangat kuat antara variabel-variabel peningkatan constructability pada perancangan oleh konsultan perencana dengan kinerja biaya. Model regresi berganda terdiri dari 3 (tiga) variabel penentu yang mempengaruhi kinerja biaya berdasarkan penilaian terhadap sampel dan koordinator proyek dari perusahaan konsultan perencana, yaitu :1. Menyesuaikan pendekatan rancangan dengan metode konstruksi,2. Mendefinisikan secara jelas batasan kontraktor dalam dokumen perancangan, dan3. Secara aktif meminta masukan dari personil konstruksi pada setiap tahapan dan proses perancangan.Dan hasil penelitian ini, peningkatan constructability pada perancangan dapat digunakan untuk menghasilkan kualitas rancangan yang dapat meningkatkan kinerja biaya pada pelaksanaan proyek-proyek konstruksi di Indonesia di masa mendatang.

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Influence of Constructability Improvement in Design Phase to Project Cost Performance of Construction Projects in IndonesiaConstruction building could to products a good design, if the early to think how in manner to be constructed. Failure of designer to consider how the design should be implemented by contractor can result in scheduling problems and delays during the construction process. That problems could be solved with constructability namely by the construction expert involved who had knowledge and experience to joint and seek construction input in design. This has more to warrant in order that design to arrange by using technology and method that could apply of contractor.

This research has done in the designer companies with sent some questionnaires to several of designer companies in Jabotabek. From questionnaires spread result 30 from 50 questionnaires received to be viable analysis with used SP SS program.

The result of multiple regression analysis model shows that influence constructability improvement in design of designer will improving project cost performance. Multiple regression models has 3 of key variables influencing in cost performance carried out by estimates from persons of construction expert or project coordinator in designer's firm are:

(1) Integrate design approach with construction method,

(2) Clearly define contractor interface in the design document, and

(3) Actively seek construction input to all stages of the design process.

From these research resulted, construction improvement in design can be used to obtain the quality of design result that cost performance can be improvement in operation of projects construction in the future of Indonesia construction project."

"The Influence of Improving Constructability during The Design Phase on the Performance of Construction Project Schedule in IndonesiaConstructability as defined by Construction Industry Institute, Constructability Concepts File, The University of texas at Austin as; the optimum use of construction knowledge and experience during the phases of planning, designing, procurement and construction to achieve the project goal. Constructability involves the thought of how to build a project even before it is designed.Currently there are three issues which dominate constructability applications; design, layout, and construction method. In order to obtain deeper understanding of the potential application of Constructability for Construction Project implementation, the research focussed on the effect of its key characteristics introduced during the design phase on the performance of Construction Schedules in Indonesia.Data was obtained through questionnaires from project architects and structural engineers of Consultants in 24 Construction Projects executed during the last decade between 1985 - 1995. Correlation and multiple regression analysis were utilized to establish models on the relation between Constructability variables and Construction Schedule Performance. The degree of completing construction projects as measured by actual against planned time performance proved to be related to Constructability variables in a linear manner.From the analysis of 48 prospective explanatory Constructability variables during the design phase identified three determinants influencing Construction Schedule Performance. The three significant Constructability variables were; to confirm the filing system (x23), to describe the pre-fabrication system (x43), and to define clearly the contractor limit in design document (x12).Further research provided additional evidence of the existence of Constructability characteristics through dummy variables which were; to eliminated weather problem (x46)."

"[Kecelakaan kerja konstruksi di Indonesia masih tinggi. Pencegahan kecelakaan kerja masih lebih berorientasi downstream, yaitu terfokus pada tahap konstruksi. Berbagai penelitian mengungkapkan bahwa tahap perencanaan memegang peranan besar dalam mempengaruhi kinerja keselamatan kerja konstruksi. Pola pikir upstream haruslah dikembangkan, salah satunya dengan menerapkan konsep Safety in Design. Ada berbagai faktor yang berpengaruh terhadap konsep tersebut. Pada penelitian ini faktor-faktor tersebut ditinjau dari aspek manusia/arsitek, manajemen, teknologi dan material. Hasil analisa statistik menunjukkan bahwa kompetensi safety dari arsitek merupakan faktor utama yang paling berpengaruh. Produk akhir penelitian ini adalah 8 rekomendasi untuk meningkatkan kinerja keselamatan kerja konstruksi melalui Safety in Design;Construction work accident in Indonesia is still high. Prevention of occupational accidents is still more oriented downstream, which is focused on the construction phase. Various studies have revealed that planning stages play a major role ininfluencing the performance of construction safety. Upstream mindset must be developed, one of them by applying the concept of Safety in Design. There are various factors that influence the concept. In this study these factors in terms of aspects of human/architects, management, technology and materials. Statisticalanalysis showed that the safety competence of the architect are the main factorsthat most influence. The final product of this study is 8 recommendations toimprove the safety performance of construction work through the Safety inDesign, Construction work accident in Indonesia is still high. Prevention of occupationalaccidents is still more oriented downstream, which is focused on the constructionphase. Various studies have revealed that planning stages play a major role ininfluencing the performance of construction safety. Upstream mindset must bedeveloped, one of them by applying the concept of Safety in Design. There arevarious factors that influence the concept. In this study these factors in terms ofaspects of human/architects, management, technology and materials. Statisticalanalysis showed that the safety competence of the architect are the main factorsthat most influence. The final product of this study is 8 recommendations toimprove the safety performance of construction work through the Safety inDesign]"

"Keterlaksanaan konstruksi constructability merupakan sebuah pendekatan yang menghubungkan proses desain dan konstruksi sehingga dapat menghemat waktu untuk menyelesaikan suatu proyek konstruksi Trigunarsyah, 2004. Salah satu konsep dari constructability adalah penggunaan modularisasi pracetak precast . Industrialised Building System IBS merupakan teknik konstruksi dimana komponen ndash; komponennya diproduksi di lingkungan yang terkendali di luar atau di dalam site. Penelitian ini bertujuan untuk mengetahui faktor pendukung dan faktor penghambat yang paling dominan dalam penerapan IBS serta strategi penerapan konsep constructability yang difokuskan kepada konsep penggunaan IBS untuk meningkatkan kinerja waktu pada proyek Pembangunan Rusun di Indonesia. Metode penelitian berupa studi kasus pada Proyek Rancang Bangun Pembangunan Rumah Susun Bertingkat Tinggi, Kemayoran yang dibangun oleh Kementerian PUPR Tahun Anggaran Tahun Jamak 2016-2017. Dengan menggunakan metodologi tinjauan pustaka, wawancara semi terstruktur kepada pakar atau praktisi, dan kuesioner kepada kontraktor dan pemilik proyek, diperoleh 3 faktor pendukung yang paling dominan, 4 faktor penghambat yang paling dominan dan 11 strategi penggunaan IBS untuk meningkatkan kinerja waktu.

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Constructability is an approach that links the design and construction process so that it can save time to complete a construction project Trigunarsyah, 2004. One concept of constructability is the use of precast modularization precast. Industrialised Building System IBS is a construction technique in which components are produced in a controlled environment outside or inside the site.

This study aims to identify the most dominant enablers and barriers in the application of IBS and the strategy of applying the concept of constructability which is focused on using of IBS to improve the time performance in the apartment construction project in Indonesia.

The research method is a case study on the High rise Apartment Construction Design Build Project, Kemayoran that built by the Ministry of PUPR by Multi Years 2016 2017. Using the literature review methodology, semi structured interviews to experts or practitioners, and questionnaires to contractors and project owners, obtained 3 of the most dominant enablers, the 4 most dominant barriers and 11 IBS use strategies to improve time performance."

"Meningkatnya persaingan dan tuntutan efisiensi pada industri konstruksi menuntut adanya pengendalian mutu yang dikombinasikan dengan aspek ekonomis dan jadwal proyek. Hal ini memotivasi berbagai penelitian yang menghasilkan teknik-teknik peningkatan mutu dan efisiensi/efektifitas dari sebuah proyek seperti total quality management, value engineering, designability, contractability, constructability, operability, maintainability dan sebagainya. Penelitian ini bertujuan untuk mengetahui dan menganalisa salah satu peningkatan mutu proyek konstruksi yaitu penerapan peningkatan constructability pada tahap perencanaan dan perancangan proyek. Pendekatan ini dilakukan karena besarnya pengaruh perencanaan dan perancangan terhadap kualitas, biaya dan waktu pelaksanaan proyek secara keseluruhan. Pelaksanaan penelitian studi kasus ini dilakukan pada sebuah perusahaan nasional yang bergerak di bidang industri konstruksi dengan pola design and build dimana penelitian difokuskan pada pemahaman, pelaksanaan, keuntungan, dan hambatan constructability di perusahaan tersebut dan dua buah proyek yang dijadikan studi kasus. Jenis penerapan constructability secara informal yang didapat pada studi kasus ini diindikasikan oleh tidak adanya prosedur tertulis tentang constructability, rendahnya tingkat lesson learned, tidak adanya koordinator constructability yang ditunjuk secara resmi, masih banyaknya hambatan pelaksanaan dan tidak adanya pencatatan kinerja constructability. Walaupun demikian pada pelaksanaan constructability secara informal ini, bahwa penerapan constructability pada tahap perencanaan dan perancangan terbukti meningkatkan kinerja proyek konstruksi, dengan variabel yang paling berpengaruh adalah penjadwalan berdasarkan construction sensitive dan fasilitas desain dalam mengefisienkan konstruksi."

"Di era pembangunan saat ini, pelaksanaan proyek konstruksi dan infrastuktur sedang marak, yang menuntut perusahaan dalam industri untuk meningkatkan kinerjanya. Dalam upaya meningkatkan kinerja dan menciptakan efisiensi pada perusahaan di industri konstruksi dan infrastruktur khususnya BUMN, pemerintah Indonesia mengeluarkan kebijakan untuk dilakukannya implementasi Enterprise Resource Planning (ERP). Tujuan dari Penelitian ini adalah untuk melakukan evaluasi hasil implementasi Enterprise Resource Planning terhadap peningkatan kinerja proses bisnis pada salah satu BUMN konstruksi dan Infrastruktur. Analisis Peta Proses Bisnis sebelum dan setelah Implementasi ERP, dan Survey dilakukan untuk mengevaluasi kinerja dari proses bisnis pengelolaan biaya usaha di perusahaan hasil implementasi ERP. Kriteria Evaluasi dikembangkan berdasarkan empat dimensi kinerja proses bisnis yaitu waktu, biaya, kualitas dan fleksibilitas. Hasil analisis proses bisnis dan survei mengindikasikan bahwa implementasi ERP telah memberikan dampak positif terhadap kinerja proses bisnis, namun ditemukan adanya kelemahan yang dirasakan user dalam implementasinya. Melalui penelitian ini, peluang perbaikan teridentifikasi untuk membantu perusahaan membuat keputusan dalam mengimplementasikan ERP dengan lebih baik

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In this development era, many construction & infrastructure projects are being held all over the world, that requires company in the industry to improve their performances. Furthermore, in an effort to increase performances and finally create efficiency, The Indonesian Government issues policy that directs the construction & infrastructure companies especially State-Owned Enterprise’s (SOE’s) to implement Enterprise Resource Planning (ERP). The purpose of this research is to evaluate the results of ERP implementation towards the business process performances improvement in one of the constructions & infrastructure SOE which has a crucial role in the establishment of the Trans Sumatera Toll Road Megaproject in Indonesia. Analysis of business process before and after implementation is carried out as well as the survey to evaluate the performances of expenditure management business process in the company after the ERP implementation. The evaluation criteria are developed based on the four dimensions of Business Process Performance, which is time, cost, quality and flexibility. The results from the study indicate that ERP Implementation has given positive effect toward business process performance improvement, while there are still some weak points in the implementation. Due to this research, opportunities for improvement are identified to support company in making decision for better ERP implementation."