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Abstrak :
The Impact Of Computerization In Estimating Costs On The Accuracy Of Cost Estimate For Building Projects In Indonesia Construction market is becoming tougher and more competitive. This situation makes accurate cost estimates vital for contractor survival. Inadequate time to prepare cost estimates and incomplete project scope definition because of the lack of historical data for similar jobs are problems that have to be handled by contractor's estimators. The problems can decrease accurateness of the estimates. Computer's role in decreasing these problems is becoming obvious. The other role in providing much important information helps to increase the accuracy. This research is to study whether appropriate computerization in estimating costs will increase the accuracy of cost estimates. The other aim is to find which of the aspects of computerization that strongly correlate with the accuracy of the estimates. The qualitative data that are used in this research are ordinally quantified to facilitate the statistical analysis. Because of the size of data, the shape of the population distribution from which the sample is drawn can not be assumed to approximate the normal distribution. Therefore, nonparametric method is used in this research. First, the aspect of computerization is analyzed if they might be grouped into appropriate factors. Then, the representativeness of these aspects is calculated by correlation analysis. Sensitivity of the accuracy to the aspects is also investigated. Finally, the factors are compared to each other based on the representativeness and the sensitivity. The result explains that computerization in estimating costs consists of two important factors. The factors are human or management factor (computer users' behavior in exploiting computers) and computer factor itself. Both of these factors can be seen that they increase the accuracy of cost estimates. However, the management factor is more sensitive than the other one to the accuracy of cost estimates. This factor is significantly correlated (has strong positive correlation) with the accuracy. The use of historical data for similar works has the strongest correlation with the accuracy. The other factor has positive correlation with the accuracy, but the correlation is not as strong as the human factor has. The computer factor would have stronger correlation with the accuracy if the computer's abilities were maximally exploited. On the whole, the impact of the computerization increases the accuracy. The important thing is both factors should be well coordinated.

Abstrak :
ABSTRAK
Penelitian ini dilakukan untuk melihat pengaruh kualitas suatu estimasi biaya terhadap kinerja biaya pada pembangunan proyek taman di Suku Dinas Pertamanan Jakarta Timur. Hasil penelitian ini yang dilakukan dengan menggunakan program SPSS 17.0 didapatkan persamaan model regresi linier yang menunjukkan bahwa peningkatan kinerja biaya dipengaruhi oleh 2 (dua) variabel yang paling berpengaruh yakni ; Kualitas perkiraan harga peralatan dan kualitas sumber bahan baku. Setelah mengetahui variabel yang paling berpengaruh yang dominan maka diharapkan adanya estimasi yang berkualitas dalam proses estimasi agar biaya proyek sesuai dengan anggaran yang telah direncanakan dan sesuai spesifikasi.

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Abstract
This research was conducted to see the quality influence of cost estimation toward cost performance on the park development project in agency of landscaping, East Jakarta. The results of this study is performed by using SPSS 17.0 program obtained a linear regression model equation which shows that the increase in cost performance is affected by 2 (two) of the most influential variables, namely: Quality estimation of equipment prices and quality of raw material sources. After learning the most influential variables are dominant, it is expected that the estimation of quality in the estimation process so that the cost of the project in accordance with the planned budget and specification.

Abstrak :
Penelitian ini membahas faktor penyebab keterlambatan pada pekerjaan struktur bangunan gedung bertingkat. Pekerjaan struktur menjadi penting karena hampir seluruh komponen yang berada di dalamnya termasuk dalam jalur kritis. Keterlambatan juga memiliki pengaruh terhadap perubahan anggaran biaya yang telah direncanakan. Penelitian ini bertujuan untuk menemukan faktor dominan penyebab keterlambatan pekerjaan struktur bangunan gedung bertingkat, dan berapa besar pengaruh dari keterlambatan tersebut terhadap perubahan RAB struktur. Setelah ditemukan faktor dominan penyebab keterlambatan dan hubungan terhadap perubahan RAB struktur, kemudian dilakukan strategi pengendalian agar efek yang ditimbulkan dapat diminimalisir dan dicegah untuk fase pekerjaan selanjutnya agar proyek dapat berjalan dengan lancer dan selesai tepat pada waktu yang telah direncanakan.

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This research discusses about factors that causing delay in structural work of high rise building. Structural work become important because almost all the component of this works included in the critical path. This study aims to find the dominant factor causing delay in structural work of high rise building. And how large the effect of such delay to the changes of structural adjusted financial budget. After found the dominant factor that can cause delay and the relation between delay and the changes of structural adjusted financial budget. Then the control strategy will be prepared for minimizing the impact of delay and as a prevention strategy for the next phase of work, so the project can continue smoothly and can be finished om time.