A construction project has several factors that affect the success of a project. One of the factors was an optimal project’s cash flow. Optimizing cash flow of a construction project can be done by making several cash flow plans, and choosing the best one considering appropriate project’s time and cost constraints. The purpose of this study is to obtain an optimal cash flow plan on a construction project  using a capital loan from Sharia Bank.This research will be carried out on a specific project which is Construction and Rehabilitation Project of Government Health Service Building, District of Gunungkidul. In this study, the method used to analyze data is to make several project cash flow based on “Earliest Start” scheme by determining the duration for each activity and creating a network diagram using the Precedence Diagram Method (PDM). The final step is analysing the cash flow by calculating negative overdraft for each cash flow plan to determine the amount of capital loan from Sharia Bank and then comparing profits to obtain the optimal one.Analysis and discussion reveal that on the system of given Down Payment, and Project’s Termyn 50%, 75% and 100%, and a loan from Sharia Bank it is found that the optimum cash flow will make profit of 7.49%. Keywords: Cash Flow, Earliest Start (ES), Optimal Profit, Sharia Bank.AbstrakProyek konstruksi memiliki beberapa faktor yang mempengaruhi kelancaran proyek tersebut, salah satu yang mempengaruhi proyek tersebut adalah cash flow optimal. Optimalisasi cash flow suatu proyek konstruksi dapat dilakukan dengan membuat rencana cash flow secara tepat dari suatu proyek. Tujuan penelitian ini adalah mendapatkan rencana cash flow optimal pada proyek konstruksi dengan menggunakan sumber modal bank syariah.Obyek penelitian akan dilakukan pada proyek Pembangunan dan Rehabilitasi Gedung Pelayanan Kesehatan Pemerintah Kab. Gunungkidul. Pada penelitian ini dalam analisis data dibuat rencana cash flow proyek dengan menentukan durasi untuk setiap kegiatan dan membuat diagram jaringan kerja earliest start menggunakan metode Precedence Diagram Method (PDM) dengan bantuan software microsoft. Langkah terakhir adalah analisis cash flow dengan menentukan overdrat negatif pada rencana cash flow untuk menentukan nominal pinjaman dengan menggunakan sumber modal bank syariah lalu membandingan keuntungan untuk mendapatkan profit optimal.Hasil analisis cash flow dan pembahasan didapat beberapa kesimpulan yaitu pada sistem pembayaran uang muka, termin 50%, termin 75% dan termin 100% dari owner serta menggunakan pendanaan bank syariah didapatkan cash flow optimal pada kondisi penjadwalan earliest start dengan persentase profit sebesar 7,49%. Kata kunci: Cash Flow, Earliest Start (ES), Optimal Profit, Bank Syariah.

Quantity take-off menjadi hal yang sangat krusial karena menjadi dasar perhitungan yang berkelanjutan untuk tahap perencanaan. Quantity take-off digunakan untuk perhitungan BoQ atau estimasi biaya. Kesalahan dalam memperkirakan quantity take-off akan menyebabkan penyimpangan biaya dan atau adanya penyimpangan pada volume kebutuhan material. Diperlukan adanya perhitungan quantity take-off dan rencana anggaran biaya (RAB) yang efektif yang dapat dilakukan dengan metode BIM 5D. Penerapan konsep BIM memudahkan dalam ekstraksi quantity take-off langsung dari model 3D hingga kemudian terintegrasi dalam pengolahan estimasi biaya.  Penelitian ini bertujuan untuk mendapatkan estimasi biaya dengan menerapkan konsep BIM 5D. Menggunakan bantuan software PriMus untuk membuat AHSP dan PriMus IFC untuk ekstraksi quantity take-off. Hasil yang didapatkan dari penelitian ini, bahwa dengan menggunakan konsep BIM 5D estimasi biaya yang dihasilkan terdapat selisih sebesar 7% lebih kecil dari anggaran biaya rencana awal. Hal tersebut terjadi dikarenakan perbedaan detail perhitungan volume pada perencanaan awal secara konvensional yang dihasilkan, serta beberapa diantaranya disebabkan karena data dari perencanaan modeling tidak memodelkan semua elemen konstruksi, yang kemudian muncul tanggung jawab berkelanjutan atas masalah tersebut oleh BIM modeler. Implementasi konsep BIM 5D dapat meningkatkan komunikasi, kolaborasi, dan menciptakan komitmen atau tanggung jawab yang berkelanjutan sehingga proses pengambilan keputusan menjadi lebih cepat dan tepat.

The purpose of this study is to design a Building Information Modelling (BIM) integration model for architectural education in adopting BIM culture. Most of the current models on BIM adoption are directed toward the realm of construction industries (consultant firms and contractors) and less on higher education institutions. The discourse on education is mostly concerning experimentation on curricular integration and the lack of general concepts of integration. The main research inquiry of this study is concentrated on which criteria are best suited to the education culture. Utilizing reflective discussion of past experiences and a semisystematic literature review, detailed criteria to capture the multidimensional facets of BIM adoption are proposed. The study proposes the model that offers six main integration criteria: (a) institution vision and priorities, (b) infrastructure, (c) curriculum integration, (d) human resources, (e) knowledge organization, and (f) change management. The application of the model may be limited to architectural schools which are still in the initial process of BIM adoption but the comprehensiveness of the model may possibly be developed as the basis for readiness assessment, roadmap development, and exchange terminologies between education and the wider context of architecture, engineering, construction, operation and management industries.

The permit process must comply with laws and regulations. The permit functions as controlling and supervising tool from the government of activities in certain cases based on the guidelines that must be implemented. The permit also functions as a disciplinarian and regulator in accordance with the law in the administration of government. In the process, several constrains or obstacles often occur in terms of the period of the process as well as technical and non-technical constrains. In this research, an analysis of the scheduling of the site plan permit approval process is based on field data related to the site plan permit approval process with the PERT method. The data used are primary data in the form of interviews and filling in the form of questions and secondary data in the form of a site plan approval process flow. The data that has been collected is then processed and analyzed in several stages. First, calculate the expected time period (te) using interview data and the results of filling in the expected time period (te), so that the expected time period for each activity will be found in accordance with the site plan approval process flow. Second, determine the dependency relationship between activities. In this stage, the relationship between each activity is determined. Third, create a network by changing the existing site authorization process flow into a form of network planning. The results of the schedule using the PERT method are a period of 38 days with alternatives that can be done to reach the time (Tx) of 18 working days in accordance with the Regent Regulations. In addition, the probability of the overall activity being completed is 0.8531 or 85.31%.