Studies of Indonesian construction supply chains have been in the early stage. Previous studies have described very well the structures of construction project supply chains. Moreover, one of strategies that have been considered by construction companies for gaining a competitive advantage is to reduce the cost of their supply chains. The research's objective is to identify the cost structure of construction supply chains in Indonesia and factors that could influence it. By knowing these factors, construction companies are expected to be able to determine strategic efforts needed for reducing cost of their construction supply chains. Two construction projects operated by a large construction company were explored as case-studies. Rebar material was chosen for this supply chains study. It was found that the cost of purchasing was very significant. Meanwhile, costs of transportation and inventory were insignificant. It can be concluded that efforts to reduce supply chains cost by reducing costs of inventory and transportation would not be effective. Therefore, factors that could influence the cost of supply chains are related to management of supply chains, such as procurement policy, material requirement planning, supplier qualification, selection process, contract, and supplier development. Santrauka Ankstesniuose Indonezijos statybų tiekimo grandinių tyrimuose labai gerai apibūdintos statybos projektų tiekimo grandinių struktūros. Be to, viena iš strategijų, kurias statybų įmonės nagrinėjo kaip galimybę įgyti konkurencinį pranašumą, buvo išlaidų mažinimas tiekimo grandinėms. Šiuo tyrimu siekiama nustatyti Indonezijos statybų tiekimo grandinių išlaidų struktūrą ir jai įtaką galinčius daryti veiksnius. Žinodamos tokius veiksnius, statybų įmonės turėtų sugebėti nustatyti, kokios strategijos leistų sumažinti išlaidas statybų tiekimo grandinėms. Atvejui tirti pasirinkti du statybų projektai, kuriuos vykdė stambi statybos įmonė. Šiam tiekimo grandinių tyrimui pasirinkta armatūra. Nustatyta, kad pirkimo kaina buvo labai svarbi, o pristatymo ir inventorizacijos išlaidos svarbiomis nelaikytos. Galima daryti išvadą, kad bandymas apriboti išlaidas tiekimo grandinėms, mažinant inventorizacijos ir pristatymo išlaidas, nebūtų veiksmingas. Taigi išlaidoms, kurios skiriamos tiekimo grandinėms, įtaką galintys daryti veiksniai yra susiję su tiekimo grandinių valdymu: pirkimo politika, medžiagų poreikio planavimu, tiekėjų kvalifikacija, atrankos procesu, sutarties sudarymu ir tiekėjų tobulinimo programa.

The advancement of computer technology allows the construction education to exploit the various teaching strategies. Unlike other engineering subjects, teaching construction subjects often requires media beyond traditional class room environment that would enable the creation of field-like construction atmosphere. Construction visualization allows students to exercise and experience various field settings that are too difficult to deliver using traditional teaching approach. This paper aims at describing an attempt to develop and implement building information modelling (BIM) as a platform for teaching construction safety. Using BIM technology students can learn various aspects of safety in construction, which are typically hidden from project documents. Visualization features in BIM are utilized by students to help them identifying potential hazard, unsafe acts, and unsafe conditions in a simulated construction project. The result shows that students are more aware and capable to identify any potential hazard and related safety regulations of construction plan and design pertinent to specific site conditions than that if they were only equipped with a set of construction drawings and specifications.

Labor wages have a large portion (approximately 30%) of construction contract value. Therefore, company should pay attention to labor wages. Unfortunately, existing data about construction labor wages in Indonesian are only showed as daily wages (for labor) and monthly wages (for employee/permanent staff), while there’s no information about their labor burden. Therefore, objectives of this study are to identify the component and structure of construction labor burden and wages in Indonesia and also to identify all factors related. Research method used int this study are empirical and inductive methods. After all data has been collected from field survey, description of the construction labor burden and wages model was compiled into its components. Moreover, comparison analysis used to identify factors related to construction labor burden and wages. Results of data processing and analysis shows that: 1) Construction labor burden in Indonesia for both employee/permanent staff and labor commonly consist of direct and indirect payment, and conditional and lumpsum payment, but there are different distributions between each kind of labor. 2) Construction labor burden and wages in Indonesia commonly depend on company profile, project profile, and labor profile.

Isu Strategis pada Pengadaan Pengusahaan Jalan Tol dalam Kerjasama Pemerintah dan Swasta

Alternative Performance Measurement for Road Management Agencies Using Data Envelopment Analysis Method

Meskipun teknologi konstruksi mengalami perkembangan yang pesat, pelaksanaan proyek konstruksi gedung di Indonesia masih sangat bergantung pada sumber daya manusia. Keberhasilan proyek sangat ditentukan oleh kinerja tenaga kerja di lapangan, khususnya tukang dan laden, yang berada di bawah koordinasi seorang mandor. Dengan demikian, peran mandor menjadi faktor krusial dalam menentukan efektivitas pelaksanaan proyek. Penelitian ini bertujuan untuk mengevaluasi relevansi peran mandor berdasarkan temuan studi terdahulu dengan kondisi aktual saat ini. Metode yang digunakan mencakup penyebaran kuesioner kepada kontraktor berkualifikasi besar yang sedang melaksanakan proyek konstruksi gedung di Kota Bandung, serta wawancara langsung dengan sejumlah mandor konstruksi. Hasil penelitian menunjukkan bahwa sebagian besar peran mandor dari penelitian sebelumnya masih relevan hingga saat ini. Namun, terdapat peningkatan signifikan pada peran mandor sebagai pelaku usaha yang menunjukkan karakteristik mirip subkontraktor, meskipun belum berbadan hukum dan memiliki keterbatasan finansial. Selain itu, kinerja mandor saat ini dinilai lebih baik dibandingkan satu dekade lalu, seiring dengan meningkatnya tuntutan pasar dan pengaruh pelatihan keterampilan teknis.