Construction industry plays an important role in Malaysia's economy. Therefore, it is important to introduce more advance or new technologies from overseas to our country in order to growth the economy. Pre-fabrication technology is a new construction method in construction industry. This technology has been widely used in many countries due to many pros it has over the traditional construction methods, which is cast in-situ method.
Pre-fabrication is the assembling components making in a factory or manufacturing before deliver those components to the construction site. After completed the selected components on factory or manufacturing, those components will transport to the construction site where the structure is to be located. On the other hand, for conventional construction method, which is cast in-situ, is transporting those selected materials like cement, sand, aggregate, brick, etc from factory or manufacturing to the construction site. Then the assembly only will carry out on site after those materials have delivered to site.
Industrialised Building System (hereinafter referred to as 'IBS') is a technique of construction, which introduced by Construction Industry Development Board (hereinafter referred to as 'CIDB') was succeed and applied the pre-fabricated technology into the construction industry in Malaysia. IBS is define as a construction system in which components are manufactured in a factory, on or off site, positioned and assembled into structure with minimal additional site work (CIDB, 2003).
Pre-fabrication technology has become more and more famous and popular in Malaysia's construction industry recently. This is due to the technology has many benefits over the traditional construction methods which is cast in-situ technology. However, it also contains some weaknesses for pre-fabrication technology. For example, the transportation costs may be very expensive to deliver the complete components to the construction site. Not only that, the maintenance cost and repairing cost is higher depend to the cast in-situ method. Therefore, for long term buildings are not suitable to construct by using pre-fabrication technology.
The scope of study for this research included to define the background of the IBS system as well as the previous projects done by IBS system with satisfied completed in Malaysia. Besides, research on the advantages and disadvantages of the pre-fabrication and cast in-situ methods. In addition, it will cover the construction speed for actual construction projects, mainly in Malaysia.