Comparative Assessment Of Factors Affecting Cost Of Industrialized Building And Conventional Building System In Nigeria

CHAPTER ONE
INTRODUCTION
1.1      Background of the study
Construction system is undergoing a translational change from a construction industry employing conventional construction to a more modernized and advanced system. Like a pre-fabricated component system, steel framing system, block work and mould system and timber framing system in all such system is known as industrialized building system (IBS).In this new technique of construction in order to increase the productivity of construction and improve quality of work. The system can be used good construction, equipment, materials and better project planning. This study is present and defined actual difference between conventional and industrialized building system, which can provide the necessary information on the building cost comparison between the two systems. This study also addresses the building cost comparison, more advantages and effective in between the two systems. Such provides the details building cost indicates which of the two are cheaper.
Conventional building method is defined as components of the building that are pre-fabricated on site through the processes or timber/plywood formwork installation, steel reinforcement and cast institute. Conventional building is mostly built of reinforced concrete frames. The traditional construction method uses wooden formwork. It is much more costly for construction which includes labour, raw material, transportation and low speed of construction time.
Industrialized building system is an advancement of the new construction technology in the Nigerian construction industry of today. It is an alternative of construction that can change many aspects in building construction. The industrialized building system is a construction system that is built using prefabricated components and is systematically done using machine, formworks and other forms of mechanical equipment. The components are manufactured offsite and once completed will be delivered to construction sites for assembly and erection. It is also can be interpreted as a system which components is manufactured in factory and then installed on site based on the size and dimension of the component required. Furthermore, systems in which concrete components prefabricated at site or in factory are assemble to form the structure with minimum in situ concrete.
Currently, the industrialized building and conventional building system in Nigeria has gradually widely used as a modern method of construction. As an example, the industrialized building system (IBS) and conventional building system has been applied in several projects such as Coca-Cola industry in FCT Abuja, Benue brewery industry in Benue state and Benue Cement Company in Yandev Gboko Federal Housing Authority Lugbe, Mass Housing Construction FCT Abuja, and residential building in FCT Abuja etc. The implementation of industrialized building system (IBS) and conventional building system in Nigeria is reducing the entrance of foreign labour and to expedite the progress of the construction.
The common types of industrialized building system which are generally used in construction are pre-cast concrete framing, panel and box systems, steel formwork system, steel framing system, prefabricated timber framing system, and block work system.
Industrialized building system (IBS) has proven that it can contribute many advantages in construction project. The industrialized building system (IBS) can reduce the number of unskilled and foreign workers on site. The presence of them can increase cost and wastage in construction industry.