1.1 Introduction
Building construction refers to the process of planning, designing, assembling, and completing structures through the use of materials, labour, equipment, and technical knowledge to create functional buildings. According to R. Chudley and Roger Greeno (2017), building construction involves the systematic application of construction methods and materials to produce safe and durable structures that meet human needs.
The construction industry has traditionally depended on conventional building processes, which involve on-site activities such as foundation work, bricklaying, concrete mixing, and manual installation of building components.
Innovative building processes have emerged as alternatives that apply modern technologies and improved techniques to enhance construction efficiency. These methods include prefabricated buildings, modular construction, 3D printing technology, and the use of sustainable materials. According to Mohamed Al-Hussein et al. (2013), innovative construction approaches improve productivity by reducing construction time, increasing accuracy, and minimizing material waste.
The comparison between innovative and conventional building processes is important because construction projects require methods that balance cost, quality, speed, and sustainability. As a prelude to other parts of this study, this chapter will discuss the background upon which this study was initiated, the statement of problems that led to this study, the aim and objectives of the study. Others are significance of the study, scope of work, research questions, limitation of the study and definition of terms.
1.2 Background of Study
Historically, building construction dates back to ancient civilizations where humans developed simple methods of creating shelters using locally available materials such as wood, stone, clay, and mud. Early construction practices were mainly based on traditional knowledge passed from one generation to another, with little dependence on advanced technology. According to Francis D. K. Ching, early building methods focused on durability, protection from environmental conditions, and meeting basic human needs through the use of simple construction techniques (Francis et al., 2014).
As societies developed, conventional building processes became more organized through improvements in design, material production, and construction management. The introduction of materials such as cement, steel, and reinforced concrete transformed the construction industry by allowing the development of stronger and more complex structures. According to Kenneth Frampton (2015), industrial development significantly influenced construction practices by introducing new materials and methods that improved the capacity of builders to create larger and more functional buildings (Kenneth Frampton, 2015).
Construction is one of the most important sectors that contributes to economic growth, infrastructure development, and improvement of living standards through the provision of residential, commercial, and industrial buildings. The process of constructing buildings involves the integration of planning, design, materials, labour, technology, and management practices to achieve safe and functional structures. According to Roger Greeno and Roy Chudley (2016), building construction is a coordinated activity that requires the proper selection and application of construction methods to ensure quality, durability, and efficiency. Over the years, the construction industry has relied heavily on conventional building processes, which involve traditional methods such as block laying, concrete works, timber works, and other activities carried out mainly at the construction site. However, the increasing demand for faster, safer, cost-effective, and environmentally responsible construction has encouraged the development of innovative building processes.
Charles Kibert (2016) articulated that conventional construction methods have contributed significantly to building development worldwide because they are familiar, accessible, and supported by existing construction practices. Similarly, Richard H. Clough et al. (2015) reported that traditional construction practices may experience productivity challenges because most activities depend on manual operations and weather conditions, which may affect project schedules and overall performance.
Innovative building processes represent modern approaches that incorporate advanced technologies, improved materials, and new methods of construction to achieve better project outcomes. These processes include prefabrication, modular construction, building information modelling, automated construction techniques, and the use of sustainable building materials. According to Mohamed Al-Hussein et al. (2013), innovative construction methods improve productivity by allowing some building components to be produced under controlled conditions before being assembled at the project location. In the same vein, Martin Loosemore (2015) asserted that technological advancement in construction is important for improving efficiency, reducing waste, and responding to the changing needs of the built environment. Furthermore, the adoption of innovative building processes has continued to increase because of their potential benefits in reducing construction time, improving accuracy, and supporting sustainable development. This study is set against the backdrop of the continuous search for improved construction methods that address the limitations of traditional practices while promoting efficiency, and better project delivery outcomes in the building industry.
1.3 Statement of Problems
Investigation revealed that the construction industry is facing increasing challenges in selecting building methods that provide better quality, cost efficiency, durability, and environmental sustainability. On the other hand, innovative building processes such as prefabrication, modular construction, and the use of advanced materials are designed to improve speed, accuracy, and resource management.
Furthermore, there is a need to compare innovative and conventional building processes to determine their strengths, weaknesses, and suitability for modern construction projects. While conventional methods remain widely used because of their familiarity and availability of skilled workers, innovative methods provide opportunities for faster completion, improved quality control, and reduced environmental impact.
It is against this backdrop that this study seeks to compare the construction processes of innovative and conventional building methods.
1.4 Aim and Objectives of Study
The aim of this study is to compare the construction processes of innovative and conventional building methods.The specific objectives of this research are to:
- Examine the major differences between innovative and conventional building construction processes.
- Assess the effects of innovative and conventional construction methods on project cost.
- Determine the influence of both construction methods on project completion time.
- Identify the challenges associated with the adoption of innovative building processes.
- Evaluate the suitability of innovative and conventional building methods for construction projects in Nigeria.
1.5 Research Questions
The study came up with research questions so as to be able to ascertain the above stated objectives. The following research questions guide the study:
- What are the major differences between innovative and conventional building construction processes?
- What effects do innovative and conventional construction methods have on project cost?
- How do innovative and conventional building methods influence project completion time?
- What challenges affect the adoption of innovative building processes?
- How suitable are innovative and conventional building methods for construction projects in Nigeria?
1.6 Research Hypotheses
In order to pursue the objective of this study, the following generalized statements have been designed to guide and aids in obtaining the result for the experiment to be conducted. For this work, the null hypothesis will be represented with H0 while the alternative hypothesis will be represented with hypothesis H1.
Hypothesis One
- H0: There is no significant difference between innovative and conventional building construction processes.
- H0: There is a significant difference between innovative and conventional building construction processes.
Hypothesis Two
- H0: Innovative and conventional building methods have no significant effect on project cost.
- H0: Innovative and conventional building methods have a significant effect on project cost.
Hypothesis Three
- H0: Innovative and conventional building methods have no significant influence on project completion time.
- H0: Innovative and conventional building methods have a significant influence on project completion time.
Hypothesis Four
- H0: There are no significant challenges affecting the adoption of innovative building processes.
- H0: There are significant challenges affecting the adoption of innovative building processes.
Hypothesis Five
- H0: There is no significant difference in the suitability of innovative and conventional building methods for construction projects.
- H0: There is a significant difference in the suitability of innovative and conventional building methods for construction projects.
1.7 Significance of Study
The outcome of this research will provide construction professionals with useful information on the differences between innovative and conventional building processes. The study will also support government agencies in promoting construction practices that improve building quality, sustainability, and infrastructure development.
Furthermore, the study will help building owners and clients make informed decisions when choosing suitable construction methods based on cost, time, and quality requirements. It will also provide professionals with knowledge needed to evaluate different construction methods during project design and implementation.
Lastly, the study will serve as reference material for students and researchers conducting further studies in construction technology and management.
1.8 Scope of Study
The scope of this research is focused on the comparison of construction processes of innovative and conventional building methods. The study covers construction activities, project cost, completion time, material usage, quality control, and challenges associated with both methods.
The study will be carried out among selected construction companies and building professionals in Enugu State, Nigeria, with focus on construction projects handled by Enugu State Housing Development Corporation.
1.9 Limitations of the Study
During the course of this study, there were some problems encountered which stood as limitations to the research work. Some of the limitations include:
- Time Constraint: The time frame given to accomplish this project was very short due to school academic calendar and it was carried out under pressure which made the researcher not to implement some necessary features.
- Financial Constraint: Insufficient fund tends to impede the efficiency of the researcher in sourcing for the relevant materials, literature or information and in the process of data collection (internet, questionnaire and interview).
- Initial Cooperation Delay from Respondents: A particular limitation of this work came as a result of the respondent refusal to offer their cooperation at the initial time they were contacted. This contributed in making the success of this research study difficult.
1.10 Definition of Terms
Building Construction:
Building construction refers to the process of planning, assembling, and completing structures using materials, labour, equipment, and technical knowledge.
Innovative Building Process:
Innovative building process refers to modern construction methods that use advanced technologies, improved materials, and new techniques to improve construction efficiency.
Conventional Building Process:
Conventional building process refers to traditional construction methods that involve mainly manual activities carried out at the building site using common materials and established techniques.
Construction Process:
Construction process refers to the series of activities involved in transforming building designs into completed structures.
Modular Construction:
Modular construction is a building approach where sections of a structure are manufactured separately and joined together to form a complete building.
Prefabrication:
Prefabrication is a construction method where building components are produced in a controlled environment before being transported and assembled at the construction site.
Construction Technology:
Construction technology refers to the tools, equipment, materials, and methods used to improve building activities.
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