Investigating the Causes and Effects of Material Wastage on Project Cost

CHAPTER ONE

1.1 Background of the Study

The construction industry is one of the largest consumers of natural resources, yet it also generates a significant amount of waste. Material wastage occurs when construction materials are damaged, over-ordered, or not efficiently used during the building process. According to Nagapan, Abdul Rahman, and Asmi (2012), material waste can account for between 5 and 15 percent of total project cost, depending on project type and management practices.

Material wastage is not only a financial problem but also an environmental one. It contributes to excessive resource depletion, landfill accumulation, and increased carbon emissions. Poor handling, inadequate supervision, inaccurate quantity estimation, and design changes are among the common causes of material waste (Ekanayake & Ofori, 2004). These issues lead to higher project costs, longer construction time, and lower profit margins.

Quantity surveyors play a key role in minimizing material waste through accurate estimation, cost planning, and monitoring of material usage. Effective waste management requires collaboration among contractors, suppliers, and consultants to ensure that materials are efficiently procured and utilized (Osmani, 2013).

This study investigates the causes and effects of material wastage on project cost. It also explores how better management strategies can help improve cost efficiency and promote sustainable construction.

1.2 Statement of the Problem

Material wastage remains a persistent challenge in the construction industry. Despite technological advances and professional expertise, many projects experience excessive material loss. Poor planning, inadequate storage, and low-skilled labor often result in unnecessary wastage (Nagapan et al., 2012).

This waste increases total project costs and reduces the competitiveness of contractors. Moreover, it contributes to environmental degradation and resource scarcity. While several studies have examined waste management, there is still limited understanding of how specific causes of material wastage affect project cost outcomes. Therefore, this research seeks to analyze the major causes and effects of material wastage and suggest practical measures to reduce it.

1.3 Aim and Objectives of the Study

The main aim of this study is to investigate the causes and effects of material wastage on project cost.

The specific objectives are to:

1. Identify the major causes of material wastage in building construction projects.

2. Examine the effects of material wastage on overall project cost.

3. Assess the role of quantity surveyors in controlling material waste.

4. Recommend effective strategies for minimizing material wastage in construction projects.

1.4 Research Questions

1. What are the major causes of material wastage in construction projects?

2. How does material wastage affect project cost and delivery?

3. What role do quantity surveyors play in controlling material waste?

4. What strategies can effectively reduce material wastage in building projects?

1.5 Significance of the Study

This study is significant because it highlights the relationship between material wastage and cost escalation in construction projects. It provides practical insights for quantity surveyors, contractors, and project managers to improve material management practices. According to Ekanayake and Ofori (2004), proper waste management contributes to cost savings and enhances sustainability in construction.

The findings will also help policymakers and industry regulators develop guidelines for waste reduction. Academically, the study contributes to the growing body of research on construction waste management and cost control.

1.6 Scope of the Study

The study focuses on material wastage in building construction projects, covering both public and private sectors. It considers causes related to design, procurement, storage, and site management. The research targets quantity surveyors, contractors, and site engineers involved in material management and cost control.

1.7 Limitations of the Study

The study may face limitations such as difficulty obtaining accurate data on material usage and wastage, as many contractors do not maintain detailed records. Time constraints and limited access to ongoing projects may also restrict data collection. Nevertheless, the study will rely on reliable sources and professional opinions to ensure valid results.

1.8 Definition of Terms

• Material Wastage: The loss of materials due to damage, misuse, or inefficiency during construction activities (Nagapan et al., 2012).

• Cost Overrun: The excess of actual project cost over the estimated or budgeted cost.

• Waste Management: The systematic process of reducing, reusing, and recycling construction materials to minimize environmental impact.

• Quantity Surveyor: A professional responsible for cost estimation, budgeting, and financial control in construction projects.