THE INFLUENCE OF CONTRACT DRAWING ON BUILDING PROJECT

TABLE OF CONTENTS

ABSTRACT

CHAPTER ONE

INTRODUCTION

1.1    BACKGROUND OF THE STUDY

1.2    PROBLEM STATEMENT

1.3    STUDY OBJECTIVES

1.4    SIGNIFICANCE OF THE STUDY

1.5    STUDY QUESTIONS/HYPOTHESES

1.6    SCOPE AND LIMITATION OF THE STUDY

1.7    DEFINITION OF TERMS

CHAPTER TWO

REVIEW OF RELATED AND RELEVANT LITERATURE

2.1    INTRODUCTION

2.2    CONCEPTUAL CLARIFICATIONS

2.3    THEORETICAL STUDIES

2.4    EMPIRICAL STUDIES

2.5    RELATED LITERATURES

CHAPTER THREE

RESEARCH METHODLOGY

3.1    RESEARCH DESIGN

3.2    STUDY AREA

3.3    SOURCES OF DATA

3.4    POPULATION OF THE STUDY

3.5    SAMPLE SIZE DETERMINATION

3.6    INSTRUMENTATION

3.7    RELIABILITY AND VALIDITY OF INSTRUMENT

3.8    METHOD OF DATA ANALYSIS

CHAPTER FOUR

DATA PRESENATATION, ANALYSIS AND INTERPRETATION

4.1    DATA PRESENTATION

4.2    DATA ANALYSIS

4.3    DATA INTERPRETATION

CHAPTER FIVE

SUMMARY, CONCLUSION AND RECOMMENDATION

5.1    SUMMARY

5.2    CONCLUSION

5.3    RECOMMENDATION

ABSTRACT

It has become a regular occurrence nowadays in which we find the project final cost that will overrun the contract sum originally set in contract document due to negligence in the part of the architect and the building professionals to provide enough drawings and information at both the pre-contract and post contract stage it is in light of this that we take up this research with title the influence of contract drawing on building project.

Research hypothesis was postulated and tested in the work using the chi square method.

This research has shown that The number of contract drawings used has effect on the building project final cost and that The number of contract drawings used has significant effect on the time overrun of a building project.

CHAPTER ONE

INTRODUCTION

1.1 BACKGROUND OF THE STUDY

Working /contract drawing according to Thomas and Marvin (1978), working drawings are defined to be a communication medium whose purpose is to graphically convey the design requirement for a construction project. They control the design by indicating the construction in considerable detail; if they are sufficiently detailed, a competent builder can construct the project in accordance with the design and without confusion. Nowadays, many building clients are curious of knowing their probable cost of having a particular building before the commencement of the work. However, the task of making the cost known to the building client entailed arrays of exercise to be done by the professionals involved, stating from the design stage up to the practical completion of the project, the design stage encompasses various activities, such as, the client brief, site investigation, skeletal design, construction design and finally the contract/working drawings which can be passed to the quantity surveyor and finally issued to the contractor.

These are expected to be the minimum numbers of drawings which give production information showing all relevant information’s from consultant transferred to agreed scale, exchanges details and exploiting the values of three dimensional sketches. The information is read to gather by the client, the estimator and the site agents. Seely (2008), believed that drawing should show the nature and scope of work to be carried out under the contract. They are to be detailed and comprehensive of bill of quantities. It is also to assist the contractor to accurately price and carry out the work satisfactorily. Drawings are expected to have description and explanatory notes clearly defined, legible and free from abbreviations amplified figured dimension should be inserted in the drawing to ensure maximum accuracy in taking off quantities and in setting out construction work on site.

Turner (2003), referred to the design and quality of the finished work as a major feature of the contract document. Contract drawings should show the positioning of the building members or a supplementary non-contract document. These contract drawings will include: architectural, structural and services.

1.2 STATEMENT OF RESEARCH PROBLEM

It has become a regular occurrence nowadays in which we find the project final cost that will overrun the contract sum originally set in contract document due to negligence in the part of the architect and the building professionals to provide enough drawings and information at both the pre-contract and post contract stage. This has posed so many problems on the neck of many clients, by offsetting their initial monetary budget. More so, many design practitioners has paid little attention to supply of contract drawings. Rather they belief in given instruction and description to the contractor on whatever they felt to be changed, added, omitted etc. in the progress of work, putting the essence of contract drawings behind.

Besides, it is obvious that many contract periods has been affected due to late or incomplete contract drawing or probably incomplete information on the contract drawing given to the contractor. This extends the client rental payment on borrowed properties due to late possession of their own building property. The above problems have contributed greatly to the differences between the initial cost (contract sum) and the project final cost caused by the building drawings; To contractor it lead to increment in the project and general overhead and reduces his profit, which to the consultants the running cost increment, stress and reduce the consultant prestige.

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