ABSTRACT
This research studied “evaluating the effectiveness of
project delivery methods in South-East Nigeria”. There are alternatives
delivery methods for executing a project, the choice of selection are mostly
done on familiarity bases, which is purely subjective and may not offer a
better approach to optimize the overall success of the project. An extensive
review of literatures in relation to the study was made with respect to text
and similar work done by other scholars. The choice of a delivery method of a
project needs to be subjected to a proper evaluation, with respect to the key
pertinent issues (client objectives). The types of project delivery methods was
sieved first through an extensive literature review; and about Nine (9) methods
were identified. An evaluation on the delivery method is further carried out
using related literatures. Eleven (11) pertinent issues (client and project
objectives) were used to assess how effective a delivery method responds to a
pertinent issue. A field survey was futher carried out to generate reactions
from experienced professionals in the industry, this was achieved by first
conducting a pilot study to enable determine those factors or issues that
actually affects a project in the course of its delivery. A total of ten (10)
respondents were randomly selected from the parent population using an
open-ended question. The first ten (10) issues or factors that had the highest
percentages of occurrence or frequencies from their responses were futher used
as the major issues to evaluate the delivery methods. However Time, Cost, and
Quality were the issues with the highest frequencies. The field survey was
conducted in four (4) South-Eastern states in Nigeria, a population of one
hundred and fifty (150) respondents
was used for the study, their responses were used in generating of the data
needed for the evaluation. The data generated were analyzed using frequency
tables, simple percentages, mean scores, and z-test. The result obtained was
futher used in evaluating and ranking the delivery methods, using the Spearman
Rank Correlation Analysis. The evaluation reveals that Time, Cost, and Quality
are three close-ended interdependent issues, which borders on every project.
Some delivery methods respond positively to any of these issue, but yet,
negatively to any of them at the same time. Hypothetical testing among these
three (3) key issues was conducted to see if there is any significant
relationship among them in evaluating a delivery method using the z-test. The
result revealed that time, and quality has a significant relationship, which
could be either positive or negative; cost and quality equally have a
relationship, but time and cost has no significant relationship in evaluating a
delivery method. However the result of findings was used in the summary and
recommendation. However no project delivery method can be said to possess all
the advantages required in a project with respect to the pertinent issues. But
a project should be subjected to a full and proper evaluation before selecting
a particular method.
CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND OF STUDY
The construction industry is
one of the important Economic Sectors especially in a developing country like
Nigeria, Infact, no sector of the economy can develop effectively without
infrastructural facilities e.g. building, roads etc. Osofisan (2007), states
that “in many developing countries like Nigeria, the construction sector to
which the building industry belongs is one of the biggest contributors to the
Gross National Product (GNP)”. She further concluded that “Similarly, it has
been noted that in some developed countries, more than 16 percent of their GNP
is devoted to the construction industries”. The construction sector is a
sub-sector of the economy that creates basic infrastructure needed to
accommodate inputs of all other sectors. That’s is why construction products are
regarded as the essential of life and economic development.
However, inspite of the
importance of the industry, construction projects are complicated, parallel,
dynamic in nature, and are faced with a lot of problems especially in Nigeria.
Construction projects, therefore, require adequate and effective project
delivery methods. Consequently clients/owners of construction projects are
often bothered with diverse needs in their projects. In order to accommodate
these differing needs, various methods for contractual relations have evolved;
these various methods are referred to as “project delivery methods”. A project
delivery method could be defined as a system designed and packaged to
effectively and collectively bring together the owners intentions and the
project scope definition in relation to the design and construction issues, in
order to be effectively managed by the construction industry participants
However, in the early 1980s,
owners of construction projects have been putting greater pressure on the
construction industry to improve quality, reduced cost and more importantly,
compress the period from project conception to project completion for all kinds
of public and private projects. As a result, both owners and the industry have
been experimenting with various forms of project delivery methods with varying
degrees of success, as even new methods yet to be experimented are discovered.
However, without effective project delivery methods, construction projects may
be abandoned.
1.2 STATEMENT OF PROBLEM
Construction projects differ
from each other, infact two projects with the same design still differ and this
is one of the attributes of the industry. Construction projects are unique and
thus, exhibit certain characteristics which is different from every other
sector of the economy; Therefore, construction projects should be subjected to
a proper evaluation of the available alternative methods of its delivery in
relation to the owners interest and the scope of the project, considering also
other pertinent issues because ineffective project delivery method could lend
to
§
Abandonment of project
§
Cost-overrun of project
§
Delay in project completion time
§
Less quality product
§
Lack of technology input
§
Disallowance of flexibility and
innovation
§
Multiple construction contracts
§
Increased adversarial relationship
§
Reduction of possibility of
competition
§
Increase in life cycle cost etc.
The uniqueness of every project
has reduced the chance of selecting like projects and executing them with the
same method. Most selections of alternative methods are done based on a
previously used method and this reduces the chance of achieving maximum success
for many projects. And these have led to some of the above listed problems
1.3 AIM AND OBJECTIVES OF STUDY
The
aim of this study is to evaluate how project delivery methods are used in the Nigerian
construction industry, with the following objectives:
1.
To find out various types of
projects delivery methods used in the construction industry.
2.
To evaluate the effectiveness of
various project delivery methods.
3.
To identify the factors influencing
the choice of project delivery methods
4.
To recommend suitable alternative
project delivery methods.
5.
To find out if the size of a project
could affect the choice of its delivery.
6.
To find out if evaluation is usually
carried out on most project before selecting a particular method of delivery.
7.
To investigate the degree of
relationship between/among the three (3) key issues (i.e cost time and quality)
and their behaviour in selecting a delivery method.
1.4
SCOPE AND LIMITATIONS OF STUDY
The
scope of this study comprised of response from professionals in the
construction industry and type of project for this study will be limited to projects
in four (4) South-Eastern States in Nigeria i.e. (Anambra, Abia, Enugu and
Imo).
1.5 SIGNIFICANCE OF STUDY
This study will guide project
owners or construction proponents in selecting an appropriate delivery method
for their construction projects in order to ensure the overall performance of
the project.
It will also help professionals
to advice and guide their clients, by helping them to point out issues which
ought to be considered when evaluating and selecting a delivery method.
It will also assist government
agencies in defining project requirements for a successful delivery of project,
especially on capital projects.
Also, in the improvement of
knowledge in differentiating a project delivery method, a project management
method and a contract type or format.
1.6 RESEARCH
QUESTIONS
The
following research questions form the basis of this study:
1.
What are the types of project
delivery method used in the construction industry?
2.
Which factor(s) influences the
choice of a project delivery method?
3.
How effectively does a project
delivery method responds to client objectives and project requirements?
4.
Which delivery method(s) could be
recommended to construction proponent towards achieving their objectives?
5.
Does the size (cost) of a project
affects the choice of its delivery?
6.
Are evaluations usually carried out
on most projects before the selection of its method of delivery?
7.
Is there any relationship between
cost, time, and quality in evaluating a delivery method?
1.7 RESEARCH HYPOTHESIS
The
following hypothesis shall be subjected to empirical evidence based on the data
collected
1.
Ho: Time
and Quality has no significant relationship in the evaluation of a
project delivery method.
H1: Time
and Quality has a significant relationship in the evaluation of a project
delivery method.
2.
Ho: Time
and Cost has no significant relationship in the evaluation of a project
delivery method.
H1: Time
and Cost has a significant relationship in the evaluation of a project delivery
method.
3.
Ho: Cost and Quality
has no significant relationship in the evaluation of
a
project delivery method.
H1: Cost
and Quality has a significant relationship in the evaluation of a project
delivery method.
================================================================
Item Type: Project Material | Size: 112 pages | Chapters: 1-5
Format: MS Word | Delivery: Within 30Mins.
================================================================
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.