The Roles of Construction Professionals in the Nigeria’s Construction Industry

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IOSR Journal Of Humanities And Social Science (IOSR-JHSS)
Volume 19, Issue 11, Ver. VIII (Nov. 2014), PP 05-10
e-ISSN: 2279-0837, p-ISSN: 2279-0845.
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The Roles of Construction Professionals in the Nigeria’s
Construction Industry
Olanrewaju Sharafadeen Babatunde Owolabi1, Akinpelu Samuel Olatunji2
Department of Building Technology, School of Environmental Studies, The Federal Polytechnic, Ado Ekiti, Ekiti
State, Nigeria.
Abstract: The study traced the history of construction industry, surveyed its development at the present time
and described the intensity of competition and roles of each professional among the existing professionals in the
Nigeria’s construction industry. Data for the study were collected through well-structured questionnaire
directed to construction professionals in the private and public sectors. Data collected were analyzed using
frequency distribution table and relative significance index. It revealed that the roles of the Architect are to
produce detailed working drawings and specifications (93% significance). The roles of the Builders are to
ensure the adequate preparation of project health and safety (94% significance), preparation of construction
methodology (93%), preparation of construction programme (90%), and preparation of project quality and
management (86%). The Estate surveyors and Valuers are to prepare the valuation of construction works (91%
significance), preparation of feasibility and viability appraisal of construction projects (81%), and Construction
project management (70%). The Engineer on the other hand is to calculate the load and stresses that the
structure can safely withstand (99% significance). The Land Surveyor performs building location survey (96%
significance), Provides site plan (73%), Foundation location (69%), and Prepare construction layout (67%).
Furthermore, the Town planner’s roles are to prepare Road utility design survey (95% significance), Design
layout and draft design statement (94%), and Protect environment and architectural heritage (89%). The roles
of the Quantity surveyor are to prepare bill of quantities (100% significance), Estimate cost relating to
construction materials, time and labour and cost advise (94%), Variation of work in progress and materials on
site for interim payment (87%), The study recommended that there should be strict regulations and
implementation of laws by the body of each profession guiding against function overlap among the professionals
in the construction industry.
I. Introduction
The building construction industry is as old as human civilization itself. The history of the industry
evolves with evolution of human settlements and culture. It has its different feature in each age of human
existence namely agrarian, industrial and information ages.
As such the building construction industry has over time, in an attempt to overcome evolving
challenges as a result of increasing complexity of human settlement( town, country, city, megacity), culminated
into specialization that seek to enhance efficiency and economical service delivery in the industry.
[1] reports that construction is one of the most important activities of any economy and a large
proportion of the country‟s resources are usually used in the construction and maintenance of building. The
construction sector in Nigeria accounts for 3-8% of Gross Domestic Product (GDP), about 5% of the labour
force, 40-70% of the gross fixed capital formation and about 12% of industrial sector production [2]. This
enormous amount of wealth is managed or generated by the construction industry through the various
contributions of its professional members. [3] ascertained that the construction industry is a viable sector in the
economy of any country.
The present state of construction industry is complex. There is a wide range of construction products
and system which are aimed primarily at groups of infrastructure types or markets. The design process for an
infrastructure is highly organized and draws upon research establishments that study materials properties and
performance, codes officials who adopt and enforce safety standards, and design professionals who determine
user needs and design variety of infrastructure and facility to meet those needs. The construction process is also
highly organized; it includes the manufacturers of construction products and system, the craftsmen, the
contractors and consultants who specialize in such aspects as construction management, quality control, and
insurance.
Construction industry plays a substantial role in a country‟s economy, irrespective of the country‟s
level of development. The construction sector in a country‟s economy is an important employer of a nation‟s
workforce as it employs between 2 to 10% of total workforce of most countries [4]. Nigeria had gained an
impressive economic growth during the last decades. The construction industry plays an important role in the

The Roles of Construction Professionals in the Nigeria’s Construction Industry
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transformation of the physical terrain of any nation in its march toward greater civilization and economic
independence. It is also concerned with the assimilation and utilization of exogenous development in
technology, management sciences and related sciences to enhance building performance to win the world over
[5]. II. Literature Review
The construction of a building project of any kind involves the services of many people, directly, who
design, construct and maintain it from inception to completion, and to terminal demolition [6]. It is important to
understand the term “profession” before discussing the issue of professionalism in depth. [7] defined profession
as an occupation requiring extensive education i.e. an occupation that requires extensive education or
specialized training. Profession is a skilled occupation, usually one requiring specific education, training,
knowledge or experience [8].
According to [9], the essence of the word “professionalism” can be defined as the possession and
autonomous control of a body of specialized knowledge, which when combined with honorific status, confers
power upon its holders.[7] described professionalism as the professional standards that involved the skill,
competence, or character expected of a member of a highly trained profession. Professionalism can also be
defined as professional standards involving the exercising of body of unique, expert and knowledge.
Professionals have always been linked with the notion of “service” so that a professional is described as a group
of people organised to serve a body of specialized knowledge in the interests of society based on the perceived
relationship [10]. [11] stated that professional is automatically tied up with more practical concepts and
expectations from the public, encompassing issues such as competence, responsibility and willingness to serve
the public. [12] feels that the problem that faces any professional community is how it could regulate itself
effectively to justify its autonomy, while ensuring that the clients of its members and society as a whole benefit
from the profession‟s and the individual professional‟s actions, rather than becoming their victims. It is one of
the ethical quality control. Construction industry plays a substantial role in a country‟s economy, irrespective of
the country‟s levels of economic development [13]. The construction sector in a country‟s economy is an
important employer of a nation‟s workforce as it employs between 2 to 10% of total workforce of most
countries [4]. Nigeria had gained an impressive economic growth during the last three decades.
Therefore the list of the professionals actively involved in the construction industry includes but not
limited to, Architects, Builders, Estate surveyors and valuers, Land surveyors, Quantity surveyors, Town
planners, Civil, Electrical, Mechanical and Structural Engineers. To achieve the purpose of this study, seven of
these professionals were selected; they include the architect, builder, estate surveyor and valuers, engineer land
surveyor, town planner and quantity surveyor.
Construction industry everywhere faces problem and challenges. These difficulties and challenges are
present alongside a general situation of institutional weakness, professional rivalry among others. Many topic
issues which have implications for the construction industry have, so far, only been discussed to a significant
extent.
III. Methodology
The study population comprised the construction professionals in the private and public service in the
Nigerian construction industry. This involved assessing professional views. The study deals with the roles of
construction professionals in the Nigeria construction industry. Two hundred (200) questionnaires were directly
distributed with the intention of eliciting response from the public and private organisations toward determining
the roles of construction professionals in carrying out construction project.
The Likert scale involving rating on interval scale of 5 and 1 developed for application in social science
and management research for quantification of qualitative variable was used for the data collection.
The statistical tools used for analysis include percentage, mean, and relative significance index (RSI).
The relative significance ranking (RSI) was used for ranking of the factors studied. These methods have been
used in construction research by authors such as, [14], [15], [16], [17], [18] among others.
The responses of the items on the questionnaire were obtained on a 5-point scale ranging from 1 to 5.
„„Strongly Agree‟‟ were scored 5, „„Agreed‟‟ were scored 4, „„Undecided‟‟ were scored 3, „„Disagreed‟‟ were
scored 2 and „„Strongly Disagreed‟‟ were scored 1.
Relative Significance Index (RSI) is a non-parametric technique based on the aggregate weighting of
the initial frequency score of factors. The Relative significance index was computed as
Where:
ni = the number of respondents choosing ki = 1 -5 on the Likert scale;

The Roles of Construction Professionals in the Nigeria’s Construction Industry
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∑N = the total of questionnaire collected (sample size);
j = the highest value in ranking order;
N = the total number of responses.
IV. Data analysis and results
The data obtained are hereby analysed and the results presented. The analysis tools include both the descriptive
and inferential.
4.1 Respondents’ profile
Table 1 shows the professional qualifications of respondents. The respondents cut across various
professional qualifications such as ARCON, CORBON, ESVRBON, COREN, SURCON, TOPREC, QSBORN,
and other related professional qualifications
Table 1: Professional qualification
Qualification
Frequency
Percentage
ARCON
CORBON
ESVRBON
COREN
SURCON
TOPREC
QSRBN
22
26
20
23
19
21
24
11.00
13.00
10.00
11.50
9.50
10.50
12.00
Others
45
22.50
Total
200
100.0
Table 2 shows the academic qualifications of respondents. 45 percent of the respondents have Higher National
Diploma (HND) degree, 15 percent have Post-graduate Diploma (PGD) degree, 12.50 percent have Bachelor of
Science (B.Sc.) degree, 10 percent have Bachelor of Engineering (B.Eng.) degree, 10 percent have National
Diploma (ND) degrees and 7.50 percent have Masters (M.Sc.) degree.
Table 2: Academic qualifications
Qualification
Frequency
Percentage
B.Eng
20
10.00
B.Sc.
25
12.50
HND
90
45.00
M.Sc.
15
7.50
ND
20
10.00
PGD
30
15.00
Total
200
100
Table 3 shows the post held by respondents in their respective organizations. It showed that 21 percent are
Builders/Estimators, 20 percent are Lecturers, 19 percent are Managers, 17.50 percent are Engineers, 12.50
percent are Quantity surveyors and 10 percent are Technical officers in the organisations.
Table 3: Post held
Post
Frequency
Percentage
Engineer
35
17.50
Builder/Estimator
42
21.00
Manager
38
19.00
Lecturer
40
20.00
Technical Officer
20
10.00
Quantity Surveyor
25
12.50
Total
200
100
4.2 Roles of professionals in the Nigeria`s construction industry
4.2.1 Architect
Table 6 identified the various roles of an architect among the professionals in the construction industry and the
ranking of the factors through the use of Relative Significance Index (RSI).
Table 6: Roles of the architect in the Nigerian construction industry
Roles
1
2
3
4
5
Total
TWV
RSI
Rank
Preparing application for planning and building control
10
25
10
25
130
200
840
0.84
3
Producing detailed working drawing and specification
0
5
0
60
135
200
925
0.93
1
Cost analysis and land-use study
15
120
45
10
10
200
480
0.48
5
Turning the client brief into drawing
0
5
5
60
130
200
915
0.92
2
Final construction plans
0
5
45
90
60
200
805
0.81
4

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The survey revealed that Producing detailed working drawing and specification ranked first with RSI
value of 0.93 (i.e. 93 percent significance) among the roles of the architects in the Nigerian construction
industry. Turning the client brief into drawing ranked second with RSI value of 0.92. Preparing application for
planning and building control ranked third with RSI value of 0.84. These are followed by Final construction
plans (0.81), and Cost analysis and land-use study (0.48). The result also showed that all the roles are significant
with the least role having 48 (0.48) percent significance.
4.2.2 Builders
Table 7 investigated the various roles of the Builders among the professionals in the construction
industry and the ranking of the factors through the use of Relative Significance Index (RSI).
Table 7: The roles of the builder in the Nigerian construction industry
Roles
1
2
3
4
5
Total
TWV
RSI
Rank
Preparing construction programme
0
5
35
20
140
200
895
0.90
3
Preparing of project health and safety plan
0
10
10
15
165
200
935
0.94
1
Preparing construction methodology
0
0
0
75
125
200
925
0.93
2
Preparing of project quality management plan
0
35
0
35
130
200
860
0.86
4
This analysis revealed that Preparation of project Health and Safety plan ranked first with RSI value of
0.94 (i.e. 94 percent significance), Preparing construction methodology ranked second with RSI value of 0.93,
Preparing construction programme ranked third with RSI value of 0.90, and Preparation of Project Quality
Management plan ranked fourth with RSI value of 0.86. The result also showed that all the roles are significant
with the least role having 86 (0.86) percent significance.
4.2.3 Estate surveyors and valuers
Table 8 identified the various roles of an estate surveyor and valuers among the professionals in the construction
industry and the ranking of the factors through the use of Relative Significance Index (RSI).
Table 8: The roles of the estate surveyors and valuers in the Nigerian construction industry
Roles
1
2
3
4
5
Total
TWV
RSI
Rank
Valuation of construction work
0
0
35
25
140
200
905
0.91
1
Construction project management
15
45
40
25
75
200
700
0.70
3
Preparing feasibility and viability appraisal of
construction project
0
35
20
45
100
200
810
0.81
2
The roles of the estate surveyors and valuers in the Nigerian construction industry revealed that
Valuation of construction work ranked first with RSI value of 0.91 (i.e. 91 percent significance), Preparing
feasibility and viability appraisal of construction project ranked second with RSI value of 0.81, and Construction
project management ranked third with RSI value of 0.70. The result also showed that all the roles are significant
with the least role having 70 (0.70) percent significance.
4.2.4 Engineers
Table 9 identified the various roles of an engineer among the professionals in the construction industry and the
ranking of the factors through the use of Relative Significance Index (RSI).
Table 9: Relative Significance Index (RSI) of the roles of the engineers in the Nigerian construction
industry
Roles
1
2
3
4
5
Total
TWV
RSI
Rank
Calculation of load and stresses the construction will safely
withstand
0
0
5
10
185
200
975
0.98
1
Factorizing the qualities and strength of building materials
0
10
0
95
95
200
875
0.88
4
Incorporating structural members and foundation
0
30
10
60
100
200
830
0.83
5
Determining the suitability of the earth for construction
0
10
70
45
75
200
785
0.79
6
Organization and delivery of materials and equipment for
construction
5
85
40
10
60
200
635
0.64
7
Management and supervision of on-site labour
15
65
50
20
50
200
630
0.63
8
Installing and maintain mechanical machinery, tool and
component in a building
0
5
5
5
185
200
970
0.97
2
Installing and maintaining electrical control system
0
10
0
40
150
200
930
0.93
3
The roles of engineers in the Nigerian construction industry revealed that Calculation of load and
stresses the construction will safely withstand ranked first with RSI value of 0.99 (i.e. 99 percent significance),
Installing and maintain mechanical machinery, tool and component in a building ranked second with RSI value
of 0.97, and Installing and maintaining electrical control system ranked third with RSI value of 0.93. These are
followed by Factorizing the qualities and strength of building materials (0.88), Incorporating structural members
and foundation (0.83), Determining the suitability of the earth for construction (0.79), Organization and delivery

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of materials and equipment for construction (0.64), and Management and supervision of on-site labour (0.63).
The result also showed that all the roles are significant with the least role having 63 (0.63) percent significance.
4.2.5Land surveyors
Table 10 identified the various roles of land surveyors among the professionals in the construction industry and
the ranking of the factors through the use of Relative Significance Index (RSI).
Table 10: Relative Significance Index (RSI) of the roles of the land surveyors in the Nigerian construction
industry
Roles
1
2
3
4
5
Total
TWV
RSI
Rank
Building location survey
0
0
5
30
165
200
960
0.96
1
Foundation location
15
40
40
50
55
200
690
0.69
3
Preparing construction layout
10
75
25
30
60
200
670
0.67
4
Providing proposed site plan
10
45
50
25
70
200
730
0.73
2
The roles of land surveyors in the Nigerian construction industry and revealed that Building location
survey ranked first with RSI value of 0.96 (i.e. 96 percent significance), Providing proposed site plan ranked
second with RSI value of 0.73, Foundation location ranked third with RSI value of 0.69, and Preparing
construction layout ranked fourth with RSI value of 0.67. The result also showed that all the roles are significant
with the least role having 67 (0.67) percent significance.
4.2.6 Town planners
Table 11 identified the various roles of town planners among the professionals in the construction industry and
the ranking of the factors through the use of Relative Significance Index (RSI).
Table 11: Relative Significance Index (RSI) of the roles of the town planners in the Nigerian construction
industry
Roles
1
2
3
4
5
Total
TWV
RSI
Rank
Designing layout and drafting design statement
0
5
5
45
145
200
940
0.94
2
Protecting environment and architectural heritage
0
5
35
40
120
200
890
0.89
3
Road utility design survey
5
5
5
20
165
200
950
0.95
1
The roles of town planners in the Nigerian construction industry and revealed that Road utility design
survey ranked first with RSI value of 0.95 (i.e. 95 percent significance), Designing layout and drafting design
statement ranked second with RSI value of 0.94, and Protecting environment and architectural heritage ranked
third with RSI value of 0.89. The result also showed that all the roles are significant with the least role having 89
(0.89) percent significance.
4.2.7 Quantity surveyors
Table 12 identified the various roles of quantity surveyors among the professionals in the construction industry
and the ranking of the factors through the use of Relative Significance Index (RSI).
Table 12: Relative Significance Index (RSI) of the roles of the quantity surveyors in the Nigerian
construction industry
1
2
3
4
5
Total
TWV
RSI
Rank
Preparing bill of quantity
0
0
0
5
195
200
1000
1.00
1
Schedule of materials of building of project
5
30
15
75
75
200
790
0.79
4
Estimate cost relating to construction materials, time and
labour and cost adviser
0
5
0
45
150
200
940
0.94
2
Variation of work in progress and materials on site for
interim payment
0
5
30
60
105
200
870
0.87
3
Cash flow payment
15
45
20
50
70
200
760
0.76
5
The roles of quantity surveyors in the Nigerian construction industry revealed that Preparing bill of
quantity ranked first with RSI value of 1.00 (i.e. 100 percent significance), Estimate cost relating to construction
materials, time and labour and cost adviser ranked second with RSI value of 0.94, Variation of work in progress
and materials on site for interim payment ranked third with RSI value of 0.87, Schedule of materials of building
of project ranked fourth with RSI value of 0.79, and Cash flow payment ranked fifth with RSI value of 0.76.
The result also showed that all the roles are significant with the least role having 76 (0.76) percent significance.
V. Discussion of findings
This paper presented the findings of the analysis of the questionnaires distributed to professionals in the
construction industry to analyse the roles of the various professionals in the construction industry.
Every professional within the industry is an emphatic specialist in his field and should be considered as
such. Construction is a team work. Each professional contributes his knowledge as a part of the whole for a

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successful building production. The construction of a building project of any kind involves the services of many
people, directly, who design, construct and maintain it from inception to completion, and to terminal demolition.
Construction is one of the most important activities of any economy and a large proportion of the country‟s
resources are usually used in the construction and maintenance of building. This is in agreement with the
position of Fadamiro and Ogunsemi, (1996), Mu‟azu (2002), and Omole (2000).
VI. Conclusion
The major role of construction professionals in the Nigeria‟s construction industry among professionals
as identified by this research and it is noticeable among professionals within the industry. The professional
standards include skill, competence, or character expected of a member of a highly trained persons and
professional encourage the use of professionals instead of amateurs. The interplay of the forces of mutual
understanding among the professionals could encourage the team spirit, a necessary parameter, in the successful
execution of a project within the planned project duration. The in itself could have its added advantages to
encourage the professionals to increase their productivities.
VII. Recommendation
The government of the Federal Republic of Nigeria established Councils for the regulation of the
practice areas of the distinct professional bodies within the construction sector. The specific functions, duties
and responsibilities were well spelt out. The study recommended that there should be strict regulations and
implementation of laws by the body of each profession guiding against some particular overlapping among
professionals in the construction industry.
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