Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' Perception

Lukumon Oyedele, Babatunde Jaiyeoba, Moshood Fadeyi


Various factors identified from the literature that caninfluence quality of building projects in Nigeria have beenstudied by means of questionnaire survey sent to architects,engineers and quantity surveyors in the industry. From atotal response of 107 consultants, the importance of eachfactor was obtained via severity and frequency responsesof the factors. Data analysis includes comparisons ofranking among consultants using severity, frequency andimportance indexes, correlation analysis, and percentagerank agreement factor (PRAF) to measure the agreement inthe importance ranking among the consultants.Correlation results between the professionals are architects/quantity surveyors (0.75), architects/engineers (0.21 ),and engineers/quantity surveyors (0.24). The percentagerank agreement factor (PRAF) shows that the five mostimportant factors affecting quality are 'design changes'(78.9%); 'inadequate involvement of other professionalsduring the design stage' (78.9%); 'insufficient andunrealistic constraints of project cost' (71.1 %); 'poor levelof commitment to quality improvement among designprofessionals' (63.2%); and 'making design decisions oncost and not value of work' (55.3%). The results of this studywould provide feedback for the clients, project and qualitymangers and all the consultants in the industry, so thateffective management of quality can be ensured from theconceptual-design stage of the project.

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Adams, 0. (1997). Contractor development in Nigeria: perceptions of contractor and professionals. Construction management and Economics, 15, 95-108.

Alarcon, L.F, & Ashley D, B, (1992), Project performance modeling: A methodology for evaluating project execution strategies. (Source Document 80). The University of Texas at Austin, The Construction Industry Institute, null

3 Andi and Minato T. (2003). Design documents quality in the Japanese construction industry: factors influencing and impacts on construction process. International Journal of Project Management, 21 (7), 537-546."

Arditi, D. and Gunaydin, H.M. (1997). Total quality management in construction process. International Journal of Project Management, 15 (4), 235-43,

5 BIyth, A. and Worthington, J, (2001). Managing the brief for better design. Spoon press, Taylor and Francis Group, New York,

Bourn, J. (2001), Modernising construction: Report by the Comptroller and Auditor General, HC 87 Session 2000-2001, 11 Januaty2001. Stationery Office, London null

7 Bresnen, M.J.; Haslam, CO.; Bryman, A.E, and Keil E.T. (1990). Performance on site and the buiiding client. Occasional Paper, 42. Chartered Institute of Building, Ascot

Building Research Establishment (BRE), (1982). Quality in Traditional Housing, An Investigation into faults and their Avoidance. BRE Garston.

Chan, A.PC. (1996). Quality assurance in the construction industry. Architecture Science Review, 39 (2), 107-12.

Chan, A. P C. and Tam, C. M. (2000). Factors affecting quality of building projects in Nigeria, International of Journal of Quality and Reliability Management, 17 (4/5), 423-441,

11 Chan, D. M. W. and Kumaraswamy M. M. (2002). Compressing construction durations: lessons learned from Hong Kong building projects, Internationa! Joumai of Project Management, 20(1), 23-35."

Construction Management Association of America (CMMA, 1999), Quality Management Guidelines 2000 Edition, CMMA, USA, null

13 Cross, N. and Clayburn-Cross, A. (1996). Observations of teamwork and social processes in design. In Analyzing design activity. Cross. N., Christiaans, H. and Dorst, K. (eds), J. Wiley and Sons, 291-317."

Docker, RB. (1991). Quality assurance standard: for the building and construction industry. South Australian Builder, March 15-17.

Dozzi, P, Hartman, F., Tidsbury, N.. & Ashrafi, R. (1996). More stable owner-contractor relationship. Journal of Construction Engineering and Management, ASCE, 122 (1), 30-35.

Elinwa, A.U., and Buba, S.A. (1993). Cost factors in Nigeria. Journal of Construction Engineering and Management, ASCE, 119(4), 698-713.

Elinwa, A.U. and Joshua, M. (2001). Time overrun factors in Nigeria construction industry. Journal of Construction Engineering and Management, ASCE, 127(5), 419- 25,

18 Emmitt, S, (1999). Arcfiitectural management in practice, Addison Wesley Longman, England."

Ferguson, 1. and Mitchell, E, (1986), Quality on site. B, T, Batsford Ltd. London, null

20 Gunaydin, H. M, (1995) TQM in the construction industry. MS thesis, Illinois Institute of Technology, Chicago, IL."

Hartkopf, V.; Loftness, V. and Mill, P.A.D, (1986). Integration for Performance, In R, D, Rush (ed, ). The Building Systems Integration l^andbook, Butterworths-Heineman, Boston, null

22 Hersey R and Blanchard, K, (1982). Management of Organizational Behavior: Utilizing human Resources, 4th ed, Prentice-Hall Intemational, Englewood Cliffs, NJ,

Hiyassat, M, A, S, (2000). Applying ttie ISO standards to a construction company: a case study. International Journal of Project Management, 18(4), 275-280.

Kometa, S.T., Olomolaiye, PO. and Harris F.C. (1994). Attribute of UK constnjction clients influencing project consultants' performance. Construction Management and Economics, 12 (5), 433-443,

25 Kubal, M, T, (1994), Engineered Quality in Construction. McGraw-Hill, New York."

Liu, A, M, M, and Walker, A, (1998), Evaluation of project outcomes. Construction Management and Economics, 16, 209-19.

Love RE.D. and Irani Z. (2003). A project management quality cost information system for the construction industry. Information & Management, 40(7), 649-661.

Low, S.R (1992). Quality assurance: technical provisions and implementation for the Singapore construction industry. Building, Singapore Institute of Builders Journal, February, 22-32.

Lowe, S.R and Seymour, D. (1990). The quality debate. Construction management and Economics, 8 (1), 13-29.

Moser C.A. and Kalton G. (1971). Sun/ey methods in social investigation. Heinemann Educational, UK null

31 Naoum, S.G, (1991). Procurement and project performance. Occasional paper, 45. The Chartered Institute of Building, Ascot."

Naoum, S.G., and Mustapha, F.H. (1995). Influences of the client designer and procurement method on project performance. Proceedings of CIS W92 Symposium East meets West, 221-8.

National Economic Development Office (NEDO) (1987).

Achieving Quality on Building Sites, NEDO, London.

Nigerian Institute of Architects (NIA) (2000). Members' Directory, NIA, Lagos Nigeria.

Nigerian Institute of Quantity surveyors (NIQS) (2000). Members'Director, NIQS, Lagos Nigeria.

Nigeria Society of Engineers (NSE) (2001). Members' directory, NSE, Lagos Nigeria.

Okpala, D.C. and Aniekwu A.N. (1988). Causes of high costs of construction in Nigeha. Journal of Construction Engineering & Management 114 (2), 233-44.

O'Leary A.R (1992). Construction Administration in Architectural Practice. McGraw-Hill, Inc. USA.

Sanvido, V., Grobler F., ParfitL K., & Guvenis, M. (1992) Chtical success factors for construction projects. Journal of Constnjction Engineering and Management, ASCE, 118 (1), 94-111.

Sidwell, A.C. (1984). The time performance of construction projects. Architectural Science Review, 27, 85-91.

Sowers, G.E (1993). Human factors in civil and geotechnical engineering failures. Journal of Geotechnical Engineering, 119 (2), 238-56,

43 Walker, D.H.T. (1994). An investigation Into factors that determine building construction time performance. PhD thesis, Royal Melbourne Institute of Technology, Melbourne,

Walker D.H.T. (1998). The contribution of client representative to the creation and maintenance of good project inter-team relationships. Engineering, Construction and Architectural Management, 5(1), 51-7.,

Yates, J.K. and Aniftos, S. (1997). International standards and construction. Journal of Construction Engineering and Management, 123 (2) 127-137.