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

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 ob...

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Main Authors: Lukumon Oyedele, Babatunde Jaiyeoba, Moshood Fadeyi
Format: Article
Language:English
Published: UTS ePRESS 2012-11-01
Series:Australasian Journal of Construction Economics and Building
Online Access:https://epress.lib.uts.edu.au/journals/index.php/AJCEB/article/view/2916
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author Lukumon Oyedele
Babatunde Jaiyeoba
Moshood Fadeyi
author_facet Lukumon Oyedele
Babatunde Jaiyeoba
Moshood Fadeyi
author_sort Lukumon Oyedele
collection DOAJ
description 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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spelling doaj.art-72823ab3e34a4735a1e44091060893c52022-12-21T18:51:07ZengUTS ePRESSAustralasian Journal of Construction Economics and Building1835-63541837-91332012-11-0132253210.5130/ajceb.v3i2.29161885Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' PerceptionLukumon Oyedele0Babatunde Jaiyeoba1Moshood Fadeyi2National University of SingaporeObafemi Awolowo UniversityObafemi Awolowo UniversityVarious 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.https://epress.lib.uts.edu.au/journals/index.php/AJCEB/article/view/2916
spellingShingle Lukumon Oyedele
Babatunde Jaiyeoba
Moshood Fadeyi
Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' Perception
Australasian Journal of Construction Economics and Building
title Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' Perception
title_full Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' Perception
title_fullStr Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' Perception
title_full_unstemmed Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' Perception
title_short Design Factors Influencing Quality of Building Projects in Nigeria: Consultants' Perception
title_sort design factors influencing quality of building projects in nigeria consultants perception
url https://epress.lib.uts.edu.au/journals/index.php/AJCEB/article/view/2916
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