AN APPRAISAL OF PREQUALIFICATION CRITERIA USED FOR CONTRACTORS SELECTION IN PUBLIC BUILDING PROJECTS IN NIGERIA
AN APPRAISAL OF PREQUALIFICATION CRITERIA USED FOR CONTRACTORS SELECTION IN PUBLIC BUILDING PROJECTS IN NIGERIA
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Date
2012-12
Authors
VICTORIA, HASSANA JIYA
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Abstract
The research was carried out to appraise contractors’ prequalification criteria used by public
organizations for building projects, for the last six years (2006-2011). Field survey involving ten
public organizations in Kaduna was conducted. Data were collected with the aid of structured
questionnaires. 60 questionnaires were distributed to construction professionals/ staff of which
55 responses were returned and 50 used for analysis. Information gathered include the major
contractors’ prequalification criteria and the sub contractors’ prequalification criteria used to
asses contractors on building construction works. The relative importance index (RII) was used
to compute the mean score of the contractors Prequalification criteria in relation to the overall
responses on a criterion were calculated. The research discovered that technical capacity with
over 58% of the professionals considered it important among the major prequalification criteria.
Health and safety is not appreciated, only 4% of the professionals considered it important.
‘Similar projects executed’ among the sub contractors’ prequalification criteria, with over 60%
responses considered it very important and Experience Modification Rating with only 8%
responses considered it very important. The study further collected data from 30 contractors’
prequalification check lists of completed public building projects. This was to check the
significant agreement between percentage score allocation to the criteria. Kendall’s test of coefficient
of concordance, was used to compare ranking of common variables with score rate
allocation obtained from sum scores. The result shows W value of 0.14 and test of significant of
16.15 agreement, which means, there is significant agreement in some percentage score
allocation to criteria from the public organizations. Public organizations placed less emphasis on
some contractors’ prequalification criteria on the checklist. The study recommends that,
professionals/ staff should aspire to understand, adopt and implement the requirements of
contractors’ prequalification criteria of building works. The public organizations should
standardize respective building construction prequalification practices in putting into
consideration all criteria on contractors’ prequalification checklist with percentage score
allocation to each criterion.
Description
A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL,
AHMADU BELLO UNIVERSITY, ZARIA
IN PARTIAL FULFILMENT FOR THE AWARD OF THE DEGREE OF
MASTER OF SCIENCE (M.Sc) CONSTRUCTION MANAGEMENT
DEPARTMENT OF BUILDING,
FACULTY OF ENVIRONMENTAL DESIGN,
AHMADU BELLO UNIVERSITY, ZARIA,
NIGERIA.
DECEMBER, 2012
Keywords
APPRAISAL,, PREQUALIFICATION CRITERIA,, USED,, CONTRACTORS,, PUBLIC BUILDING,, NIGERIA,