Key competencies for driving waste minimization at the construction stage of projects
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Date
2021-05-31
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Abstract
Competency is the knowledge, skills and attributes needed in an organization or area of
operation to enhance high productivity. Construction waste could also be defined as an
unusable or unwanted material at the construction site. There is low level of awareness on
key competencies that drive waste minimization at the construction stage of a project. The
awareness and the implementation of the various competencies that drive waste minimization
ensure proper collaboration among construction stakeholders as well as a positive attitude
towards waste minimization to enhance high productivity. This study was designed with the
aim to explore the key competencies that drive material waste minimization at the
construction stage of projects. An in-depth literature review and a pilot survey were done.
Through that, questionnaires were designed and administered to Public Procurement
Authority (PPA) registered construction firms in the Ashanti Region with much focus on
Construction Managers. Data generated from the field survey of a sample size of sixty-nine
(69) respondents was subjected to Relative Importance Index, Factor Analysis, and Kendall’s
Coefficient of Concordance. The findings of the study revealed Awareness Competency
(AC), Managerial Competency (MC), Personnel Ability Competency (PAC) and
Communication Competency (CC) as the key competencies that drive construction material
waste minimization. Poor Workmanship, Challenges arising from Transportation of
construction materials, and Poor Supervision were highly ranked as the causes of material
waste at the construction stage of projects while Increased purchased quanti0ty and price
cost, Poor site organization and obstruction of movement due to excessive waste generated,
and Lower business patronage were also ranked as the effect of construction material waste
variable in undertaking construction projects. A future study is thereby proposed by this study
to explore the role of construction professionals in material waste minimization.
Description
A Thesis submitted to the Department of Construction Technology and Management, Kwame
Nkrumah University of Science and Technology, Kumasi in partial fulfilment of the
requirements for the award degree of Master of Science in Construction Management,
Keywords
key competencies, construction material, waste minimization.