Author : Khaled Mahmoud Mohamed El-Gohary
Degree : M.Sc. Structural
Title: Improvement Measures of Construction Labor Productivity as
an Integrated Part of Construction Engineering and Management
Abstract:
Construction labor productivity is a
fundamental piece of information for estimating, budgeting and scheduling a
construction project. The current practice of construction labor productivity
estimation relies primarily on either published productivity data or an
individual’s experience. The impact of the various factors influencing
construction labor productivity is also neglected. Also, there is a lack of a
systematic approach to measuring and estimating construction labor
productivity. An investment for the sole purpose of productivity data
collection and modeling is not likely to be successful for a construction
company. To make the investment economically feasible, the system must be
integrated into the overall information system framework of a company.
Therefore, engineering of construction labor productivity is of critical
importance to ensure construction company’s profitability and competitiveness.
To address this issue, this research presents an Engineering approach, from
concept to detail, to identifying and ranking factors influencing construction
labor productivity, measuring construction labor productivity, collecting data
from proposed company database system, and developing predicting construction
labor productivity model considering relevant main factors affecting it. To
improve construction labor productivity one must identify and recognize the
influence of the main factors affecting it. Therefore, thirty factors affecting
construction labor productivity were identified based on the literature and
with cooperation of local experts. The factors are classified into three main
categories: Management related category, Labor related category, and Industry
related category. A core sample size of concerned participants was determined
statistically to rank the identified factors based on their relative importance.
The number of registered buildings contractors under the top four categories
(1,283 contracting companies) within the Egyptian Federation for Construction
& Building Contractors (EFCBC) was considered as a population guide to
determine the minimum required core sample size (297 contracting companies). A
questionnaire form was designed to get the opinions of all participants. The
total actual questionnaires number of this study is 489 (430 represent
contracting companies and 59 represent clients and consultants firms).
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