Page 121 - ASBIRES-2017_Preceedings

IDENTIFICATION OF FACTORS AFFECTING FOR DELAYING WATER & WASTE WATER TREATMENT
PLANT CONSTRUCTION PROJECTS: A CASE STUDY OF A SRI LANKAN COMPANY

Client’s problems and Communication water treatment projects in each province in
problems. Sri Lanka.
Primary data was collected using
questionnaire. Secondary data was gathered
from company records. Next, the internal
consistancy of the questionnaire was tested
using Cronbach’s alpha value. Then, the
multiple regression model was fitted to data
to find the significant impact of each of ten
factors on dependent variable since it is
continuous. Stepwise regression method was
used to fit the model and then residuals were
analysed to check the adequacy of the fitted
model and VIF value were analysed to
check the multicolinearity among Figure 1: Locations of projects
independent variables. Finally, based on It is clear from the figure that the

results, the study recommended some highest number of plants were installed in

feasible alternative solutions to reduce the North Central province which is 28.07%.
number of delaying days of construction of On the other hand, least number of water
water treatment projects.
treatment plants can be seen in Central

4 DATA COLLECTION AND province with 1.75 % of plants in Sri Lanka.
ANALYSIS The percentages of WT and WWT plants in
some provinces in Sri Lanka is shown in
Questionnaire was used to collect the Figure 2. According to the Figure 2, the
primary data of 60 delayed projects recently highest number of WWT plants are
done in several companies. It was established in Western Province. This may
distributed among chemical engineers, be due to high population density and
projects coordinators, quantity surveyors industrialization zone in this province than
who directly interact / handle persons of other.
water and waste water treatment
departments of each project.
The ten factors which have been
considered as independent variables were
identified when observing steps of the
process from submitting quotation for water
or waste water treatment plant to
customer/client to handover the plant. This
questionnaire was consisted of Likert scale
questions related to steps which are
necessary to complete the project. Also
project management theory and experience
of managers were integrated to develop Figure 2: Percentage of water treatment and
questions. Fifty seven project details were wastewater treatment with respect to
received out of 60. selected provinces

5 RESULTS AND DISCUSSION On the other hand, in North Central and
Northern Province WT plants are higher
The following Figure 1, illustrates the than WWT because of geographical
percentages of water treatment & waste conditions their water quality is not up to the

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