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IDENTIFICATION OF FACTORS AFFECTING FOR DELAYING WATER & WASTE WATER TREATMENT
PLANT CONSTRUCTION PROJECTS: A CASE STUDY OF A SRI LANKAN COMPANY
positively impact on delay of projects
whereas the other two factors negatively
impact.
Some alternative solutions are
suggested after doing feasibility study based
on time consumption, cost, resource
consumption and applicability to reduce
delay of construction of water and waste
water treatment projects. Those areto keep
thought with client for getting information
on work site status before starting the
project, to develop initial plan to improve
awareness of clients related to the company,
Figure 3: P-P plot of residuals to advice, motivate and guide sub-contractor
by giving technical knowledge and also
building up proper relationship between
company and sub-contractor, to prepare
project plan by considering climate changes
and other unavoidable reasons, to use well
prepared plan for import materials and
chemicals considering the availability of
employees, to select items correctly and to
give order in time by giving time to
manufacture requirement of the company,to
produce complete and accurate paperwork,
to deliver materials at once and correct
Figure 4: Residual vs fits materials to the sites, to install and costruct
water and waste water treatment plant under
the proper supervion and to keep proper
According the the P-P plot it can be communication with clients.
seen that most of the data point lie on the 5 CONCLUSION
straight line. This linearity of residuals
suggest residual are normally distributed. Water treatment and waste water
Residuals are randomly scattered around treatment projects are very important
zero in Figure 4 implied residuals have projects to conduct on time because clean
constant variance.This concludes that the water is a vital factor for day to day life of
fitted model is adequate in predicting living beings. Delaying these processes
number of days that the construction of the especially affect on health of human beings.
particular water treatment project gets The study has found some factors which are
delayled. significantly related with the delay of
construction of water treatment projects.
The best fitted model is given by
Delayed at mobilization stage, unavoidable
Number of days delayed =62.044 – issues, shipment delays in import materials
3.155*Delayed at mobilization and chemicals and delay of installation were
stage+2.021* Unavoidable issues - idenfitied as factors that related with delay
0.860*Import delays + 2.244* Installation of water and waste water treatment projects.
delays.
According to this research findings it
According to the above model, can be suggested that some feasible
unavoidable issues and installation delay solutions to reduce or to eliminate
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