In Thailand,
the numbers of construction project are increased by the investment from both government
and private sector. The government invested in infrastructure construction
projects such as metropolitan rapid transit projects, roads, government agency
buildings, etc. for the purpose of stimulating economics in country. Private
sector invested in condominium, house, hotel, department store, factory and
etc. for responding the demand of the consumer. During execution and closing
these projects, there are many problems happen
repetitiously, irrespective of small projects or large projects, for example
rework, lack of quality assurance, change scope of work, lack of inspection, a
lot of defect work, project delay, cost overrun and etc. The causes of problem
are the improper selection and implement project management process in each
project which has different characteristic and different project delivery
system. Therefore, the study of project management process in construction
project of Thailand will benefit the owner, designer, contractor and
subcontractor to comprehend the risks of each process and to improve the
execution of project more efficiency. Chen et al. (2009)
state that the good project management processes give the resultant value and benefits such as
better project control, better organization reputation, increased
efficiency/profitability, greater project transparency, more stakeholder/client
satisfaction, and etc.
Mr. Praneet Prasongnitjakit made a research focused on the project management processes in
different project delivery system from design phase to handover the project.
The research also aimed to:
1. identify project organization structure for
different project delivery system.
2. identify project management process and control
for different project delivery system for controlling time, cost, and quality.
3. identify contract administration practices of
each project management process for different project delivery system.
4. Analysis benefits and risks of each different
project delivery system.
5. Developing model to select properly project
delivery system.
Conclusion
1. Project organization structure for different project
delivery system
The organization structure directly involves in project
management process by providing the eligible personnel to implement process.
The organization structure also demonstrates the authority, responsibility of
the owner, consultant firm, and the contractor including the relationship
between the parties in project. The researcher summarizes the relationship, responsibility and communication the organization
structure of each project delivery systems as follow:
A. The
organization structure of EPC project delivery system
The research finding reveals the relationship, responsibility and
communication of project organization structure of EPC project delivery system
that the owner contracts with contractor to respond design and engineering
work, procurement work, and construction work. The owner contracts the
consultant firm to review design drawing and construction documents and
inspection during construction. The organization chart is shown in Figure 1.
The communication between the owner and contractor is through the
consultant. The responsibility of each party in this organization as follows:
i) The owner approves the effective quality management
system, project master schedule, vendor list, payment and change order.
ii) The consultant responds to review design drawing,
construction documents, inspection and test.
iii) The contractor responds to management project, develop
design drawing and engineering document, procurement all materials, equipment
and machinery for construction in accordance with scope of work in contract.
B.
The organization structure of PMC project delivery system
The research finding reveals the
relationship, responsibility and communication of project organization
structure of PMC project delivery system that the owner hires PMC for
management project from design until project handover to the owner and hires
the design consultant company to design and develop design drawing until
finish. The owner hires multiple prime contractors for construction project.
The communication between owner and multiple prime contractors is
through PMC. The responsibility of each party in this organization as follows:
i) The owner responds to approve
payment and change order.
ii) PMC responds to management
project from design until the completed project handover to the owner,
coordinate with local district officer to request construction permit and
building certificate.
iii) The contractor responds to
execute construction and purchase all construction material in accordance with
scope of work in contract.
C. The
organization structure of DBB project delivery system
The research finding reveals the relationship, responsibility and
communication of project organization structure of DBB project delivery system
that the owner contracts with the consultant firms to design until complete,
review the construction document and inspection during construction. The owner
contracts qualified bidder with the lowest bid price. The general organization
chart is shown in Figure 3.
There is a direct communication between the owner and the
contractor. The responsibility of each party in this organization as follows:
i) The owner responds to
management project, approve design, arranging bidding process and award
contractor, construction management, approve payment, and change order.
ii) The consultant responds to
design and engineering documents, preparing bid document, review construction
document and inspection.
iii) The contractor responds to
execute construction and purchase all construction material in accordance with
scope of work in contract.
D. The
organization structure of DM project delivery system
The research finding reveals the relationship, responsibility and
communication of project organization structure of DM project delivery system
that the owner contracts with the consultant firm to design, construction
management and construction supervision. The owner contracts with qualified
bidders with the highest score from evaluation in bidding. The general contract
organization chart is shown in Figure 4.
The communication between the owner and all prime contractors is through
the consultant. The responsibility of each party in this organization chart as
follows:
i) The owner responds to make
payment for the contractor, approve the change order for contract time and/or
contract price. He also takes responsibility to procure the specific equipment
and machinery and provide specification to the consultant for design.
ii) The consultant responds to
design, arranging bidding process, construction management, construction
supervision, contract administration and coordination with vendors for
installation.
iii) The contractor responds to
execute all constructions in accordance with scope of work in contract.
2. Project management process and control for different
project delivery system for controlling time, cost and quality
The project management process relates with product and
process interaction in order to accomplish the product. This research studied
the project management process of EPC, PMC, DBB and DM in order to define to
feature of project management process for controlling time, cost and quality
for different project delivery system in order to select the suitable project
delivery system for different type of project.
A. EPC
Project delivery system
In this study, EPC project delivery system is selected for
power plant which comprise of specific equipment and machinery. The EPC project
conducts the phases in parallel rather one series for completed project within
COD. EPC contractor arranges project management processes into nine main processes.
These processes are used to manage the activities in design and engineering,
procurement and construction in order to control time, cost and quality and
also, link related activities between Engineering-Procurement,
Engineering-Construction and Procurement-Construction to work collaboration.
Time management
EPC project use project master schedule to manage
overlapping time between Engineering, Procurement and Construction in order to
speed up project. The process of Engineering and Procurement need to work
parallel for integration specification of specific material into detailed
design. The completed detailed design and specification are transferred to Procurement
to issue requisition in purchasing material, and to transfer construction
drawing to Construction unit for execution in each stage. The delay in design
or procurement has effect on construction schedule directly. Thus, progress of
work was monitored by measurement, earned completion percentage of every
activities in project against with project master schedule. The activity delay status
was monitored every day until it met the schedule.
Quality management
The Quality of works in EPC project are controlled in every
phase such as the quality of design drawings are checked by relevant designer
of other design group and review by the consultant again. The quality of
equipment and machinery are checked by the inspector at the manufacturing and upon
its arrival on the construction field by the contractor and consultant.
Packaging and transportation also use for product quality control during
delivery to construction field. The quality of construction works are inspected
and tested, and test plan the quality procedure by quality control unit of the contractor
and verified by consultant.
All documents which involve with execution and control
quality of work are kept for audit. The process of construction was again inspected
to ensure that the quality system is followed up the project quality management
system.
Cost management
The EPC project has controlled cost from review concept of
design and cost estimate must within the construction budget. The 60% of budget
is for procurement work. The project manager together with procurement
controller controls the price of every material while the subcontractors compared
price between three vendors and recorded the price for the company. Materials
are requested by construction department. The Construction manager control
waste of material in construction field to control construction cost.
B. PMC
project delivery system
PMC project delivery system in this case study is applied to
residential condominium which had been specified delivery date to customer. PMC
takes responsibility to manage project as project manager of the owner in order
to control all process in the project until the completion of project. In order
to accomplish the project, the owner
developed standard pattern of design and specification standard, hires same
multiple prime contractor in every project. The fixed schedule and construction
method used controlling time, cost and quality in project.
Time management
The project master schedule is fixed duration for
construction structural, architectural in each floor, thus productivity rate
and construction method of main activities in project are monitored and
controlled. The coordination between prime contractors to interface activities
is control by PMC together with structural and architectural contractor.
Quality management
In PMC project, the process to check quality of design is
not established because the project uses standard pattern of design and
specification standard. Quality of contractor is evaluated when project was completed
by using data from customer recommendation for evaluation. In construction
stage, QC is using internal check by the contractors. The contractor has to
recheck the quality of predecessor for ensure that it will not effect to his
work. PMC takes responsibility as auditor to check quality at random.
Cost management
The costs of construction in
previous projects are recorded. Cost estimate of new project is compared with
this record to define cost variation. The construction budget is fixed. PMC
takes responsibility to control this construction budget. Hence, change order
is controlled for balance cost within budget.
C. DBB
project delivery system
The DBB project delivery system is applied for transmission
rehabilitation project of state enterprise. The owner decides to use DBB
project delivery system because all contractors in Thailand do not have
experience for rehabilitation tunnel. Hence, the design drawings need to
complete before construction for reduce risk during construction. The owner
manage project by himself. He hires the consultant to design follow his
concept. Bidding process can be started after the owner ensures that the
details design drawings are completed. Also, the construction process can be
started after all other organizations agree to the owner for using their area
during construction. The project can be delivered to the owner after the owner
can use the tunnel for transmit water supply.
Time management
The project master schedule is developed from the recorded
document of similar project in the previous. The contractor has to develop
construction master schedule and details schedule for using to control project
during construction. The project is monitored by measurement productivity rate
of main activity compare with required productivity rate in schedule every day.
The weekly meeting is arranged to monitoring project status, problem and
solution to correct such problem.
Quality Management
In DBB project, the quality of design is checked by internal
process of designer as explanation in design process. Due to the owner has a
lot of knowledge in his construction area, thus, the owner review in details
design and gives comments to designer.
In construction stage, the quality of work follows up the
quality standard which has been specified in specification during design phase.
The quality control process is established to control quality standard document
which specify in contract. Test and Inspection process are used to control
during construction and the quality of readiness work. The owner also hires the
consultant to check the step of construction as explanation in construction
method statement and quality of work in each step during the contractor
execution until completion of such work. The owner randomly checks some
activities again as auditor.
Cost management
Cost of project is controlled during develop details design
drawing. The consultant estimate cost of work compare details design submit to
the owner for consideration. The owner order the consultant corrects drawings
when cost estimate higher than his expected cost. The final cost estimate is
submitted to JICA for consideration approve loan to the owner as he request.
The contract price is controlled within budget during bidding by negotiate with
bidder who propose lowest price. Cost of project during construction is
controlled within contract price. The owner control cash flow of project
against cash flow plan by control progress payment and change order in project.
D. DM
project delivery system
DM project delivery system in this case study is applied to
construction food factory. The consultant takes responsibility to design,
bidding and construction management in project. Design drawings and other
engineering documents are developed parallel with the construction until
completion. The designers still takes responsibility to provide additional
information or additional drawing or both to the project until the construction
finish. In bidding process, the consultant provide service to prepare list of
prospective contractor to be a bidders, evaluate prequalification proposal to
select qualified bidders, prepare bid instruction documents, bid documents,
arrange bidding processes, evaluate bid proposal and recommendation and assist
the owner during negotiation. During construction phase, the consultant
provides service construction management, construction supervision and contract
administration in project. The coordination between multiple contractors to
interface work is key to control overall schedule of project finish on time as
specifying in construction master schedule. The delay of schedule also causes
from the change order that effect to the related work to be suspended.
Time management
There are two main schedules that use to control project. Project
master schedule uses to control all activities in project from design until
handover to the owner. The Construction master schedule use to control all
activities during construction. In order to achieve schedule during design and
biding, the consultant develop operation plan for design and bidding, designer
keeps closely collaboration with the owner, establishing design procedure and
bidding procedure and using stock of knowledge in similar project to reduce
time for preparation documents.
Combine schedule of each prime contractor for using to
coordinate and interface works is key success to complete project with in time
frame. The consultant takes responsibility to coordinate all prime contractor
including vendors to start working in each area. Percent complete of work in
each activities are calculated for monitoring status of project against
construction master schedule.
Quality management
The Quality Characteristic and Quality of design are concept
to control the quality of design. In order to achieve this concept the process
to control quality of design consists of selecting qualified designer,
established design procedure, communication within team work, recorded comments
in design for review, arranging design review meeting, control of drawing and
specification before submit to the owner.
The quality of work during construction requires three
processes to control are field construction method, supervision and control and
inspection to assure the quality of work. The process to control quality of
work in construction field consists of control sequence of work in construction
schedule, control construction method statement, develop check list for
inspection, and control revision of drawing and specification, control
instrument for measurement, supervision and inspection and documentation for
review the quality control of project.
Cost management
The application of value management technique to find out
the project objective and using value engineering method to eliminate
unnecessary costs of project from design. In bidding process, bid price of the
bidders are evaluate by compare with cost estimate to find out the
differentiation of cost for negotiation. The construction budget is used to
control cost during construction, especially control cost of change order and
progress payment of contractor. The consultant makes cost report to submit to
the owner time by time until the project complete.
3. Contract administration practices of each project
management process for different project delivery system
The contract administration in project directly involves
with project management process from project commencement until project close
out. The activities, which are mention in contract, are administered by the
owner or the consultant. The purposes of contract administration of four cases
study that reveal in this study are as follows:
i) To inform the contract start working in project.
ii) To control the quality of work, contract price and
contract period.
iii) To control and monitoring progress and status of
project.
iv) To reduce effect to the owner if the contractor cannot
complete project.
v) To specify the condition and process to request the
progress payment and final payment of the contractor.
vi) To specify the
condition to change in scope of work and claim from such variation order.
vii) To certify the final construction that it conforms to
contractual requirement.
The Contract administrations for different project delivery
system are similarly in above purposes. However, the process to administer of
each project delivery are difference because it is implement simultaneously
with project management process which has difference in each project delivery
system.
4. Benefits and risks
of each different project delivery system.
Different project delivery systems have difference benefits
and risks because of each system are suitable for different condition. In
study, the researcher finds the benefits and risks of project delivery system
which applied in case study project as follows;
A. EPC Project Delivery System
Benefits
a) Price and time of project have a great degree of
certainty.
b) Suitable for project which needs specific
technology and time constraint.
c) Single point of responsibility and single point
of contact
d) The design is integrated with specification of
specific equipment and machineries at outset for constructability more
effectively.
e) The owner reduced resources that used to control
quality of work.
f) Risk of time constraint and cost constraint are
allocated to the contractor.
Risks
a) Risk of less competition of EPC
contractor in market that increasing price of construction.
b) Risk of less control of owner has possibility to get
non-conformity product.
c) Risk from the contractor may neglect to control
quality of work.
d) Risk from tasks
across engineering, procurement and construction lack of management.
B. PMC
Project Delivery System
Benefits
a) Project
is coordinated continually from project start until delivery to the owner by
single unit.
b) PMC
provides properly cost management method in order to control cost more
effectively.
c) PMC
provides properly time management method to ensure that project is delivered on
time.
d) Mitigation risk of project which may lead to
be risk of business.
e) PMC Provide One Stop Service during Executing
Project.
Risks
a) Risk from less capability of PMC lead to make
a mess in project.
b) Risk from less control of PMC has possibility
to get non-conformity product and schedule delay.
c) Risk from the owner interfere project
management process.
d) Risk from PMC select project management
process is not proper to project characteristic and external environment factor
that effect on project delay, low quality and cost overrun.
C. DBB Project Delivery System
Benefits
a) The owner able to have direct influence, in
design process in order to control quality in the design.
b) The completion of the design in advance of
the bidding process allows for greater certainty for the owner in budgeting the
project.
c) Suitable for the public expenditure or audit
demands are rigid as it is transparent and based upon competition
d) Change are reasonably easy to arrange and
value where the design needs vary due to changes in the owner demand, or
technology.
e) The quality standard is specified completely
in design for control contract price during bidding and control required
quality of work during project implementation.
Risks
a) The owner takes risk from design error after
design complete.
b) The overall project duration maybe longer
than project master plan due to construction cannot commence prior to the
completion of design.
c) Risk of conflict to take responsibility of
non-conformity work between design company and contractor.
d) Risk from disruption in bidding process of
unqualified bidder.
e) The owner want to speed up the process by
producing bidding documents from an incomplete design, this can result in less
cost and time certainty.
D. DM Project Delivery System
Benefits
a) Suitable for the project that want to speed
up the process by producing bidding documents from an incomplete design.
b) The cost benefits from controlling the
development of the design at the outset until design complete for the best
practice and innovation in construction.
c) Management cost collaboration from concept of
design until control cost during construction.
d) The owner benefit from single point contact.
e) Better coordination and delivery of design
information from design teams to main contractor.
Risks
a) The owner’s requirements cannot be settled in
design development effect on project completion delay and cost incur.
b) Unqualified consultant makes risk on project
disruption, or delay, or cost overrun.
c) Risk from designer may hide design error.
d) Risk from designer intend to make high
criteria to select contractor.
e) Uncertainty about the cost of the complete works
at the start of construction.
5. Selection Project Delivery System of Construction
The indicators from four categories, namely project
characteristic, project objective, characteristic of the owner & contractor
and external environment are used to identified the properly project delivery
system. The benefits and risks are help the owner and engineer to decide the
properly project delivery system which provide maximum benefits and minimize
risks to the owner. However, it does not fix to select single project delivery
system for the project. The project can be divided into many phases and select
different project delivery system for suitable to each phase.
Abstract
The
construction industry environment is becoming highly complex because of both
internal and external factors. Internally, construction project are more
integrated and complicated. Moreover, technology-driven projects with limited
resource availability have become common. For the external perspective, the
business climate is highly competitive and involves numerous project
stakeholders with single project. The project management process considerably
increased importance to implement the objective under uncertainty of this
environment. The root cause are usually due to improper selection and
implementing project management process in each project, which has different
characteristic and different project delivery system. Qualitative Approach and
Case Study method is selected in this research. Using mixed data collection
approach, case studies were developed utilizing a combination of observation,
surveys and interviews. The data from the documents and data from the collected
from the key actors of the interview are interpreted into the information by
mapping. The research finding reveals that the authority, responsibility and
role of each party in project are difference for each project delivery system.
Project management process in order to control time, cost and quality of each
project depending on project characteristic, internal factors, the constraints
of external environment and project delivery system. The contract
administration is implemented simultaneously with the project management
process to ensure that the contractual requirement is responded completely. The
features of the project management process provides the value and benefits such
as better control, increased efficiency/profitability, greater project transparency,
more client satisfaction.
Keywords
: Project
Management Process, Project delivery system, Engineering Procurement and
Construction, Design Bid and Build, Project Management Consulting, Design and
Manage