is the process
of services creating cost data like reference
costs, cost databases and costing algorithms
for the purpose of construction, repair.
maintenance, or capital planning purposes.
Construction Cost Engineering
involves scientific
principles and techniques are applied to
problems of cost estimation, cost control,
business planning and management service
Cost engineering
In 1956, cost engineers formed an association under the name of the
American Association of Cost Engineers, or AACE
This association is
devoted to the advancement of cost engineering wherein scientific
principles and techniques are applied to problems of cost estimation,
cost control, business planning, and management service.
American Association of Cost Engineers, or AACE
is an internal accounting systems designed for managing
costs in an organization. It provides information for controlling costs.
Cost accounting
is a method of presentation of the financial status of the
organization to the stakeholders, legal authorities or financial institutions who
are not directly involved in the day-to-day running of the organization.
Financial accounting
The role of cost engineering in the project execution stage is just as important.
Basically, its functions will include:
1.Project Budgets
2.Assistance during the 3.Design Phase
4.Evaluation of Bids
5.Cost Control and 6.Forecasting
7.Review of Extra Work
8.Planning and Scheduling
Instead of waiting for an overall design completion, the proposal estimate should be refined and issued as the
project budget
This definitive, or control estimate, should be in such detail as to indicate all the equipment with specifications and physical characteristics, a complete bulk-material take-off with costs, construction manhours, all construction support facilities, and all indirect costs.
project budgets
All bids for equipment and bulk materials must be reviewed by
the cost engineering department to ensure conformance with
the budget.
evaluation of bids
is defined by the American Association of Cost Engineers (AACE) as the application of procedures which attempt to limit project costs to those authorized, to focus control efforts where they will be most effective and to achieve maximum control at minimum cost.
Cost control
a procedure used to make predictions or
estimates about the future of an ongoing project. By analyzing
metrics such as cost, duration and the quality or performance of
the deliverable, project managers can determine whether a
project is on track.
Forecasting
This is the main function of the cost engineer during the
construction phase.
Cost control and Forecasting
As part of the cost-control function, the cost engineer is
constantly involved in
estimating work in place,
cost to complete, the cost of alternative designs, and scope changes.
is a fact of life in the construction of any project.
Regardless of how well the plant is designed, how much has
been completed, and what the final bid specifications are,
changes and additions are always present.
Extra work
part of the process of submitting a proposal for a
construction project.
Bid
All bids for equipment and bulk materials must be reviewed by
the cost engineering department
to ensure conformance with
the budget.
submitted to the client with the bid will be a
binding document, even though this may include only
milestone activities or events.
The schedule
could be used in the initial stage of
the project, but as the job progresses and more details are
known, the schedule could be expanded accordingly.
The "milestone" schedule
The schedule should parallel activities shown in the estimate and
should be prepared by
Cost Engineers with the cooperation of all
departments involved.
is a qualified professional dedicated to TCM (Total Cost
Management) over the life cycle of a project, facility or manufacturing
operation.
Cost Engineer
Cost Engineers are responsible for carefully _____ and ______ the
integrity of all project capitalizable, and related non-capitalizable, cost data.
managing and maintaining
The cost engineer studies
all actual costs, using as many cost
categories as possible.
Engineers and their achievements have been
around for millennia. An early example is a
treatise that discusses engineering and
capital investment in mining and metals in
Latin entitled
‘De Re Metallica’ by Agricola in 1556
by 1852, the ______ was founded.
American Society of Civil Engineers and
Architects (ASCE®)
Civil engineering in the United Kingdom (UK) led the way primarily
because of its role in the construction of canals for
transport to
support the industrial revolution.
It is in the ___era that the first
of our early ‘cost engineers’ comes to light.
railway mania
is considered the father of formal
‘engineering economy’ practice which is central to
the practice of Cost Engineering and investment
decision making
Arthur Wellington
became an author publishing the
“Methods for the Computation from Diagrams of
Preliminary and Final Estimates of Railway
Earthwork” in 1874 at the still young age of 27.
Arthur Wellington
From a cost estimating perspective this became a valuable
reference on the practice of
quantity takeoff
refers to the estimation of materials,
resources, and labor needed to complete a construction project.
Quantity takeoff
his first notable contribution to
Cost Engineering is his prodigious publication
of numerous unit cost data books from 1903
to 1922 encompassing thousands of pages on
rock excavation, earth excavation, clearing
and grubbing, concrete, roads, mechanical
and electrical
HALBERT POWERS GILLETTE
Mr. Gillette's other notable contribution was to the practice of cost control. His text
with Richard Dana titled _______ in 1909
laid out many of the practices of cost management used in construction
today.
Cost Keeping and Management Engineering
are expenses that can be traced directly to a
specific construction activity, task or project. These costs are the
building blocks of any construction project. Direct costs are often
referred to as project costs.
Direct costs
refer to the indirect costs related with
running a construction project that are not directly attributed to
any specific task or material. These costs are essential for
ensuring smooth operations and achieving project success.
Overhead expenses
He graduated with a degree in Civil Engineering from Cornell University
in 1892 and joined the faculty of Stanford in 1893; he taught at Stanford
for the next 42 years. He taught courses in railroad engineering and
other topics, but is most remembered for his work in engineering
economy.
JOHN CHARLES LOUNSBURY FISH
Two professors, ____ and _____ founded
Industrial Research Services, Inc. in 1942 to “assist businesses in
obtaining and managing information pertinent to estimating project
costs” in the process industries.
Dr. Irvin Lavine and Dr. O.T. Zimmerman
They went on to publish a book in 1949 entitled ‘Chemical Engineering
Costs’ which by 1952 evolved into a regularly updated publication; the
‘Chemical Engineering Costs Quarterly’
Dr. Irvin Lavine and Dr. O.T. Zimmerman
A supervising engineer that suggested the idea to form
an organization to Zimmerman and Lavine. He suggested the title/name
to be “National Association of Cost Estimating Engineers
Norman Bach
can analyze vast datasets to forecast potential cost
overruns and identify risk factors early in the project lifecycle.
AI algorithms
The complexity and scale of modern projects demand a more
advanced approach to identifying, analyzing and mitigating risks.
Advanced Risk Analysis And Management Techniques
Environmentally sustainable practices are a fundamental shift in
project planning and execution.
Sustainable And Green Engineering
To identify the costs associated with an activity, construction
costs are categorized into
Direct Costs’ and ‘Indirect Costs’ or ‘Overheads’.
Production/Construction Cost = Direct Cost + Indirect Cost
are costs that can be correlated to a specific
activity or a work-item which is being done or constructed
Direct costs
all costs connected with materials which become
permanent part of the project; can be measured and
costed item-wise
direct materials cost
covers net expenses for procurement, maintenance,
and wages of foremen and all category of workers
employed at the work site for the execution of an item
of project.
DIRECT LABOUR COST
all other expenses on account of services
rendered, which can be directly attributed to and
clearly identified with the execution of an activity
or work-item.
OTHER DIRECT EXPENSES
all costs which are attributable to a given project
but cannot be identified with the performance of
a specific activity or a work-package; range of
indirect costs vary from 7.5% to 35% of the total
costs.
indirect costs
all indirect manpower, indirect materials and other expenses
of the functional set-ups concerned with providing technical
and logistic support to the production centers
EXTERNAL SUPPORT SERVICES CODES
contain indirect manpower, indirect materials and other
expenses incurred by the project management for the
direction, control and administration of the project
ADMINISTRATION OVERHEADS
direct material costs includes the following:
1.purchase costs, ex-factory or specified delivery
location
2.transportation costs incl. customs, insurance and
handling charges
3.site manufacturing and fabrication costs
direct labor includes:
1.basic wages, overtime and allowances
2.procurement expenses incl. recruitment and
conveyance at site
3.benefits and statutory regulation compensation
expenses such as earned leave, gratuity, bonus,
insurance, medical, etc.
4.also covers expenditures on accomodation and mess
ammenities if these are not covered under overheads
EXAMPLES OF OTHER DIRECT EXPENSES
1.special purpose plant and machinery costs
2.sub-contracted activities
3.hired resources costs for execution of specified permanent
work
4.temporary activity required for a specific work
special assistant consultant services, if separate activities
5.investigation/trials necessary to establish procedures for
undertaking the construction of a given work or activit
expenses relating to the operations and services
rendered by the home-office
HOME OFFICE OVERHEADS
it includes construction management and related
staff
SUPERVISOR
it includes logistics, clerks, security,
site cleaning, warehousing, maintenance of equipment, (except
personnel involved in temporary facilities, construction,
operation, maintenance and dismantling).
INDIRECT PERSONNEL
it includes supply, installation
(incl. labor) and dismantling of temporary facilities such as, but
not limited to:
TEMPORARY SITE FACILITIES
it consist of operating costs associated
with temporary
GENEREAL FIELD EXPENSES
it covers costs associated (except transportation
costs) with construction equipment, vehicles, cars, spare parts, in the
entire duration of the project
EQUIPMENT COSTS
it includes costs of fuel,
lubricants, small tools, wearing parts and consumables
SMALL TOOLS AND CONSUMABLES
it covers supply, installation and dismantling of camp
and related facilities (kitchen, temporary roads, utility materials)
HOUSING COSTS
it includes catering and camp operating costs
CATERING COSTS
it caters for personnal
equipment, temporary facility item, small tools, consumables, camp
structure and other facilities
MOBILIZATION AND DEMOBILIZATION
In some contracts, most of the indirect costs are priced under the
preliminaries section of the BOQ and the balance is distributed
proportionally in the remaining items of the BOQ.
Sharing Indirect Costs
is a process where project
managers predict the amount of money they need
to fund their projects.
Cost estimation
IMPORTANCE OF COST ESTIMATION
1.Budgeting and Financial Planning
2.Project Planning and Control
3.Risk Management
4.Decision-Making
5.Stakeholder Communication
uses historical data to
calculate the costs associated with different components of a
project.
The parametric estimating method
“preliminary” or “ballpark” estimate, less than ____
accuracy
15-25%
are common
methods used in cost estimation, particularly in
construction and real estate.
Square foot and cubic foot estimates
Involves calculating costs based on
the area of a space. It is commonly used for estimating costs
related to flooring, painting, roofing, and other surface-based
elements.
Square Foot Estimates
This method involves calculating
costs based on the volume of a space. It is used for
estimating costs related to volumetric elements such as
insulation, concrete, or excavation.
Cubic Foot Estimates
involve determining the total cost of a
construction assembly or unit, which includes materials, labor, and
other components needed to complete a specific segment of the
project.
Assembly Estimates
involve estimating the costs associated with
entire systems within a construction project, such as electrical
systems or plumbing systems.
Systems Estimates
intermediate level estimates, when drawings are
___ complete
within _____ accuracy
10-75% complete and 10%
the most widely used format
of contract. For a number of reasons, almost all contracts
that involve public funds are awarded using competitively
bid contracts.
A competitively bid contract
is one in which the contractor
quotes one price, which covers all work and services required by the
contract plans and specifications.
A lump-sum or stipulated-sum contract
the project is broken down into work
items that can be characterized by units such as cubic yards,
linear and square feet, and piece numbers
unit-price contracts
is the second most widely used contract
format.
The negotiated contract