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Planning
& Construction: PROJECT
DELIVERY METHODS
A major
capital improvements program involves important decisions regarding
the method by which the projects will be designed and constructed -
the project delivery method. This decision has become more complex
as a variety of alternative delivery methods have been developed to
address weaknesses in the "traditional" design-bid-build process.
Methods that have gained in popularity include fast-track
construction, multiple prime contracting, and design-build.
1)
TRADITIONAL (DESIGN / BID / BUILD)
This delivery
method offers the advantage of being widely applicable, well
understood, with well-established and clearly defined roles for the
parties involved. It offers the Owner a significant amount of
control over the end product, as the facility's features are
determined and specified prior to selection of the contractor.
However, many owners have experienced a variety of frustrations
using this system, leading to the development of other methods.
Once
completed, the design package is issued to interested general
contractors, who prepare bids for the work and execute contracts
with subcontractors. The contractor submitting the lowest responsive
bid is selected to perform the construction. This contractor is then
responsible for constructing the facility in accordance with the
design. The Architect typically maintains limited oversight of the
work and responds to questions about the design on behalf of the
Owner.
Design-Bid-Build Pros:
- Competitive bidding process
- Easy to manage, universally understood
- Defined project prior to bid
Design-Bid-Build Cons:
- Contractors take advantage of "competitive process"
- Design suffers from a lack of input from contractors and
subcontractors
- Changes orders are common
- Owner has full exposure to change orders
- Delay claims and disputes are common
2) MULTIPLE PRIME
This system,
which many state agencies use, has gained favor in part as another
method of "fast-tracking" construction. Work in each construction
discipline is bid separately.
For a given
project, there may be numerous bid packages depending on the size,
complexity and economic breakdown of the project. These "trade
contracts" can be bid as unit-pricing contracts for use on a variety
of projects. This fast-track approach appears to be a highly
desirable feature of this method of procurement in cases where time
of performance is a critical element. The Construction Manager (CM)
creates multiple bid packages from the basic design documents
created by the design team. The CM administers the construction
through individual trade contractors contracted directly with the
Owner.
CM
Multiple Prime Pros:
- Economy of scale
- Time for project delivery is reduced
- Defined requirements and cost containment
CM
Multiple Prime Cons:
- Not suitable for complex or custom projects
- Multiple contracts can make for administrative difficulty
- Owner liability in the event one prime trade contractor
damages another
- Lack of a single, guaranteed, bonded price for the total
project
- Changes in project scope will generate change orders
3) DESIGN / BUILD
In 2002, San Mateo County Community College District realized
that using additional construction delivery methods, such as
design-build, would enhance its ability to implement projects
efficiently and effectively – to the benefit of its students,
faculty, community and taxpayers. SMCCCD asked then-assembly
member Joe Simitian to sponsor legislation that would allow
community colleges to utilize design-build, a delivery method
used successfully in the private sector. AB1000 passed and
eventually became Education Code
§81700,
naming San Mateo County Community College District, San
Jose-Evergreen CCD and LACCCD as three districts who could use
design-build in a pilot program to ascertain if this delivery
method could be successful in community college construction.
SMCCCD has successfully delivered or is in the process of completing
5 projects under the EC81700 code authorization (along with 1
project under Government Code 4217 and another project under
Government Code 5956):
·
Energy Efficiency Projects, Districtwide (GC4217)
·
Athletic Facilities Upgrades, Districtwide (EC81700)
·
Science Building, College of San Mateo (EC81700)
·
Student Union and Science Annex, Skyline College (EC81700)
·
Faculty and Staff Housing, College of San Mateo (GC5956)
Possibly the greatest advantage offered by the Design/Build
process to many Owners is that at some point early in the design
process, the Owner negotiates a guaranteed maximum price for the
finished project.
A significant advantage of Design/Build over the "traditional"
design-bid-build delivery method is that the Owner has a single
contract and point of contact for the design and construction of
the project. The contract is fully inclusive of all services and
products to be delivered by the team. The Owner typically does
not have to resolve or even become involved with the
difficulties and disagreements between the team members that can
complicate the low-bid delivery method. With the contractor and
designer working collaboratively through the design process, the
contractor gains a thorough and detailed knowledge of the design
intent and the architect can design in the details and systems
that the contractor can provide most efficiently.
Another significant advantage of Design/Build is the compressed
time schedule that is possible through phased permitting
approvals. SMCCCD’s projects delivered using Design/Build have
resulted in facilities being turned over to the Owner more than
a year sooner than if those projects had been designed, bid and
then built.
Design-Build Pros:
- Single point of responsibility for both design and construction - Project delivery time is reduced - Design/build contractors add construction practicality to design
imagination - Owners get an enforceable price for construction early in the
project - The contractor can negotiate subcontracts so the owner can benefit
from reliable subcontractors
Design-Build Cons:
- Unless the scope is well-defined, Owner is at risk for quality
and Owner has less control over design. - Without clear direction, Owner-initiated changes will cause
change orders - The Architect works for the Contractor, not the Owner
California Community Colleges Design-Build Guidelines (Adobe
Acrobat version)
Report on
Design-Build Pursuant to the Requirements of Education Code
81700-ET.SEQ
(Adobe Acrobat Version)
"Facilities
Excellence"

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Facilities Planning & Operations
Phone: (650) 574-6512
Fax: (650) 574-6574
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Construction Planning Department
Phone: (650) 358-6785
Fax: (650) 358-6764 |
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