Project Delivery Methods
Exploring different project delivery methods: Design-Bid-Build, Design-Build, and Construction Management.
A project delivery method is the comprehensive process of assigning contractual responsibilities for designing and constructing a project. It defines the relationships between the owner, designer, and contractor.
Design-Bid-Build (DBB)
The Traditional Method
The owner holds two separate contracts: one with the Designer (Architect/Engineer) and one with the Contractor.
The project proceeds in linear phases: the design is 100% completed, the project is put out to bid, a contractor is selected (usually the lowest bidder), and construction begins.
Checklist
- Advantages: Clear roles, competitive bidding yields the lowest initial cost, owner retains control over the design.
- Disadvantages: Longest timeline (phases cannot overlap), contractor has no input during design, high potential for adversarial relationships and change orders if the design is flawed.
Design-Build (DB)
Single Point of Responsibility
The owner holds a single contract with a Design-Builder (often a joint venture or a contractor with in-house design capabilities) who is responsible for both designing and constructing the project.
Checklist
- Advantages: Faster delivery ("fast-tracking" allows construction to start before design is finished), single point of responsibility for the owner, fewer change orders related to design errors, collaborative environment.
- Disadvantages: Owner has less control over the final design details, fewer checks and balances compared to DBB.
Construction Management (CM)
Construction Management at Risk (CMAR)
The owner contracts separately with a Designer and a Construction Manager. The CM acts as a consultant during the design phase (providing constructability reviews and cost estimates) and then transitions to the role of a general contractor during construction, usually guaranteeing a maximum price (GMP).
Checklist
- Advantages: Early contractor involvement improves design constructability and cost accuracy, allows for fast-tracking, GMP limits owner's financial exposure.
- Disadvantages: Still requires two separate contracts, potential conflict of interest when the CM transitions from consultant to contractor.
Construction Management Agency (CMA)
The owner contracts with a Designer, multiple prime Contractors (for different trades), and a Construction Manager who acts purely as an advisor/agent for the owner, overseeing the contractors but holding no construction risk themselves.
Integrated Project Delivery (IPD)
Integrated Project Delivery (IPD)
A highly collaborative delivery method where the owner, designer, and primary contractor sign a single, multi-party contract. Risk and reward are shared among all key stakeholders based on the overall success of the project, rather than individual performance. It relies heavily on Building Information Modeling (BIM) and lean construction principles.
Key Takeaways
- DBB (Traditional): Two contracts, linear process, design completed before bidding.
- Design-Build: Single contract, fast-tracking possible, single point of accountability.
- CMAR: CM consults during design, then acts as GC with a Guaranteed Maximum Price (GMP).
- IPD: Highly collaborative, multi-party contract, shared risk and reward.
Build-Operate-Transfer (BOT) Law (RA 6957 as amended by RA 7718)
In the Philippines, large-scale infrastructure projects (like tollways, airports, and power plants) are often delivered through Public-Private Partnerships (PPP) governed by the BOT Law.
BOT Framework
Under this scheme, a private entity (the project proponent) undertakes the financing, design, construction, operation, and maintenance of an infrastructure facility over a fixed term (typically not exceeding 50 years).
During the operation period, the proponent is allowed to charge facility users (e.g., tolls, fees) to recover its investment and operating expenses, plus a reasonable rate of return. At the end of the concession period, the facility is transferred to the government agency or local government unit concerned.
Checklist
- Build-Operate-Transfer (BOT): The classic model where the private entity builds, operates, and eventually transfers the facility.
- Build-and-Transfer (BT): The private entity builds the facility and immediately transfers it to the government, which pays the contractor according to an agreed schedule.
- Build-Own-and-Operate (BOO): The private entity is authorized to finance, construct, own, operate and maintain an infrastructure facility, from which the proponent is allowed to recover its total investment, operating and maintenance costs plus a reasonable return thereon by collecting tolls, fees, rentals or other charges from facility users. The facility is not transferred to the government.
- Build-Lease-and-Transfer (BLT): The private entity builds the facility and leases it to the government for a fixed period, after which ownership is transferred to the government.
Key Takeaways
- The BOT Law (RA 6957/7718) provides the legal framework for Public-Private Partnerships in the Philippines.
- It allows private capital to finance major public infrastructure, shifting the initial financial burden away from the government.