Case Study: Different Types of Construction Project Delivery Methods

In civil engineering, selecting the appropriate project delivery method is crucial for the successful execution of construction projects. Several factors, including project complexity, client requirements, budget constraints, and risk allocation, influence the choice of delivery method. Let's explore three common project delivery methods through a case study scenario:

Scenario:

A city government is planning to build a new public library to serve its growing population. The city council has allocated a significant budget for the project and is considering different project delivery methods to ensure timely completion and cost efficiency.

1. Design-Bid-Build (DBB):

In the Design-Bid-Build method, the project is divided into three distinct phases: design, bidding, and construction.

Design Phase: The city government hires an architectural and engineering firm to develop detailed plans and specifications for the new library based on the city's requirements and budget.

Bidding Phase: Once the design is complete, the city issues a request for proposals (RFP) or invites bids from qualified contractors to construct the library based on the provided plans and specifications.

Construction Phase: The city awards the construction contract to the lowest responsive and responsible bidder, who then builds the library according to the approved design documents.

2. Design-Build (DB):

In the Design-Build method, the design and construction phases are combined, with a single entity responsible for both aspects of the project.

Design-Build Phase: The city selects a design-build team, consisting of architects, engineers, and contractors, through a competitive procurement process. The design-build team collaborates to develop the project's design and construction plans, often emphasizing innovation and value engineering to optimize project outcomes.

Construction Phase: Once the design is finalized and approved by the city, the design-build team proceeds with construction, leveraging their integrated approach to streamline project delivery and minimize potential conflicts.

3. Construction Manager at Risk (CMAR):

In the Construction Manager at Risk method, a construction manager (CM) is engaged during the early stages of the project to provide pre-construction services and serve as a risk manager throughout the construction process.

Pre-Construction Phase: The city hires a construction manager based on qualifications and experience. The CM works closely with the city and the design team during the design phase to provide input on constructability, cost estimating, scheduling, and value engineering.

Construction Phase: Once the design is complete, the CM transitions into the role of the general contractor and assumes responsibility for managing subcontractors, scheduling construction activities, and ensuring project quality and safety.

Objective Type Question:

Which project delivery method involves a single entity responsible for both the design and construction phases?

A) Design-Bid-Build (DBB) B) Design-Build (DB) C) Construction Manager at Risk (CMAR) D) None of the above