Design-Build
WIP (citing and references not yet finalized)
Developed by William Axel Linderoth Michaelen, s153275
Contents |
Abstract
Design-Build is a project delivery system, mainly used in the construction industry. The method utilizes single source responsibility which differs from the more traditional dual or triple source responsibility format used in Design-Bid-Build. The responsibility is defined by contracts, where the contract in the Design-Build project binds the architect and the contractor under one contract with the project owner. One of the key reasons for doing so is to create a shared responsibility between the architect and the contractor, and thereby involve the architect in the construction phase, and the contractor in the design phase.
Design-Build projects can be further divided into two types; Architect-led Design-Build projects and Contractor-led Design-Build projects. In these cases the Design-Build entity is led either by the architect or the contractor, which affect the management structure and responsibilities in several ways with different pros and cons.
A project delivery system such as Design-Build is essential to project management in construction projects, and especially ties into project procurement management, where a clear definition of the project delivery method is needed. The defining of a project delivery method is a critical deliverable of the procurement strategy as it is defined in the PMI standards for project management. The procurement strategy should define a project delivery method, the contract payment types, and the procurement phases.
Design-Build as delivery method in construction projects enables the initiation of early on site construction, because the method facilitates overlap in the design and construction phases. Furthermore, the owner is able to minimise risks by assigning one contract to the Design-Build entity, however the owner must be willing to hand over some of the control and responsibility for design details. Technically complex projects can also benefit by integrating the contractor's expertise in the early design and development phases.
https://www.designingbuildings.co.uk/wiki/Design_and_build_procurement_route
Big Idea
Primary entities in construction projects
Owner:
Architect:
Contractor:
Choosing the right project delivery method
Before choosing a project delivery method is is important that the owner of the project is aware of the different methods that are available, and thoroughly understand for which project types each method is the most applicable, as well as pros and cons for each method. Some of the most commonly used methods used in construction projects are listed below. The description are only of the most simple version, and hence the delivery methods are not extensively elaborated upon in this article.
| Method | Description |
| Construction Management at Risk | |
| Design-Bid-Build (traditional) | The most traditional and widely used method. First an architect is chosen by the owner who then designs the project. Then the bidding phase begins where contractors bid on the project (usually the the lowest bid wins). The final phase is the construction of the project, executed by the chosen contractor. The owner signs separate contracts with respectively the architect and the contractor. |
| Design-Build | Text |
| Multi-Prime | Text |
| Integrated Project Delivery | Text |
The project owner should consider several aspects before deciding which delivery method should be used. Design-Build Institute of America (DBIA) has developed a document which acts as a guide for projects owners concerning this specific decision process. The main aspects of consideration include owner control, owner relationships, project budget, project schedule and owner risk. Link to the document can be found in the Annotated Bibliography. https://dbia.org/wp-content/uploads/2018/05/Primers-Choosing-Delivery-Method.pdf
Why choose Design-Build
https://www.pmi.org/learning/library/selecting-best-project-delivery-system-8910
Pros:
- One liable party: Text
- Efficiency: Text
- Collaboration: Text
- Project costs: Text
- Fewer disputes: Text
- Direct payment: Text
Cons:
- Conflicts of interest: Text
- Less innovative design: Text
- Requires more engagement from the owner: Text
- No bidding restricts access for subs: Text
- Increased liability: Text
Management Structures
https://www.levelset.com/blog/design-build/
Contract
https://www.consensusdocs.org/contract_category/designbuild/
Figure / Picture
Limitations
Annotated Bibliography
Book title Descriptive text
