RACI matrix
Contents |
[edit] Introduction
A RACI matrix is a form of form of responsibility assignment matrix (RAM) that can be used to help systematically manage a process or project. RACI is an acronym that stands for Responsible, Accountable, Consulted, Informed.
[edit] Assigning roles
These designations can be given to individuals involved in a process:
- Responsible: The person in charge of the process.
- Accountable: The person the responsible person reports to and who must sign off on decisions. NB: Occasionally A is taken to mean 'Assists', that is, someone who assists the responsible person.
- Consulted: People who will be involved in discussions about the process.
- Informed: People who will need to be told about the process.
There can only be one responsible person and one accountable person, but there may be several people who are consulted or informed.
[edit] Clarifying assignments
The correct assignment for individuals can be recorded in the form of a RACI matrix, which gives clarity about the involvement of individuals and helps avoid confusion, duplication, wasted effort and omissions. A RACI matrix can provide more specific information about roles and responsibilities than might be possible with a simple tick-box responsibilities matrix.
This can be particularly useful on design and construction projects where there are a great number of different tasks to be performed by a large number of individuals and organisations who may never have worked together before. Knowing who is responsible for each task, who needs to be consulted and who needs to be informed can be complex, but this is essential to the successful running of the project.
For example, in defining project team roles for the production of Building Information Modelling (BIM) information, PAS 1192-2 suggests that RACI indicators might be used to define project delivery team roles, responsibilities and authority for information delivery post contract-award.
A RACI matrix might form part of a BIM execution plan or a Project Execution Plan (PEP) which sets out the strategy for managing a project. It describes who does what and how, defining the policies, procedures and priorities that will be adopted. RACI indicators are also commonly used in project management software.
NB: Other versions of RACI include:
- RACI supplemented with the letter S to form RASCI (or sometimes RACIS), where S is for 'Support' referring to someone motivating and supporting the team.
- The addition of the letter O in the form CAIRO, where O is 'Out of the loop', referring to someone who is not part of the process.
- CAIROS, where the 'Support' role is added to CAIRO.
- RACI-VS, where V is a 'Verifier', verifying the outcome against requirements, and S is the 'Signatory' signing off on the verifiers decision.
- DACI, where D is the 'Driver'.
[edit] Related articles on Designing Buildings Wiki
- BIM.
- Design responsibility matrix.
- Master information delivery plan.
- Project execution plan.
- Projectisation.
- Project roles table.
- Stakeholder matrix
[edit] External references
- GreyCampus, RACI Matrix: How does it help project managers?
- Responsibility Assignment Matrix (RACI Chart).
- Toolshero, RACI Matrix.
Featured articles and news
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.






















