If you already do this for a living: Tracing back to the EIR. A detailed matrix that does not show which requirement each line answers cannot prove that every requirement has an owner.
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“The architect is responsible for architecture” is a fine sentence for a tender. It is not enough to run a project. Who models the stairs, the architect or the steel fabricator? Who provides the door data, and by which milestone? The detailed responsibility matrix answers those questions before production starts.
ISO 19650 uses two different matrices:
- Information management activities. Each management task (set up the CDE, check information, authorise it, keep the registers) against each party. The client assigns its own, and each lead appointed party assigns its team’s.
- Information deliverables. Each kind of information against the task team that produces it and the milestone it is due.
The second one grows in detail: high-level in the pre-appointment BEP, detailed once the team and its packages are confirmed.
What the detailed matrix says
For each piece of information, the detailed matrix states:
- what is produced, based on how the project is broken into containers (for example: door information, including the properties required, for all doors);
- when it is exchanged and with whom, by milestone, taking the dependencies between teams into account;
- which task team produces it, by name.
And it points back to the requirement each line answers. That is what lets anyone check that every requirement has an owner.
The high-level matrix says the architect does architecture and the steel subcontractor does steel. The stairs are steel and architecture. At stage 5 both teams have modelled them, differently, and neither has the handrail data the client asked for.
The detailed matrix gives the stair geometry to the architect until technical design, then to the steel subcontractor for fabrication, and the handrail data to the subcontractor at installation. One model at each stage, one owner for the data, and the EIR line for stair data points to both.
The matrix sets the rules; the plans fill them in
The task information delivery plans and the master plan work at the level of individual containers: this model, that drawing, this schedule, with dates. They are governed by the matrix. If the matrix says door data comes from the architect at stage 4, the architect’s TIDP lists the containers that carry it.
Key takeaways
- There are two matrices: one for information management activities (who sets up the CDE, who checks) and one for information deliverables (who produces what).
- The deliverables matrix starts high-level at tender and becomes detailed at appointment.
- The detailed matrix says what information is produced, when and with whom it is exchanged, and which task team produces it.
- Every line traces back to a requirement; the TIDPs and MIDP then plan the individual containers within its rules.
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Related tool
Who is responsible, accountable, consulted and informed for each information management task.
Open Responsibility Matrix →