- Watch out
- What it costs
- Experienced readers
- Remember
- In BIMpedia
Every project, from a house extension to a hospital, comes down to what is built (scope), when (time), for how much (cost) and how well (quality), within a contract and with someone accountable for each. Change one and the others move. The project manager's job is to keep them in balance.
| Role | Accountable for |
|---|---|
| Client / sponsor | Why the project exists, the budget, the big decisions |
| Project manager / director | Delivering scope on time, on budget, to quality |
| Discipline leads | Their part of the design or works |
| Information manager / BIM lead | The information work stream: requirements, plans, delivery |
Where information fits
Information delivery is a work stream like design or procurement. Its milestones (model drops, reviews, handover data) must fit the programme: design freezes, client reviews, tenders, long-lead procurement. Build the MIDP from those dates, leaving time for checking and acceptance.
The BIM lead writes an MIDP with monthly model drops, without looking at the programme. The client's stage 3 review falls a week before the drop; the PM moves the drop, the designers rush, and the MIDP is never updated again.
The BIM lead starts from the programme: each model drop is set two weeks before a review or tender date, with a week for checks. The PM sees the MIDP as part of the plan and protects its dates.
The client brings the stage 4 tender forward by three weeks. The design team panics.
Rewrite these coordinator messages in PM terms (impact, options, decision needed).
- "The MEP model doesn't line up with the architecture."
- "Door data is missing from the model."
Key takeaways
- Scope (what), time (when), cost (how much) and quality (how good) pull against each other; changing one moves the others.
- The project manager (or project director) is accountable for the whole; discipline leads for their parts.
- Information delivery is one of the project's work streams, with milestones that must fit the programme.
- A good coordinator speaks the PM's language: impact on scope, time, cost, quality and risk.

