Project phases: SD, DD, CD and what they mean
The same point of maturity has five or six names depending on country and sector. The table that translates them, what each discipline delivers in each phase, and how firm a budget can be at each point.
BIM clashes: types, priority and who resolves them
The five clash types, how to set tolerances so you do not drown in false positives, the hierarchy that decides what moves, and the escalation ladder for who actually decides.
What a BIM coordinator does
What they actually decide, how the role differs from a modeller and a BIM manager, where the craft came from, and the documents that govern the work.
Drawing revisions: the cloud, the delta and the block
How change is marked on a sheet, the issue states, the difference between an addendum and a change order, and what to do when a new revision lands.
Which drawings to issue at SD, DD and CD
Sheet by sheet, with scales and counts: what you issue at each phase, what each drawing shows and how many there are. A ten-storey building compared against a two-storey house.
Dimensioning, tagging and schedules that work
The dimension strings a plan needs, what you dimension to, how doors and rooms are numbered, and how schedules are built so they come out of the model, not your hands.
What is coming
These guides come out of the VDClens Academy syllabus, the training programme we are writing. Next in line:
- Line of balance: scheduling by rhythm instead of by dates
- How a quantity take-off is done well, and what it is for afterwards
- Production rates: the number nobody writes down and everybody uses
- Scanning and point clouds: when it is worth it and what accuracy to expect