Factory Construction Assumptions Log
This is a practical guide to building a assumptions log for a factory construction project — a register of the assumptions the plan depends on, to be validated, adapted to the realities of building a manufacturing plant.
What a Assumptions Log is
A assumptions log is a register of the assumptions the plan depends on, to be validated. For the full concept and how it works in general, see Project Assumption. On a factory construction project it plays the same role, tuned to this kind of work.
Why it matters for a Factory Construction project
Factory Construction projects live or die on building a manufacturing plant. A well-built assumptions log gives the team a shared, explicit reference for exactly that — reducing ambiguity, aligning stakeholders, and making problems visible early enough to act. Skipping it, or doing it generically, is how factory construction projects drift into avoidable delay and cost.
What to include
- Assumption
- Impact if wrong
- Owner
- Validation status
Factory Construction-specific considerations
Tailor the assumptions log to the risks that most often derail factory construction projects:
- Equipment lead times
- Utilities and infrastructure
- Commissioning delays
Example
On a real factory construction project, the assumptions log would be shaped by building a manufacturing plant. In particular, it should explicitly account for the project’s biggest risks — equipment lead times, utilities and infrastructure, commissioning delays — rather than treating them as afterthoughts.