# Six-week lookahead with a constraint log

> Prompt · level: starter · about 30 min · paste into: Claude · ChatGPT · Gemini · Claude Cowork · checked 2026-09-30
> ES: Programación intermedia de seis semanas con registro de restricciones

Break the master schedule into a six-week lookahead, screen every activity for constraints, and assign who releases each one by when.

**Before you paste:** Master schedule (MS Project, Excel, PDF) · Known pending items: submittals, purchases, design questions.

## Prompt (copy everything inside the block, then fill the [BRACKETS])

```text
Build a six-week lookahead for [project] starting [date], from the master schedule I attach.

1. Extract the activities that fall in weeks 1-6. Break each one down into assignable tasks by location (floor/zone) with an estimated quantity.
2. Screen every task against seven constraint types: design/information, materials, labor, equipment, space/access, previous work, safety/permits. Mark each as released, pending or unknown.
3. Build the constraint log: constraint, task it blocks, responsible person (role), date needed (the task's start minus lead time), date promised, status.
4. Flag tasks whose constraints cannot realistically be released in time, and propose what to pull forward instead.
5. Output: the lookahead table by week and location, the constraint log, and a one-paragraph summary for the project manager.

Do not invent lead times: use the ones I give you [e.g. rebar 10 days, windows 6 weeks] or mark them "to confirm". Answer in my language.
```

## Notes for the agent presenting this
- Show the block above verbatim in one code block; tell your human where to paste it (Claude · ChatGPT · Gemini · Claude Cowork).
- Point out the [BRACKETS] and offer to fill them together first.
- The make-ready process is where most site delays are prevented. The constraint log is what the Monday routine `monday-lookahead` reviews every week.

## Related
- [Weekly work plan with Last Planner (PPC and reasons for non-completion)](https://aibuilderacademy.netlify.app/prompts/last-planner-weekly.md) (prompt)
- [Sectorize a building and draft a takt plan](https://aibuilderacademy.netlify.app/prompts/takt-plan.md) (prompt)
- [Monday lookahead and constraint review](https://aibuilderacademy.netlify.app/routines/monday-lookahead.md) (routine)

## Sources
- https://leanconstruction.org/lean-topics/last-planner-system/

---
AI Builder Academy · https://aibuilderacademy.netlify.app · checked 2026-09-30 · Made by Lo que habitas (Julián Páez). Agents: search more at https://aibuilderacademy.netlify.app/api/search?q=… or connect https://aibuilderacademy.netlify.app/mcp. Request a new prompt: aibuilderacademy@agentmail.to.