Plan vs Site · 14% Delta.
Persistent site memory updates against perception; next mission inherits the truth.
Domain 06 · Construction & field
A Missed Scan Window Is a Rework Conversation.
Construction sites are the opposite of controlled environments. Weather, sequence drift, sub-contractor activity, materials that aren’t where they were supposed to be. The runtime is what lets a platform inherit the site’s state across visits, so the next crew doesn’t start from scratch.
01 — Environment
The Site Never Matches the Plan.
BIM drawings describe the intended building. Reality describes the constructed one. Between them is a moving gap — weather, sequence drift, sub-contractor activity, materials that aren’t where they were supposed to be.
SiteConstruction · asset · outdoorPlan and reality diverge weekly. Access changes daily.
OperatorsSite crew · inspectorsPractical, time-pressured, sceptical of polished tech that doesn’t survive rain.
TempoMission · weeklyInspection cycles. Findings drive next mission’s priority.
MemoryPer-visit · per-assetSite state inherited across missions; deltas, not snapshots.
02 — Operational signals
Anomalies the Runtime Captures Across Visits.
Visit · 09
Coverage Gap · Sector North.
Anomaly capture, triage with confidence, escalate when finding exceeds policy.
Weather Window Narrows.
Mission re-plan: defer outdoor coverage, prioritise interior. Crew informed before they roll.
Scaffold up Overnight · Planned Path Gone.
Runtime re-plans around the new obstacle; site memory updated for the next visit. Without it, the crew shows up and stands around.
“We mobilised the crew, the platform couldn’t scan because of a tarp, and we ate the day. The PM doesn’t want to hear ‘weather’ twice.”Site engineerGC · UK
“If the platform can’t tell me what changed since last visit, I’d rather send a person with a tape measure.”Project managerCivil infra · DE
02b — Economics
What Field Unpredictability Costs.
Missed scan window
1 mob · €4k+
Crew mobilisation lost when a visit cannot produce usable data.
Plan-vs-reality delta
8–20%
Typical divergence by mid-project; rework cost scales with how late it’s caught.
Per-visit reset cost
1–2 days
Without inherited site memory, every visit reconstructs the previous one’s context.
Weather window
unpredictable
The platform that cannot defer and re-plan loses the day, not the hour.
03 — Operational scenario
The Site Differs From the Plan.
Scenario
Reality Diverges From BIM.
A wall is two centimetres off-axis. A duct cuts through the planned path. A pallet of materials sits where the robot expected open floor. The plan no longer fits.
STEP 01Detect the deviation between observed site and design model.
STEP 02Analyse the difference and its impact on the task envelope.
STEP 03Select an alternative action that respects safety and sequence constraints.
STEP 04Inform the human supervisor with reasoning and recommended next step.
04 — Capabilities
What the Layer Adds on a Construction Site.
/ 01
Interpretation
Interpretation of changing environments — site state versus planned state.
/ 02
Decision-Making
Decision-making without predefined scripts — choose, justify, proceed.
/ 03
Safety
Safe handling of unknown situations, with human escalation when warranted.
/ 04
Field Problem-Solving
Real-time problem solving in the field — closing the gap between drawing and reality.
Construction · Outcome
Robots that stay useful when the site refuses to stay still.