Clash rules

Two workers within the red threshold in the same enclosure on the same building level, overlapping in time, belonging to different contractors. Same-contractor pairs self-coordinate. same_enclosure makes the rule wall-aware — a worker inside a building does not clash through the wall with one outside. Both sides filter on physical_worker.

Detects when two workers are within the amber warning threshold. Only triggers when workers are in the same enclosure on the same building level, their time ranges overlap, and they belong to different contractors. same_enclosure makes the rule wall-aware (a worker inside a building does not clash through the wall with one outside). Workers from the same contractor are assumed to self-coordinate. Both sides filter on physical_worker category — see Worker Proximity (Critical).

Worker's position intersects a crane's drop zone (critical safety hazard). Same-contractor pairs self-coordinate. Workers under a poured slab (building_level < top_concrete_level) are protected. Filters on physical_worker.

Detects when two crane drop zones overlap, which could lead to conflicting lift operations and potential collisions.

Detects when a worker enters a designated exclusion zone. Exclusion zones are areas where workers should not be present. Filters on physical_worker category.

Detects when a worker is positioned on a road. Workers on roads are at risk from vehicle traffic. Filters on physical_worker category.

Detects when a crane's drop zone intersects a road. Crane operations over roads create hazards for vehicle traffic.

Detects when a worker enters a laydown area belonging to a different contractor. Workers should coordinate with the laydown owner before entering their staging areas. Filters on physical_worker category.

Detects when a crane's drop zone intersects a laydown area belonging to a different contractor. Crane operations over another contractor's staging area create coordination risks and potential material damage.

Detects when a crane's drop zone intersects an active work area belonging to a different contractor. Crane operations over another contractor's work area create safety risks and require coordination.

Detects when a worker enters an active work area belonging to a different contractor. Workers operating in another contractor's work area create coordination issues and potential safety hazards. Filters on physical_worker category.

Detects when two work areas from different contractors overlap spatially and temporally on the same building floor. Overlapping work areas indicate potential coordination conflicts that require resolution.

Detects when two laydown areas from different contractors overlap spatially and temporally on the same building floor. Overlapping staging areas create material handling conflicts and require coordination.

Detects when a work area overlaps an exclusion zone on the same building floor. Active work should not take place in areas marked as no-go zones.

Detects when a laydown area overlaps an exclusion zone on the same building floor. Staging materials in no-go zones creates safety hazards.

Any clashable entity's footprint intersects a feature with clash_category=live_hazard (currently the high_risk_commissioning_area variant). HV / high-risk exposure is universal — applies to workers, plant (active or parked), active areas (work_area, laydown, exclusion), and any other clashable shape; no same_contractor exemption. Side A is unfiltered; side B is category-driven on live_hazard.

Detects when a worker is within the physical footprint of a parked/inactive crane belonging to a different contractor. Even when not operating, cranes are large obstacles that pose risks to workers in close proximity. Workers from the same contractor are assumed to be aware of their own equipment. Filters on physical_worker category.

Detects when an active crane's drop zone intersects the footprint of a parked/inactive crane belonging to a different contractor. Operating over parked equipment creates collision risks and coordination issues. Same- contractor cranes are assumed to self-coordinate.

Detects when an inactive crane's physical footprint intersects a road. Even when not operating, inactive cranes on roads obstruct traffic.

Detects when an inactive crane's physical footprint intersects an exclusion zone. Inactive cranes should not be in exclusion areas.

Detects when an inactive crane's physical footprint intersects a laydown area belonging to a different contractor. Inactive cranes in another contractor's staging area create coordination conflicts.

Detects when an inactive crane's physical footprint intersects a work area belonging to a different contractor. Inactive cranes in another contractor's work zone create coordination issues.

Detects when two inactive crane footprints overlap. Parked cranes occupying the same physical space create congestion and access issues regardless of contractor ownership.

Two entities whose linked permits form an incompatible pair, within the relevant threshold, on the same floor, overlapping in time. The permit x permit matrix below decides which combinations fire and at what severity; contractor-agnostic (an incompatible-permit hazard is physical, not a coordination gap one contractor can self-manage).