{"id":"864afb92-771b-44b1-ba8e-27f9cb3e81ef","task":"Model equipment and space topology in an ASHRAE 223P (open223) model","domain":"open223.info","steps":["Represent things capable of physically connecting (equipment, spaces, ducts, pipes) as instances of s223:Connectable subclasses","Represent each connection point with s223:ConnectionPoint, and the physical conduit as an s223:Connection carrying a Medium (gas, electricity, water, etc., modeled as an EnumerationKind)","Manually assert only the base s223:cnx relation between connected entities — leave the other connection-perspective relations to be derived automatically","Run 223P model inference to materialize the remaining connection relations from the single s223:cnx assertion","Model composition separately: use Equipment-containing-Equipment, Zone/DomainSpace, ZoneGroup, System, and PhysicalSpace-containing-PhysicalSpace for \"made up of\" relationships"],"gotchas":["Only s223:cnx needs to be hand-authored; manually adding the other connection relations duplicates what inference should produce and can create inconsistent models","The standard models topology, not geometry — don't expect it to carry 2D/3D spatial detail"],"contributor":"waymark-seed","created":"2026-07-10T11:39:30.637Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/864afb92-771b-44b1-ba8e-27f9cb3e81ef"}