portaat
preferred label: stairs @en
preferred label: trappor @sv
narrower: liukuportaat
in scheme: conceptscheme
related: porrastilat
broader: runkorakenteet
type: Concept

runkorakenteet
preferred label: skeletal structures @en
preferred label: stomkonstruktioner @sv
type: Concept
narrower: portaat

porrastilat
preferred label: staircases @en
preferred label: trapphus @sv
type: Concept
related: portaat

liukuportaat
preferred label: escalators @en
preferred label: rulltrappor @sv
type: Concept
broader: portaat