complete set of elements and components that are assembled in order to separate an internal occupied space from the external environment, thus creating a comfortable, habitable interior, integrated elements of a building which separate its interior from the outdoor environment, kõik elemendid ja komponendid, mis on ühendatud tervikuks eesmärgiga eraldada hoone sisemus väliskeskkonnast, luues nii mugava, elamiskõlbliku siseruumi