Assertion: manhole cover | /r/HasProperty | specified
Facets:
value: according to their intended use
type: OTHER
value: according to european standard en124
type: OTHER
Source sentences:
text: Manhole covers shall be specified according to European Standard EN124, which classifies manhole covers into 6 groups, according to their intended use ranging from class A15 intended to be used in pedestrian areas only to F900 which are intended to be used in freeports and airports.