Assertion: vault's construction | /r/HasProperty | the greatest importance
Facets:
Source sentences:
text: there was no great difficulty in the construction of these vaults, but in the Roman Baths of Caracalla the tepidarium had a span of 80 feet (24 m), more than twice that of an English cathedral, so that its construction both from the statical and economical point of view was of the greatest importance.