fire-resistance rating(материала в ед. времени – АД); fire resistance rating(материала – A fire-resistance rating typically means the duration for which a passive fire protection system can withstand a standard fire resistance test. This can be quantified simply as a measure of time, or it may entail a host of other criteria, involving other evidence of functionality or fitness for purpose. wiki Alexander Demidov); fire-resistance rating(материала в ед. времени Alexander Demidov)