Fire ratings/boards.

Hi,

Just a quick question about what is acceptable here in Ireland for fire resisting structures to compare to my home country. I am from Poland and say for example a ceiling in a 1 hr escape hall would need 2 layer red board, Is this ok here?
1/2 hour ceiling without floor at top would need 2 layer stardard board? but 1 layer if floor at top.
seperating wall between apartment in roof area would built from 1 x red board on each side of stud?

Just learning what is correct here in ireland as am starting work next week with walling company. Have experience in other countries

Also some more questions later

Thank you