Tiers tread and riser dimensions

Hello everybody,

I write in English because not yet proficient in German, nevertheless answer in German is ok. I am interested if for tiers steps (such as sports hall, theater, cinema and similar) you have a rule of thumb regarding tread length / riser height. Here in Romania we have 2risers + tread = min. 62 cm / max. 64 cm, but it is not feasible to apply to tiers as well.
Please advise.