Just interested to know what kind of materia for big buildings main columns is safe/safest. I read a surprising article saying that using (thick) timber is good. It is known that steel structure does not hold if there is bigger fire: There is a risk of building collapsing (say after 6 hours fire) because steel loses its strength. I wonder why are they using so much steel because of this risk (according to history steel can give up strength too much even after 1-2 hours fire)... Timber with some kind of coating best? thanks
- posted
14 years ago