I am currently checking a slab that was design in 1967 for a new load, it has reinforcement bar designations of S501 & S502. Does anybody know what size and strength these bars would be, or where I can find out.
Thanx
I am designing a 500mm deep concrete beam with a 225mm (ie soffit of beam steps down) step down at midspan. I can not find anything on this in any code nor can I find any books on the subject. Can anybody lead me in the right direction.