For control of cracking, the strength of the steel in the reinforcement has no influence on the amount of reinforcement needed, only the area of the crosssection.
When the reinforcement is assigned a structural role, the fact the steel is stronger, does not mean necessarily that you reduce the amount of reinforcement in the same proportions. Because by the requirements of the minimum amount, in the vast majority of cases, steel does not display even half of the resistance. It is the parameter of steel reinforcement which really improves the mechanical performance in the wall, on account of its ductility, not of the resistance.
For this reason, to prevent cracking and for the transmission of forces it is preferable that the steel has a high percentage of deformation at failure (that is the parameter which determines ductility) than high resistance.
Ghas system
