We should start to think how to prevent collapse due to vulnerability of existing building.

1. DETERIORATION OF CONCRETE OR
INADEQUATE CATATTERISTICS?
WHAT WE REALLY KNOW, AND WHAT WE THINK TO KNOW,
IN A WORLD FULL OF TECHNOLOGY, WHY WE ARE NOT ABLE TO SAY THAT A STRUCTURE IS NOT CAPABLE TO DO HIS JOB ANYMORE?

2. IS THE CONCRETE OF AN EXISTING STRUCTURE
SOMETHING THAT WE CAN CALL HOMOGENEOUS?

3. PERFECT ADHERENCE
• Is the adherence between steel rebars and concrete of an existing building
something that we can really call “PERFECT”?

4. STEEL REBARS AND CONCRETE, MANY YEARS AFTER THEIR FIRST
KISS, ARE STILL A GOOD COUPLE ?

5. ALWAYS KEEP IN MIND THAT AFTER YEARS, CONCRETE
DEGRADE, STEEL DEGRADE, ADHERENCE CAN DEGRADE, BUT
THE LOADS WHICH SUBJECT YOUR STRUCTURE HAVE MORE
PROBABILITY TO BE HIGHEST
ENG. ALESSIO VERDE