Building giant Grocon has been charged over a wall collapse that killed three pedestrians in Melbourne's CBD.

A 15-metre-long section of the brick wall fell onto Swanston Street in March last year, killing teenage siblings Alexander and Bridget Jones, and Dr Marie-Faith Fiawoo from France. A Grocon spokesman says Worksafe has filed five criminal charges against the company. Another Melbourne firm, which put up an advertising sign…