Source: United States & Canada – South China Morning PostFrom sinkholes to concrete-weakening saltwater intrusion, theories abound on what caused a Florida beachside condominium tower to collapse with no warning.The Champlain Towers South building in Surfside that partially went down was in the midst of its 40-year recertification process, which requires detailed structural and electrical inspections.Surfside Mayor Charles Burkett said in an interview on Friday said he wasn’t sure the inspection had been completed but may contain vital clues to the…Read More