**glass floor in my house what thickness glass do i use please help***?

hi all im constructing a glass floor in my house ..ive contated various glass dealers who give me conflicting advise im using laminated glass what thickness do i use..the panels are 600mm*600mm and supported on all four sides in size and the frame only sits 1 foot off the ground..next question is can laminated glass be ut at home with a glass cutter…thanks for answering