hari ks

1st floor roof slab 1m extend cheytitund without any support

yes pattum.... 60cm start cheyunnidayh oru concealed beamum koody kodukanam.... extension length inner slabilum athey neelam pokanam... total 120cm or 125cm

cantelever illa . existing slabil 8mm kambi ittittund. but bottom support illathe 60 cm extend chyan pattuo. load evide varum.

with cantilever beam you can extent the slab it's depending upon projection of slab.

2 reetiyilum cheyyaamm... cantilever with over head beam..you better consult it with a structural engineer