I want to build bedroom loft of 2 feet extend from wall. The side walls are 11'

         You should make recess of 4.5'' in 9'' thick wall and 4.5'' in 4.5'' wall and 4.5''  in the 11'-2'' wall. The thickness of slab should be 3'' with 12 or 10 mm diameter main bar of length 11'9'' @ 6'' c/c and shorter side bar 10 or 8 mm @ 6'' c/c. This is not cantilever. It may be cantilever if laid during construction.

Sir,

Thank you for the reply.

Regards

- Surinder