Civil Engineering - RCC Structures Design - Discussion

I too think that the right answer is option C.

Yes, the right answer is C.

In case of load on simply supported slab the effective length will be considered from the one edge to another edge of the slab because the slab is not continuous (in simply supported slab the ends will be considered as free or pinned But not fixed or continuous). So the whole length of the slab will be affected by the load. So the effective length of the slab is equal to internal wall to wall distance + the length of the slab which is mounted on the wall on both sides.

It's clear span+depth of slab or Clear span+wall thickness. Least of two will be adopted for design consideration.

I think it is Clear span + effective depth of the slab.

1) Clear distance+ effective depth.

2) Centre to centre distance.

A as per IRC-5 for Bridges.

Clear span + effective depth of the slab.

Clear Span + Width of the support (wall or column)
whichever is less.
Or
Clear Span + 2 * Half Width of the support (wall or column).

Answer should be C, according to IS 456:2000, page 34, clause 22.2 (a).

Effective span = clear span plus half-thickness of support on one side half another side.