# Civil Engineering - RCC Structures Design - Discussion

Discussion Forum : RCC Structures Design - Section 2 (Q.No. 35)

35.

The maximum ratio of span to depth of a cantilever slab, is

Discussion:

18 comments Page 1 of 2.
Roy said:
7 years ago

Type of slab --------> Ratio of span to depth*

Simply supported and spanning in one direction --------> 30.

Continuous and spanning in one direction --------> 35.

Simply supported and spanning in two directions --------> 35.

Continuous and spanning in two directions --------> 40.

Cantilever slabs --------> 12.

Simply supported and spanning in one direction --------> 30.

Continuous and spanning in one direction --------> 35.

Simply supported and spanning in two directions --------> 35.

Continuous and spanning in two directions --------> 40.

Cantilever slabs --------> 12.

Bittu said:
5 years ago

1) Simply supported and spanning in one direction - 30

2) Continuous and spanning in one direction - 35

3) Simply supported and spanning in two directions - 35

4) Continuous and spanning in two directions - 40

5) Cantilever slabs - 12.

2) Continuous and spanning in one direction - 35

3) Simply supported and spanning in two directions - 35

4) Continuous and spanning in two directions - 40

5) Cantilever slabs - 12.

(6)

Adnan said:
8 years ago

For One way Slab.

The maximum ratio of span to a depth of a cantilevered slab is 12.

The maximum ratio of span to a depth of a simply supported slab is 30.

The maximum ratio of span to a depth of a continuous slab is 35.

The maximum ratio of span to a depth of a cantilevered slab is 12.

The maximum ratio of span to a depth of a simply supported slab is 30.

The maximum ratio of span to a depth of a continuous slab is 35.

Abhishek said:
6 years ago

As par IS 456 cl 24.1.

For One way slab L/d ratio is as same as for beam.

For 2 way slab.

35 for simply supported slab.

40 for the continuous slab.

For One way slab L/d ratio is as same as for beam.

For 2 way slab.

35 for simply supported slab.

40 for the continuous slab.

Kirti said:
6 years ago

So when will be the values of the span to depth ratio for cantilever simply supported and continuous slab will be taken as 7, 20&26 respectively.

Amit said:
5 years ago

If span to effective depth is given then take 7, 20, 6.

And if span to overall depth is given then take 12, 30, 35.

And if span to overall depth is given then take 12, 30, 35.

(2)

Mahesh katkar said:
10 years ago

L/d ratio.

Simply supported = 20.

Continuous slab = 26.

Cantilever slab = 7.

Simply supported = 20.

Continuous slab = 26.

Cantilever slab = 7.

Shantu said:
4 years ago

@Amit & @Bittu.

How you got this value?

In IS 456 it is not given.

How you got this value?

In IS 456 it is not given.

(1)

Nikhil said:
4 years ago

Span up to 3.5m.

Depth of slab:

Fe-250.

SSB-35.

Continuous-40.

Depth of slab:

Fe-250.

SSB-35.

Continuous-40.

Sanju said:
6 years ago

@Kirti.

These values are not for slab. They are for beams.

These values are not for slab. They are for beams.

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