Civil Engineering - RCC Structures Design - Discussion

Discussion Forum : RCC Structures Design - Section 2 (Q.No. 11)
In a simply supported slab the minimum spacing of distribution reinforcement, should be four times the effective thickness of the slab or
20 cm
30 cm
40 cm
50 cm
60 cm
Answer: Option
No answer description is available. Let's discuss.
28 comments Page 1 of 3.

B.Singh said:   10 months ago
According to IS: 456 (2000),

In a simply supported slab, the minimum spacing of distribution reinforcement should be:

Maximum of (4d, 60 cm)

Important Points:
Distribution steel is provided to distribute the load in a longitudinal direction.
It also takes care of shrinkage along the transverse direction and temperature effect.

Minimum spacing of distribution steel is governed by proper anchorage of reinforcement with concrete whereas maximum spacing is governed by the independent behavior of bars.

Note: Here, the question is asking for minimum spacing, not maximum spacing (5d, 45 cm).

Nazir said:   11 months ago
It's only defined upon the length of the slab divided by 20.

Nazir said:   11 months ago
For simply supported slab thickness L by 20.

MJM GCEKalahandi said:   2 years ago
Answer Should be 450mm.

PraBhu said:   2 years ago
Yes, right @Aryan.

It;s as pr 456:2000.

Vikas Guleria said:   2 years ago
It's 5d or 45cm.

Aryan said:   4 years ago
@Khan @Mukesh ogres.

Min thickness of slab 125mm.
As per IS 456:2000.
For distribution reinforcement min spacing 4d or 450mm whichever is less.

Don said:   4 years ago
5d or 450 mm whichever is small.

Vijay Paurush said:   4 years ago
I think it should be 30cm.

Aryan said:   4 years ago
The minimum thickness of slab 125mm.

And spacing in case of distribution reinforcement 5d or 450mm whichever is less.

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