# Civil Engineering - RCC Structures Design - Discussion

Discussion Forum : RCC Structures Design - Section 1 (Q.No. 4)
4.
The minimum number of main steel bars provided in R.C.C.
rectangular columns is 4
circular columns is 6
octagonal columns is 8
all the above.
Explanation:
No answer description is available. Let's discuss.
Discussion:
23 comments Page 1 of 3.

Surajit biswas said:   6 months ago
Can we provide an unequal number of bars (eg- 7 nos, 9 nos, 11 nos, 13nos) in a column? if not why? Please explain to me.

Rajendra D said:   3 years ago
It is mentioned in IS 456:2000, clause 26.5.3.1 (c and e).

Shubham Arbat said:   5 years ago
The minimum vertical space of the main reinforcement in RCC beam is the diameter of the larger bar or two-third the nominal maximum size of coarse aggregate.
(1)

Sameer Sopori said:   5 years ago
@Kiran.

For circular column you can not use 4 bars, For Circular column, you need minimum 6 bar.

And for Rectangular shape of the column, you can use 4 bars minimum.

Kiran c said:   6 years ago
4 number of bars.

Anuj said:   7 years ago
How many number of minimum main bars provided in a RCC beam?

(a) 2Nos
(b) 3Nos
(c) 4Nos
(d) 6Nos
(1)

Ashok said:   7 years ago
What is the minimum dia of bar used as a surface reinforcement?