Civil Engineering - RCC Structures Design - Discussion
Discussion Forum : RCC Structures Design - Section 1 (Q.No. 2)
2.
The maximum area of tension reinforcement in beams shall not exceed
Discussion:
36 comments Page 1 of 4.
Shambhoo Kant Jha said:
8 years ago
The maximum area of tension reinforcement should not exceed 4%. It is because of congestion of reinforcement & also proper compaction of concrete will not be possible.
Further, excess reinforcement will cause concrete or brittle failure which is sudden & without notice which causes huge loss of property/manpower. Hence, the restriction of 4% in tension zone.
Further, excess reinforcement will cause concrete or brittle failure which is sudden & without notice which causes huge loss of property/manpower. Hence, the restriction of 4% in tension zone.
Amit kumar said:
8 years ago
If the % age of tension steel is more than 4 than the failure of concrete occur early than the failure of steel. Thus if this happens the failure occurs immediately as the concrete has no yield point it collapse immediately which is not safe. Thus Ast should not be more than 4%.
SAMEER said:
7 years ago
If the area of steel is greater than 4% than the bonding between concrete and steel can nog occur because it requires large dia bars that has less surface area and hence weaken the structure.
Hassan Ahmed Abdulle said:
5 years ago
According to BS.8110, the maximum area of tension reinforcement of beams should not be more than %4. Because if more than that is used, it prevents the required compaction.
Anil pawar said:
1 decade ago
According to Indian standard code: the minimum area of tension reinforcement shall be not less that (is 456:2000. Pg no. 46) so should not be exceed 4%.
Sandipan mukherjee said:
9 years ago
According to the clause 26.5.1.1 b) maximum reinforcement-the maximum area of tension reinforcement shall not exceeds 0.04 bD.
So, 0.04 bD/bD*100 = 4%.
So, 0.04 bD/bD*100 = 4%.
Utkarsh said:
8 years ago
@Mukesh.
You can calculate minimum tension requirement in fe500 by the formula given by the code (Cl.26.5.1).
i.e; (Ast)min.= .85bd/fy.
You can calculate minimum tension requirement in fe500 by the formula given by the code (Cl.26.5.1).
i.e; (Ast)min.= .85bd/fy.
Sanjay ghadge said:
1 decade ago
If area of steel is more than 4% it creates difficulties in compaction which results in voids & ultimately weakens the section.
Mohammad yasir said:
7 years ago
Minimum :It is. 85/yeild strength (%) of gross sectional area/
Maximum :6% and can be reduced to 4% under special consideration.
Maximum :6% and can be reduced to 4% under special consideration.
Manas Nayak said:
9 years ago
According is 456:2000 maximum area of tension reinforcement in beams shall not exceed 4% of total gross cross sectional area.
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