Comparing Concrete Codes
Comparing Concrete Codes
(OP)
Hi all,
i was asked by my boss to find the minimum steel ratio in concrete columns in more than 5 codes. in the ACI i recall its 1%. i am trying my best to look in the web for other codes. up to now i got NOTHING.
if someone can point out where to find the solution keeping in mind a refrence to the source will be very helpfull.
yours
alshaiji
i was asked by my boss to find the minimum steel ratio in concrete columns in more than 5 codes. in the ACI i recall its 1%. i am trying my best to look in the web for other codes. up to now i got NOTHING.
if someone can point out where to find the solution keeping in mind a refrence to the source will be very helpfull.
yours
alshaiji





RE: Comparing Concrete Codes
The minimum reinforcement for a concrete column in Canada is also 1.0%. This is a requirement of CSA 23.3 (clause 10.9.1).
However, this lower limit can be reduced to 0.5% "provided that the axial and moment resistances are multiplied by the ratio pt/0.01." (ie. if the percentage of steel is 0.75% and your calculated axial resistance is 5 kips, you would have to further reduce the axial resistance by 0.75, to 3.75 kips.). This is described in clause 10.10.5.
In practice, the minimum reinforcement is no lower than 1.0%.
CottageGuy
RE: Comparing Concrete Codes
In that case, the squash load of the reinforcement (Fy*Asc) must exceed 15% of the applied (factored) axial load on the column.
RE: Comparing Concrete Codes
RE: Comparing Concrete Codes