Hi All!
I'm designing a small concrete structure in Brazil (concrete frame).
The typical steel reinforcement used locally is stronger than fy60 used in the US. They use CA50 (= 500MPa), which translates into 72.5ksi steel.
Also, the local code (NBR 6118) allows a minimum steel ratio (Rho) of 0.15% or 0.0015 (= As_min/Ac), when using 25MPa concrete. This value is about half of 200/fy (0.0033) practiced in the US. As a result, when designing in ETABS using ACI 318-14 (code specified), the volume of steel reinforcement returned (min. steel) is about double of what is obtained using local programs (e.g., TQS software). My question is: Is there a way to modify/specify the design Rho in ETABS to 0.0015??
Thank you so much!
I'm designing a small concrete structure in Brazil (concrete frame).
The typical steel reinforcement used locally is stronger than fy60 used in the US. They use CA50 (= 500MPa), which translates into 72.5ksi steel.
Also, the local code (NBR 6118) allows a minimum steel ratio (Rho) of 0.15% or 0.0015 (= As_min/Ac), when using 25MPa concrete. This value is about half of 200/fy (0.0033) practiced in the US. As a result, when designing in ETABS using ACI 318-14 (code specified), the volume of steel reinforcement returned (min. steel) is about double of what is obtained using local programs (e.g., TQS software). My question is: Is there a way to modify/specify the design Rho in ETABS to 0.0015??
Thank you so much!