Thank you for your input.
Put SDC aside, my question #2 is related to my question #1. i.e. Is using the gross section properties the reason why 0.2fc is used instead of higher figure say 0.9fc? My understanding is that boundary element is required to restraint vertical bars to prevent from...
Can anyone please help me understand the force-based boundary element requirement from ACI 318 shown as below?
My questions are as below,
1. Why do we use the gross section properties to determine the extreme fiber compressive stress even if the extreme fiber tensile stress is greater than the...