According to the ACI Code stiffness modifiers (modifiers used to reduce the moment of inertia) are used for each structural elements for example 0.7 for columns and 0.35 for beams...
For those who do seismic and/or wind design according to Eurocode where are these modifiers used and if they are not clearly available like in the ACI Code how does the code apply these modifiers ? does eurocode use a coefficient to reduce the compressive strength of the concrete instead of using these coefficient?
The American Concrete Institute (ACI) and Eurocode are two widely used design codes for structural concrete. When it comes to stiffness modifiers, there are some differences between the two codes in terms of the methodologies and factors used to account for the stiffness of various structural elements. Here are the key differences:
It's important to note that the specific requirements and guidelines related to stiffness modifiers may vary between different versions and editions of the ACI Code and Eurocode.
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