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Choosing which method for Seismic Analysis (Eqiv. Static Procedure v. Dynamic Analysis)

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Mohzus

Civil/Environmental
May 1, 2015
12
CA
Hello!

I'm looking for some clarification on when to use either method of analysis (in NBC 2015) when dealing with wood. An example would be a 5-storey irregular wood structure:

1. From my understanding is that Equiv. Static Procedure can be followed if it meets the criteria outlined in Clause 4.1.8.7(1), but I've been told that doing a dynamic analysis (spectural response method) on wood is not applicable because it's neither rigid or completely flexible. Instead using the Eqiv. Static Procedure with Flexible and Rigid method of analysis for wood structures (such as WoodWorks software or by hand). Leaving only dynamic analysis for steel and concrete structures since they are rigid bodies. Is this correct? and if so, where does the NBC 2015 comment on wood structures being able to ignore dynamic analysis even with irregularities.

2. The Eqiv. Static Procedure is laid out clearly in the NBC 2015, but I haven't used the dynamic analysis method before. What does that look like? Is it completely software based using ETABS? or is there a procedure by hand that can be followed?



Forgive me for I'm a new EIT on the scene and wasn't lucky enough to have a seismic course offered. Any help is greatly appreciated!

Thanks!
 
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