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Rigid diaphragm

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I am designing a rigid diaphragm for a structure in a chemical plant.  The 
vertical bracings are the lateral load resisting system.  I have two floors 
 with concrete slab on metal deck.  The metal deck is connected to a series 
 of steel beams.  The chords are at the boundary.  Other floors are of 
steel horizontal bracing and gratings.  This project is in high wind 
location. As I understand that compression chord forces to be resisted by 
steel beam and concrete deck.  Diaphragm shear is transferred to vertical 
elements (in my case the vertical bracings) by collectors and by shear 
friction between the diaphragm and the bracings.

Here are my questions.

1.       Are my understandings correct?

2.      If so, don't I need to check the connection of the chord beams to 
columns for these chord forces?

3.      Don't I need to check the connection between the collector and 
bracing for diaphragm shear ?

Any insight will be greatly appreciated.


Sanchita Guha

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