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Need this brace meet the Chevon brace Requirment?

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I have a question on design the girders
for a two story structure with diagonal 
concentric braces running from roof level
to the opposite corners of the ground floor.  
They are  intersected in the middle by the 
2nd floor girder.  Seismic Zone #4.

as follow:

 |=========|
 |\       /|
 | \     / |
 |  \   /  |
 |   \ /   |
 |=========|
 |   / \   |
 |  /   \  |
 | /     \ |
 |/       \|
==============

Do I need to design the middle girdle to meet
the UBC's requirement for Chevron brace? 

Thank you in advance,

Sam Chang, SE