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Re: Shear Wall Design

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Thankyou Dennis and Mark for your replies to my shearwall inquiries,

Now perhaps you are someone else can help with this one.

I am currently involved in an earthquake retrofit of an old masonry building.
I have computed the design base shear using the static force procedure sec. 
1630.2, and I have distributed the 
forces according to 1630.5 eq. 30-15.  We have decided to use 5/8" plywood 
sheathing to compliment the old sheathing.  Now I am computing diaphragm 
shear stresses so that I can specify the nailing schedules.  Since I am 
dealing with wood diaphragms I have chosen to use allowable stress design.  My
 question is: In section 1612.3, the load combinations specified have the 
earthquake force E, divided by 1.4 (12-9, 12-10).  Does this mean that I can 
take my computed force at the diaphragm level in question (from 30-15), and 
divide it by 1.4 in order to compute my shear stress distributions for the 
diaphragm?  

Andrew
Arnold Engineering