Masonry Shear Wall Design

[Sanira]

I know I posted this question in other forum. But I didnt get much reponse. So I am reposting it again.

I am trying to design masonry shear wall. My reference is "Reinforced Masonry Engineering Handbook-6th Ed." by Amrhein. Can anyone please tell me what is the difference between the example 6-I and 6-J? Why are they analyzed differently? I have attached the example below. Thanks

 

[r13]

Example 6-I includes DL, LL, WL. Example 6-J includes DL and earthquake load.

 

[Sanira]

retired13 That I can see, but is that the reason they are analysed/designed differently? Why is that so?

 

[r13]

Below is my observations:

The differences I can see is, EX6-I, due to negligible axial load, is governed by the lateral load (W), and its effect (Mw), the wall is designed as a vertical cantilever beam dominated by shear; EXI-J is simply designed as a column, all loads (P, V, M) has equal weight.

You should review the design manual to find out when to use which method, and be familiar with it.