Masonry Shear Walls - ASD vs Strength Design
Masonry Shear Walls - ASD vs Strength Design
(OP)
When designing a particular masonry shear wall using Strength Design (2005 MSJC Ch. 3) I have sufficient shear and flexural capacity, but I get hung up on a check for the requirement & design of special boundary elements of MSJC Section 3.3.6.6 – 3, Mu/(Vu*lw) <= 3.0.
I am hung up because I want to avoid requiring any special boundary elements so I tried designing the wall using ASD design (2005 MSJC Ch 2). Once again, sufficient shear and flexural capacity, but I do not see a check for any special boundary elements which leads me to believe my wall design is okay. I am not the smartest person you ever met so here are perhaps my simple questions.
1. Why is there not a similar check for special boundary elements in ASD design?
2. Is there another special requirement in ASD design that I am missing?
3. If ASD design doesn't have any special requirements I think I am going to typically use that in lieu of Strength Design, any reason not to?
Thanks in advance for any help & advice.
I am hung up because I want to avoid requiring any special boundary elements so I tried designing the wall using ASD design (2005 MSJC Ch 2). Once again, sufficient shear and flexural capacity, but I do not see a check for any special boundary elements which leads me to believe my wall design is okay. I am not the smartest person you ever met so here are perhaps my simple questions.
1. Why is there not a similar check for special boundary elements in ASD design?
2. Is there another special requirement in ASD design that I am missing?
3. If ASD design doesn't have any special requirements I think I am going to typically use that in lieu of Strength Design, any reason not to?
Thanks in advance for any help & advice.






RE: Masonry Shear Walls - ASD vs Strength Design
RE: Masonry Shear Walls - ASD vs Strength Design
2. There is a 1.5 factor required, CBC and IBC I believe, to be applied to the seismic shear force.
3. I design lots of masonry, unless I can't get ASD to work I never use strength for in-plane design. Out-of plane I use strenght.
RE: Masonry Shear Walls - ASD vs Strength Design
RE: Masonry Shear Walls - ASD vs Strength Design