CMU Shear Wall Analysis
CMU Shear Wall Analysis
(OP)
I have RAM Structural System v.13. The program allows you to model the structure with concrete, masonry or other shear wall types. I do not have the license that does the concrete shear wall design. However, RAM SS Frame module will analyze any shear wall as long as you input the "correct" properties. The shear wall design from the analysis will be manual.
The program is looking for E, thickness, density and Poissons ratio. For our typical jobs, E=1,350 ksi for f'm=1,500 psi strength masonry. Should I use this E or some percentage reduction for cracking and what about Poisson?
The program is looking for E, thickness, density and Poissons ratio. For our typical jobs, E=1,350 ksi for f'm=1,500 psi strength masonry. Should I use this E or some percentage reduction for cracking and what about Poisson?






RE: CMU Shear Wall Analysis
I don't think Poisson's Ratio matters that much.
DaveAtkins
RE: CMU Shear Wall Analysis
This may not make any difference when all of the lateral resistance is in the form of shear walls. But it could make a big difference in a building with a mixture of shear walls, braced frames and steel moment frames.
The other possibility is modifying the wall thickness to an "effective thickness". Although the thickness of the wall contributes to the wall stiffness, it is also used by RAM for self-weight calculations.
RE: CMU Shear Wall Analysis
Dick