CONCRETE MOMENT FRAME RETROFIT
CONCRETE MOMENT FRAME RETROFIT
(OP)
This is about an existing three story concrete moment frame building. The beams and columns are not adequate to handle the seismic forces. I need design references and any guidance on Jacketing of columns with 1. Concrete, 2. Fiber. Also, how do I retrofit beams. Appreciate in advance any help that you can give me.






RE: CONCRETE MOMENT FRAME RETROFIT
RE: CONCRETE MOMENT FRAME RETROFIT
RE: CONCRETE MOMENT FRAME RETROFIT
RE: CONCRETE MOMENT FRAME RETROFIT
FEMA 172 shows a diagram of a beam being jacketed by reinforced concrete. This would probably be very difficult to actually implement b/c of all of the conflicts with architectural items. You would also have to drill holes in the slab in order to get the beam's new stirrups to "close."
Putting in shear walls would seem to be the simplest method to me. But, you also have to watch out because shear walls are not as ductile as moment frames and thus the seismic forces will be larger. Also, extra foundations will be required.