Elai 
What do we think about this #seismic #retrofit of a historic masonry building?
I think the hybrid style looks great. It's like a big friendly metal facehugger for the creaky old structure.
#Potrero Power Station in #SanFrancisco
eswillwalker@elai I still would not want to be walking beside it during a big one.
woolie@elai I prefer demolition. The Japanese have it right.
EyeEmDave@elai Is that all that's being done? What about the other end of the building?
This looks like they're really worried about that one wall and not much else. Why does the steel go out so far? It's like a quasi flying buttress. In other words, that looks like it's designed for something far heavier than that wall.
This looks like they're really worried about that one wall and not much else. Why does the steel go out so far? It's like a quasi flying buttress. In other words, that looks like it's designed for something far heavier than that wall.
@EyeEmDave masonry construction is only strong vertically and has almost no horizontal strength. The only real sources of horizontal load on a building are wind (usually not a huge deal) and earthquakes (rare, and only in some places on Earth). The building must be stronger against horizontal forces on its long axis, so the short axis is where most of the reinforcement goes
@elai 1st of all it's great that structural retrofits are being done.
Since masonry has a sheer force problem then how does this design help all four sides of the building?
Also, the long axis is where I see more reinforcement with the short getting those 2 beams that only run about 70% of the side wall.
Is there more to this than what's in the picture?
Since masonry has a sheer force problem then how does this design help all four sides of the building?
Also, the long axis is where I see more reinforcement with the short getting those 2 beams that only run about 70% of the side wall.
Is there more to this than what's in the picture?