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horizontal shear reinforcing in walls

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发表于 2009-9-9 17:04:05 | 显示全部楼层 |阅读模式
horizontal shear reinforcing in walls
folks,
are you required to develop the horizontal shear reinforcing bars at each end of the wall or is it sufficient for the bars to be straight without hooks or closure u bars.
if you need to develope the steel for yield, follow development length requirement. otherwise, straight (most likely in walls).
is it sufficient if the horizontal steel gets developed within the boundary steel (in non-seismic applications, i guess this would be the t/c steel at the ends of walls).
if you need shear reinforcing, it has to be developed.  this is best done by using u-bars at the ends/corners, lapped with the straight bars.
what is the load causing high shear in wall, if not seismic effect? like two way slab, flexural shear rarely a problem, since stress tends to distributed out except at openings, and at around high concentrate loads.
wind is causing high shear in these walls. i am using # 7 shear reinforcing bars
check your design uplate model. your concern does not seem real.
check your design by plate model with proper boundary conditions. your concern (shear force)does not seem real.
kslee,
i don't know how you can possibly know whether slickdeals needs shear reinforcing in his walls, or how much, without knowing anything about his building.  shear walls in buildings often do require shear reinforcing.  i don't find his question unusual at all.
hokie:
i don't know either, so that's why i suggested to double check analysis using fe to utilize two way action. many times, it goes away, or might stick, but worth a try if he hasn't done so. we both know shear reinf is not desirable in wall unless there is no way out.
assuming my model is right and i require shear reinforcing, would you please answer my original question.
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