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RE: Bending Embedded Reinforcing Steel

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Nick Blackburn asked:

. > Is there any reason why the bars can't be straight (vertical) out of the
. > stem wall, then field bent once into the slab after whatever process is
. > required under the slab is complete?  Field bending equipment can be quite
. > good as long as you require the use of a hydraulic bender. Now you only 
. > have one bend total with much less risk of fracture in service.

If you stop the shear wall a couple of inches below the bottom of the slab, 
this can probably be accomplished.  However, remember that for a #4 bar, the 
pin diameter is 3 inches and for a 7- or 8-inch slab, field bending the bar 
so that it will be close to the center of the slab will be problematic at 
best.

Except for the top floor, having the 90 deg. bars installed with the vertical 
leg up generally is the easiest solution.  Then the forming problem exists 
only on one floor.

A. Roger Turk, P.E.(Structural)
Tucson, Arizona

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