Stirrup Spacing in Reinforced Concrete Beams: Figure 9
© 2012 Jonathan Ochshorn. This discussion of web steel (stirrups) in reinforced concrete beams supplements a free online stirrup spacing calculator that I developed.
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Figure 9. If the maximum shear force falls in Zone IV and if the shear force corresponding to "reduced" maximum spacing is in Zone III, then the spacing, s = 2Asfyd/Vs, is needed until regular maximum spacing begins in Zone III, with no web steel needed in Zone I.
First posted 4 June 2012. Last updated: 5 June 2012