Stirrup Spacing in Reinforced Concrete Beams: Figure 6
© 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 6. If the maximum shear force falls in Zone IV and is less than or equal to the shear force corresponding to "reduced" maximum spacing, and if the shear force corresponding to regular maximum spacing falls in Zone III, then reduced maximum spacing is needed in Zone IV, the spacing, s = 2Asfyd/Vs, is needed in Zone III up until the point where regular maximum spacing governs, with no web steel needed in Zone I.
First posted 4 June 2012. Last updated: 5 June 2012