Bend Deduction

Written by Jerry Ratzlaff on . Posted in Structural Engineering

bend allowance 2bend allowance angle 1Bend deduction, abbreviated as BA, is the amount of material needed to be removed to achieve the correct length.


Bend deduction formula

\(\large{ BD = 2 \; \left( r \;+\; t \right)  \; tan \; \left( \frac{\theta}{2} \;-\; BA \right)  }\)   


 Units English Metric
\(\large{ BD }\) = bend deduction \(\large{in}\) \(\large{mm}\)
\(\large{ BA }\) = bend allowance \(\large{in}\) \(\large{mm}\)
\(\large{ \theta }\) (Greek symbol theta) = bend angle \(\large{deg}\) \(\large{rad}\)
\(\large{ r }\) = inside radius \(\large{in}\) \(\large{mm}\)
\(\large{ t }\) = material thickness \(\large{in}\) \(\large{mm}\)


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Tags: Strain and Stress Equations Welding Equations