Make sure that the selected radius (R1) of miter bend is greater than the calculated (Rc) of the miter bend, If not, then increase the selected radius (R1) to meet the required condition "R1>Rc". Now calculate Pm2 based upon the Final selected radius (R1) to see Pm2 > Pdesign, use equation (4b) for this calculation.
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90 degree miter bend formula
