Calculating Elbows

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Page 64

Calculating Elbows

Mean Radius MR

Long Radius 1 1/2 times callout size

Short Radius equal to call out size (as measured

from the apex of the two welds.

Formulas: OD includes insulation

Heel: (MR+1/2 OD)*1/2 Pi ÷ Number of Mitres

(12X1 1/2 LR)(18-8=10)X1.57÷10=1.57”