Section 54: Two-piece 45 Degree Elbow by Rise

Required Information

• O.D.I.
• Number of degrees
• Rise

Formulas and Measurements

• The Tangent of the Angle times Center Line Radius - Distance equals Rise.

Procedure

1. Step 1

   Draw a horizontal line. Determine an Apex point to the right side and from the Apex, mark the Center Line Radius point which is 1 1/2 times the - Pipe Call-out size (all 45 degree Ells are considered to be Long Radius)

2. Step 2

   Since this is a 45 degree elbow and a two-piece fitting, each angle is 22'/2 degrees. The Tangent of the Angle times Center Line Radius - Distance equals Rise. Calculate the rise and transfer that measurement to the Center Line. Draw a line from the Apex through the Rise point to a - point past the semi-circle

3. Step 3

   Draw a semi-circle using half the O.D.I.. The Apex for the semi-circle will - be where the horizontal and Center Line intersect

4. Step 4

   Trisect the semi-circle into 6 equal parts and label as shown

5. Step 5

   Draw lines up from the horizontal line to all labeled points on the arc

6. Step 6

   Add 3/4" to Line 1 for the bead and ccccrimp allowance

7. Step 7

   Draw the Stretch-out as shown in Figure 2. Add a lap allowance. Center Line Radius