Alternate Formula for Equal Tee

Page 72

Alternate Formula for

Equal Tee

Step 1: Draw a 90-degree angle

Step 2: Using half the ODI set the dividers at

the apex and swing a 90-degree arc from

the vertical line to the base line

Step 3: Divide the arc into equal number of

parts by bisecting or trisecting (in this case

3: larger tees require more divisions).

Step 4: Draw 90 degree vertical lines from

the intersected points to the base line and

number these points as shown

Step 5: Set dividers from 1 to 2 on the arc

and on line 1, do 3 walk-ups and mark the

top point. On line 2, do 2 walk-ups and on

line 3 do 1 walk-up.

Steps 6: Connect all the points with point 4

from half the pattern.

Step 7: Cut out the pattern and for the stem

portion of the fitting cut half the total

circumference and place the pattern on the

metal

Step 8: For the other half of the fitting allow

for laps on both ends

Step 9: For the body portion of the fitting

cut half the total circumference and place

the pattern on the metal

Step 10: For the other portion of the fitting,

add lap allowances at both ends.