Round to Square

Page 101

Round to Square

Information Required: True height, square

dimensions, round dimensions

Step 1: Draw an elevation view of the fitting

(include insulation).

Step 2: Draw plan view. Trisect the top right

quarter circle and label as shown.

Step 3: From the plan view, take the

measurements from point A to points 1-4.

Step 4: Draw lines from the apex to these

points. These lines are the slant heights.

Step 5: For the stretch-out, draw a line the

exact length of a square side and label the

ends A. From the elevation view set

dividers, the apex and points 1-4 on the

elevation view. Transfer this length to the

stretch-out by using both A points as an

apex. Swing arcs, where they intersect is

point 1.

Step 6: Set dividers from 1 to 2 on the plan

view and swing arcs to each side of point 1

on the stretch-out.

Step 7: From the elevation view, set

dividers at the apex and points 2-3 on the

elevation view and transfer this measure to

the stretch-out again using both A points as

an apex. Where these arcs meet is point 2.

Step 8: Use the same methods from steps 6

and 7 to form points 3 and 4.

Step 9: Draw an arc to each side of point A

using ½ the measure of a square side.

Step 10: From the elevation view, set the

dividers at the apex and point S4 and

transfer to the stretch-put using points 4 as

the apex points. Where they intersect with

the last arc, are the S points.

Step 11: Connect all points to form half of

the fitting. Add for lap, crimp and bead.