The Chicago Plumbing Code

Table § 18-29-706.3

Fittings for Change in Direction

Type of Fitting Pattern

Change in Direction

Horizontal to vertical

Vertical to horizontal

Horizontal to horizontal

Sixteenth bend

X

X

X

Eighth bend

X

X

X

Sixth bend

X

X

X

Quarter bend

X

X a

X a

Short sweep

X

X a, b

X a

Long sweep

X

X

X

Sanitary tee

X c

Wye

X

X

X

Combination wye and eight bend

X

X

X

For SI: 1 inch = 25.4 mm.

a) The fittings shall only be permitted for a 2-inch or smaller fixture drain.

b)Three inches and larger.

c) For a limitation on double sanitary tees, see Section 706.3.