77 Ill. Adm. Code 890.APPENDIX A
A Plumbing Materials, Equipment, Use Restrictions and Applicable Standards
Section 885
Section 890.APPENDIX A
Plumbing
Materials, Equipment, Use Restrictions and Applicable Standards
Section 890.TABLE H
Horizontal
Fixture Branches and Stacks
Maximum
Number of Drainage Fixture Units (D.F.U.)
That
May be Connected to:
More than 3 Stories in Height
Diameter
of Pipe (inches)
Any
Horizontal Fixture Branch
One
Stack of 3 Stories in Height or 3 Intervals
Total
for Stack
Total
at One Story or Branch Interval
1Ā¼
1
2
2
1
1Ā½
3
4
8
2
2
6
10
24
6
2Ā½
12
20
42
9
3
20
1
30
2
60
2
16
1
4
100
240
500
90
5
360
540
1,100
200
6
620
960
1,900
350
8
1,400
2,200
3,600
600
10
2,500
3,800
5,600
1,500
12
3,900
6,000
8,400
1,500
15
7,000
ā
ā
ā
1
Not over two water closets.
2
Not over six water closets, or more than
two per branch interval or per floor.