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Illinois Administrative Code (Last Updated: March 27, 2024) |
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TITLE77. PUBLIC HEALTH |
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PART890. ILLINOIS PLUMBING CODE |
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SUBPARTM. INSPECTIONS, TESTS, MAINTENANCE AND ADMINISTRATION |
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Section890.APPENDIX A. Plumbing Materials, Equipment, Use Restrictions and Applicable Standards |
§890.TABLE G. Building Drains
Latest version.
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Diameter of Pipe (inches)
Maximum Number of Drainage Fixture Units (D.F.U.) That May be Connected to Any Portion of the Building Drain
Grade per Foot
1/16 Inch
⅛ Inch
¼ Inch
½ Inch
4
−
180
216
250
5
−
390
480
575
6
−
700
840
1,000
8
1,400
1,600
1,920
2,300
10
2,500
2,900
3,500
4,200
12
3,900
4,600
5,600
6,700
15
7,000
8,300
10,000
12,000