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2021 IPC TABLE E103.3(3) FOR ESTIMATING DEMAND

Load (Water supply FUs) GPM (Flush tanks) GPM (Flushometer valves)
1 3.00 0.00
2 5.00 0.00
3 6.50 0.00
4 8.00 0.00
5 9.40 15.00
6 10.70 17.40
7 11.80 19.80
8 12.80 22.20
9 13.70 24.60
10 14.60 27.00
11 15.40 27.80
12 16.00 28.60
13 16.50 29.40
14 17.00 30.20
15 17.50 31.00
16 18.00 31.80
17 18.40 32.60
18 18.80 33.40
19 19.20 34.20
20 19.60 35.00
25 21.50 38.00
30 23.30 42.00
35 24.90 44.00
40 26.30 46.00
45 27.70 48.00
50 29.10 50.00
60 32.00 54.00
70 35.00 58.00
80 38.00 61.20
90 41.00 64.30
100 43.50 67.50
120 48.00 73.00
140 52.50 77.00
160 57.00 81.00
180 61.00 85.50
200 65.00 90.00
225 70.00 95.50
250 75.00 101.00
275 80.00 104.50
300 85.00 108.00
400 105.00 127.00
500 124.00 143.00
750 170.00 177.00
1000 208.00 208.00
1250 239.00 239.00
1500 269.00 269.00
1750 297.00 297.00
2000 325.00 325.00
2500 380.00 380.00
3000 433.00 433.00
4000 525.00 525.00
5000 593.00 593.00