The Ontario Building Code | Conversion of Fixture Units to Litres and Gal/min

7.4.10.5. Conversion of Fixture Units to Litres and Gal/min

(1) Except as provided in Sentence 7.4.10.3.(2), where the hydraulic load is to be expressed in litres, fixture unitsshall be converted as follows:

(a) when the number of fixture units is 260 or fewer, the load is 2 360 L, and

(b) when the number of fixture units exceeds 260, the load is 9.1 L for each fixture unit.

(2) Where the hydraulic load is to be expressed in gal/min, fixture units shall be converted in accordance with Table 7.4.10.5.

Table 7.4.10.5.
Maximum Probable drainage Rate, gal/min

Forming Part of Sentence 7.4.10.5.(2)

Item	Column 1	Column 2	Column 3	Column 4
	Fixture Units in service	Fixture Units	Fixture Units	Fixture Units
		Col. 1	Col. 1 × 10	Col. 1 × 100
1.	100	53	174	900
2.	90	51	164	835
3.	80	49	153	750
4.	70	47	140	680
5.	60	44	128	600
6.	50	41	115	520
7.	40	38	102	435
8.	30	33	88	350
9.	20	27	72	262
10.	10	21	53	174