The Ontario Building Code | Hydraulic Loads from Fixtures with Continuous or Semi-continuous Flow

7.4.10.3. Hydraulic Loads from Fixtures with Continuous or Semi-continuous Flow

(1) Except as provided in Sentence (2), the hydraulic load from a fixture that produces a continuous flow, such as a pump or an air-conditioning fixture, is 31.7 fixture units for each litre per second of flow.

(2) Where a fixture or equipment that produces a continuous or semi-continuous flow drains to a storm drainage system, the hydraulic load from the fixtureis 900 litres for each litre per second of flow.

(3) The hydraulic load from a fixture or equipment that produces a semi-continuous flow shall conform to Table 7.4.10.3.

Table 7.4.10.3.
Maximum Permitted Hydraulic Load from Fixtures with Semi-continuous Flows

Forming Part of Sentence 7.4.10.3.(3)

Item	Column 1	Column 2	Column 3
	Maximum Permitted Flows by Trap Size
	Trap Size, in.	Flow, L/s	Hydraulic Load, fixture units
1.	1 ½	0.00 - 0.090	3
2.	2	0.091 - 0.190	6
3.	3	0.191 - 0.850	27
4.	4	0.851 - 5.700	180