Div. B › Part 7 › 7.6 › 7.6.3 — Size and Capacity of Pipes

7.6.3.2 — Hydraulic Load

Copied! ▲ ▼

(1) Except as provided in Sentence (3), the hydraulic load of a fixture or device that is listed in Table 7.6.3.2.A. shall be the number of fixture units given in the Table.

(2) Except as provided in Sentences (1) and (3), the hydraulic load of a fixture that is not listed in Table 7.6.3.2.A. is the number of fixture units listed in Table 7.6.3.2.D.

(3) Where fixtures are supplied with both hot and cold water, the hydraulic loads for maximum separate demands shall be 75% of the hydraulic load of the fixture units given in Tables 7.6.3.2.A. and 7.6.3.2.D. when using a detailed engineering design method.

(4) The hydraulic load of urinals and water closets with direct flush valves shall be the number of fixture units listed in Tables 7.6.3.2.B. and 7.6.3.2.C.

Tables & Figures referenced

Table 7.6.3.2.A : Sizing of Water Distribution Systems⁽¹⁾⁽²⁾ : Forming Part of Sentences 7.6.3.2.(1) to (3) and 7.6.3.4.(2), (3) and (5)

Loading Table 7.6.3.2.A…

Table 7.6.3.2.B : Sizing of Water Distribution Systems for Urinals with Direct Flush Valves : Forming Part of Sentences 7.6.3.2.(4) and 7.6.3.4.(5)

Loading Table 7.6.3.2.B…

Table 7.6.3.2.C : Sizing of Water Distribution Systems for Water Closets with Direct Flush Valves : Forming Part of Sentences 7.6.3.2.(4) and 7.6.3.4.(5)

Loading Table 7.6.3.2.C…

Table 7.6.3.2.D : Hydraulic Loads of Fixtures Not Listed in Table 7.6.3.2.A : Forming Part of Sentences 7.6.3.2.(2) and (3) and 7.6.3.4.(5)

Loading Table 7.6.3.2.D…

OBC Definitions

Defined terms on this page

assembly occupancy

means the occupancy or the use of a building or part of a building by a gathering of persons for civic, political, travel, religious, social, educational, recreational or similar purposes or for the consumption of food or drink.

bathroom group

means a group of plumbing fixtures installed in the same room, consisting of one domestic-type lavatory, one water closet and either one bathtub, with or without a shower, or one one-headed shower.

fixture

means a receptacle, plumbing appliance, apparatus or other device that discharges sewage or clear water waste, and includes a floor drain.

fixture unit

means , when applied to a drainage system, the unit of measure based on the rate of discharge, time of operation and frequency of use of a fixture that expresses the hydraulic load that is imposed by that fixture on the drainage system.

listed

means equipment or materials included in a list published by a certification organization accredited by the Standards Council of Canada.

occupancy

means the use or intended use of a building or part of a building for the shelter or support of persons, animals or property.

private use

means , when applied to plumbing fixtures, fixtures in residences and apartments, in private bathrooms of hotels, and in similar installations in other buildings for a single household or an individual.

public use

means , when applied to plumbing fixtures, fixtures in general washrooms of schools, gymnasiums, hotels, bars, public comfort stations and other installations in which fixtures are installed so that their use is unrestricted.

size

means the nominal diameter by which a pipe, fitting, trap or other similar item is commercially designated.

water distribution system

means an assembly of pipes, fittings, valves and appurtenances that conveys potable water to water supply outlets, fixtures, plumbing appliances and devices from the water service pipe or from a point of entry treatment unit located in the building.

On this page

Top
Tables