CodeChronicle
Search Pricing Login Sign up

OBC 2006 › Division B

7.5.7.

Version 0 — in force 31 December 2006

In force
Verified · covered Verified against the 2006-12-31–2007-04-01 consolidation, whose range covers the query date. How to read this

Provenance

OBC 1997 · renumbered from 7.5.6. — Pro

Base · O. Reg. 350/06 · ext← current

Original — base regulation

OBC 2012 · continues as 7.5.7. — Pro

7.5.7. — Minimum Size of Vent Pipes

Content not available for this version.

7.5.7.1. — General

(1) The size of every vent pipe shall conform to Table 7.5.7.1.

Text · e-Laws consolidated snapshot

Table 7.5.7.1. Minimum Permitted Size of Vent Pipe Based on Size of Trap Forming Part of Sentence 7.5.7.1.(1)

Column 1

Column 2

Column 3

Size of Trap Served, in.

Minimum Size of Vent Pipe, in.

Maximum Trap Arm, m

1 ¼

1 ¼

1.5

1 ½

1 ¼

1.5

2

1 ½

1.5

3

1 ½

1.8

4

1 ½

3.0

5

2

4.0

6

2

5.0

7.5.7.2. — Size Restriction

(1) The size of a branch vent, stack vent, vent stack or header shall be not less than the size of the vent pipe to which it is connected.

(2) Every sanitary building drain shall terminate at its upstream end in a stack of at least 3 in. size.

(3) A stack referred to in Sentence (2) shall be a soil stack if one is available and may be a vent stack or waste stack that provides at least 3 in. stack vent and that goes to open air above the roof, either directly or through a header.

Text · e-Laws consolidated snapshot

7.5.7.3. — Additional Circuit Vents and Relief Vents

(1) Except as provided in Article 7.5.7.1. and in Sentence 7.5.3.1.(7), the minimum size of an additional circuit vent or relief vent installed in conjunction with a circuit vent is permitted to be one size smaller than the required size of the circuit vent, but need not be larger than 2 in.

(2) The size of the soil or waste pipe acting as a relief vent in accordance with Sentence 7.5.3.1.(4) shall be in conformance with Tables 7.5.8.3. or 7.5.8.4.v1 or Article 7.5.7.1., whichever size is the largest considering the hydraulic load drained into the soil or waste pipe.

Text · e-Laws consolidated snapshot

7.5.7.4. — Offset Relief Vents

(1) Except as provided in Article 7.5.7.1., the minimum size of an offset relief vent is permitted to be one size smaller than the size of the stack vent.

Text · e-Laws consolidated snapshot

7.5.7.5. — Yoke Vents

(1) Yoke vents required by Sentence 7.5.4.3.(1) are permitted to be one size smaller than the size of the smallest pipe to which they are connected.

Text · e-Laws consolidated snapshot

7.5.7.6. — Vent Pipes for Manholes

(1) The minimum size of a vent pipe that serves a manhole within a building shall be 2 in.

Text · e-Laws consolidated snapshot

7.5.7.7. — Vents for Sanitary Sewage Sumps or Tanks, Dilution Tanks and Macerating Toilet Systems

(1) Except as provided in Sentences (2) and (3), the minimum size of the vent pipe for a sanitary sewage sump or tank, or dilution tank shall be one size smaller than the size of the largest branch or fixture drain draining to the sump or tank.

(2) The size of every vent pipe for a sanitary sewage sump or tank, or dilution tank shall be not less than 2 in., but need not be greater than 4 in.

(3) The size of every vent pipe for a macerating toilet system with a sump or tank shall be not less than 1 ½ in.

Text · e-Laws consolidated snapshot