OBC 2006 › Division B
7.5.8.
Version 0 — in force 31 December 2006
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- Edition
- OBC_2006
- Division
- B
- Provision
- 7.5.8.
- Version
- v0
(1) This Regulation comes into force on December 31, 2006.
Read directly from the regulation's own commencement section.
O. Reg. 350/06 · commencement 2.2.1.1(1)
This version stayed in force until the next edition replaced it. What follows is that edition’s base regulation’s commencement — the takeover that ended this one.
(1) Subject to Sentences (2) and (3), this Regulation comes into force on January 1, 2014.
Read directly from the regulation's own commencement section.
O. Reg. 332/12 · commencement 4.4.1.1(1)
This looks wrong
Tell us what is wrong and we will verify & correct our mapping.
- Edition
- OBC_2006
- Division
- B
- Provision
- 7.5.8.
- Version
- v0
(1) This Regulation comes into force on December 31, 2006.
Read directly from the regulation's own commencement section.
O. Reg. 350/06 · commencement 2.2.1.1(1)
This version stayed in force until the next edition replaced it. What follows is that edition’s base regulation’s commencement — the takeover that ended this one.
(1) Subject to Sentences (2) and (3), this Regulation comes into force on January 1, 2014.
Read directly from the regulation's own commencement section.
O. Reg. 332/12 · commencement 4.4.1.1(1)
Provenance
OBC 1997 · renumbered from 7.5.7. — Pro
Base · O. Reg. 350/06 · ext← current
Original — base regulation
OBC 2012 · continues as 7.5.8. — Pro
7.5.8. — Sizing of Vent Pipes
Content not available for this version.
7.5.8.1. — Hydraulic Loads Draining to Wet Vents
(1) The hydraulic load that drains to a wet vent shall conform to Table 7.5.8.1.
(2) When determining the size of a wet vent, the hydraulic load from the most downstream fixture or symmetrically connected fixtures shall not be included.
Text · e-Laws consolidated snapshot
Column 1 | 2 | 3 |
Size of Wet Vent, in. | Maximum Hydraulic Load, Fixture Units | |
Not Serving Water Closets | Serving Not More Than Two Water Closets | |
Fixtures Other Than Water Closets | ||
1 ½ | 2 | N/A |
2 | 4 | 3 |
3 | 12 | 8 |
4 | 36 | 14 |
5 | N/A | 18 |
6 | N/A | 23 |
7.5.8.2. — Individual Vents and Dual Vents
(1) The size of individual vents and dual vents shall be determined using Table 7.5.7.1. according to the largest trap served.
(2) When sizing an individual vent or a dual vent, the length is not taken into consideration.
Text · e-Laws consolidated snapshot
7.5.8.3. — Branch Vents, Headers, Continuous Vents and Circuit Vents
(1) Branch vents, headers, circuit vents and continuous vents shall be sized in accordance with Table 7.5.8.3.
(2) For the purposes of Table 7.5.8.3., the length of a branch vent shall be its developed length from the most distant soil or waste pipe connection to a vent stack, stack vent, header or open air.
(3) For the purposes of Table 7.5.8.3., the length of a header shall be its developed length from the most distant soil or waste pipe connection to open air.
(4) For the purposes of Table 7.5.8.3., the length of a circuit vent shall be its developed length from the horizontal soil or waste pipe connection to a vent stack, stack vent, header or open air.
(5) For the purposes of Table 7.5.8.3., the length of a continuous vent shall be its developed length from the vertical soil or waste pipe connection to a vent stack, stack vent, header or open air.
Text · e-Laws consolidated snapshot
Column 1 | Column 2 | Column 3 | Column 4 | Column 5 | Column 6 | Column 7 | Column 8 | Column 9 |
Total Hydraulic Load Served by Vent, fixture units | Size of Vent Pipe, in. | |||||||
1 ¼ | 1 ½ | 2 | 3 | 4 | 5 | 6 | 8 | |
Maximum Length of Vent Pipe, m | ||||||||
2 | 9 | |||||||
8 | 9 | 30 | 61 | |||||
20 | 7.5 | 15 | 46 | |||||
24 | 4.5 | 9 | 30 | |||||
42 | 9 | 30 | ||||||
60 | 4.5 | 15 | 120 | |||||
100 | 11 | 79 | 305 | |||||
200 | 9 | 76 | 275 | |||||
500 | 6 | 55 | 215 | |||||
1 100 | 15 | 61 | 215 | |||||
1 900 | 6 | 21 | 61 | 215 | ||||
2 200 | 9 | 27 | 105 | 335 | ||||
3 600 | 7.5 | 18 | 76 | 245 | ||||
5 600 | 7.5 | 18 | 76 | |||||
7.5.8.4. — Vent Stacks, or Stack Vents
(1) A vent stack, or stack vent shall be sized in accordance with Table 7.5.8.4. based on,
(a) the length of the vent stack or stack vent, and
(b) the total hydraulic load that is drained to the lowest section of soil or waste stack or stacks served by the vent pipe, plus any additional vent loads connected to the vent stack or stack vent.
(2) For the purposes of Table 7.5.8.4., the length of a stack vent or vent stack shall be its developed length from its lower end to open air.
(3) The minimum size of vent stack or stack vent shall be one-half the size of the soil or waste stack at its base.
(4) A stack vent serving a wet vent stack that is over 4 storeys high shall extend the full size of the wet vent to open air.
(5) Every sanitary building drain shall be provided with at least one vent that is not less than 3 in. in size.
Editor's note
In Table 7.5.8.4., the Column 3 heading is filed in O. Reg. 350/06 as the two-word 'Water Occupied Area'; this map reproduces the source as filed. The e-Laws consolidation drops the space between the words, rendering it as 'Water OccupiedArea'. This change was not enacted by an amending regulation.
Text · e-Laws consolidated snapshot
| Column 1 | Column 2 | Column 3 | Column 4 | Column 5 | Column 6 | Column 7 | Column 8 | Column 9 | Column 10 | Column 11 | Column 12 |
| Size of Soil or Waste Stack, in. | Total Hydraulic Load Being Vented, fixture units | Water Occupied Area | Size of Stack Vent or Vent Stack, in. | ||||||||
|
|
|
| 1 ½ | 2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
|
|
|
| Maximum Length of Stack Vent or Vent Stack, m | ||||||||
| 3 | 10 | 0.15 | 13 | 46 | 317 | Not Limited | |||||
|
| 21 | .20 | 10 | 33.5 | 247 |
| |||||
|
| 53 | .25 | 8 | 28.5 | 207 |
| |||||
|
| 102 | .29 | 7.5 | 26 | 189 |
| |||||
| 4 | 43 | 0.15 | Not Permitted | 10.5 | 76 | 299 | Not Limited | ||||
|
| 140 | .20 |
| 8 | 61 | 229 |
| ||||
|
| 320 | .25 |
| 7 | 52 | 195 |
| ||||
|
| 540 | .29 |
| 6.5 | 46 | 177 |
| ||||
| 5 | 190 | 0.15 | Not Permitted | 25 | 97.5 | 302 | Not Limited | ||||
|
| 490 | .20 |
| 29 | 76 | 232 |
| ||||
|
| 940 | .25 |
| 16 | 64 | 204 |
| ||||
|
| 1 400 | .29 |
| 15 | 58 | 180 |
| ||||
| 6 | 500 | 0.15 | Not Permitted | 10 | 39.5 | 122 | 305 | Not Limited | |||
|
| 1 100 | .20 |
| 8 | 30.5 | 94.5 | 238 |
| |||
|
| 2 000 | .25 |
| 6.5 | 25.5 | 79 | 201 |
| |||
|
| 2 900 | .29 |
| 6 | 23.5 | 73 | 183 |
| |||
| 8 | 1 800 | 0.15 | Not Permitted | 9.5 | 29 | 73 | 287 | Not Limited | |||
|
| 3 400 | .20 |
| 7 | 22 | 58 | 219.5 |
| |||
|
| 5 600 | .25 |
| 6 | 19 | 49 | 186 |
| |||
|
| 7 600 | .29 |
| 5.5 | 17 | 43 | 70.5 |
| |||
| 10 | 4 000 | 0.15 | Not Permitted | 9.5 | 24 | 94.5 | 292.5 | Not Limited | |||
|
| 7 200 | .20 |
| 7 | 18 | 73 | 225.5 |
| |||
|
| 11 000 | .25 |
| 6 | 15.5 | 61 | 192 |
| |||
|
| 15 000 | .29 |
| 5.5 | 14 | 55 | 174 |
| |||
| 12 | 7 300 | 0.15 | Not Permitted | 9.5 | 36.5 | 116 | 287 | ||||
|
| 13 000 | .20 |
| 7 | 28.5 | 91 | 219.5 | ||||
|
| 20 000 | .25 |
| 6 | 24 | 76 | 186 | ||||
|
| 26 000 | .29 |
| 5.5 | 22 | 70 | 152 | ||||
| 15 | 15 000 | 0.15 | Not Permitted | 12 | 39.5 | 94.5 | |||||
|
| 25 000 | .20 |
| 9.5 | 29 | 73 | |||||
|
| 38 000 | .25 |
| 8 | 24.5 | 62 | |||||
|
| 50 000 | .29 |
| 7 | 22.5 | 55 | |||||
7.5.8.5. — Lengths for other Vent Pipes
(1) When sizing an additional circuit vent, offset relief vent, relief vent, yoke vent and the vent pipe for an interceptor, dilution tank, sanitary sewage tank or sump, or manhole, length is not taken into consideration.
Text · e-Laws consolidated snapshot
Provenance
OBC 1997 · renumbered from 7.5.7. — Pro
Base · O. Reg. 350/06 · ext← current
Original — base regulation
OBC 2012 · continues as 7.5.8. — Pro