Wet Venting

Transcription

Wet Venting

ONTARIO PLUMBING
INSPECTORS ASSOCIATION INC.
In the public service since 1920
Wet Venting
Incorporating Stack Venting and
NPC Harmonization
Presented by:
Rainier Bratsch-Blundel, CPSI
Plumbing Professor – George Brown College
OPIA Education and Training
1
Wet Venting – Correct or Incorrect
(a)  
1 ½”

(d)  

1 ½”
2”
1 ¼”
1 ½”
1 ½”
2”
3”
(b)  
1 ½”

1 ¼”
1 ¼”
3”
(c)  
2”
2”
1 ½”
1 ½”
2” C/O
3”
1 ½”

(e)  

1 ¼”
1 ½”
1 ¼”
1 ½”
2” 1 ¼”
1 ½”
3”
1 ¼”
1 ½”
Rainier Bratsch-Blundel / Bryan Heyl – George Brown College – Ontario Plumbing Inspectors Association
1 ¼”
7.5.2.1. Wet Venting
• In the 2006 OBC, All Wet Venting
requirements changed.
• Wet venting now includes
– Stack Venting,
– Modified Stack Venting, and the new
– Multi-Storey Wet Venting
Rainier Blundel / Bryan Heyl
George Brown College
3
Wet Venting
• Any fixture can be wet vented.
• Any fixture other than a Water Closet (W.C.) can
do the wet venting
• Symphonic fixtures can do the Wet Venting
• Only fixtures with 2-inch trap arms and fixture
drains can connect into the wet vent above a
W.C. (there is a 3-inch floor drain exception).
• The lowest connecting fixture is NOT included in
the sizing of the wet vent.
4
Wet Venting
•
•
•
Wet Vent means a waste pipe that also
serves as a Vent Pipe.
Continuous Vent means a vent pipe that
is an extension of a vertical section of a
branch OR fixture drain.
Fixture Unit means … the unit of
measure … that expresses the hydraulic
load … on the drainage system
5
Wet Venting
7.5.2.1 Wet Venting
(1) A soil or waste pipe may serve as a wet vent provided
that,
(a) the hydraulic load is in accordance with Table 7.5.8.1.
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.
6
Wet Vent Sizing
(Table 7.5.8.1.)
Maximum Permitted Hydraulic Loads Drained to a Wet Vent
Maximum Hydraulic Load, Fixture Units
Size of Wet Vent
(inches)
No Water Closets
1 ½”
2 F.U.
-
2”
2”
4 F.U.
3 F.U.
F.U.
3
3”
3”
12 F.U.
8 F.U.
F.U.
8
4”
4”
36 F.U.
14 F.U.
F.U.
14
5”
5”
-
18 F.U.
F.U.
18
6”
6”
-
23 F.U.
F.U.
23
Column 1
Column 2
Column 3
Not more than 2 W.C.’s
Fixtures Other Than a W.C.
7
Wet Vent Sizing
(Table 7.5.8.1.)
•
•
3” wet vent (replaces old Stack Venting)
– 1 or 2 water closets installed
8 fixture units maximum
– 2” maximum above the lowest connecting fixture
Size of Wet Vent
(inches)
No Water Closets
1 ½”
2 F.U.
-
2”
4 F.U.
3 F.U.
3”
3”
12 F.U.
F.U.
88 F.U.
4”
36 F.U.
14 F.U.
5”
-
18 F.U.
6”
-
23 F.U.
8
7.5.2.1. Wet Vent Sizing
(1) A soil or waste pipe may serve as a
wet vent provided:
a) the hydraulic load is in
accordance with Table 7.5.8.1.
Continuous Vent
7 metres
11 F.U.
1 ½” pipe
Basin
Wet Vent (branch)
7 F.U. (8 max.)
3” pipe
Tank
W.C.
Wet Vent (branch)
7 F.U. (8 max.)
3” pipe
2”
shower
drain
3 F.U.
1 F.U.
Kitchen
Sink
1.5 F.U.
Bath
tub
1.5 F.U.
9 (i)
7.5.8.3.
(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.
9 (ii)
9 (iii)
b) the number of wet vented water closets
does not exceed 2
c) when 2 water closets are
installed, they are connected at
the same level to a vertical
part of the stack by means of a
double fitting in accordance
with Table 7.2.4.5.,
Continuous Vent
3 metres
Fixture Units = 12
Size = 1 ½” Pipe
basin
basin
Wet vent
5 F.U. (8 max.)
Size = 3” pipe
Branch
Fixture Units = 12
Size = 3”
Bath
Tub
Bath
Tub
Tank
W.C.
Tank
W.C.
Rainier Blundel
10 (i)
Rainier Blundel
10 (ii)
Rainier Blundel
10 (iii)
d) the water closets are
Continuous vent
6 F.U. (BG)
10 metres
installed downstream of all
other fixtures (on the wet vent)
1 ½” Pipe
Wet Vent (fixture drain)
2.5 F.U.
Basin
1 F.U.
2” Pipe
Bath
tub
1.5 F.U.
Tank
W.C.
11 (i)
d) the water closets are
Continuous vent
6 F.U. (BG)
10 metres
installed downstream of all
other fixtures (on the wet vent)
1 ½” Pipe
2.5 F.U.
Basin
1 F.U.
2” Pipe
Bath
tub
1.5 F.U.
Tank
W.C.
11 (ii)
e) trap arms and fixture drains connected to
the wet vent do not exceed 2 in. in size,
except for connections from floor drains in
accordance with Sentence 7.5.1.1.(3)(a) to (c),
Continuous Vent
5 metres
5 F.U.
1 ½” pipe
Note:
A-Table 7.4.9.3. Hydraulic Loads.
Hydraulic Loads for Floor Drains.
No hydraulic load is
required from a floor
drain in a washroom
since it is for
emergency use only.
1 F.U. (3 max.)
2” pipe
Basin
1 F.U.
Wet Vent (branch)
1 F.U. (3 max.)
3” pipe
Tank
W.C.
3”
Floor Drain
3 F.U.
No load
12
Wet Vent Sizing
(Table 7.5.8.1.)
Maximum Permitted Hydraulic Loads Drained to a Wet Vent
Size of Wet Vent
(inches)
No Water Closets
1 ½”
2 F.U.
-
2”
4 F.U.
3 F.U.
3”
12 F.U.
8 F.U.
4”
36 F.U.
14 F.U.
5”
-
18 F.U.
6”
-
23 F.U.
Column 1
Column 2
Column 3
13
Wet Vent Sizing
(Table 7.5.8.1.)
• 1 ½” wet vent
– No water closet installed
• 2 fixture units maximum (2” maximum)
– Above the lowest connecting fixture
Size of Wet Vent
(inches)
No Water Closets
11 ½”
½”
22 F.U.
F.U.
-
2”
4 F.U.
3 F.U.
3”
12 F.U.
8 F.U.
4”
36 F.U.
14 F.U.
5”
-
18 F.U.
6”
-
23 F.U.
14
Wet Vent Sizing
(Table 7.5.8.1.)
A Laundry Tray (Tub) wet venting through a Floor Drain
Washing
Machine
Stand Pipe
(no load)
1 ½”
(1.5 F.U)
1 ½”
Continuous
Vent
1 ½”
Wet Vent
2 F.U. max.
F.D.
2”
3”
4”
15 (i)
Wet Vent Sizing
(Table 7.5.8.1.)
A Laundry Tray (Tub) wet venting through a Floor Drain
Washing
Machine
Stand Pipe
(no load)
1 ½”
(1.5 F.U)
1 ½” Hydraulic Loads.
A-Table 7.4.9.3.
Continuous
Hydraulic Loads
Vent for Laundry Traps.
When determining the hydraulic load
on a pipe, no allowance need be made
for a load from a domestic clothes
washer when discharged
into a
1 ½”
laundry tray, since
the hydraulic
Wet Vent
F.D. load
from the laundry
is sufficient.
2 F.U.tray
max.
2”
3”
4”
15 (ii)
Wet Vent Sizing
(Table 7.5.8.1.)
•
2” wet vent
– No water closet installed
•
4 fixture units maximum (2” maximum)
– Above the lowest connecting fixture
Size of Wet Vent
(inches)
No Water Closets
1 ½”
2 F.U.
-
2”
2”
44 F.U.
F.U.
3 F.U.
3”
12 F.U.
8 F.U.
4”
36 F.U.
14 F.U.
5”
-
18 F.U.
6”
-
23 F.U.
16
Wet Vent Sizing
(Table 7.5.8.1.)
A Lavatory Basin and a Bathtub wet venting through a Shower
1 12"
Continuous
Vent
SHOWER
1 1 4"
1 1/2"
SANITARY
TEE (TY)
2" Wet
Vent
(4 F.U. max.)
2"
757R06B5
17
f) the total hydraulic load on the wet vent does not exceed
the limits stated in Table 7.5.8.1. when separately vented
branches or fixture drains in the same storey, having a total hydraulic
load not greater than 2 fixture units, are connected to the wet vent or a
wet vented water closet trap arm.
Note: the load from the
separately vented kitchen
sink is included when
sizing this pipe
branch
bathroom group
7.5 fixture units
3” inch pipe
Bath
tub
Continuous vent
Continuous
waste
and vent
Lav
Wet Vent
4 fixture units
3” inch pipe
fixture drain
1.5 fixture units
1 1/2” inch pipe
kitchen
sink
Tank
W.C.
Wet Vented
Branch
separately vented
fixture drain
18
f) the total hydraulic load on the wet vent
does not exceed the limits stated in Table 7.5.8.1. when
separately vented branches or fixture drains in the same storey, having
a total hydraulic load not greater than 2 fixture units, are connected to
the wet vent or a wet vented water closet trap arm.
Note: the load from the
separately vented
kitchen sink is
included when
1 ½”
shower
sizing this pipe
Continuous
vent
Lav
Wet Vent
6.5 F.U.
3” inch pipe
Bath
tub
Continuous
waste and
vent
fixture drain
1.5 F.U.
1 ½” pipe
Kitchen
Sink
Wet Vent
branch
10.5 F.U.
3” inch pipe
Tank
W.C.
separately vented
fixture drain
19
(g) the hydraulic load to be
considered when sizing a
continuous vent, that serves
a wet vent only includes the
hydraulic load that is wet
vented,
Bath
tub
Continuous Vent
7.6 metres
6 fixture units
1 1/2” inch pipe
Lav
Wet Vent
(fixture drain)
4 fixture units
3” inch pipe
branch
bathroom group
7.5 fixture units
3” inch pipe
Continuous
waste
and vent
fixture drain
1.5 fixture units
1 1/2” inch pipe
kitchen
sink
Wet Vent
(branch)
Tank
W.C.
separately vented
fixture drain
20
(h) when a wet vent
extends through more
than one storey, the
total discharge from
any one storey above
the first storey does
not exceed 4 fixture
units,
Note: Any fixture above
the symmetrically
connected water closets
must be included in
sizing the wet vent.
symmetrical
connection
kitchen
sink
kitchen
sink
kitchen
sink
Stack Vent
Fixture Units = 15.5
Length = 8 metres
Stack Base = 3” Pipe
Size = 1 ½” Pipe
Lav
Lav
Wet Vent
(Waste Stack)
Fixture Units = 7.5
Tank
W.C.
Lav
Size = 3” pipe
Tank
W.C.
21 (i)
kitchen
(h) when a wet vent
sink
extends through more
Table 7.5.8.4.
than one
storey, the
Size and Developed Length of Stack Vents and Vent Stacks
total discharge from
any one storey above
kitchen
the first storey does
sink
not exceed 4 fixture
units,
Note: Any fixture above
the symmetrically
connected water closets
must be included in
sizing the wet vent.
symmetrical
connection
kitchen
sink
Stack Vent
Fixture Units = 15.5
Length = 8 metres
Stack Base = 3” Pipe
Size = 1 ½” Pipe
Lav
Lav
Wet Vent
(Waste Stack)
Fixture Units = 7.5
Tank
W.C.
Lav
Size = 3” pipe
Tank
W.C.
21 (ii)
(i) there is not more than one nominally
horizontal offset in the wet vent, and,
………………….
drinking
fountain
Stack Vent
Wet Vent
(waste stack)
Tank
W.C.
Lav
kitchen
sink
bathtub
Note:
the definition of “Offset” means the
piping that connects the ends of
two pipes that are parallel
nominally
horizontal
offset
22
(i) there is not more than one nominally horizontal offset in the wet vent,
and, ………………….
(i.)
the offset does not exceed 1 200
mm for pipes 2 in. or less in size,
OR
Stack Vent
Lav
nominally
horizontal
offset
(maximum length
1.2 metres for 2” inch
or less pipe)
branch
2.5 fixture units
1 1/2” inch pipe
kitchen
sink
Wet Vent
(waste stack)
1 Fixture Units
1 ½” Pipe
23
(i) there is not more than one nominally horizontal
offset in the wet vent, and, ……………….
Stack Vent
(ii.) the offset does not exceed 2 500
mm for pipes larger than 2 in. in
size,
Nominally
Horizontal
Offset
(maximum length
2.5 metres for pipe
larger than 2” inch)
Lav
Lav
Wet Vent
(waste stack)
6 fixture units
3” inch pipe
Lav
Lav
Lav
kitchen
sink
Branch
9 fixture units
3” inch pipe
Lav
kitchen
sink
24
(j) the wet vented portion is not reduced in size
except for the portion that is upstream of floor
drains in accordance with Sentence 7.5.1.1.(3),
Tank
W.C.
Continuous
vent
Bath
tub
(k) the length of the wet vent
is not limited.
Not
Restricted
Lav
25
7.5.8.4. Stack Vents or Vent Stacks
(serving Wet Vents)
7.5.8.4.
(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.
But, ………..
7.5.4.2.
(2) A soil or waste stack that
serves as a wet vent does not
require a vent stack.
Stack
Vent
Stack
Vent
Wet
Vent
Same size
as
Wet Vent
over 4
storeys
high
Note:
To size the Stack Vent
use Table 7.5.8.4.
26
Wet Venting – Correct or Incorrect
(a)  
1 ½”

(d)  

1 ½”
2”
1 ¼”
1 ½”
1 ½”
2”
3”
(b)  
1 ½”

1 ¼”
1 ¼”
3”
(c)  
2”
2”
1 ½”
1 ½”
2” C/O
3”
1 ½”

(e)  

1 ¼”
1 ½”
1 ¼”
1 ½”
2” 1 ¼”
1 ½”
3”
1 ¼”
1 ¼”
1 ½”
27
Wet Venting
QUESTIONS?
 www.opia.info/members/
 [email protected]
 Code and Guide for Plumbing
2006 Professional Edition
available at www.orderline.com
28
ONTARIO PLUMBING
INSPECTORS ASSOCIATION INC.
In the public service since 1920
Wet Venting
Incorporating Stack Venting and
NPC Harmonization
Presented by:
Rainier Bratsch-Blundel, CPSI
Plumbing Professor – George Brown College

Wet Venting

Transcription

Similar documents

request junami - Rainier Fruit Company