Chapter 13 Vent and Venting Flashcards
1300
General
All installed fixture traps shall be protected by _______
- A properly installed individual vent
1301
General
Anti-siphon traps
Sinks in \_\_\_\_\_\_ may discharge to an anti-siphon trap provided that: 1. 2. 3. (two notes)
- island counters
1. placed as close to the fixture as possible
2. waste is increased one size
3. a continuous vent is carried above the flood rim of the fixture to an approved vent - 5 foot does not apply to anti-siphon traps
- if the waste for the anti-siphon trap is run underground and the fixture only requires a 1 1/2 waste, only the above-ground portion need be increased in size
1302
Connection of waste pipe to soil or waste pipe
where a vent pipe connects to a soil or waste pipe, the vent shall be taken off_________. unless prohibited by structural conditions, all vents shall rise a minimum of _____ before off-setting _____ or _______.
-Bath tub vents and other such fixtures can be installed in what fashion?
- above the center of the soil or waste pipe ahead of the trap being served.
- 3 inches vertically above the flood level of the fixture served
- horizontally
- prior to connecting to the branch vent
- rolled to a 45 degree angle before off-setting horizontally
1303
Dual Vents
Two identical purpose fixtures on opposite sides of a wall can be served by a single vent pipe if:
1.
2. answer and exception to the rule
- each branch shall be within the prescribed distance
- Soil, waste and vent pipe shall be sized equivalent to individual installation
Exception: Two water closets shall have a two-inch vent
1304
Fixture vent pipe sizing
1304
All fixtures are vented with a minimum 1 1/2 pipe except:
- 5 fixtures vented a minimum 1 1/4
- one fixture vented 2 inches
- One fixture should be vented indirectly when possible (otherwise 1 1/4)
- 5 fixtures require no vent under certain circumstances
- 2 fixtures should be vented independently
- Residential bar sink, Beer taps, drinking fountains, cuspidors, dental units and lavatories
- Washers
- residential bar sinks
- floor sinks, floor drains, floor urinals, mop sinks and shower stalls
- commercial washers and commercial bar sinks
Venting sump pumps
1304b
(in progress)
1305
Fixtures at different levels
Any stack that has fixtures entering at different levels shall have the fixtures ______ with the exception of the fixture entering _____
- revented
- at the highest level
1306a(1)
No vent or revent required
6 fixtures can be vented without a vent or revent. What are they?
- Shower stall
- floor drain
- Area drain
- floor urinal
- floor sink
- mop sink
1306a(2)
No vent or revent required
fixtures can be run with no vent required under the following condition(s):
- Fixture is connected _____ and _______ to a soil or waste line
- independently
2. horizontally
1306a(3)
No vent or revent required
fixtures can be run with no vent required under the following condition(s):
Located ______ of the base of a properly sized soil, waste or vent stack and _____ from any ______
- 3 feet downstream
2. 5 feet from any water closet opening
1306a(4)
No vent or revent required
fixtures can be run with no vent required under the following condition(s):
branch length is no longer than
- __ for 2”
- ___ for 3”
- ___ for 4”
- ___ for 5” and larger
- 16’
- 24’
- 32’
- 45’
1306a(5)
No vent or revent required
fixtures can be run with no vent required under the following condition(s):
Waste piping may not exceed a single vertical rise of more than ____
- 6 1/2’
1306b
No vent or revent required
down_____, rainwater leader ___ and _____ sump pit
- spout
- trap
- subsoil
1306c
No vent or revent required
A _____ waste that receives condensate from:
1.
2.
3.
4.
and
This waste stack (can/cannot) be used for other waste or vent for other “no-vent-required” fixtures
- vertical
1. mechanical refrigeration
2. space cooling equipment
3. pans required under water heaters
4. discharge from water heater relief valves
-cannot
1307
Offset vent
(in process)
1308
Prohibited vent connections
a. vents from fixtures connected to a _____, ___ and ___
- grease interceptor
- Blow-off basin
- Chemical waste
1309
Relief Vents
Soil and waste stack in buildings exceeding ____ shall be provided a with a relief vent at each ____ and installed as follows
a. begin with the _____
b. the size of the relief vent shall be ___ to the size of the ____
c. the ____ of each relief vent shall be connected to the soil or waste stack through a ______
d. the _____ shall connect to the vent stack through a wye _____
- 10 branch intervals, 10th interval
a. the top floor
b. equal, of the vent stack to which it is connected
c. lower end, wye below the horizontal branch serving the floor
d. upper end not less than 42 inches above the floor level
1310
Return vents
Island fixtures installed as follows:
a. ____ placed as close to the fixture as possible
b. ____ shall be carried from above the floor level to the fixture and _____ to a ___ or _____
c. The vent may be run downward to _____ or _____ and carried to and connected with a properly sized branch or main vent
d. run so that _____
a. p-trap
b. continuous vent
c. extend horizontally, vent stack, stack vent
d. condensation can drain from the vent line