Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
39 Cards in this Set
- Front
- Back
|
Vent pipes protect fixture traps against _____________.
|
siphonage
|
|
|
Under certain circumstances, traps serving sinks that are part of the equipment of bars, soda fountains, and counters ______________.
|
need not be vented
|
|
|
One factor for determining the size of a vent pipe is __________.
|
its length
|
|
|
The total area in square inches that will provide sufficient aggregate cross-sectional vent area for required 4-inch house sewer is ________________or greater.
|
12.56 sq in
|
|
|
The maximum horizontal length permitted for a required 2-inch vent pipe is _____________ feet.
|
40
|
|
|
The diameter of an individual vent shall not be less than ____________ inches.
|
1 -1/4
|
|
|
A 2-inch vent pipe will serve a total of ___________ fixture units.
|
24
|
|
|
Each vent pipe or stack shall extend through its flashing and shall terminate vertically above the roof at least _______________ inches.
|
6
|
|
|
The distance from any vent pipe opening above the roof shall be at least ____________inches from any vertical surface.
|
12
|
|
|
Horizontal termination of vents from any openable window, door opening, air intake, or vent shaft shall be not less than _____________ feet.
|
10
|
|
|
Except for alleys and streets, vent termination from property lines shall not be less than ___________________.
|
3 feet
|
|
|
Vents terminating in roof areas used for sunbathing shall be extended above the roof at least ______________ feet.
|
7
|
|
|
Joints at the roof around vent pipes shall be made watertight by the use of ______________.
|
flashings
|
|
|
Parallel vent stacks are required for drainage stacks that extend above the building drain _____________.
|
10 stories or more
|
|
|
The parallel vent stack shall be connected to the drainage stack by means of a _________ vent.
|
yoke
|
|
|
The pipe size for the common vent serving lavatories installed back-to-back shall be not less than ______________ inches.
|
1 -1/2
|
|
|
Horizontal vent pipes shall be level or so graded as to drip back by gravity to the ____________.
|
drainage pipe they serve
|
|
|
The minimum size vent pipe that may serve a 4-inch trap is __________ inches.
|
2
|
|
|
Increasing vents one pipe size will ____________.
|
allow vents of longer lengths
|
|
|
Changes in direction of vent piping shall be made by ____________ .
|
appropriate use of fittings
|
|
|
A drainage stack extends 14 stories above the building drain and is served by a parallel vent stack. A relief yoke vent connection between the vent stack and the drainage stack is required at floors _____________ and ______________.
|
4, 9
|
|
|
The fitting that is required for making the yoke vent intersection with the drainage stack is a ___________.
|
wye branch
|
|
|
What is the minimum size for a yoke vent intersection with the drainage stack?
|
not less in diameter than either the drainage or the vent stack, whichever is smaller
|
|
|
If, due to structural conditions, horizontal vents are less than 6 inches above the overflow rim of the fixture, the horizontal portion shall be installed with __________________________________.
|
drainage material and fittings and grade to drain
|
|
|
Vent terminals in locations having minimum design temperatures below 0°F shall be a minimum of ______________.
|
2 inches
|
|
|
Copper tube shall not be used for _______________.
|
chemical waste
|
|
|
ABS or PVC DWV piping installations exposed within ducts or plenums shall be limited to a flame spread index of not more than 25 or a smoke index of 50 except for _______________.
|
singe-family homes
|
|
|
Sheet lead used for flashings of vent terminals shall be not less than ___________ pounds per square foot.
|
3
|
|
|
Long mains shall be provided with relief vents at intervals of _______________ feet.
|
100
|
|
|
Water closets, bathtubs, showers, and floor drains within one or two bathrooms located on the same floor level for private use shall be permitted to be vented by a _____________ vent.
|
wet
|
|
|
Horizontal wet venting is ______________.
|
allowed for 2 bathrooms in a dwelling or guest room on the same floor
|
|
|
The fixture that serves as a dry vent connection to the horizontal wet vent is a ________________.
|
lavatory
|
|
|
The vent system shall be designed to prevent a trap seal from being exposed to a pressure differential on the outlet side of the trap that exceeds ____________ inch(es) of water column.
|
1
|
|
|
The horizontal wet vent shall not be less than 2 inches in diameter for _____________ dfu or less.
|
4
|
|
|
The dry vent connection to the wet vent shall be a(n) ________________ vent.
|
individual
|
|
|
The __________fixture drain or trap arm connection to the horizontalwet vent shall be downstream of any fixture drain or trap arm connections.
|
water closet
|
|
|
An engineered vent system shall be designed by _____________ and approved in accordance with Section 301.4.
|
a registered design professional
|
|
|
Joints at the roof, around pipes, shall be made water tight by the use of ______________.
|
flashing material
|
|
|
For 5 or more drainage fixture units, ____________ inch diameter pipe is the smallest size allowed.
|
3
|
