Flashcards in Chapter 7: Sanitary Drainage Deck (37)
The maximum fixture unit loading allowed on a 2-inch waste stack is ________.
Sixteen fixture units
Three-inch horizontal drainage piping shall have a grade or slope of not less than ________.
1/4 inch per foot
The maximum trap loading for a 3-inch trap is ___________.
The minimum sizes of verticalk and horizontal drainage shall be determined from the __________.
Total fixture units
The minimum size trap and trap arm for a bathtub is ___________.
The maximum discharge capacity (for intermittent flow only), in gallons per minute, for one fixture unit is equal to ______.
7-1/2 gallons per minute
The minimum size drain line for a wall-hung urinal is _______ inches.
The acceptable fitting for connecting a horizontal drain line with another horizontal drain line is a ___________.
Combination wye and 1/8 bend
The clearance required in front of a 2-inch clean out shall not be less than_________.
The discharge line from an ejector shall be provided with a _____________.
Backwater or swing check valve, and gate valve
The minimum size discharge pipe from an ejector of pump in a single dwelling unit having a water closet connected thereto is ___________________.
A horizontal drain pipe has an existing load of 30 fixture units, after connecting the discharge pipe from an ejector rated at 60 gallons per minute, the total load on the horizontal drain pipe will be ___________.
150 fixture units
Because of structural conditions, a 4-inch building drain is installed with a slope of 1/8 inch per foot. The installation will result in ______________.
A reduction in fixture unit load allowance
_______________ are considered suds-producing fixtures.
Kitchen sinks, bathtubs, and washing machine standpipes
Drainage connections shall not be made into a drainage piping system within __________ of any vertical to horizontal change of direction of a stack containing suds-producing fixtures.
Vertical drainage lines connecting with horizontal drainage lines shall enter through a ___________.
45 degree wye or combination wye and 1/8 bend
The minimum size of any building sewer shall be determine on the basis of the ___________.
Total number of fixture units
A straight run of building sewer will require clean outs at intervals not to exceed ___________.
Building sewers 8 inches or larger may have a slope of not less than _____________.
1/16 inch per foot
The maximum distance between manholes shall not exceed ___________.
In residential applications, ABS and PVC DWV piping installations shall be limited to structures of ___________.
Two stories in height
In commercial applications, ABS and PVC DWV piping installations are limited to structures of __________________.
Fittings on screwed pipe shall be of the ____________.
Except for plastic pipe, in lieu of water test, drainage piping may be tested with __________.
An approved material for closet screws or bolts is _________.
Threads in drainage fittings shall be tapped to allow for __________.
Joints between steel pipe and cast-iron pipe shall be ___________.
Caulked or threaded
The maximum number of fixture units allowed on a 4-inch building sewer with a slope of 1/8 inch per foot, as compared to a 4-inch building sewer with a slope of 1/4 inch per foot is ____________.
Macerating toilet systems shall be restricted to single bathrooms for _________.