and CORRECT Answers
The maximum fixture unit loading allowed on a 2 inch D
waste stack is _______ _.
a. four
b. six
c. eight
d. sixteen
Three-inch horizontal drainage piping shall have a grade A
or slope of not less than _____ inch per foot.
a. 1/4
b. 1/8
c. 1/2
d. 1
The maximum trap loading for a 3 inch trap is ______________ D
unit(s).
a. one
b. three
c. four
d. six
The minimum sizes of vertical and horizontal drainage D
shall be determined from the ______________ _.
a. location of fixtures
b. type of building
c. total bathrooms
d. total fixture units
The minimum size trap and trap arm for a bathtub is A
_______ inches.
a. 1-1/2
b. 2
c. 2-1/2
d. 3
The maximum discharge capacity for intermittent flow A
only, in gallons per minute (gpm), for one fixture unit is
equal to________gpm.
a. 7-1/2
b. 15
c. 30
d. 50
, The minimum size drain line for a wall-hung urinal is A
________ inches.
a. 2
b. 1-1/4
c. 1-1/2
d. 3
Of those listed the acceptable fitting for connecting a C
horizontal drain line with another horizontal drain line is a
_________________________.
a. sanitary tee
b. cross tee
c. combination wye and 1/8 bend
d. side inlet 1/4 bend
The clearance required in front of a 2 inch cleanout shall C
not be less than ____ inches.
a. 6
b. 12
c. 18
d. 24
The discharge line from an ejector shall be provided with A
a backwater valve, _____________ _.
a. or swing check valve, and gate valve
b. or double check valve, and globe valve
c. spring-loaded check valve, and union
d. gate valve, and flange
The minimum size discharge pipe from an ejector or B
pump in a single dwelling unit' having a water closet
connected thereto is ____ inches.
a. 1-1/2
b. 2
c. 3
d. 4
A horizontal drain pipe has an existing load of 30 fixture D
units. After adding a new discharge pipe from an ejector
rated at 60 gpm, the total load on the horizontal drain
pipe will be_______ fixture units.
a. 90
b. 120
c. 130
d. 150
Because of structural conditions, a 4-inch building drain is C
installed with a slope of 1/8 inch per foot. This installation
will result in __________________ _.
a. separation of solids and liquids
b. increased scouring and cleansing action
c. a reduction in fixture unit loading allowance
d. an increased allowance in fixture unit loading