ALABAMA WASTEWATER COLLECTION GRADE 1 C TEST
QUESTIONS WITH CORRECT ANSWERS
What should be considered as the scoring velocity of sanitary sewers?
a. 1 ft/sec
b. 2 ft/sec
c. 4 ft/sec
d. 4.5 ft/sec -- Correct Answer ✔✔ b. 2 ft/sec
A manhole barrel is referred to as?
a. An object with flashing lights placed next to a manhole for safety
b. The entrance to the manhole
c. The cylindrical section between the cone and the shelf
d. The cover support around the rim -- Correct Answer ✔✔ c. The cylindrical section
between the cone and the shelf
,Of the following, which does not lead to roots entering a collection system
a. Improper pipe bedding
b. Misaligned pipe joints
c. Differential settling
d. Manhole walls properly sealed -- Correct Answer ✔✔ d. Manhole walls properly
sealed
Of the following abbreviations listed, which is not used in computing or expressing flow
rates?
a. ft/sec
b. gpm
c. mgd
d. psi -- Correct Answer ✔✔ d. psi
Sewer lines can move after years in place due to
a. Settlement
b. Frost action
c. Nearby activities
d. All the above -- Correct Answer ✔✔ d. All the above
,Then end of a sewer pipe that is formed to fit into the bell of the next pipe is called?
a. Clamp
b. Spigot
c. Invert
d. Housing -- Correct Answer ✔✔ b. Spigot
A flow of 60 gph is equal to?
a. 1 mgd
b. 1mg/L
c. 10 gpm
d. 1 gpm -- Correct Answer ✔✔ d. 1 gpm (60 gph / 60 min/hr )
The slope of a sewer is measured by
a. The difference from the crown to the invert
b. The difference in invert elevations over the length
of the pipe
c. Using the diameter of the pipe
d. Only entering the manhole -- Correct Answer ✔✔ b. The difference in invert
elevation over the length
, of the pipe
An air gap can be used to
a. Clean sewer blockages caused by grease
b. Let air into manholes
c. Prevent backflow of wastewater into a drinking
water supply
d. Test for oxygen deficiency in manholes -- Correct Answer ✔✔ c. Prevent backflow
of wastewater into a drinking
water supply.
A cross connection is
a. Cast Iron pipe connected to concrete pipe
b. Steel pipe connected to asbestos pipe
c. Potable (Drinkable) water pipe connected to a supply
of questionable origin
d. Lateral line connected to an interceptor -- Correct Answer ✔✔ c. Potable
(Drinkable) water pipe connected to a
supply of questionable origin
Wastewater carried in a collection system may come from
QUESTIONS WITH CORRECT ANSWERS
What should be considered as the scoring velocity of sanitary sewers?
a. 1 ft/sec
b. 2 ft/sec
c. 4 ft/sec
d. 4.5 ft/sec -- Correct Answer ✔✔ b. 2 ft/sec
A manhole barrel is referred to as?
a. An object with flashing lights placed next to a manhole for safety
b. The entrance to the manhole
c. The cylindrical section between the cone and the shelf
d. The cover support around the rim -- Correct Answer ✔✔ c. The cylindrical section
between the cone and the shelf
,Of the following, which does not lead to roots entering a collection system
a. Improper pipe bedding
b. Misaligned pipe joints
c. Differential settling
d. Manhole walls properly sealed -- Correct Answer ✔✔ d. Manhole walls properly
sealed
Of the following abbreviations listed, which is not used in computing or expressing flow
rates?
a. ft/sec
b. gpm
c. mgd
d. psi -- Correct Answer ✔✔ d. psi
Sewer lines can move after years in place due to
a. Settlement
b. Frost action
c. Nearby activities
d. All the above -- Correct Answer ✔✔ d. All the above
,Then end of a sewer pipe that is formed to fit into the bell of the next pipe is called?
a. Clamp
b. Spigot
c. Invert
d. Housing -- Correct Answer ✔✔ b. Spigot
A flow of 60 gph is equal to?
a. 1 mgd
b. 1mg/L
c. 10 gpm
d. 1 gpm -- Correct Answer ✔✔ d. 1 gpm (60 gph / 60 min/hr )
The slope of a sewer is measured by
a. The difference from the crown to the invert
b. The difference in invert elevations over the length
of the pipe
c. Using the diameter of the pipe
d. Only entering the manhole -- Correct Answer ✔✔ b. The difference in invert
elevation over the length
, of the pipe
An air gap can be used to
a. Clean sewer blockages caused by grease
b. Let air into manholes
c. Prevent backflow of wastewater into a drinking
water supply
d. Test for oxygen deficiency in manholes -- Correct Answer ✔✔ c. Prevent backflow
of wastewater into a drinking
water supply.
A cross connection is
a. Cast Iron pipe connected to concrete pipe
b. Steel pipe connected to asbestos pipe
c. Potable (Drinkable) water pipe connected to a supply
of questionable origin
d. Lateral line connected to an interceptor -- Correct Answer ✔✔ c. Potable
(Drinkable) water pipe connected to a
supply of questionable origin
Wastewater carried in a collection system may come from
