1|Page
CWEA COLLECTIONS GRADE 2 EXAM LATEST 2026 ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
Working in an un-sloped trench with no shoring is one option of
Protective Shoring Systems, true or false? - ANSWER-False.
Some options are proper stopping or benching of the sides of the
excavation, supporting the sides of a trench with shoring, and
using a shield in the excavation area.
Proper operation and maintenance of wastewater collection is
keeping wastewater flowing through pipes, true or false? -
ANSWER-True
Minimum design velocity for a sewer should greater than: -
ANSWER-2 feet per second
Vitrified Clay pipe is a Rigid type of pipe, true or false? -
ANSWER-True
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Barrels, lids, cones, and backflow devices are all included in
Manholes, true or false? - ANSWER-False. All are included
except for backflow devices.
Sewer testing methods include air, water, mandrill, and sewage,
true or false? - ANSWER-False. Sewer testing methods do not
include sewage.
Using high velocity cleaners is one method included in hydraulic
sewer cleaning, true or false? - ANSWER-True
A flow of 650 gpm would be how many MGD? - ANSWER-650
gpm x (1440 min / 1 day) = 936000 gpd
936000 x (1 MG / 1000000 gal) = 0.936 MGD
One of the advantages of using CCTV is that the length and
severity of defective pipe areas can be recorded, true or false? -
ANSWER-True
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Offset joints are one hazard that may damage a TV camera going
through a sewer, true or false? - ANSWER-True
What is the total volume of 1000 feet of 8 inch line? - ANSWER-
Convert inches to feet:
8 inches x (1 foot / 12 inches) = 0.666
Volume of a right regular cylinder:
V = 0.785 x Diameter x Diameter x Length of Pipe
V = 0.785 x 0.666 ft x 0.666 ft x 1000 ft
V = 348.19 cu ft
Convert to gallons:
348.19 cu ft x (7.48 gal / 1 cu ft) = 2604.47 gal
If an 8 inch force main has a metered flow rate of 400000 gpd,
what is the velocity? - ANSWER-Velocity = Flow / Area
Area = 0.785 x Diameter x Diameter
When finding Area, convert Diameter into feet
8 in x (1 ft / 12 in) = 0.667 ft
Area = 0.785 x 0.667 ft x 0.667 ft = 0.349 sq ft
CWEA COLLECTIONS GRADE 2 EXAM LATEST 2026 ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
Working in an un-sloped trench with no shoring is one option of
Protective Shoring Systems, true or false? - ANSWER-False.
Some options are proper stopping or benching of the sides of the
excavation, supporting the sides of a trench with shoring, and
using a shield in the excavation area.
Proper operation and maintenance of wastewater collection is
keeping wastewater flowing through pipes, true or false? -
ANSWER-True
Minimum design velocity for a sewer should greater than: -
ANSWER-2 feet per second
Vitrified Clay pipe is a Rigid type of pipe, true or false? -
ANSWER-True
,2|Page
Barrels, lids, cones, and backflow devices are all included in
Manholes, true or false? - ANSWER-False. All are included
except for backflow devices.
Sewer testing methods include air, water, mandrill, and sewage,
true or false? - ANSWER-False. Sewer testing methods do not
include sewage.
Using high velocity cleaners is one method included in hydraulic
sewer cleaning, true or false? - ANSWER-True
A flow of 650 gpm would be how many MGD? - ANSWER-650
gpm x (1440 min / 1 day) = 936000 gpd
936000 x (1 MG / 1000000 gal) = 0.936 MGD
One of the advantages of using CCTV is that the length and
severity of defective pipe areas can be recorded, true or false? -
ANSWER-True
, 3|Page
Offset joints are one hazard that may damage a TV camera going
through a sewer, true or false? - ANSWER-True
What is the total volume of 1000 feet of 8 inch line? - ANSWER-
Convert inches to feet:
8 inches x (1 foot / 12 inches) = 0.666
Volume of a right regular cylinder:
V = 0.785 x Diameter x Diameter x Length of Pipe
V = 0.785 x 0.666 ft x 0.666 ft x 1000 ft
V = 348.19 cu ft
Convert to gallons:
348.19 cu ft x (7.48 gal / 1 cu ft) = 2604.47 gal
If an 8 inch force main has a metered flow rate of 400000 gpd,
what is the velocity? - ANSWER-Velocity = Flow / Area
Area = 0.785 x Diameter x Diameter
When finding Area, convert Diameter into feet
8 in x (1 ft / 12 in) = 0.667 ft
Area = 0.785 x 0.667 ft x 0.667 ft = 0.349 sq ft
