RECF- CIVIL ENGINEERING REVIWED QUESTIONS WITH
ANSWERS.2
1. Water treatment plants use a process of sedimentation to remove dirt and other solid
particles from the water. In plain terms, this is __________ . - correct answer letting
particles settle to the bottom of the tank
2. What is NOT the primary designed use of a dam? - correct answer To capture and store
seasonal rains for year-round water consumption
3. Which shape is found most often in trusses? - correct answer Triangles
4. If a given canal lock is 30 ft wide and 60 ft long and the pipes that transfer water have a flow
rate of 1500 cfm, how long will it take for the water level to change by 5 ft? - correct
answer 6 minutes
5. Which of the following is not good for a seaport? - correct answer A body of shallow water
6. In determining a bridge's efficiency, you use the formula: Efficiency = mass held/mass of
bridge. Given this table, what is the efficiency of Bridge 2? - correct answer 0.909
7. The best reason to build a scale model is __________ . - correct answer to create a visual
and spatial representation for analysis before building
8. It is 7 PM and the temperature is 60 degrees. It takes 1 hour to pour the cement. What time
will the cement be set using the chart, assuming the temperature does not change? -
correct answer 3AM
9. If a cargo boat comes into port displacing 1800 ft3, but leaves displacing 3600 ft3, what did
they do in port given the density of water is 62.42 lbs/ft3? - correct answer They added
112,356 lbs in cargo weight.
ANSWERS.2
1. Water treatment plants use a process of sedimentation to remove dirt and other solid
particles from the water. In plain terms, this is __________ . - correct answer letting
particles settle to the bottom of the tank
2. What is NOT the primary designed use of a dam? - correct answer To capture and store
seasonal rains for year-round water consumption
3. Which shape is found most often in trusses? - correct answer Triangles
4. If a given canal lock is 30 ft wide and 60 ft long and the pipes that transfer water have a flow
rate of 1500 cfm, how long will it take for the water level to change by 5 ft? - correct
answer 6 minutes
5. Which of the following is not good for a seaport? - correct answer A body of shallow water
6. In determining a bridge's efficiency, you use the formula: Efficiency = mass held/mass of
bridge. Given this table, what is the efficiency of Bridge 2? - correct answer 0.909
7. The best reason to build a scale model is __________ . - correct answer to create a visual
and spatial representation for analysis before building
8. It is 7 PM and the temperature is 60 degrees. It takes 1 hour to pour the cement. What time
will the cement be set using the chart, assuming the temperature does not change? -
correct answer 3AM
9. If a cargo boat comes into port displacing 1800 ft3, but leaves displacing 3600 ft3, what did
they do in port given the density of water is 62.42 lbs/ft3? - correct answer They added
112,356 lbs in cargo weight.
