RECF- Civil Engineering Questions and Answers Already Passed

RECF- Civil Engineering Questions and Answers Already Passed Water treatment plants use a process of sedimentation to remove dirt and other solid particles from the water. In plain terms, this is __________ . letting particles settle to the bottom of the tank What is NOT the primary designed use of a dam? To capture and store seasonal rains for year-round water consumption Which shape is found most often in trusses? Triangles 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? 6 minutes Which of the following is not good for a seaport? A body of shallow water 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? 0.909 The best reason to build a scale model is __________ . to create a visual and spatial representation for analysis before building 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? 3AM 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? They added 112,356 lbs in cargo weight. Mass transit is most often found __________ . in urban areas The Panama Canal connects which two bodies of water? Gulf of Mexico and Pacific Ocean Pre-stressed concrete is much stronger than regular concrete in __________ . compression Hoover Dam can use up to 32,000 cubic feet/sec to generate electricity through its turbines. One cubic foot per second of water equals nearly 7 gallons passing a given point in one second. Given that the Hoover Dam can store up to 9.2 trillion gallons in its reservoir, Lake Mead, how long would it take to completely empty the lake assuming no additional rain? 1.30 years A surveyor is surveying a site for a bridge over a canyon, and she wishes to find the distance across at a certain point. However, it is impractical to measure the distance directly, so she identifies a tall rock as a marker. If A = 150 meters and B = 30 Degrees, what is the distance across the canyon? 87 m Which type of design project would testing a design using computer-based simulation be required? Truss bridge Which of the following is used for flood control? Levers There is a series of six identical canal locks that each take five minutes to raise the water level by four feet. It takes two minutes to maneuver between locks. How long will it take for a ship to travel this lock system? 40 minutes In determining a bridge's efficiency, you use the