Pipe & Excavation Practice Questions PDF

Pipe & Excavation 1\. (\#10749) - A 100% slope is the same as a? Answer: 45 degree angle Pipe & Excavation - 80 2\. (\#14090) - A bid is being prepared for a project with high groundwater. All of the statements are true and should be considered in the bid EXCEPT Answer: Wellpoint dewatering...

Pipe & Excavation 1\. (\#10749) - A 100% slope is the same as a? Answer: 45 degree angle Pipe & Excavation - 80 2\. (\#14090) - A bid is being prepared for a project with high groundwater. All of the statements are true and should be considered in the bid EXCEPT Answer: Wellpoint dewatering systems are the most effective in fine grain-soils Pipe & Excavation - 296 3\. (\#751) - A downhill slope is a: Answer: Negative grade Pipe & Excavation - 80 4\. (\#10751) - Adequate boosting will allow scrapers to spread the soil remaining in front of the bowl as its? Answer: Lifted Pipe & Excavation - 93 5\. (\#14088) - An advantage of nuclear compaction test compared to other methods is that? Answer: It does not require the removal of the soil samples from the site of the test Pipe & Excavation - 186 6\. (\#10754) - Coarse-grained soils (like gravel) tend to withstand? Answer: Saturation Pipe & Excavation - 187 7\. (\#743) - If you are working a job that has silt or clay soil that has become saturated and compaction is an issue, what should you do? Answer: Haul it away and replace it with dry soil Pipe & Excavation - 291 8\. (\#724) - The easiest type of rock to rip is: Answer: Sedimentary Pipe & Excavation - 279 9\. (\#14086) - The optimum hourly production rate is 700 loose cubic yards when working in soil with a 35 percent swell factor. What is the adjusted production rate in bank cubic yards? (Pipe) Answer: 519 1/8/25, 10:32 AM Contractor Courses https://contractorcourses.com/my-courses/course/100/north-carolina-residential/featured-questions 8/38 Pipe & Excavation - 66 - Figure 2-5 10\. (\#744) - What do contour lines show? Answer: A contour line represents points of equal elevation above or below an arbitrary reference Pipe & Excavation - 257 11\. (\#730) - What dozing technique reduces the amount of the load lost during transit? Answer: Slot dozing Pipe & Excavation - 81 12\. (\#14085) - What is the average cycle time for a wheeled backhoe (14-foot hoe) digging an 8-foot trench in hardpan? Answer: 18 seconds Pipe & Excavation - 65 - Fig 2-3 13\. (\#731) - What is the best piece of equipment to dig a trench in soft soil? Answer: Tracked backhoe Pipe & Excavation - 174 14\. (\#723) - When positioning a trench box it is always centered over the pipe. To maintain safety in the ditch, the maximum height above the pipe you should install a trench box is: Answer: 5 feet Pipe & Excavation - 174 15\. (\#765) - Which of the below would be used for excavating shallow trenches with cross lines? Answer: Wheeled / Rubber tire backhoe Pipe & Excavation - 152 - Figure 5-9 16\. (\#14089) - Which of the following materials will reduce dozer production rates the most? Answer: Fine-grained igneous rock Pipe & Excavation - 276 17\. (\#14087) - Which statement is true about the impact of soils structure and density and the choice of compaction methods to maximize production? Answer: Course sand and gravel compact well with water and vibration Pipe & Excavation - 186 18\. (\#16680) - When installing a thrust block on a 8 inch pipe carrying 100 psi with a 45 degree fitting and the elbow bearing against sand what is the thrust block surface area? Answer: 4.1 Sqft Pipe & Excavation - 197 19\. (\#16830) - What is the maximum angle of repose for average soils? 1/8/25, 10:32 AM Contractor Courses https://contractorcourses.com/my-courses/course/100/north-carolina-residential/featured-questions 9/38 Answer: 1:1 Pipe & Excavation - 171 20\. (\#16831) - What is the recommended slope for average soils? Answer: 45 degree Pipe & Excavation - 171 21\. (\#17343) - What do contour lines on a topographical map that form a closed loop represent? Answer: Summit or Depression Pipe & Excavation - 258 22\. (\#17344) - On a topographical map what is indicated by contour lines that are closer together? Answer: Increase in slope Pipe & Excavation - 258 23\. (\#17345) - What type of slope is indicated by contour lines that are closer at the peak of the slope than at the bottom? Answer: Concave Pipe & Excavation - 258 24\. (\#17426) - What type of pipe is typically used to connect at the top of a water heater? Answer: Type M copper pipe Pipe & Excavation - 299 25\. (\#17427) - What type of pipe would be used to distribute gas behind concealed walls? Answer: Black pipe Pipe & Excavation - 300 26\. (\#17700) - With silt fences, generally the maximum spacing between posts should be \_\_\_\_\_ and post depth should be at least \_\_\_\_\_. Answer: 6 feet, 12 inches Pipe & Excavation - 138 28\. (\#18669) - What should be the angle of repose for compacted sharp sand? Answer: 33° Pipe & Excavation - 171 29\. (\#19041) - What type of pipe is most commonly used for drinking water? Answer: Copper Pipe & Excavation - 298 30\. (\#19345) - What type of pipe is not primarily used for liquids, but solids? Answer: Soil pipe Pipe & Excavation - 300 31\. (\#19359) - What test is normally required for septic tank drainfields? Answer: Percolation test Pipe & Excavation - 216 Carpentry &