5-10. 5-11. 5-12. 5-13. 5-14. Which  of  the  following  factors affect  the  compaction  of  soil? 1. Material gradation 2. Moisture content 3. Compaction effort 4. All of the above Optimum moisture content is the amount of water in the soil required  to  obtain  maximum density. 1. True 2. False Learning  Objective:  Recognize site  preparation  procedures  and the operational processes of a pit or quarry. What  should  you  check  before burning brush on a proposed pit or quarry site? 1. Weather 2. Type of fire extinguisher 3. Requirement for a smoke permit 4. Requirement for a burn permit Overburden should be kept cleared at least how far back from the top of the face of a quarry? 1. 50 feet 2. 40 feet 3. 25 feet 4. 10 feet What is the maximum grade for a haul road designed for use by truck   operations 1. 5  percent 2. 10 percent 3. 15  percent 4. 20  percent in   a   quarry? 5-15. 5-16. 5-17. 5-18. 5-19. 5-20. A chute loading ramp should be constructed to support a minimum of how many tons of material? 1. 5 tons 2. 10 tons 3. 15 tons 4. 20 tons When a pusher-assisted scraper cannot load within 150 feet, you should  use  what  equipment? 1. An additional scraper 2. An extra pusher 3. A ripper tractor 4. A front-end loader Which of the following quarries is a type commonly used by the military? 1. Double bench 2. Open  faced 3. Triple bench 4. Closed  faced What factor determines the layout of a quarry where the rock formation  is  jointed? 1. The method of development 2. The depth of overburden 3. The direction of rock formation 4. The lay of the strata In the NCF, what is the recommended  bench  height in a quarry? 1. 10 feet 2. 15 feet 3. 20  feet 4. 25 feet In the NCF, what is the recommended  minimum  width of a bench? 1. 40 feet 2. 50 feet 3. 60 feet 4. 70 feet 34