174 AGRICULTURAL ENGINEERING 



QUESTIONS 



1. For what may the scoop scraper, or slip, be used? 



2. What are the special uses of the tongue and buck scrapers? 



3. Describe the construction of the wheel scrapers. 



4. Why is it economical to use large sizes where the haul is long? 



5. Describe the work of the scraping grader. 



6. Describe the construction of the elevating grader. 



7. What is the usual weight of horse rollers? 



8. Describe two types of steam rollers. 



9. What are some of the machines required for the building of 

 stone roads not mentioned above? 



10. Describe the construction of a road drag of plank or split logs. 



