5io FARM AND SCHOOL PROBLEMS. 



Road Score Card. 



Points. 



Ditches 



Garbage and Rubbish 



Weeds and Brush 



Protection against washing. 



10 

 10 



10 



Protection against standing water 10 



Uniformity of width of roadbed v I 10 



Uniformity of grading 15 



Uniformity of gravelling I 15 



Straig*htness of grading I 5 



Straightness of gravelling I 5 



Care of tools, 



5 

 100 



Questions. 



1. Why is concrete more economical in the long run than wood 

 construction? 



2. What is cement and how is it made? 



3. Why do walls and walks built of concrete often crack and 

 crumble? 



4. Explain the difference between roads built of concrete, mac- 

 adam, paving blocks (wood), paving brick, asphalt, slag and gravel. 



5. What is a water-bound road? a tar-bound road? 



6. What kind of soil makes the best foundation? 



7. How does quick-sand affect a foundation? 



8. What is reinforced concrete? 



9. Explain 'how steel and concrete in a structure give greater 

 strength and stability than when either steel or concrete is used alone. 



10. What are some advantages of a hollow wall? of a solid wall? 



11. Explain why railroads must use wood ties and why they can 

 not have a concrete roadbed. 



12. How do hard pavements affect horses and vehicles? Why? 



13. Why is the automobile and motorcycle very destructive to 

 stone roads? 



14. Explain the principle of the hollow tire that saves the auto- 

 mobile and damages the road. 



15. What is the best road to build to meet all requirements in- 

 cluding the auto? 



