ROAD BUILDING AND MAINTENANCE 501 



rl 



Cross Section French Road (Roman Method), 

 previous *t> I7JS. 



Cross Section of Tresauguet Road, f77S. 





Section Macadam Road, 1616. 



Cross -Sect i on of Modern Macadam (Massachusetts) f?t>ad 

 with shaped foundation. 



Cross Section of Moa/ern Macad 



Cross-sections of different types of roads. 



