52 



DETAILS OP CONSTRUCTING ROADWAYS. 



1. All the surface soil should be removed to the depth of one 

 foot on the whole line and width of the road, and deposited 

 along the line. 



2. All roots and other vegetable matter should be excavated, 

 and wholly removed from the roadway, and, together with logs, 

 brush and wood, be burned, or removed from the park. 



3. All deposits of decomposed vegetable matter, or light 

 spongy soils, should be excavated to a proper depth, and depos- 

 ited on the line of the road. 



4. That portion of all water courses or drainage streams, 

 which crosses the line of the road, should be excavated to their 

 firm beds, and properly covered with dry stone culverts. 



5. All earth and soil, other than surface soil, which may be 

 above the established grade, should be excavated to that grade. 



6. The roadway should be properly shaped with a slope of 

 one inch to twenty feet both ways, from the axis of the road- 

 way. 



7. The side-walks should be formed of dry subsoil, to be 

 elevated not more than nine inches from the bottom of the 

 side channels, and to have a pitch of three inches towards the 

 side channels. 



8. The surface of the roadway and side-walks should be well 

 rolled with a heavy roller, until a smooth, compact surface, is 

 formed. 



9. Upon the road-bed thus formed, a coating of broken 

 stone, from two to three inches in diameter, should be spread 

 to the depth of four inches, and rolled with a heavy roller, until * 

 the whole become a compact mass ; after which another coat- 

 ing of the same stone, and of the same depth should be added, 

 and rolled as before. And afterwards, another layer four 

 inches in depth, of hard, tough stone, should be added, and 

 well rolled. 



10. The side-walks shoulds be covered with a coating of 

 sharp, clean gravel, to a uniform depth of three inches, and then 

 rolled with a heavy roller ; after which, a second coating of 



