342 FARM DEVELOPMENT 



the amount of power in pounds required to draw a load 

 on an ordinary farm wagon, on a level road made of each 

 of the following materials other than iron : 



On cubical block pavement, 28 to 44 Ibs. per ton. 



On macadam road, 55 to 67 Ibs. per ton. 



On gravel road, 75 to 140 Ibs. per ton. 



On plank road, 25 to 44 Ibs. per ton. 



On common dirt road, 75 to 224 Ibs. per ton. 



REPAIR AND MAINTENANCE OF ROADS 



Repairing common roads. Much is gained in the 

 building of roads if the surface is made uniform through 



Figure 22 T. Steam road roller. 



long sections, that the same method of repairing may be 

 followed throughout. While the most important work 

 in road repairing is to attend to the little things, as 

 breaks in the surface, yet there is a time when the 

 entire surface must be systematically worked over with 

 machinery, or the entire surface be reconstructed of new 

 materials. The most extensive repair work is fhat 



