120 



HIGHWAY CONSTRUCTION 



to prevent the curb turning over toward the gutter. It should never 

 be in smaller lengths than 3 feet. The top surface should be beveled 

 off to conform to the slope of the footpath. The front face should be 

 hamhier-dressed for a depth of about 6 inches, in order that there may 

 be a smooth surface visible against the gutter. The back for 3 inches 



Sloped' 



. Fig. 71. 



from the top should also be dressed, so that the flagging or other paving 

 may butt fair against it. The end joints should be cut truly square, 

 the full thickness of the stone at the top, and so much below the top as 

 will be exposed, the remaining portion of the depth and bottom should 

 be roughly squared, and the bottom should be fairly parallel to the 

 top. (See Figs. 71 and 72). 



Artificial Stone. Artificial stone is being extensively used as a 



Fig. 72. 



footway paving material. Its manufacture is the subject of several 

 patents, and numerous kinds are to be had in the market. When 

 manufactured of first-class materials and laid in a substantial manner, 

 with proper provision against the action of frost, artificial stone forms 

 a durable, agreeable, and inexpensive pavement. 



