330 



ORKAMENTAL GARDEKIKO. 



Fig. 



130.— STONE PAVEMENT 

 ON SAND. 



of roadways is made by surface drainage — that is, gutters 

 are constructed along the sides, and sufficient roundness 

 of surface of the road is maintained to easily incline the 



water into these. 



Figure 130 shows the con- 

 struction of a common stone 

 pavement bedded in sand. In 

 Europe one often meets with 

 paved walks, made of narrow 

 stone chips, with the surface 



that comes to the top, dressed straight. These pave- 

 ments are comfortable to walk on, neat looking, and 



there is no wear out to them. 



Figure 131 represents a cross section of the favorite 



roadway for pleasure grounds, parks, and cemeteries, 



known as the Telford Road. 



An excavation is made from 



eighteen inches to two feet 



deep, to receive the material 



of the road. The body consists 



of large stones set regularly 



over the bottom, then broken 



Fig. 



131.— SECTION OF TEL- 

 FORD ROAD, 



stone, averaging the size of a 

 hen's egg, makes a middle course, and on top of this 

 is placed a finishing coat of about four inches of gravel. 

 The whole is made firm by hammering and rolling as 

 the work proceeds. The gutters consist of small sized 

 paving stones at the surface, set in a water-settled body 

 of sand. 



In all roads or walks with gutters at the sides, as well 

 as at any low places, provision should be made for carry- 

 ing away the accumulation of surface water. For this 

 purpose silt basins or lodges constructed of brick and 

 connecting with drains in the ground, are placed at 

 required points. In figure 131, the cross sectional out- 

 line of such a reservoir is shown. It should have a mova- 



