124 CONSTRUCTION 



repeated. This pavement for boulevard construction is 

 reported to be giving excellent satisfaction. 



A large number of mixers are on the market for hot 

 mixing of the materials of both portable and stationary 

 types. 



There are several proprietary bituminous concrete 

 pavements before the public which while giving good results 

 will not be discussed in this connection. 



The Brick Pavement. This is a type of pavement 

 well adapted for park entrances and plazas where driving 

 is heavy. It is practically dustless and very durable. 



The foundation of a modern brick pavement consists 

 of 4 to 6 inches of concrete on which is placed an inch of 

 sand, clean, moderately coarse and free from loam and 

 pebbles. The sand is leveled off with a template, which 

 gives it a true surface. The pavers are required to stand 

 on the brick already laid. 



The sand filler has been abandoned and the joints are 

 now filled with cement grout, coal tar, asphalt or a patented 

 filler of bituminous nature. 



In order to provide for expansion and contraction a 

 thin strip of wood is placed between the curb and the 

 pavement. This strip is afterward removed and the space 

 filled with a bituminous filler. Similar transverse joints 

 are placed from 25 to 50 feet apart. 



The Concrete Pavement. This type of pavement 

 might well be employed for entrances or plazas or wherever 

 the driving is heavy. Its appearance is to be preferred to 

 that of the brick pavement for park purposes. The author 

 believes that the concrete pavement will soon come into 

 favor with park authorities. There are two methods 

 of construction, the Mixing Method and the Grouting 

 Method. 



