Walls 43 



the whole together, this bond stone may 

 be placed as near the center of the pier as 

 the design will permit. 



The top of a brick wall is capped with 

 stone, terra-cotta, cement or brick set on 

 edge. The stone and terra-cotta coping 

 are more lasting. The old expedient to 

 exclude trespassers, of imbedding broken 

 glass and bottles in cement, is still occa- 

 sionally seen. 



Like stone the brick should be set in 

 Portland cement mortar and the same di- 

 rections for color apply as above. The 

 joints can be flush or raked out. 



The method of placing the bricks in the 

 wall is called the bonding. The usual 

 forms are common or American bond, Eng- 

 lish bond and Flemish bond. (See Fig 

 14.) The illustrations show the varieties 

 and also that through bricks at intervals 

 are necessary to the strength. The com- 

 mon bond takes less brick than the other 

 two as only every sixth or seventh course 

 is laid headers. The headers are the ends 

 of the bricks exposed while the stretchers 

 are bricks laid the long or natural way. 



Wonderful decorative effects are pro- 



