STRUCTURAL 141 



A very simple and strong wall may be built up 

 to 8 ft. in half brick. Diagram 53 shows its sim- 

 plicity. Piers of course are necessary to strengthen 

 so thin a structure, and these are contrived by 



\ i 



DIAGRAM 53. 



changing the ground line of the wall by an occa- 

 sional header. Such a wall is useful as an internal 

 division in a garden, between standing grounds, 

 or round a rubbish yard. 



Whether of brick or stone a wall requires a cop- 

 ing to prevent wet from penetrating the joints 

 from above. The simplest coping is made by 

 brick on edge set in cement. A line of drip tiles 

 under this is effective and ornamental. Special 

 coping bricks are also made to accommodate 

 different breadths. Kitchen garden walls should 

 have some arrangement for carrying extra copings 

 in spring. Brackets can be built into the top 

 courses to take boards, or movable glass. Milner 

 recommends sections of iron pipe being inserted 

 at the top, through which iron rods can be thrust 

 at the proper season, to support boards and keep 

 nets from contact with the fruit trees. Such 

 copings make a tremendous difference in the culture 

 of wall fruit as they prevent loss of heat by the 

 rising current of warmed air during the night, 

 and assist the fixing of nets. 



