14 



LANDSCAPE GARDEN SERIES 



Some sediment and refuse is bound to get into the tile lines, and 

 in order to collect this and keep the tiles open or to reach them for 

 cleaning purposes catch basins are introduced. From the drawing of 

 a simple catchbasin (Fig. 4) it will be seen that the catchbasin pro- 

 vides a break in the tile line and a space in which the heavy sediment 

 will settle, allowing the liquid to pass into the outlet pipe comparatively 

 free from refuse that will not be carried on by the water pressure. 

 When great quantities of water and refuse gather at a drain inlet 

 there the drain inlet and catchbasin should be combined. (Fig. 4). 



Catchbasins, other than tile, are built round or rectangular, large 

 or small, according to the particular needs, and of concrete or brick. 

 In all cases the tops are removable for cleaning purposes. Catchbasins 

 are placed wherever needed to perform the service previously described ; 

 at anugular intersections of tile lines in some cases thus preventing clog- 

 ging at the turn and enabling the tiles to be cleaned out ; and at points 



in open-jointed drains where 

 steep grades merge into flatter 

 grades. Catchbasins or man- 

 holes are located where 

 several lines of tile come 

 together. 



The tile lines should be 

 placed at a depth of at least 

 3 feet and below frost if pos- 

 sible. The tile should be laid 

 with bell end up grade, pro- 

 ceeding from outlet back. 

 As the laying progresses, the 

 joints, when to be closed, 

 should be carefully cemented 

 and the tiles wiped out to 

 prevent clogging. If the out- 

 let is into ravines or streams, 

 the end of the pipe should be 

 protected by a small wall of 

 concrete built around and 

 flush with the end of the pipe 



/[CTION ynOWIMG CON/fBVCT- 

 ION Of- DO.Y VC/ALL 



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A 



SECTION SMOWJ fAR.Tn &HWffN 

 R.OCK./ FOO- \VALL PLfllSTIfNCc 

 MOT F- ! Use weal 'far-worn /(meffone 

 or natvrof rock (ffrcrfff/ed) /aid 

 w/ff) bread face dcivnward- 

 Jo// for yrowi/vy purposes 

 shots/a' be /fq/>/. porcvs ana/ 



enncnenec/ 



e// roft&/ cow manure 



Fig 7 



