654 SOILS: PROPERTIES AND MANAGEMENT 



Acres from which a Main Tile Laib on Grades Indicated 

 MAY Adequately Receive Drainage Water 



DlA^METUB 



Grades 



TO A Hundred Feet in Decimals of a Foot with 

 Appeoximatb Equivalents in Inches 



OF Tile 

 (in Inches) 



I inch 



1 inch 



2 inches 



3 inches 



6 inches 



9 inches 





0.04 



08 



0.16 



0.25 



0.50 



0.75 





Acres 



Acres 



Acres 



Acres 



Acres 



Acres 



5 



17.3 



19.1 



22.1 



25.1 



32.0 



37.7 



6 



27.3 



29.9 



34.8 



39.6 



50.5 



59.4 



7 



39.9 



44.1 



51.1 



58.0 



74.5 



87.1 



8 



55.7 



61,4 



71,2 



80.9 



103.3 



121.4 



9 



74.7 



82.2 



95.3 



108.4 



138.1 



162.6 



10 



96.9 



106.7 



123.9 



140.6 



179.2 



211.1 



12 



152.2 



167.7 



194.6 



221.1 



281.8 



331.8 



555. Cost of drainage. — The cost of tile drainage 

 depends on many things, including especially the size of 

 the tile, the frequency of the drains, the depth, the nature 

 of the soil, the method of digging, and the price of labor. 

 The cost of tile varies in different regions and increases 

 rapidly with the size. 



The following schedule will serve merely as a general 

 guide to the range in price a thousand feet and a rod when 

 purchased in car lots : — 



Cost a thousand 

 feet .... 

 Cost a rod . . 



Size (Diameteb in Inches) 



10- $14 



16-$.21 



13-$ 18 

 .20-1.27 



18-$ 25 



.27— $.oo 



$ 25-$ 32 

 $.38-$.48 



$ 35-$ 45 

 $.53-$.68 



$ 65-$80 

 $.9S-$1.12 



The cost for digging the trench of course varies widely. 

 In medium soil free from stone, for a ditch two and one- 



