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Counting The Cost
Cutting The Trenches
Depth Of Trenches
Establishing A Grade
Kind Of Tile
Locating Main And Branches
Material For The Drains
Permanency Desired
Size Of Tile
The Grade
The Laterals
The Modern Fallow
The Outlet

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Amount Of Application
Amount Of Manure

Kind Of Tile

When clay tile is used, it should be well burned. Some
manufacturers offer soft tile for sale, as the loss from warping and
cracking is less in case of insufficient burning. The claim may be made
that the efficiency of soft tile is greater than that of the hard tile
whose porosity has been destroyed. This is an error, as the water
enters the drain at the joints, and not through the walls of the tile.
Underdrainage should be permanent in its character, and it is essential
that every piece of tile be sound and well-burned.

Vitrified clay tile is good for drainage, but no better than common
clay hard-burned.

Round or octagonal tile is the most desirable because it can be turned
in laying to secure the best joints. Collars are not needed in ordinary

Cement tile is coming into general use in regions having no good clay.
Its durability has not been tested, but there is no apparent reason
that it should not be a good substitute for clay.

Next: The Grade

Previous: Size Of Tile

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