Forest City press. (Forest City, Potter County, D.T. [S.D.]) 1883-19??, 1912-01-04

gins ~ once. ne Dau pliCe SlOWl ny
water coming to the top of the ground
will probably have to be dug out, and
perhaps the whole line OF tile viii
have to be put on a grade nearly level
Even in good thing lands, care shoulr
he taken to elem out little sand poch
cts and fill them with clay. Larger
sized tile are used in soft lands when
laid nearly level than where there is a
good grade. The larger size lets
through a given volume of water with
less velocity, so as not to disturb the
soil. Another case requiring nearly
level tile is where there is little fail
from the low place at the head OF the
drain to the outlet, as, for example,
some pond whose bottom is but a few
feet above the point OF discharge, per
laps a quarter CT a mile away. II the
surrounding land needs to be drained
tie nearly level from the pond to the
discharge, as most crops will do better
with from three to four feet OF soil
not w~ater-logged than they will with
let;.
AS a guide in determining the prop.
er size OF tile for any grade within
practical limits, and which will meet
with requirements in draining a given
area of land, the reader is referred to
Tables ] and ,. Table 1 above is ar.
ranged for outlet drains; that is, for
the main and %sub-mains. Table 2 is
to be used only in determining the size
of la, erals. 1t will be noticed that
Table ] indicates that a given size OF
tile will remove a greater amount Of
water in the same time than would the
same size tile according to Table Q
This is owing TO the different condi
tons that exist, the water in the main
and sub-mains flowing under more
pressure in most cases than in the lat
erals. These tables are based upon ex
perience, conform to we'll known laws
of the flow of water in pipes, and may
be relied upon in practice.
An estimate of the cost of proposed
drainage work is important before be
ginning operations. When it is desired
to drain a field or farm, a preliminar,
estimate may be made from al inspec
ton of the land based upon a knowl
edge of what it has cost to drain othe,
tracts of land similar in requirements
However, such an estimate a be onl,
roughly approximate until lines of tn
proposed tile drains have been located
sizes of tile to be used decided upon
and the amount of earth 1t will b,
necessary to ~excavate has been deter
mined. The cost of material and labo
). in a given locality a be ascertained
and in making estimates OF cost |
will be we'll to consider the following
/. Total number Of each size Of til
required.
2. Cost OF tile at factory.
8. Cost of freight to nearest raj
road station.
4 Hauling and distributing the til
: on the drain lines.
/. Digging bitches and laying tile
J s. Back filling tile trenches.
q Plans, specifications and super
intendence.
: Much more might be said on the sui
!. ject OF farm drainage which Is Z
: growing Importance to the farmers 9
, the northwest, but the length OF thi
. article is limited by space. wish I
: add. however, that If any reader
: South Dakota finds himself In need q
. the services Of a young man skilled /
Z surveying. who understands maxim
out the plans, specifications and 8,
p~erintending the construction of til
I. drains for farm drainage, the write
can refer him ia a number OF such l
. I'LL parts of the state.
$50