Grand Forks herald. [volume] (Grand Forks, N.D.) 1916-1955, 1921-03-08

the diameter Of the proposed silo.
Then by cutting a little notch in the
edge of the board, or boring. a small
hole through it. so that a lead pencil
AN be used for making a mark, fasten
the other end of this board to some-
thing on the ground, Of or a floor,
then lay out your boards on which
you wish to mark the circles, put the
lead pencil in the hole. and by draw
ing 1t around the center o can get
a mark that is exactly the inside cir
cumference Of the silo. The saving OF
this circle may be done with an ordin-
airy r!p-saw. and it is desirable to
build this form in four or five sec
tons, and arrange these sections SO
mat they can be raised one at a time.
They may be fastened together. whels
III place. by hooks or bolts, or bv
lacking a short piece of board across
from n part of the circle to the 9TH
er.
Perhaps a more satisfactory form
may be made by cutting the circles az
above described. and then using a 2o-
guage iron. 36 inches wide, for COW
erlng these circles. These may be fas-
tened together by bolts, which arc
long SO that they can, he
useo as set screws for tightening up
me form on the inside. or wedges
may be used to tighten the forms
For the outside form a single sheet
or IRON, So inches wide and long
enough to reach around the silo. NAV
pc used. The ends should Ian over
3 or 4 inches. A few inches from
these ends, Tugs should be- riveted-
through which bolts may be passed
to hold the form together, or a AKA
may be bolted on each end and the
bolts put through these. 1t is. also
OF 10 have several blocks
uoltso AT intervals on the outside Of
.ne .orm: 70 catch hold of when lift.
lng the form to a new position.
These forms are made AZ ;nche.
11sh. which will admit of building 90
-to - lnches OF the wall at a time. ,,s
the form should always extend down
on the wal 2 to 4 inches. wall for
silos over IL feet in diameter are ,s,-
ally built six inches thick. and the
walls Tor slios IL feet or under may
De made five inches thick.
Retniorcemeuts.
For reinforcing the silo wall. -,,a.
u Is always advisable to use reinforc-
ing IN concrete Of any kind. there !.
notning better than good. stTonr 80
en- hog wire. OF u the Sos,,;s-
me "!te the stronger will be the work
TINS wire should be a littie h;rha.
va the form, so that when the nar+
REINFORCING is put on thew viii 1.n
over lew inches to give a nar,ant
connection. When the forms ara sst
Up tne woven wire is simnlv ni.eeS
inside: Care should be taken hat =
- ittle nearer the outside thar ~
s1oe' out should never touch he fo.,ns
Doors in Slo.
tne use OF reinforcement and ,nn.u,hs'
~ forsattachtng it, will DEPEND awe
Mnas on the style Of door used n IN.
saio. A quite popular form i. ~
5c~ontlnuous door. In using thi. ..,,is
Of ooor an inch, or inch. and q n,,sr.
~ 1as pipe is set in the for,s az
e1tner side of the door, and ali rain
aUlclnE wire should attach to thaas
Inc gas pipes are held together ~
..ncn or sevep-e ighths inch q
spaced h right distance apart -
tor n q There must be a form
:" -. INSIDE OF the circular forms. Ia
popesay mold the door. This "a us,.
Ely accomplished in such a way nal
sAes OF 2xlOs may be cut and fitted
u..e ~ Top OF the other, in the xroovs
made IN the concrete. 'oo
contlnuous doors are not used thu
doors should be douhied ina
make up for the weakeninr 9 70
the openings. In silos less 49, ~
'Ieet IN diameter It ir prnh, ~ ~
the Intermittent door viii ri,,a .Mas
a. eood satisfaction as the cone vra.e
door. This would near .hat nu
IofHf Tor the door could be ..t 49,
ery other circle, as, the 4 !. a sx-