88 
CONCRETE SILOS 
I 
1 
rHalf round 
^^'x 2" Bracket 
I 
I 
rornid in place for 
Top section and Cornice 
being shingled or otherwise 
repaired, and which will be in 
no danger of blowing off. 
A cornice is only necessary 
where a roof is to be put on, its 
xe Cornice ^^^^^ ^^^^ being to pre- 
vent water from the 
roof from running down the 
walls, and to improve the ap- 
pearance of the silo. On this 
page is shown how the forms 
are made for the cornice on a 
monolithic silo. 
The brackets for the 
forms are made of 34 x 2-inch 
strap iron bent as shown, 
and drilled to receive three 
stove bolts. These brackets 
should be placed on the outer 
form at intervals of about 6 
feet, holes being drilled at the 
proper points to receive the 
stove bolts. The bottom of 
the cornice mold box is made 
of 2x6-inch planks in short 
lengths, sawed to the arc of a 
circle with diameter 1 foot 
larger than that of the inside 
of the silo. The side of the 
mold is made of lx6-inch 
planks spiked to the bottom 
boards. The mold is held in 
place by screws through the 
bracket, as shown. An extra 
band of horizontal reinforcing 
is put in the cornice, as may 
be seen in the figure. The vertical rods in the silo walls and the radial 
rods of the roof are all brought around the horizontal reinforcing in 
the cornice, thus holding it in place and strengthening the cornice. 
For the top section of the wall (last filling of the forms) the inner and 
outer forms are brought up to the line of the top of the completed wall. 
The forms are then filled to within one foot of the top, the outer form re- 
moved, and brackets attached. (If the stove bolts are already in place 
the form need not be removed to attach the brackets) . The mold box will 
then be put in place. The cornice will be concreted at the same time as 
the roof, as will be explained later. 
The roof framing may consist of 2x4's or similar material, as 
shown in the lower right-hand quadrant of the plan view, on page 90. 
In case of a silo with a water tank on top, the forms must be 
removed before the roof framing is put up, and the latter sup- 
ported on a light framework erected within the tank. 
Box. far Cornice 
Mold Box for Silo Cornice. 
Roof 
Framing 
