52 
BULLETIN 115, U. S. DEPARTMENT OF AGRICULTURE. 
Lumser Bill 
No. Dimensions 
l 3 /i'l2"s.is 2e 
Where the concrete is mixed by hand on structures like the one 
described, the Turlock district finds it costs $20 to $22 per cubic 
yard, while machine-mixed concrete on large structures runs about 
813 per cubic yard. The mix used is one part cement to three parts 
sand and five parts broken stone. Cement costs $2.75 per barrel f. o. b. 
Turlock, and sand usually is close at hand. Stone costs $1.75 per 
cubic yard and the hauling 17 cents per mile per yard additional. 
The reinforcing bars cost 3J cents per pound at San Francisco. The 
total cost of a structure like the one in figure li is about $300. 
Where a similar design is used for a simple check gate, a lateral 
headgate, or a drop 
of less than 2 feet, 
the pier walls are 
carried level on top. 
the slope being omit- 
ted, and the axle set 
3 inches higher and 
3 inches farther back 
from the face of the 
gate: also the lower 
12 inches of the gate 
shutter is replaced 
by a 12 -inch weir 
board. Where used 
as a waste gate or 
in any place where 
tightness is desirable 
the shutter is made 
water-tight by plac- 
ing waterproof roof- 
ing paper between the two layers of the double face and rubber belting 
is placed at the edges. 
Fig 
15. — Sublateral check. Tleton unit, Yakima 
Fnitecl States Reclamation Service. 
project, 
SUBLATERAL 
CHECK. TIETON UNIT, YAKIMA PROJECT, 
RECLAMATION" SERVICE, WASHINGTON*. 
UNITED STATES 
A check which is well adapted to withstand a fall of water behind 
it is shown in figure 15. It is used for small laterals, and is adapted 
to the temporary construction which contemplates a permanent 
structure similar to the one shown in figure 13. page 17. 
COMBINED CHECK AND DELIVERY STRUCTURE, ROCK CREEK CONSERVATION CO., 
WYOMING. 
The " L " construction of check and delivery gates is well exem- 
plified in the view (PI. X. fig. 2) taken on one of the main laterals 
of the Rock Creek Conservation Co., in Wyoming. 
