12 
TANKS WITH SLOPING SIDES 
RULES FOR MEASUREMENT, 
The accompanying. diagram ànd rules will enable the 
capacity of earthen tanks to be easily determined. 
> 120 Feat 
80 Feet 
120 Feet 
TANKS WITH REGULAR SIDES. 
In connection with tanks that have regular sloping sides 
and ends, the rule is :—Multiply length by breadth of top 
area. Multiply length by breadth of bottom area. Multiply 
sum of top апа bottom lengths by sum of top and 
bottom breadths. Add these three results together, mul- 
tiply by depth, and divide by 6, and the final result will 
be in cubic feeti; Divide by 27 for cubic yards. 
Top = 120 x 80 = 9,600 
Bottom = 72 x 32 = 2,304 
1 192 X 112 = 21,504 
33,408 
12 
6) 400,896 
3) 66,816 cub. ft. 
27° —Á———À 
9) 22,272 
2474—6 
=2,474 cublc yards 18 cubic teet. 
