Question

1. Three aggregate stockpiles are designated as A, B, and C.
   1. Determine an aggregate blend of stockpiles A, B, and C that meets specifications.
   2. Plot the gradations of the aggregate blend you produced in part (a) as well as the specifications (lower and upper limits) on 0.45 power gradation chart.

Sieve size	Stockpile A % Passing	Stockpile B % Passing	Stockpile C % Passing	Specifications % Passing
3/4" or 19.0 mm	100	100	100	100
5/8" or 16.0 mm	60	100	100	90 - 100
1/2" or 12.5 mm	40	100	100	----
3/8" or 9.5 mm	20	60	100	75 - 90
1/4" or 6.3 mm	5	50	100	55 - 75
# 4 or 4.75 mm	2	40	100	----
# 8 or 2.36	1	30	90	----
#10 or 2.0 mm	1	20	60	30 - 42
# 40 or 0.425 mm	1	5	30	11 - 24
#200 or 0.075 mm	1	1	10	3.0 - 7.0

Answer 1