To estimate the mortar needed, multiply the mortar material given below
for 1,000 brick by 6.1 to determine how much will be needed to build the
chimney, using 1:1:6 mixture recommended on page 10.
Bags of hydrated lime 2.6 by 6.1 = 16 bags.
Sacks of portland cement 3.5 by 6.1 = 22 sacks.
Cubic feet of sand 18.0 by 6.1 = 110 cubic feet = 4 cubic yards.