Concrete needed for foundation can be estimated as follows: Concrete for
foundation should be 1:2½:5 and for the top 1:2½. The foundation
is 7 by 3.75 by 1, or 26.25 cubic feet, or 1 cubic yard, and will
require 5 sacks of cement, 0.46 cubic yard of sand, and 92 cubic yard
of gravel. The cap is 4.5 by 2.66 by 0.5 = 5.9 cubic feet The area of
the three flues above must be deducted: 5.9 minus 2.48 = 3.42 cubic
feet, or one-ninth of a cubic yard. As 1 cubic yard was assumed for the
foundation, extra cement and sand are not needed. Other material needed:
1 8-inch thimble, 9 inches long.
1 6-inch thimble, 9 inches long.
28 feet of 8½- by 13-inch flue lining.
20 feet of 13- by 13-inch flue lining.
20 feet of 8½- by 8½-inch flue lining.
Damper, 36- by 10-inch throat opening.
2 clean-out doors and 1 ash dump.
Mantel as selected.
If firebrick is to be used or the exposed breast is to be of face or
special brick (or ceramic tile) the number should be counted or estimated
and deducted from the number of common brick as estimated above.