SQUARE SQUARE FEET YARD Concrete floor: Area of cellar excavation 1,740.0 Deduct area of footings 643.3 ------- 1,096.7 Add for 6-inch strip over inner projection of wall footings, 165' × 6" 82.5 Add for projection on both sides of interior walls, 126' × 6" 63.0 Add for projection over chimney footing, 33' × 6" 16.5 ------- Total area of concrete floor 1,258.7 = 139.9 _Cost_ The estimate for concrete footings is based on the analyses of costs given in _Estimating and Calculating Quantities_, Part 1, and is $5.10 per cubic yard for a 1-3-5 mixture. The estimate for the concrete floor is arrived at as follows: The concrete will be a 1-3-6 mixture. According to _Estimating and Calculating Quantities_, Part 1, this mixture costs $4.92 per cubic yard. According to the same section, 25 cents must be added to this cost for extra labor, bringing the total up to $5.17 per cubic yard. If the concrete floor is 4 inches thick, the cost per square yard will be ⁴/₃₆ × 5.17 = 57 cents, approximately. The top coat, according to _Estimating and Calculating Quantities_, Part 1, is 40 cents. Therefore, the total cost of the concrete floor per square yard is 57 + 40 = 97 cents. _Summary_ Footing concrete, as per foregoing figures, 19.8 cu. yd. at $5.10 per cubic yard $100.98 Concrete floor, 139.9 sq. yd. at 97 cents per square yard 135.70 ------- Total cost of concrete $236.68 _Recapitulation of Cost of Stonework_ Rubble masonry $ 671.53 Ashlar masonry 123.63 Cut stone 761.99 Concrete footings and floor 236.68 --------- Total cost of stonework $1,793.83 BRICKWORK =4.= In estimating the brickwork, openings have been deducted, thus practically giving “kiln count,” so that the analyses of prices given heretofore will apply. If openings had not been deducted, the prices would be 15 per cent. lower.