SIZE OF CHIMNEY.

NO. OF FLUES.

SIZE OF FLUES.

NO. OF BRICKS

PER FOOT IN

HEIGHT.

16

x

16

inches

1

8

x

8

inches

30

16

x

24

,,

1

8

x

16

,,

40

16

x

28

,,

2

8

x

8

,,

50

16

x

40

, ,

3

8

x

8

,,

70

16

x

52

,,

4

8

x

8

,,

90

20

x

20

,,

1

12

x

12

,,

40

20

x

24

,,

1

12

x

16

,,

45

The above does not include waste, which must be allowed.

Mortar for Brick-work. - One cask of good lime to a load (about 20 bushels) of sand is sufficient for 1,000 or 1,100 bricks.

Cement for Cellar Bottoms should be mixed in the proportion of 1 of cement to 3 of gravel, and should be laid 3 inches thick. One cask of cement will cover 5 or 6 square yards.

Plasterers' Mortar. - One cask of lime to a load (20 bushels) of sand, and 2 bushels of hair, will cover about 50 square yards of surface; and 1/2 cask of lime will skim the same. In estimating the surface to be covered, plasterers deduct only half the area of openings, such as doors and windows, from the square yards in the walls.