1 bushel, or 1¼ cubic foot of cement, mortar, etc., will cover 1½ square rods ¾ inch thick. 75 volumes are required upon brick work for 70 upon laths.

Cost of Masonry, of various Kinds, per Cubic Yard, and the Volume of Mortar required for each. Gen. Gillmore, U. S. A.

Mortar.

Volume.

Lime, no Cement need.

Cement, no Lime used.

Difference of Cost with Cement or Lime Mortar.

Cost.

Lime Mortar.

Cement Mortar.

Cu. Ft.

Bbls.

Bbls.

$ Cts.

$ Cts.

$ Cts.

Rough, in rubble or gravel, from 1/8 to .1 cubic foot in volume..............

108

.565

1.22

90

4.10

5.

Blocks, large and small, not in courses; joints hammer-dressed....

81

•423

•92

62

7.

7.63

Large masses; headed and stretchers dovetailed; hammer-dressed; beds and joints laid close.........................

1.

.05

.11

08

9.

9.08

Ordinary; courses 20 to 32 in rise......

1.5

•08

17

12

5.70

Ordinary; courses 12 to 20 in rise...............

1.05

.22

16

2.19

Brick............................

8.

.42

•9

66

5.70 2.19 1.56 1.4.-.

6.10

Concrete, good........................

11.

•54

1.75

1.21

3.20

" medum.......................

9.

•41

1.06

65

2.21

" inferior..........................

8.

•37

•97

60

2.05

Rubble, without mortar.................

3. to

3.30

Cost of materials assumed as follows: Cement, $1.25 per barrel; Lime, $1; Bricks, $4.23 per M; Sand and Gravel, 80 cents per ton; Granite spalls, 55 cents per cubic yard; Labor, $1 per day.

* 300 lbs. net is the standard barrel, but it usually weighs 308 lbs. bricklayers' work. 71