Area of orifice, sq. in. X

No. corresponding to height of surface above orifice, as per table = Cubic feet discharged per minute.

Height of

Surface above

Orifice.

Multiplier.

Feet.

1

2.25

2

3.2

4

45

6

5.44

8

6.4

10

7.1

12

7.8

14

8.4

16

9.

Height of

Surface above

Orifice.

Multiplier.

Feet.

18

9.5

20

10.

22

10.5

24

11.

26

11.5

28

12.

80

12.3

82

12.7

85

13.3

Height of

Surface above

Orifice.

Multiplier.

Feet.

40

142

45

151

60

16.

60

17.4

70

18.8

80

201

90

21.3

100

22.5