Direct Radiation. Average Temperature in Radiators, 160° F.

Name of Room.

Ratio, 1 Sq. Ft. to

Cu. Ft.

Living rooms, one side exposed..........................

30

Living rooms, two sides exposed ......................

28

Living rooms, three sides exposed......................

25

Sleeping rooms ..................................................

30- 40

20- 30

Schoolrooms and offices......................................

30- 50

Factories and stores............................................

50- 70

Auditoriums and churches................................

80-100

For direct-indirect radiation allow at least 25 per cent, extra. For indirect radiation allow 50 per cent, extra.

Due allowance must be made for leakages through loose doors, windows, etc.

Sizes Of Tappings For Hot-Water Radiators

Direct Radiators.

Indirect Radiators.

First Floor.

Second Floor.

Surface. Sq. Ft.

Size. In.

Surface. Sq. Ft.

Size. In.

Surface. Sq. Ft.

Size. In.

0-15

3/4

0-20

3/4

0-40

1

15-50

1

20-70

1

40-90

1 1/4

50-100

1 1/4

70-125

1 1/4

90-150

1 1/2

100-

1 1/2

125-

1 1/2

150-

2