Table C-3 Freeze Protection by Insulation and Flushing

UFC 4-150-02

12 May 2003

Table C-3 Freeze Protection by Insulation and Flushing: Suggested

Combinations for Regions III and IV

REGION IV

REGION III

PIPE

INSULATION

SIZE

THICKNESS

FLUSHING

THICKNESS

FLUSHING

(inch)

FEATURE

(inch)

FEATURE

2

1

Yes

1

Yes

3

1

Yes

1

Yes

4

1

Yes

1

Yes

6

1

Yes

1

Yes

8

1

No

1

No

10

1

No

1

No

12

1

No

1

No

Table C-4 Freeze Protection by Insulation and Heating: Suggested Combinations

for Regions III and IV

REGION III

REGION IV

PIPE

INSULATION

SIZE

THICKNESS

HEATING

THICKNESS

HEATING

(inch)

(watts/foot)

(inch)

(watts/foot)

2

1/2

6

1/2

6

3

1/2

6

1/2

6

4

1/2

6

1/2

6

1/2

6

1/2

None

8

1

None

1

None

10

1

None

1

None

12

1

None

1

None

C-4