Form Approved
REPORT DOCUMENTATION PAGE
OMB No. 0704-0188
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1. AGENCY USE ONLY (Leave blank)
2. REPORT DATE
3. REPORT TYPE AND DATES COVERED
January 1997
4. TITLE AND SUBTITLE
5. FUNDING NUMBERS
Frost Shielding Protection of a Water Line, Berlin, New Hampshire
6. AUTHORS
Barry A. Coutermarsh
7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)
8. PERFORMING ORGANIZATION
REPORT NUMBER
U.S. Army Cold Regions Research and Engineering Laboratory
72 Lyme Road
Special Report 97-1
Hanover, New Hampshire 03755-1290
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)
10. SPONSORING/MONITORING
AGENCY REPORT NUMBER
Office of the Chief of Engineers
Washington, D.C. 20314-1000
11. SUPPLEMENTARY NOTES
For conversion of SI units to non-SI units of measurement, consult ASTM Standard E380-93, Standard Practice for Use of the
International System of Units, published by the American Society for Testing and Materials, 1916 Race St., Philadelphia, Pa.
19103.
12a. DISTRIBUTION/AVAILABILITY STATEMENT
12b. DISTRIBUTION CODE
Approved for public release; distribution is unlimited.
Available from NTIS, Springfield, Virginia 22161
13. ABSTRACT (Maximum 200 words)
The standard practice of burying water and sewer lines beneath the frost line in cold regions can be expensive when
ledge or other difficult material is within the burial depth. If the pipeline can be buried at a shallower depth and
still be protected from freezing, a significant savings in excavation costs can be realized. A finite element (FE)
program was developed to predict frost penetration depth around buried utility pipelines. The program was used
to design and assess the feasibility of various insulation configurations around a water line buried within the frost-
susceptible depth in Berlin, New Hampshire. Extensive temperature monitoring was performed to evaluate both
the insulation design and the prediction accuracy of the FE program. The first-year results are very promising,
showing good accuracy between the FE results and actual temperatures.
14. SUBJECT TERMS
15. NUMBER OF PAGES
Frost penetration
Insulating buried pipes
Utility line freezing
25
Frost protection of pipes
Pipe freezing
Water line freezing
16. PRICE CODE
Frost shielding
Sewer line freezing
17. SECURITY CLASSIFICATION
18. SECURITY CLASSIFICATION
19. SECURITY CLASSIFICATION
20. LIMITATION OF ABSTRACT
OF REPORT
OF THIS PAGE
OF ABSTRACT
UNCLASSIFIED
UNCLASSIFIED
UNCLASSIFIED
UL
Standard Form 298 (Rev. 2-89)
NSN 7540-01-280-5500
Prescribed by ANSI Std. Z39-18
298-102
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