Demonstration of a New Technique for Rapidly Surveying Roof Moisture.
Final rept. Apr 75-Mar 76,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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The results of this study demonstrate the potential of the combined thermal IR-nuclear moisture meter roof survey technique described herein. Application of the technique at Dyess AFB, Texas, resulted in the detection of roof areas with entrapped moisture on 5 of the 128 buildings surveyed. Airborne thermal IR imagery proved to be a very effective means of identifying roof areas with potential entrapped moisture. Some false alarms were created by air vents on smaller buildings however, prior knowledge of the position of the vents i.e. during the examination of the imagery would probably reduce this problem considerably. Not all the questions were answered. Information is needed to define the usefulness of the technique as a function of climatic conditions and roof types. In addition, more data are needed to help define the optimum time for acquiring thermal IR imagery for roof moisture surveys. Author
- Cartography and Aerial Photography
- Structural Engineering and Building Technology
- Infrared Detection and Detectors