Investigation of Air Force Build-Up Roofing Tolerances.
Abstract
The level of construction quality required by Air Force Manual (AFM) 91-36, Built-Up Roof Management Program, is controversial. The objective of this research is to provide information pertaining to the need for and obtainability of this quality. This is done by combining a descriptive study and a statistical analysis of historical data. The descriptive study provides a general review of published knowledge pertaining to the use and need for build-up roofing tolerances. The study draws from formal research, international symposiums, published information from national associations, periodicals and journals, texts, government publications, and manufacturers' literature. Factors influencing performance are presented. One factor, workmanship, is especially highlighted. System performance attributes are also discussed. Although vast improvement has been realized over the past ten years, premature failure rates of 10 to 15 percent are recorded. To assist in showing the need for tolerances the main built-up roofing problems, which could create failure situations, are introduced. Finally, the study provides existing viewpoints on the use of tolerances for indicating performance ability. Also included are currently recommended rates and tolerances.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1986
- Accession Number
- ADA174539
Entities
People
- Dale R. Lavigne
Organizations
- Air Force Institute of Technology