- Author
- Pommersheim, J. M. | Mathey, R. G.
- Title
- Mechanical Performance of Built-Up Roofing Membranes. Final Report.
- Coporate
- National Bureau of Standards, Washington, DC Bucknell Univ., Lewisburg, PA
- Report
- NBS TN 1152, December 1981,
- Distribution
- Available from National Technical Information Service
- Keywords
- roofing; membranes; roofs; insulation; asphalts; bitumens; tensile properties; thermal shock; joints (junctions); mathematical models
- Abstract
- For built-up roofing membranes with either linear or non-linear stress-strain behavior, fully bonded to an underlying deck or substrate which undergoes displacement, it is the equality of the complementary strain energy of the fabric or felt layer with the strain energy of the bonding adhesive or bitumen layer, which governs both the conditions under which membrane integrity is lost and the mode of failure by either membrane splitting or adhesive bonding. The testing criteria developed are applied to a sample case.