Thermal-shock Resistance for Built-up Membranes

Thermal-shock Resistance for Built-up Membranes
Author: William C. Cullen
Publisher:
Total Pages: 28
Release: 1967
Genre: Building materials
ISBN:

The resistance of bituminous built-up roofing membranes to thermally induced forces is considered in terms of their strength properties such as breaking load in tension, modulus of elongation and apparent linear thermal expansion coefficient.The development of a Thermal-Shock Resistance Factor is described and values are given for three bituminous built-up membranes at temperatures of - 30F (-34.4C), 0F (-17.8C), 30F (-1.1C) and 73F (22.8C).The apparent relation between the values obtained in the laboratory and the observed performance of roofing membranes in service is considered.The utilization of the Thermal-Shock Resistance Factor in the reduction of potential failures of bituminous built-up roofing membranes in service from thermally induced forces is also discussed.(Author).

Essential Points Goverening the Financial Value of an Engineering Property ...

Essential Points Goverening the Financial Value of an Engineering Property ...
Author: Schuyler Renwick Schaff
Publisher:
Total Pages: 96
Release: 1912
Genre: Civil engineering
ISBN:

An engineer describes some of the basic considerations that members of the public will want to keep in mind when evaluating civil engineering and public works projects. Working with engineers can enable members of the public to determine the functionality that is required for a successful project, and gain an understanding of how engineering design factors will impact financial decisions.