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A Firefighter’s Guide to Foam
www.foamtechnology.us3. HIGH EXPANSION – Expansion ratio above 200:1. High Expansion foams are designed for confined space firefighting. High expansion foam concen-trate is a synthetic, detergent-type foaming agent used in confined spaces such as basements, mines and ship board when used in combination with a High Expansion Foam Generator.
Chapter 2 Thermal Expansion - Rice University
www.owlnet.rice.eduhigh expansion should be considered when alu-minum is used with other materials, especially in rigid structures, although the stresses developed are moderated by the low elastic modulus of alu-minum. If dimensions are very large, as for ex-ample in a light alloy superstructure on a steel ship or where large pieces of aluminum are set on