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1.1 ,This test method covers two procedures for determining the compressive resistance of thermal insulations.
1.1.1 ,Procedure A covers thermal insulations having an approximate straight-line portion of a load-deformation curve, with or without an identifiable yield point as shown in Figs. 1 and 2. Such behavior is typical of most rigid board or block-type insulations.
FIG. 1 ,Procedure A—,Straight Line Portion with Definite Yield Point