# 8.11.2.99 IfcThermalExpansionCoefficientMeasure

## 8.11.2.99.1 Semantic definition

IfcThermalExpansionCoeffientMeasure is a measure of the thermal expansion coefficient of a material, which expresses its elongation (as a ratio) per temperature difference. It is usually measured in 1/K. A positive elongation per (positive) rise of temperature is expressed by a positive value.

Type: REAL

## 8.11.2.99.2 Formal representation

TYPE IfcThermalExpansionCoefficientMeasure = REAL;
END_TYPE;