Thermal expansion and contraction must be considered when designing with ALPOLIC®. To calculate thermal expansion/contraction, use the following equations:
Thermal Expansion/Contraction (inches) = 12 x Cth x ΔT(°F) x L(feet)
Cth = Coefficient of thermal expansion (13 x 10*) Add superscript of -6 after 10.
L = Length of ALPOLIC panel
ΔT = Ta – Ti where Ta is the actual temperature and Ti is the temperature when ALPOLIC was fabricated or installed. A positive ΔT indicates expansion and negative ΔT indicates contraction.