Final answer:
Expansion joints are used to compensate for hygrometric and thermal expansion in long partition runs. They allow for the expansion and contraction of the material without causing damage. These joints are commonly used in structures like bridges and roadways.
Step-by-step explanation:
Long partition runs shall have Expansion joints to compensate for hygrometric and thermal expansion. Expansion joints are designed to allow for the expansion and contraction of the material due to temperature changes without causing damage or buckling. They are commonly used in structures such as bridges, roadways, and railway tracks to prevent buckling or sagging under thermal stress. These joints provide flexibility for the material to expand and contract while maintaining structural integrity.