Expansion Loop
Definition
A U-shaped or Z-shaped configuration in piping that absorbs thermal expansion through bending rather than developing axial stress. The loop flexes as the pipe expands, keeping stresses within acceptable limits.
Practical Note
Loop leg length L ≈ √(3 × D × ΔL), where D is pipe OD and ΔL is thermal expansion. Larger diameter pipes and longer expansions require longer loops or expansion joints instead.
Related Calculators
🌡️Thermal Expansion Calculator
Calculate dimensional changes due to temperature variation using linear thermal expansion. Includes thermal stress calculation for constrained members and material CTE database.
🔧Pipe Pressure Drop Calculator
Calculate pressure drop in straight pipes using the Darcy-Weisbach equation. Determine flow regime, friction factor, and head loss.