For 1 1/4 inch or larger vertical pipes, how often should they be hung per floor level?

The spacing for hanging vertical pipes is an essential aspect of plumbing installation, ensuring that pipes are securely supported to prevent sagging, misalignment, and potential damage. For pipes that are 1 1/4 inch or larger in diameter, the appropriate practice is to hang them at every floor level. This guideline is based on maintaining structural integrity and minimizing the risk of stress on the piping system due to weight and movement.

Hanging the pipes at each floor level helps distribute the support evenly and accommodates any thermal expansion and contraction that might occur with variations in temperature. This approach also allows for easy access for any maintenance or inspections needed in the future while ensuring the pipes remain stable throughout their vertical runs.

Other options, such as hanging pipes at every ceiling or wall, do not offer the same level of support throughout the vertical run. Conversely, hanging pipes every meter does not align with building codes or best practices that are specifically designed for larger pipe diameters, where more frequent support is necessary to ensure proper function and safety.