Piping & Structural

Piping and structural calculators assist HVAC engineers with the mechanical and physical aspects of system installation. This section includes tools for calculating duct friction loss, round-to-rectangular duct equivalents, pipe pressure drop for hydronic systems, and structural considerations for rooftop equipment on pitched surfaces. These calculators are essential during design when determining duct dimensions that meet both airflow and noise criteria, or when sizing piping for proper flow velocity and acceptable pressure loss. They are also used in the field to verify that installed ductwork and piping will perform as designed. Each tool applies standard engineering references such as ASHRAE duct fitting databases and Darcy-Weisbach pipe friction calculations.