... AutoCAD. Drafting features include single-line and double-line 2D ductwork with automatic fittings and 3D ductwork. Duct sizing calculations include constant pressure drop, constant velocity, and static regain. Pressure drop in the duct system can also be calculated. Building load calculations ...

ENGINEERING POWER TOOLS is powerful productivity software for professional engineers. More than 70 programs and data tables are integrated into one easy-to-use package. The programs solve a wide variety of common engineering problems quickly and easily. Eliminates wasted time, hunting for the right formula and performing repetative manual calculations. With ENGINEERING ...