Title: Lay out and fabricate britches with square heel and throat.
Course: Sheet Metal II (13205-II) > Section: Performing Layout and Fabrication

Laying out and fabricating should include

- allowing airflow in two directions
- making multiple measurements across a linear plane to support turning vanes
- measuring distance along the baseline from the center of the elbow to the throat
- supporting duct work and limiting loss of air velocity.