The 11 a.m. Dec. 2 Internet seminar will be hosted by Eli Howard, executive director of SMACNA’s technical resources department, and Mark Terzigni, a SMACNA project manager.

Contractors can learn all about duct leakage during an upcoming Webinar sponsored by the Sheet Metal and Air-Conditioning Contractors’ National Association.

The 11 a.m. Dec. 2 Internet seminar will be hosted by Eli Howard, executive director of SMACNA’s technical resources department, and Mark Terzigni, a SMACNA project manager. The two will explain how to perform duct calculations manually and how to use the tables and charts provided in SMACNA’s HVAC Air Duct Leakage Test Manual. Other topics include duct leakage as it relates to building codes and Leadership in Energy and Environmental Design, and the misconceptions and myths of leakage.

The seminar is aimed at project managers, estimators, engineers, shop superintendents, field supervisors, foremen, lead journeymen, designers, and people involved in testing and balancing work, officials said.

The cost is $95 for SMACNA members and $145 for nonmembers. Registartion details are available atwww.smacna.org.