Abstract
This report focuses on the consideration of limited pressure graph in air ducts. We calculated the pressure that the element of the air duct breaks with the prediction expression. The predicted value is compared with the specification of the air duct sizes that SHASE determined. As the results, almost elements of the air duct meet the standard. However, the bending strength of the TDC duct's flange is weaker than the flange of the angles ducts. We got observations concerning the air duct size and strength.
