1. The Student Center doors (Tall door on the first floor) require about 3x more force than is recommended to open a door. What impact type of injuries could result? Suggest cost effective designs to correct the problem.

2-What is the velocity of air flowing through an 8 inch diameter duct if the velocity through a 6 inch diameter duct is 2000 fpm?

3-Calculate the static pressure of a duct if the velocity pressure is 1.25" water gauge (wg) and the total pressure on the inlet side of the fan measures 0.8" wg.

4-What is the velocity pressure of air within a duct when the average velocity is 4500 fpm?