To get base pay: Are you OHSA certified? Have you worked on a construction site? Have you worked in a manufacturing facility? Are you afraid of heights/ tight places? Have you worked with fall-arrest before? How do you calculate the area of a circle? To be payed adequately: How do you calculate the propellor size of a fan? How do you calculate the temperature of a fluid given x,y,z? How can you measure the speed and velocity of air or a fluid moving through a confided space? What type of pressures can me measured in a moving fluid?