An air particulate control (APC) device has the theoretical efficiency/particle size relationship given in the Table below. Use the particulate size distribution data from Q1 above to calculate the overall removal efficiency of this APC. Size range (um) Efficiency (%) 0-2 10 2-4 25 4-7 45 7-10 70 10-15 85 15-25 95 25-40 97 40-60 98 >60 100

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Mechanical Processes

In civil engineering, the materials have to undergo a series of manufacturing processes before using them in construction and structural applications. These manufacturing processes form the foundation stone of mechanical processes. Some of the civil engineering materials such as bars, metallic beams, metallic columns, surveying equipment, earthmovers, overhead cranes, structural and construction components, and even cement that is the most fundamental construction component need to undergo different manufacturing processes before they are ready to use. These processes are mechanical.