Answer:
Engineering Controls. The best engineering controls to prevent heat-related illness is to make the work environment cooler and to reduce manual workload with mechanization. A variety of engineering controls can reduce workers' exposure to heat: Air conditioning, Increased general ventilation
, Cooling fans
, Local exhaust ventilation at points of high heat production or moisture, Reflective shields to redirect radiant heat
, Insulation of hot surfaces Elimination of steam leaks
, Cooled seats or benches for rest breaks
, Use of mechanical equipment to reduce manual work, Misting fans that produce a spray of fine water droplets.
Hope this helped you!
Explanation:
Answer:
slenderness ratio = 147.8
buckling load = 13.62 kips
Explanation:
Given data:
outside diameter is 3.50 inc
wall thickness 0.30 inc
length of column is 14 ft
E = 10,000 ksi
moment of inertia ![= \frac{\pi}{64 (D_O^2 -D_i^2)}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%5Cpi%7D%7B64%20%28D_O%5E2%20-D_i%5E2%29%7D)
![I = \frac{\pi}{64}(3.5^2 -2.9^2) = 3.894 in^4](https://tex.z-dn.net/?f=%20I%20%3D%20%5Cfrac%7B%5Cpi%7D%7B64%7D%283.5%5E2%20-2.9%5E2%29%20%3D%203.894%20in%5E4)
Area ![= \frac{\pi}{4} (3.5^2 -2.9^2) = 3.015 in^2](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%5Cpi%7D%7B4%7D%20%283.5%5E2%20-2.9%5E2%29%20%3D%203.015%20in%5E2)
![radius = \sqrt{\frac{I}{A}}](https://tex.z-dn.net/?f=radius%20%3D%20%5Csqrt%7B%5Cfrac%7BI%7D%7BA%7D%7D)
![r = \sqrt{\frac{3.894}{3.015}](https://tex.z-dn.net/?f=r%20%3D%20%5Csqrt%7B%5Cfrac%7B3.894%7D%7B3.015%7D)
r = 1.136 in
slenderness ratio ![= \frac{L}{r}](https://tex.z-dn.net/?f=%20%3D%20%5Cfrac%7BL%7D%7Br%7D)
![= \frac{14 *12}{1.136} = 147.8](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B14%20%2A12%7D%7B1.136%7D%20%3D%20147.8)
buckling load ![= P_cr = \frac{\pi^2 EI}}{l^2}](https://tex.z-dn.net/?f=%3D%20P_cr%20%3D%20%5Cfrac%7B%5Cpi%5E2%20EI%7D%7D%7Bl%5E2%7D)
![P_{cr} = \frac{\pi^2 *10,000*3.844}{( 14\times 12)^2}](https://tex.z-dn.net/?f=P_%7Bcr%7D%20%3D%20%5Cfrac%7B%5Cpi%5E2%20%2A10%2C000%2A3.844%7D%7B%28%2014%5Ctimes%2012%29%5E2%7D)
![P_{cr} = 13.62 kips](https://tex.z-dn.net/?f=P_%7Bcr%7D%20%3D%2013.62%20kips)
Answer:
When a pilot pushes the top of the right pedal, it activates the brakes on the right main wheel/wheels, and when the pilot pushes the top of the left rudder pedal, it activates the brake on the left main wheel/wheels. The brakes work in a rather simple way: they convert the kinetic energy of motion into heat energy.