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Determine the factor of safety for a 9 foot long hollow steel column 3.5 inches on a side that has a wall thickness of 0.225 inches and is loaded with a 22 kip load. Use the steel E of 29 *10 ^6 psi and assume the column is pin connected at each end.
Plot the distribution of vertical effective stress and porewater pressure with depth if the void ratio of the sand is 0.6 and the degree of saturation is 90%. Neglect pore air pressure
Two links AB and B, each 25 in. long are connected at B and guided by hydraulic cylinders attached at A and D. Knowing that D is stationary and that the velocity of A is 30 in./s to the ight
Shaquille O Neal, who is listed as 7`1" tall is out of the NBA Playoffs and so has time to visit is pool. If he stands vertically in the water, completely submerged
the wastwater has a BOD5 of 1200 mg\liter that must be reduced to 200 mg\liter.if the mean cell residence time 5 days and suspended solids concentration of 5000 mg\liter and Y 0.7 kg\kg and kd 0.03 \day determine sludge recycle ratio R
A supertanker has length, breath, and draught (fully loaded) dimensions of 325m, 48m, and19m, respectively. In open seas the tanker normally operates at a speed of 115 kt (1 kt=0.515m/s).
The traffic that makes a left turnat an intersection consists of two types of vehicles, Type A andB. A type A vehicle is twice the length of the type B. THe left turn lane can accommodate ten vehicles of type B, five oftype A.
An engineer in a developing country observes that his project bankaccount has grown from 1,600,000 to 1,769,279 (local currencyunits) in 20 days with no deposits or withdrawals being made.
An unconfined, gravel-sand aquifer has a porosity of 0.23, and a hydraulic conductivity of 1000 m/day. Two monitoring wells are 260 m apart, and the difference in their water levels is 0.3 m.
An Electrostatic Precipitator must treat 500,000 acfm with 99% efficiency. Assuming an effective drift velocity of 0.4 ft/sec, calculate the required plate area in ft^2, and the number of plates if each is 20 ft tall by 10 ft long, and there are 4..
The 90-lb boy and 75-lb girl wald towards eachother with constant speed on a 330-lb cart with frictionless wheels. assume that the cart was at rest befor the boy and girl start walking.
in the first couple steps you are using the sine function to derive that the interior triange BCG is a right triangle. However, the sine function, by definition, is opposite divided by hypotenuse.
Water ?ows at 6 ft/ s through a pipe 500 ft long with diameter 1 in. The inlet pressure p1= 200 psig, and the exit section is 100 ft ft higher than the inlet.
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