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An aluminum tube of length 8 m is used as a simply supported column having both sides hinged carrying a 1.2-kN axial load. If the outer diameter of the tube is 50 mm, (A) compute the inner diameter that would provide a factor of safety of 2 against buckling. Use E = 70 GPa for aluminum. (B) Draw the mode of shapes of column buckling with Pcr values.
A waste mixture contains a variety of volatile organic compounds, nonvolatile organics, metals, and sandy soil. In a vitrification treatment,
Determine the COD, carbonaceous BOD, and nitrogenous oxygen demand of a 100 mg/L solution of urea (N2H4CO)
The structure shown consists of five pin-connected members (members AC and BD do not intersect). In addition to the 4kip force shown, the individual members of the structure have the weights listed in the table. Idealize the structure to be a trus..
The hydraulic cylinder gives pin A a constant velocity v = 2 m/s long its axis for an interval of motion and, in turn, causes the slotted arm to rotate about O.
Concrete pier is loaded on top with a uniformly distributed load of600 lbs per square foot. Investigate the state of stressat a level of 4 ft. above the base.
Assume 0.1 kg of air initially at 200 kPa and 300 K undergoes an isothermal compression process to a volume of 0.02 m3. Find the work done in the process and the final pressure. Sketch the process on a P-V diagram.
In an undisturbed soil formation, it is known that the dry soil weight is 115pcf. The specific gravity of the soil particle is 2.75.a) What is the saturation wet unit weight of the soil b) What is the submerged weight of the soil
Determine the effective size as well as the uniformity coefficient and coefficient of curvature for each soil. Determine also the percentages of gravel, sand, silt, and clay according to (a) ASTM, (b) AASHTO, (c)USCS, and (d) the British Standard.
How many tons of asphalt concrete will be required to overlay a 3-mile-long, 24-ft.-wide road with 2.5 in. of wearing course asphalt concrete that has a density of 146.3 pcf
What is the difference between determinate structure and indeterminate structure?
he causes a static deflection δst of the floor under his feet. If he walks (or runs quickly!) in the same area, how many steps per second would cause the floor to vibrate with the greatest vertical amplitude?
How many numbers consisting of five different digits each can be made from the digits 1,2,3,...,9 if (a) the numbers must be odd (b) the first two digits of each number are even
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