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A city near the epicenter of an earthquake sustains major damage to poorly constructed building, althought hospital and schools designed to resist dmage from ground motion sustsain only minor damage. Tall, thin structure as chmney and towers topple throuhgout the city, and nwely deposited mounds of sands are found on th ground surface near the river. What was the intensity of the erthquaker?
If the allowable stress in the cylinder is 55 MPa, what is the maximum internal diameter (nearest integer, such as 10, 11, 12, …., in units of millimetres) of the cylinder?
A triaxial test was performed on a dry, cohesionless soil under confining pressure of 144 kN/m^2. If the sample failed when the deviator stress reached 395.8 kN/m^2, determine the soil's angle of internal friction.
A fellow I know wanted to know the coefficient of friction between steel and commercial carpet. The value was not in the tables of any textbook he had, so he devised an experiment.
An electrostatic precipitator for a coal-fired power plant has an overall particulate recovery of 95%. The company engineer decides that this is too good, that it is not necessary to be this efficient
A log that is 2 ft in diameter is to be cut into a rectangular section for use as a simply supported beam. The material is wood select structural grade (Douglas Fir) with a specific gravity of 0.017 lb/in3.
A waste heat source is available at 400°C. A heat engine operates using heat from this source. It rejects heat to the surroundings at 38°C. The power from the engine runs an air conditioner to keep the air inside a building at 25°C
Design a spreadsheet to estimate the dimensions of a tank for holding water. The spreadsheet should use input values from the user to return the height and diameter for a tank that will use the smallest amount of steel and therefore cost the least to..
A gas containing 80% CH4 and 20% (by mole) He is sent through a quartz diffusion tube to recover the He. 20% by weight of the original gas is recovered and its composition is 50% He.
a 110 cubic centimeter volume of clay weighs 145 g in its undisturbed state. when the clay specimen is dried it weighs 110.5g. what is the natural water content of the clay, and what is the degree of saturation Assume Gs=2.70
What is the force of the water on a spillway whose upstream depth is 1.2m and whose downstream depth is 0.2m. The width of the spillway is 3m.
The shape below has a cut along the entire length of the member thus making it an open section. The uniform thickness is 0.125in. Determine the maximum shear stress for the shape. Compare the stress for this open shape to a shape without a cut.
Determine the maximum bending stress that will occur in a timber beam of rectangular section 250mm x 80mm when a bending movement of 500N is applied about the x-x axis
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