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A Timber power-line pole is 10 in. in diameter at its base where it is solidly embedded in concrete. The pole extends 20 ft vertically upward from its base and is subjected to a horizontal pull of 300 lb at its top. Calculate the maximum bending stress and the maximum shear stress produced in the pole.
Given the binary variables x1,x2,x3,x4 and x5, formulate a set of constraints that will enforce x3,x4, and x5 to equal one if x1=1 and x2=0.
a standard reverse-flow cyclone with a length of 5cm has a cut diameter of 250 microns. at a flow rate of 10^-7 m^3/s, what would the diameter corresponding to 90% removal be
A car traveling over a hill at constant speed starts to lose contact with the ground at O. If the radius of curvature of the hill is 85 m, determine the speed of the car at O.
The point of intersection of the tangents is located at station (948+67.32). If the design speed of the highway is 60mi/h, determine both the point of tangent and the deflection angles to whole stations for laying out the curve. Select appropriate..
A vertical curve is to connect two tangents that intersect at station 50+00 and the elevation 500.00ft. The back tangent gradient is -4 percent, the forward tangent gradient is 2 percent, and the elevation of the curve at station 48+50 must equal ..
To verify the constant of a particular prism, a straight line EFG is laid out. The EDM instrument is first set up at E, with the following measurements recorded: EG = 426.224 m, EF = 277.301 m.
How many hours should it take an articulated wheel loader equipped with a 4 yd3 bucket to load 3,000 yd3 of gravel from a stockpile into rail cars if the average haul distance is 300 feet one way
A steel bar of length 30 inches and circular cross section whose diameter varies linearly from 0.50 inches at one end to 0.75 inches at the other is subjected to an axial tensile force of 4.5 kip. Find the change in length of the bar.
A study of the traffic using a tunnel showed that the following speed-concentration relationship applies. Find the capacity of the tunnel, the values of speed and oncentration at capacity, and the jam concentration.
A haul fleet of trucks having a heaped capacity of 15 cy. is to be loaded by a hydraulic backhoe excavator (CT=.48 min.) with a 3 1/2 cy. heaped capacity. Assume the material is a wet loam that weighs 3380 lb/cy in the bank state
The forward direction is given by the alphabeteical order of the station names. Each angle is measured clockwise from the back direction to the forward direction so that they are on the left of the traverse looking forward.
A 2.0m-wide strip at a depth of 1 m in a stiff clay carries a wall load of 425 kN/m. The saturated unit weight of the caly is 20kN/m^3. TRiaixal tests give the following results: c'=10 kPa, phi'=28 degree, cu=105kPa, and phi_u = 0.
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