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1.In dredged reclamation, what are the considerations in selecting between trailer suction hopper dredgers and grab dredgers?
2.Determine the moment about the orgin O of the force F = -2i + 3j + 5k that acts at a point A. Assume that the position vector of A is (a) r = i + j + k, (b) r = 2i + 3j - 5k, (c) r = -4i + 6j + 10k
3.Problem:
Determine the ASD reference and adjusted design values for the following members and loading conditions. All members are Select Structural Southern Pine and are fully braced to prevent lateral torsional buckling. Bending Occurs about the strong axis.
Given:
1. Roof joists are 2x6 at 24 inches on center which directly supports the roof sheathing. Loads are D+S
2. A 4x12 that supports D+L+Lr
3. Purlins in a roof are 2x10 inches at 4ft on center. Loads are D+Lr
4. Floor beams are 4x10 at 4ft on center. Loads are D+W+L
A four-lane freeway (two lanes in each direction) is on mountainous terrain with 11ft lanes, a 5ft right-side shoulder, interchange spacing of one every 10 miles, and a 60mph base free-flow speed.
You are designing a highway bridge. In particular you aretrying to determine how to put the road surface on the bridge. Youlive in an area where the maximum summertime temperature is 40 degrees centigrade and the minimum winter temperature is -30degr..
Plot a curve showing the relationship of Se versus L/r for steel columns. Draw the curve for slenderness ratios that vary from 0 to 200. Assume the proportional limit = 235 MPa
At the instant when angle theta= 50 degree, the horizontal guide is given a constant upward velocity v0 = 1.3 m/s. For this instant calculate the force N exerted by the fixed circular slot and the force P exerted by the horizontal slot on the 0.60..
the long-term average january precipitation in the colorado river basin is 1.11 inches with a standard deviation of
Shear and normal stresses on aplane that is 37 degrees from horizontal
The mine's operating costs were projected at $900,000 per year including $400,000 of fixed costs and $500,000 of variable costs. Ms. Peru thought these forecasts accurate.
For the following velocity profiles state whether they are steady or unsteady and whether they are 1-D, 2-D or 3-D.
A wheel has an initial clockwise angular velocity of 12 rad/s and a constant angular acceleration of 3 rad/s2. A) Determine the number of revolutions it must undergo to acquire a clockwise angular velocity of 15 rad/s.
Titan, a moon of Saturn, is believed by astronomers to have an atmosphere that is about 95% nitrogen. At Titan's surface the acceleration due to gravity is 1.35 m/s2, the atmospheric pressure is 210 kPa, and the temperature is 94 K.
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 simple supported beam 6m long is composed of two C200x28 channel RIVETED FRONT TO FRONT . What uniformly distributed load can be carried in addition to the weight of the beam w/o exceeding a flexural stress of 125MN/m^2
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