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1.Select the lightest W 14 shape that will support a live load of a 400 kips and a dead load of 75 kips for 20 feet tall column that is fixed at its top and bottom.
2.If a 24' tall W 14 x 120 column has simple end connections, determine the maximum design compression strength of the column.
The two disks each have a mass of 18 kg and are attached at their centers by an elastic cord that has a stiffness of k= 1.6 kN/m. Determine the stretch of the cord when the system is in equilibrium and the angle of the cord.
Near the point (x, z) =(3,2) in a flow with a zero y-component (v=0), the velocity component are described by u =3x-3z, and w = 6-4z+ x. The velocities u and w are in m/s and are in the x- and z- directions, respectively.
Determine the transformed moment of inertia for the beam using steel as the reference material. Express your answer in in^4 to the nearest 0.1 in^4.
Draw the influence line for the shear at point B. Plot numerical values every 5 ft. Assume the support at A is a roller and C is fixed. EI is constant.
Estimate the liquid volume of an aeration tank (units of m^-3) required to treat the following wastewater to a BOD effluent standard of 30.0 mg L^-1 and a suspended solids effluent standard of 30 mg L^-1.
Design a hardwood beam to support a uniformly distributed load of 20 kN over a simply supported span of 8 m. consider bending strength only. Assume that the weight of the beam is 2 kN.
A train which is traveling at 80 mph applies its brakes as it reaches point A and slows down with a constant deceleration. Its decreased velocity is observed to be 60 mph as it passes a point 1/2 miles beyonds A.
A first order reaction is employed in a destruction kind of a certain kind of microorganism. ozone is used as the disinfectant and the reaction is found to be dC/dt=-kC. where C is the concentration of microorganisms, microbes/ml. K is the rate const..
Determine the degree of saturation of a sample of soil given that its maximum dry unit weight is 18 kN/m^3 and its optimum moisture content is 12.1%. Assume the Specific Gravity of soil is 2.65.
A bridge is subjected to a load of 10,000 kN at its mid span, yielding a displacement of 5 millimetres at that location. What will be the bending stiffness of the bridge in this case (make sure the unit is given)
A projectile is fired up into the air at a speed of 161 m/s at an angle of 64° relative to the horizontal. Determine the maximum height the projectile will reach.
Draw the influence line for the support reaction at A and calculate the support reaction at point
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