Traffic on a section of an arterial road is flowing at a space mean speed of 40km/hr. The flow of traffic on the road section can be described using the following equation (where q represents flow in veh/hr and k represents the density in veh/km): q = 50 * (k - k^2/150) A slow moving heavy vehicle turns onto the roadway at 2pm, 2km from the beginning of the arterial road, driving at 15km/hr due to its heavy load. The vehicle impedes traffic; however, vehicles can pass the slow-moving vehicle resulting in an average space mean speed of 20km/hr upstream of the heavy vehicle. The heavy vehicles leaves the arterial road 15km after joining the traffic stream and at this point in time vehicles begin to move at the maximum flow rate. Use a space time-diagram and shock wave theory to describe this traffic event. Not all trajectories need to be presented; representative trajectories should be used to describe the flow across all the different traffic regions. Determine the speed of each shock wave, the points of intersection of each of the shockwaves and the time taken for the congestion to dissipate (maximum queue to be released).

What is Class B Concrete? and Before you select your concrete supplier, what is required?

A radioactive waste from a clinical laboratory contains 0.2 μCi (microcuries) of calcium-45 (45Ca) per litre. The reaction rate constant is 0.005/day. The radioactive calcium waste is treated in a pipe that is 200 m until it reaches below the maximum acceptable radioactivity of 0.01 μCi/L. Assume the pipe approximates a plug flow reactor

(d) Radioactive waste can be stored in a number of ways with two of the most common being deep well injection and above-ground storage (as per the example above). For deep well injection the radioactive waste is pumped hundreds or even thousands of metres below the surface of the Earth. Whereas, above-ground storage is often in buildings in isolated areas that are then guarded to prevent people from accessing the radioactive waste contained within.

What would be the advantages and disadvantages associated with each of these two methods of storing radioactive waste? Which of the two methods do you believe is superior for storing radioactive waste (explain why as part of your answer)?

9.20) A groundwater aquifer is contaminated with benzene. Contrast the relative effectiveness of air stripping to activated carbon adsorption by providing a preliminary design of each process.

10.5) Contrast the three categories of solid-phase treatment.

1. How much load can safely be carried by a 20 m long, 0.3 x 0.3 m square concrete pile driven in very stiff clay. Address the safe load issue but not the settlement issue. Soil properties: su = 100 kPa, q_c = 5 MPa, f_c = 70 kPa, p_L = 500 kPa, E₀ = 7.5 MPa, C_c = 0.3, c_v = 10-4 cm²/s, γ = 18 kN/m³. If you need additional properties assume reasonable values.

SOLVE USING MATLAB

Consider the world oil production data of Computer Problem 3.2.3. Find the best least squares (a) line, (b) parabola, and (c) cubic curve through the 10 data points and the RMSE of the fits. Use each to estimate the 2010 production level. Which fit best represents the data in terms of RMSE?

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

What are the Engineering Ethical issues Such as (such as rights and obligations; conflict of interest; professionalism and mentoring; confidentiality; whistleblowing; bribery, fraud, and corruption) That Leads to the collapse of the WEST GATE BRIDGE in Melbourne Australia and how these can be prevented? Please write in essay style.

I will give you thumbs up just do it.

The center of buoyancy of a floating body is at x = 0, z = 0 and its center of gravity is at x = 0, z = 0.9 where (x, z) are the horizontal and vertical coordinates. The body is tilted through an angle θ = 5◦ so that the center of buoyancy shifts to x = 0.1, z = 0. Will the floating body (a) Return to its undisturbed configuration (b) Move further away from its undisturbed configuration ?

1. How long of a 3/8” weld is required for to support the yield load of an L5x5x1/2 if it is applied to:
   1. Only the side with the outstanding leg
   2. Only the side of the attached leg

Confirm Continuous-Flow Stirred Tank Reactors (CFSTRs) in-series approximate a Plug-Flow Reactor (PFR).

1) Assume steady-state and 1st order reaction kinetics

2) The total volume of the CSFTRs in-series is equal to the volume of the PFR.

3) Also, the total Hydraulic Retention time (HRT) of the CFSTRs in-series is equal to the HRT of the PFR.

Please discuss.

Let’s assume that the Chief Engineer has asked you to recommend a material for the design of a critical load-bearing structural element. It is critical since if it fails it can have a catastrophic impact on the performance of the system. For example, if a turbine blade fails in a jet engine, it can destroy it. The Chief has given you a choice between a low density, high stiffness but brittle ceramic material or more ductile, higher density, low stiffness metal material. Your task is to recommend which material is best suited for the design requirement.

Start by drawing a generic stress-strain curve for a brittle material and for a ductile material. Describe the curves and defend which one you would rather use to design a critical element of your structure.

TRANSPORTATION ENGINEERING: A multilane highway has four lanes (2 in each direction) and a measured FFS of 55 mph. One upgrade is 5% and 0.62 miles long. Currently trucks are not permitted on the road, but there are 2% busses in the directional volume of 1900 vehicles (PHF is 0.80). Local authorities are considering allowing trucks into the traffic stream. If this is done, they estimate 150 trucks will use this highway during peak hour. Before trucks, the driver population factor is 1, and it goes to 0.97 after trucks. What will be the level of service before and after trucks are allowed on the road.

1. How is a brick veneer wall built? What are the correct steps in this process?

2. Why do we need to use an SW brick for an exterior wall in New England? And what type of mortar should we use?

how would the car react to a temporary signage (construction) traffic cops,or ambulance with sirens trying to pass them?