Engineering, 06.05.2020 01:32 ajsoccer1705
Engineers are planning to build a highway that runs through a forest (0% impervious). However, the new regional regulations specify that the development of the area cannot increase the runoff of TKN (Total Kjeldakl Nitrogen) to the nearby river. The highway section going through the forest will be built of conventional materials (100% impervious), it is 5 miles long, and contains 4 lanes (12 ft wide each). The annual rainfall in the region is 41 in and 80% of the annual rainfall generates runoff. What is the annual TKN load increase due to the construction of the highway (in kg/yr)? If you were to build this road with permeable pavement and wanted to store 100% of the runoff volume generated, what would the depth of the permeable pavement layer have to be (in ft). Consider the porosity of that layer to be 0.4. After obtaining your final answer, please answer the following questions: 1) What does the final number mean? 2) Is this number reasonable? 3) What would be your recommendation for the highway administrators if this number is not reasonable?
Answers: 3
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Engineering, 04.07.2019 18:10
Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
Answers: 1
Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
Engineering, 04.07.2019 18:10
What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information
Answers: 3
Engineers are planning to build a highway that runs through a forest (0% impervious). However, the n...
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