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A rigid pavement is on a highway with two lanes in one direction, and the pavement is conservatively designed. The pavement has an 11-inch slab with a modulus of elasticity of 5,000,000 lb/in2 and a concrete modulus of rupture of 700 lb/in2, and it is on a soil with a CBR of 25.
The design drainage coefficient is 1.0, the overall standard deviation is 0.3, and the load transfer coefficient is 3.0. The pavement was designed to last 20 years (initial PSI of 4.7 and a final PSI of 2.5) with 95% reliability carrying trucks with one 18-kip single axle and one 28-kip tandem axle.
However, after the pavement was designed, one more lane was added in the design direction (conservative design still used), and the weight limits on the trucks were increased to a 20-kip single and a 34-kip tandem axle (the slab thickness was unchanged from the original two-lane design with lighter trucks).
If El Niño has caused the drainage coefficient to drop to 0.8, how long will the pavement last with the new loading and the additional lane (same volume of truck traffic)?
Using Multisim, design a system using the photoconductive cell shown in the figure below to measure and display light intensity. Make the design such that 20 to 100mW/cm2 produces an output of 0.2 to 1.0V. What is the readout error when the intensi..
An open-end mercury manometer is connected to a low-pressure pipeline that supplies a gas to a laboratory. Because paint was spilled on the arm connected to the line during a laboratory renovation, it is impossible to see the level of the manomete..
A copper metal wire is used as a strain gauge. The resistivity is 1.68x10-8 ?.m at 20. The length and cross-sectional area of the wire are 5mm and 4*10-4 m2. The material elongates by an amount of 0.2mm in 0.2mm increments until it reaches 6mm in len..
Challenges in harness big data and relevant analytic for effective, timely inputs to strategic decision making
1 In a communication network, point A sends a signal to point B, which relays the signal to point C. I here is a probability of 0.2 that there will be an error in the signal from A to B.
Fixed point and floating point implementation of the radix 2 FFT algorithm. Comparison of accuracy of the fixed point with floating point, sensitivity analysis to word size, pre-scaling and rounding.
Determine the adequacy of the section to carry the load combination of dead and live load. Assume the ends of the beam are fully restrained.
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ELEC 20007 Microcontrollers Lab - evaluate the presentation using the evaluation form and Simple traffic light control system using PIC 16F877A.
Describe term Public Relations Research
Determining the shape of shafts and the size of shafts - Detail the unit operations within a conventional drill and blast shaft sinking operation including the shaft bottom operations as well as those undertaken on the sinking stage.
Computer and software purchases are capital expenditures, even though the expected useful lifetime of computer hardware and software has decreased in recent years because of rapid technological change.
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