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Below are some of the advantages of using precast (precast concrete), except: A. The timing of the shorter B. Control of technical quality can be achieved C. Cost cheaper D. Not affected by weather E. The structure is stronger
Consider a system that consists of 4 devices. The probabilities of failure for each of the devices are, respectively: 10%, 25%, 20%, and 30%. (a) If these components were in series, what is the probability that the system operates
A wastewater is discharged to a stream with a reoxygenation constant of 0.5 day-1 and a velocity of 1 m/sec. The oxygen saturation concentration in the stream is 11 mg/L.
What is the concentration of MLVSS in the activated sludge (mg L-1)
Flow occurs in a rectangular channel of 6 m width and has a specifi c energy of 3 m. Plot the q-curve. Determine from curve (a) critical depth (b) the maximum flow rate (c) the flow rate at a depth of 2.4 m and (d) the depths at which flow rate of 28..
Select an appropriate motor-pump unit for this job and Identify three manufacturers with product model numbers and prices. Make a selection and explain why you selected that particular product.
Water at 120 celcius with a quality of 25 % has its temperature raised 20 celcius in a constant volume process. What is the new quality and pressure? Draw P-v and T-s diagrams.
The concrete girder supports the two column loads. If the soil pressure under the girder is assumed to be uniform, determine its intensity w and the placement d of the column at B. Draw the shear and moment diagrams for the girder.
As the weather forecasters frequently state, the atmospheric pressure drops during stormy weather and it rises during clear and sunny days.
An open channel with a trapezoidal configuration with side batters 1V:3H is to be designed to carry 1.0m^3/s with a bedslope of 0.0065. The channel is lined with concrete with manning's n of 0.011.
If a truck has a capacity of 24m^3 (Heaped) and 18m^3 (struck), with a total empty weight of 31600kg (truck), and needs to move soil at a density of 1850kg.m^3 (Bank) with a swell of 41%
An observer standing on a beach can just see the top of a lighthouse 15 miles away. The eye height of the observer abouve sea level is 5.7 feet. what is the height of the lighthouse above sea level? Show your work.
The incident solar readiation (energy from the sun) on a particular day is at the rate of 100 Btu/hr for each square foot of area. Consider a solar collector with an area of 50ft^2 that concentrates the energy it collects in sucha manner that a regio..
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