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A rookie crew put in the final kilometer of iron rail for a stretch of railroad. They completed the installation when the temperature was 20 degrees Celsius. When the temperature rose to 25 degrees Celsius, the rail buckled into an isosceles triangle because they had not left an expansion gap. How high was the buckle?
Set up a table showing curve elevations at the PVC, at the PVT, and at the half-station points along the curve. Compute the station and elevation of the curve turning point.
An activated sludge tank, 30 x 30 x 200 ft, is designed as a plug-flow reactor, with an influent BOD of 200 mg/L and a flow rate of 1 million gallons per day. a. If BOD removal is first-order reaction, and the rate constant is 2.5 days^-1, what is ..
A pig farmer owns a 20-arce farm and started business with 22.1 pigs. After one year, he has 319 pigs. Assuming a constant growth rate, what is the doubling time in units of days.
Determine the magnitude and direction of the force P in so that the resultant of P and the 900N force is a vertical force of 2700N directed downward using.
Design a series of closely spaced parallel box beams that will support an asphalt road surface over a 10 foot wide, 40 foot long span. The hollow box beams are made of concurred and imbedded No. 8 steel rods (1 inch dia.).
above a peninsula of land. the length of the box is 25 km, its width is 80 km, and a radiation inversion restricts mixing to 25 m. Wind is blowing clean air into the long dimention of the box at 0.8 m/s.
At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are counted in 20-second intervals, and vehicle counts are taken in 120 of these time intervals.
If an analysis is made of the hydraulic conductivity of a site using permeameter tests of core samples, slug tests of monitoring wells, and pumping tests of production wells, it is often observed that the hydraulic conductivity as measured by each..
The behaviour of structural materials using comparative statement when they are formed into structural member
A simple beam of Douglas-Fir Larch, select grade, has a span of 18 ft with two concentrated loads of 3 kips each placed at the third points of the span. Neglecting its own weight, determine the size of the beam with the least cross-section
two forces applied as shown to a hook support. knowing that the magnitude of P is 35 N, determine by trigonometry the required angle if the resultant R of the two forces applied to the support is to be horizontal and the corresponding magnitude of..
Determine the magnitudes of the additional loads that must be applied at B and F if the resultant of all six loads is to pass through the center of the mat.
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