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A rod of steel is 20 m long at a temperature of 200C. find the free expansion of the rod when the temperature is raised to 650C. Find the temperature stress produced : (i) when the expansion of the rod is prevented (ii) when the rod is permitted to expand by 5.8 mm. Take a=12×10-6 per 0 C (coefficient of thermal expansion) and E=2×105 N/mm2.
A rectangular beam made using concrete with f'c = 6000 psi and steel with fy=60000 psi has a width b= 20 in. The concrete modulus of rupture fr=530 psi.
many years ago well-known architect frank lloyd wright nbspdesigned a mile-high skyscraper which has never been built.
What is the elongation of a rectangular bar (cross section 2 inch * 2 inch length 4 ft) When it is subjected to an axial load of 80,000 lbs. Assume the material of the bar has the following properties G = 7,700 KSI, V =0.30
An industry discharges .5m^3/s of waste with a 5 day CBOD of 500 mg/l to a river with a flow of 2 m^3/s and a 5 day CBOD of 2 mg/l calculate the 5 day CBOD of the river after mixing with the waste.
Atmospheric air is at 101 kPa (abs) and 25 degrees C. Determine (a) the density of the air (b) the molar specific volume of the air. Work out problem completely please. I already have the answers a) 1.18 kg/m^3 b) 24.5 m^3/kmol
Two surfaces of a 2cm thick plate are maintained at 0*C and 80*C, respectively. Heat is transferred through the wall at a rate of 600 W/m^2., determine its thermal conductivity,k.
The BOD5 of the influent wastewater is 150 mg/L and the first-order reaction rate for the degradation of BOD5 is 0.6/hr at 20°C. If the required effluent BOD5 is 20mg/L
where u(t) is in vehicles per minute and t is in minutes. When will the queue clear?
A separate hopper-bottomed grit storage tank has a usable volume of 3 cubic yards. Compute the detention time in the aerated unit and the estimated length of time required to fill the storage tank with grit.
Make a sketch indicating the incorrect and correct positions of such an original section corner and also the positions of the adjacent corners used in relocating that corner
Civil and Environmental Engineering Question, 1. How is the problem of technology choice related to process selection and product design?
Benzene is to be absorbed from coal gas by means of a wash oil. The inlet gas contains 3% by volume of benzene, and the exit gas should not contain more than 0.02% benzene by volume.
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