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A cable is used to support five equal and equidistant loads over a spann of 30 metres. Find the length of the cable required and its sectional area if the safe tensile stress is 140N/mm2. the central dip of the cable is 2.5m and loads are 5kN each.
Total stress analysis is usually preferred for construction of embankments and for excavations, we use effective stress analysis, but why? Total stress is Undrained strength of the soil
An asphalt mixture is placed and compacted. Two tests are taken from the compacted mixture and checked for density. Core 1 had a density of 2403 kg/m3 and an air void content of 6.5%. Core 2 had a density of 2419 kg/m3.
The median value of the rupture strength was 300 MPa. The ceramic is to be used for components with dimensions l=50mm, b=d=5mm loaded in simple tension along their length. Calculate the tensile stress that will give a probability of failure of the..
Explain how mechanical strength, melting temperature , and thermal exapntion are related at the atomic level. specifically, how do they relate to each other and the bonding energy between the atoms
Oil with a kinematic viscosity of 0.0035ft3/s flows through a 4-in-diameter pipe with a velocity of 15ft/s. What will be the approximate distance from the pipe entrance to the first point
A rectangular channel 5 m wide carries a discharge of 10 m^3/s at a uniform depth of 3 m. The channel is running on a slope of 0.0025 m/m. Estimate wall shear stress and friction velocity. Assume the density of flowing water as 1000 kg/m^3.
The rivets are 10 mm in diameter, spaced a distance s = 24.4 mm apart, and have an average shear strength of 35 MPa. Determine the maximum internal pressure in MPa if the rivets are not to shear.
what building science principles are involved, how successful the measure is in practice, what limitations there are in using this measure, and how much can typically be saved
From a videotape, it was observed that a player kicked a football 126 {\rm ft} during a measured time of 3 seconds. Determine the initial speed of the ball and the angle(theta) at which it was kicked
A 50 meter wide rectangular channel is carrying a flow of 250 m3/s at a flow depth of 5 meters. To produce critical flow in this channel, determine
The drainage area upstream of a small dam is 20 acres. On a certainday the pond was 9 feet deep with a surface area of 1.6 acres. Thatnight, a 5.4 inch rainstorm caused a large rise in the pond
a .65% Carbon hypoeutectoid plain carbon steel is slowly cooled from 950 degrees C to just slighty above 723 degrees C calculate the weight percent austenite and weight proeutectoid ferrite in this steel
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