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Design a simple concrete mixture. Mix it and pour some test cylinders for several water cement ratios. Cure and test the cylinders. Plot a graph of concrete strength versus water cement ratio.
Determine the required constant tension TB if the speed of the tape is increased by 4 m/s in 0.3 seconds and the corresponding tension in the portion of the tape between the drums.
The end caps are spherical. The cylinder has length of 30 inc., a diameter of 8 in., and a wall thickness of 0.125 in. Determine the stress in the wall at two points A and B. For each, draw the stresses on a 3-D element. Treat the upper cap as spheri..
What soil conditions favor the use of belled caissons?
Water is pumped from a reservoir whose surface elevation is 1390 ft to a second reservoir whose surface elevation is 1475 ft. The connecting pipeline is 4500 ft long and 12 in. in diameter. If the pressure during pumping is 80 psi at a point midway o..
By continuous discharge measurements the discharge in stream was determine over a 3-year period. After the data were assembled, it was found that the discharge exceeded 120 cfs 3 percent of the time;
The allowable shearing stress is 15 ksi in the steel rod AB and 8 ksi in the brass rod BC. Knowing that the torque of magnitude T=10 kip * in. is applied at A, determine the required diameter of a) rod AB, b) rod BC.
The bent road has an E=200 GPa, G=75 GPa, and a radius of 30 mm. Use Castigliano's theorem and determine the vertical deflection at C. Include the effects of bending, shear, and torsional strain energy.
need to design a cantilever retaining wall 8m high saturated unit weight is 16knm3 surcharge is 7knm2 load above wall
A ball is dropped from a boat so that it strikes the surface of a lake with a speed of 19.5ft/s. While in the water the ball experiences an acceleration of a = 10 - 0.8v, where a and v are expressed in ft/s^2 and ft/s, respectively
What is the Station and Elevation of the turning point (high point)? What is the Elevation of Station 16+00?
If log KSO, calcite (CaCO3(s)) = -8.61 at 50 oC, would calcite be over- or under- saturated in a hot water heater at 50 oC if the water was in equilibrium with calcite at 25 oC (log KSO = -8.30) when it entered the house
The total flow then moves to a point W on the traction drive two metres off the ground, and travels through a nine millimetre diameter conduit. Ignoring all friction and minor losses, determine the pressures at points H and W.
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