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Refer to AASHTO T97, Flexural Strength of Concrete
a) A 6" x 6" cross section beam is tested and the break occurs 5.6 inches from one support. If P = 4920 lbs, compute R.
b) Compute P if R = 590 psi and the break occurs 9 inches from one support.
Represent each of the force systems with a force-couple system having the force act at point A. Which systems are equivalent to each other?
Reciprocal leveling gives the following readings in feet from a setup near A: on A, 2.071; on B, 8.254, 8.259 and 8.257. At the setup near B: on B, 9.112; on A, 2.926, 2.930 and 2.927. The elevation of B is 1099.600. Compute the disclosure and ele..
A condenser is maintained at 60?C by cooling it with atmospheric air coming in at 20?C and leaving at 35?C. The condenser must reject 25 MW from the water to the air. Find the flow rate of air and the second-law efficiency of the heat exchanger.
The joints all lie on radial lines subtending angles of 15° as indicated, and the curved members act as two-force members. Distance R.
What is the normal depth in a 4-foot wide rectangular channel that conveys a discharge of 100 CFS and has a bed slope of 2% with a Manning's roughness coefficient of 0.025
A welded connection is in equilibrium under the action of thefour forces shown. Knowing that Fa=8kn and Fb= 16kN, determine the magnitudes of the other forces.
Compression and heat transfer bring carbon dioxide in a piston/cylinder from 1400 kPa, 20?C to saturated vapor in an isothermal process. Find the specific heat transfer and the specific work.
a horizontal curve was designed for a four-lane highway for adequate ssd. lane widths are 12 feet and the
An airplane with a weight of 10,000lb/f is flying at 600ft/s at36,000ft., where the airplane pressure is 3.3 p.s.i.a. and thetemperature is -67 degrees F. The lift coefficient is 0.2. The spanof the wing is 54 ft. Calculate the wing area and minimum ..
at a railroad crossing, an overpass must be built centered over the tracks at a height of 24ft and be 200ft long. the existing highway has a design speed of 50mi/hr.
Water is pumped 9 mi from a reservoir at elevation 100 ft to a second reservoir at elevation 210 ft. The pipeline connecting the reservoirs has a 54-in diameter. It is concrete and has an absolute roughness of 0.003. If the flow is 25 mgd and pumping..
over the range of cylindrical parts manufactured on a computer-controlled lathe, the standard deviation of the diameters is 0.002 millimeter/ (a) what does Chebyshe's theorem tell us about the probability
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