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Design a reinforced concrete wall footing for (a) a 10-in. reinforced concrete wall and (b) a 12-in. masonry wall. The intensity of service linear dead load is WD = 20,000 lb/ft and a service linear live load WL = 12,000 lb/ft of wall length. Assume an evenly distributed soil bearing pressure and that the average soil bearing pressure at the base of the footing is 3 tons/ft2. The frost line is assumed to be 2 ft below grade. Given:
average weight of soil and footing above base = 130 pcf
footing f'c = 3000 psi
column f'c = 4000 psi
fy = 60,000 psi
surcharge = 120 psf
What is the risk of constructing a harbor which will be unprotected from wave attack during its construction.
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.
An increment of vertical stress of150kpa compress the sample to a void ratio of1.43. What is the over consolidation ratio of the soil at the unloaded condition.
Route a trianglular hydrograph through a 100 foot wide rectangular channel with a bed slope of 0.015 and a Mannings n of 0.035. Tak a distance between cross-sections of 3000 ft.
What are the expressions for the shear, V, and the bending moment, M, within the beam between points C and D in terms of Ay, M1, l, w, and x, the distance to the sectional cut from the beam's left end
The road is in good condition and is initially dry, but it becomes wet 160 ft before the stalled car (and stays wet until the car is reached). What is the minimum distance from the stalled car at which the driver could apply the brakes and still s..
A coal-fired power plant produces a net electrical output of 500 MW. The composition of the coal burned is C= 72 %, H= 6 %, S= 3.5 %, O= 6 %, N= 1 %, and ash= 12 % by weight. It's heating value (HV) is 30200 kJ/kg. The net thermal efficiency is 36..
If the temperature of rod CF is increased by 10 degrees C and that of rod BC is decreassed by 40 degrees C, determine the normal stress in rod AD. The rods are two meters long.
If the fracture were planar in shape, having an average opening of 2 mm, what would the new value of Hc be?
Estimate the inside diameter, wall thicknes and outside diameter of the pipe. The carbon steel pipe has tensile yield strength of 250 MPa. Assume safety factore of 2 and a corrosion allowance of 2mm. The maximumoperating pressure (MOP) is 55 bar.
A hemispherical bowl of radius r connected to a U-tube of constant radius r. Initially the the bowl is empty and the air/manometer liquid interface in both legs is at the level of the bottom of the bowl.
In 2003 at Holloman Air Force Base in New Mexico, test engineers set a world record by moving 192 lb payload at 6,453 miles per hour in a rocket sled. The rocket sled track, built in 1954, is 15.44 km in length.
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