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The pavement is on a base which has a modulus of subgrade reaction of 250 pci. A 17,000 lb corner load is applied (al is 7 inches). Using the revised Westergaard equations, find the modulus of elast
A tire carries a 5,000-lb load and has a pressure of 100 psi. The pavement has a modulus of elasticity of 43,500 psi. A deflection of 0.016 inches is observed at a point on the pavement surface 0.8
The beam ABC of length L has two different moments of inertia (2I in AB, I in BC) and a constant elastic modulus E. It is fixed at point A has a roller support at point B and a load P at C. a. Sketc
A light rail route has 2 terminals and 4 intermediate stations. The demand (passengers/hr) for morning peak hour is: North Terminal Station 1 Station 2 Station 3 Station 4 South Terminal
Discharge from an orifice of 75mm diameter is 0.02 m^3/s under a constant head of 3 m. An external mouthpiece of the same diameter is installed that raises the coefficient of contraction from 0.63 t
On a very hot day, I saw a 1.6 meter long steel bar held between two rigid supports that had buckled due to the heat. The bar had a cross section of 10 mm by 40 mm, and I assume was A36 steel.
The 5-m long cantilever beam using a W410 x 67 standard wide flange section has a distributed load of 1200 N/m placed on it. It is also supported by a cable at B, of length 2 m with a 7 mm2 cross se
A permeameter with a cross-sectional area of 400 cm2 contains 3 soils in 50 cm thick layers. A total head difference of 2.0 metres results in a flow rate of 100 cm3/s. The head loss through the top
Using 1630.56 kN as the ultimate capacity determine the diameter of a drilled shaft pile that would have the same ultimate capacity and depth embedment (11.5 m) using the FHWA method. Neglect shaft
The following data are obtained for a particular reach of the Provo river in Utah: cross sectional area A = 183 ft2, free surface width = 55 ft, average depth = 3.3 ft, Rh = 3.32 ft, V = 6.56 ft/s,
A 1.5 m diameter culver (concrete barrel, well - rounded entrance) that is 20m long is installed on a slope of 2 percent. The design discharge is 9.5 m^3/sec and the inlet will be submerged but not
For a total floor load of 75 psf on 2x floor framing at 24 o.c., determine an appropriate plywood thickness and span rating assuming panels with edge support and panels oriented perpendicular to the
A biological reactor is used to treat wastewater from a small community (Q = 100,000 gpd). The influent BOD5 concentration to the reactor is 200 mg/L and the required effluent BOD5 concentration is
A non-reactive chloride solution is continuously discharged into an aquifer. The concentration at the discharge location is 800 mg/L. Determine the maximum concentration of chlorides to be observed a
A 4.00-cm-diameter, 0.80-m long rod of aluminum 7075-T6 is subjected to an axial tensile force with a factor of safety of 1.75. The yield stress and modulus of elasticity of aluminum 7075-T6 are 500
You have been assigned to design a heat exchanger to cool a gaseous process stream in a chemical plant. The stream flow at 20 kg/s and enters at 431 oK, It has a heat capacity of 3.45 J/g-oC , and n
The design discharge is 9.5 m^3/sec and the inlet will be submerged but not the outlet. Determine the depth that will result upstream (above the invert) during the design flood event.
A spillway carries a discharge of 22.5 m^3/sec with the outlet velocity of 15 m/sec at a depth of 0.2m. Select an adequate USBR stilling basin and determine the sequent depth, the length of the hyd
The siphon crown is 1.2m above the water surface elevation of the reservoir and a length of 10m away from the siphon entrance. If the siphon diameter is 30 cm, the friction factor is 0.2, and the he
Person spining has his arms outward. The moment of inertia is 52kg*m^2 and ang. speed 3.80 revolutions/ second. if the persons arms are down. moment of inertia goes to 35kg*m^2. find the new angular
A simply supported steel 'I beam' is made of three 1"*8" plates with a mass of 898.4 lbmass each as shown in I beam form. Steel has a modulus of elasticity of 30*10^6 psi. The beam is allowed to def
Ammonia is a gas whose smell we detect in manure, cleaning products, and other things. The concentration of this noxious gas can be controlled by regulating the pH of the water because only the non-
A 40 oF breeze of 10 miles per hour blows over the top of a round open-top water cooling tank which has a bulk temperature of 100 oF. What is the rate of energy in kW that enters into the air What t
Determine the air pressure at the top of a 300 m high building by assuming the density of air stays constant at the z = 0 value. Now compute the pressure assuming the density of the air varies. Is t
of 2640 psi with a factor of safety of 2.0 with respect to yielding. the yield stress of the steel is 65,000 psi in tension and 32,000 psi in shear. the diameter of the tank is 7.0 in. the minimum r