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Three parallel line loads of 500kN/m are applied at ground level in a straight line 4.0m apart. Determine the increase in vertical stress at 2.0m below ground level beneath the middle load. Assume that the soil satisfies Boussinesq's assumptions.
(a) Determine the desired diameter of the disk. (b) If the rubber strain is not to exceed 0.2 in/in, determine the maximum allowable compressive force. Recall that the spring constant, k=Fx,or in terms of an axially loaded member
Springs AB and CD have a stiffness of k = 300 N/m and k' = 200 N/m, respectively, and both springs have an unstretched length of 600 mm. If the 2-kg smooth collar starts from rest when the springs are unstretched
A fire has destroyed thousands of acres of forest. Seedlings have been planted in the area but are being destroyed by the local wildlife. Develop a way to reforest the region by preventing the wildlife from eating the seedlings
Determine the diameter of commercial steel pipe required to convey a minimum of 300 cfs of water at 60 deg F with a head loss of 1.2 ft per 1000 ft of pipe. Assume pipes are available in the following nominal diameters (inches)
The basic barometer can be used to measure the height of abuilding. If the barometric readings at the top and at the bottomof a building are 28.7 and 29.7 in Hg, respectively, determine the height of the building in feet.
We are analysing energy efficiency of four different cars, A (3.2 miles/kwh), B (42 mpg using Clean Diesel), C (22 mpg using corn based ethanol E85), and D (28 mpg using regular gasoline). Now accounting for all of the energy used, including extra..
A toxic compound being is removed from solution in a CSTR at Steady State according to a first order reaction rate. The upstream concentration of the pollutant is 14 mg/L and the downstream concentration is 1.7 mg/L.
Consider tetrachloroethene (PCE) in water. The vapor pressure of PCE is 0.0251atm. Henry's constant for PCE at 25°C is 26.9 atm-L/mol. Estimate the aqueous concentration of PCE in water at equilibrium
how do the crack behaves under the compression of a concrete cubes under friction between the plates and specimen with stress strain diagram?
Each week a hen can either lay 12 eggs or hatch 4 eggs, but not both. At the end of the four-week period all eggs and chicks will be sold: an egg will bring 10 cents, and a chick will bring 60 cents.
Consider two alternative water resource projects, A and B. Project A will cost $2,533,000 and will return $1,000,000 at the end of 5 years and $4,000,000 at the end of 10 years.
A cable is made of two strands of different materials, A and B, and cross sections as follows: For material A, K = 60, 000 psi, n = 0.6, Ao = 0.6 in2 For material B, K = 30, 000 psi, n = 0.5, Ao = 0.3 in2
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