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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.
The acceleration of a particle is defined by the relation a=-8m/s^2. Knowing that x=20m when t=4s and that x=4m when v=16m/s, determine (a) the time when the velocity is zero
Determine the axial and hoop stresses at the lower end of the vessel. A standpipe 12 ft in diameter and 50 ft tall is being con- structed for use as a storage tank for water with a specific weight of 62.4 lb/ft3. The wall thickness of the vessel is..
Using the USLE, estimate the annual erosion from a 100 ha. forested watershed assuming the following: R =112 tonnes/ha/year. The forest is in fair condition with 40% cover; Average slope is 3%; The soils are clay loam in hydrologic group C.
Soil material is being assessed as a possible liner for a sanitary landfill. A soil core was collected and brought to the laboratory. A 10-cm tall section of soil has 2 cm of water continuously ponded on it. The area of the core surface is 78 cm^2..
(a) Compare the crystalline state in metals and polymers. (b) Compare the noncrystalline state as it applies to polymers and ceramic glasses
Why is the ‘time value of money' important for the evaluation of engineering projects? Provide at least one practical example to support your view (max 2 pages).
suppose a steel material of specific gravity of 7.8 is attached to a wood of specific gravity 0.8. if it is required that the material does not sink or rise when left in static water, what should be the proportion of the volume of the steel to tha..
two uniform rectangular plates weighing 800 llb ar freely hinged about their commonn edge and suspended by central cable ad for symmetrical corner cables. calcuate tension T in each of the corner cables and the tension To in the center
A simple beam has a 24 foot span and a W16 X 50 section. Determine the maximum flexural stress due to two concentrated loads, both 20 kips, at the 1/3 point and the 2/3 point (8 feet and 16 feet) on the beam.
The electric pole and the stub pole are at the edges of the roadway right-of-way. The anchor will be outside of the right-of-way and will require the subdivision to purchase land from the neighbouring farmer (who is VERY UNHAPPY about the subdivis..
A pig farmer owns a 20-arce farm and started business with 22.1 pigs. After one year, he has 319 pigs. Assuming a constant growth rate, what is the doubling time in units of days.
A permeation membrane separates an inlet air stream (79 mol% N2, 21 mol% O2) into a permeate stream and a reject stream. The inlet stream conditions are 293K, 0.5 MPa and 2 mol/min; the conditions for both outlet streams are 293 K and 0.1 MPa.
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