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A 3m deep layer of clay is underlain by impervious rock. An extensive area of fill is to be placed over the site.How long would it take for the clay layer to achieve 90% of its total final settlement?
Note: that a 20mm high sample of clay achieved 50% of its total final settlement in a standard oedometer test in 4.2 min.
An 8.5 m compacted fill is to be placed over the soil profile. Consolidation tests on samples from points A and B produced the following results. a) Calculate the consolidation settlement caused by the weight of this fill.
At normal atmospheric conditions, approximately what pressure in psi must be applied to water 70 F to reduce its volume by 2 %
The 2 Mg car is being towed by a winch. If the winch exerts a force of T=105s on the cable, where 14m is the displacement of the car in meters, determine the speed of the car when s , starting from rest. Neglect rolling resistance of the car.
A contaminant in water is traveling through a saturated clay layer under a hydraulic gradient of 0.15. The clay has a hydraulic conductivity of 2 x 10^(-7) cm/s, a moisture content of 19%, and a Gs of 2.65.
A 3-mm thick panel (1 m x 1 m) of aluminum alloy (k = 177 W/m. K, Cp = 875 J/kg. K, and p(rho)= 2770 kg/m3) is heated in a large oven with air at T = 175oC and a convective heat transfer coefficient of h = 40 W/m2.K.
A pool of benzene is ignited on the floor of a large industrial building. The total area covered by the Kerosene pool is 6 meters square (Note that this is considered a large pool D>0.2 meters). Combustion efficiency is 70%. Estimate the plume mas..
a component in a packaging machine is subjected to a tensile load of 36.6 KN which will be repeated several times over the life of the machine. The cross-section of the component is 12 mm thick and 20 mm wide.
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.
The 3.5-Mg engine is suspended from a spreader beam having a negligible mass and is hoisted by a crane which exerts a force of 40 kN on the hoisting cable. Determine the distance the engine is hoisted in 2.4 s, starting from rest.
You are designing a highway to AASHTO guidelines on a rolling terrain where the design speed will be 60 mi/h. at one section, a +1.0% grade and a -3.0% grade must be connected with an equal-tangent vertical curve.
If the allowable shear stress in the 7/8" diameter bolt is 35 ksi, determine the allowable force F that may be applied.
Find out the number of turns in each spring, if the diameter of the spring wire 14 mm and the diameter of coil is 80 mm. Assume C=84 GN/mmxmm.
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