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A 6m thick layer of sand overlies a 8m thick clay layer, below which is an impermeable stratum. The water table is at ground surface. For both layers assume unit weight as 20 KN/m3. For the clay, relationship between void ratio and effective stress (units KN/m3) can be expressed as:
e=0.920-0.42log(σ'/100)
A point load from a pier applies at ground surface which its magnitude is 1000KN. Calculate primary consolidation settlement of the clay layer at a distance of one meter from the point of application of the load.
Three reservoirs are connected by three pipes with hA = 100 f t, hB = 20 f t, hC = 0 f t, l1 = 1000 f t, l2 = 500 f t, l3 = 400 f t and D1 = D2 = D3 = 1 f t. Determine flow rate into or out of each reservoir if friction in each pipe is 0.02.
A dam located in a channel of rectangular cross-section which carries water flowing at a rate of 8.75m3/s. The depth of water upstream of the dam is 2.5m. the channel is 5m wide,
10 kPa of pressure required to push a 3 in^2 piston 5 mm into the compacted soil. Compute the CBR (%) if the same 3 in^2 piston required 100 kPa to penetrate 5 mm in calibrated rock soil.
what is a dummy activity and slack activity and also what are slack variables in linear programming constraints equation
Oil flows through the Trans-Alaska pipeline. Because oil is viscous, you might think that the flow is laminar. (a) What is the minimum flowrate (m3/s) for which the flow would likely be laminar.
determin the force in memebers de, hg and he of the trees and state if the members are in comperhemsion
An airport corridor is 30 ft wide. given a peak demand of 300 pedestrians per minute and an average walk speed of 3 ft/s, estimate the LOS at the corridor
What is the dry unit weight, the saturated unit weight, and the buoyant unit weight, of a soil having a ratio of 0.5 and a value of Gs of 2.7
design a concrete (n = 0.013) channel that will convey 50,000 GPM. It is to be a trapezoidal in cross section with a bottom width of 7.5 feet. The side slopes are to be 1.33:1 (H:V) and it is desired to have the depth of flow constant at 2.0 feet.
The upstream invert is at an elevation of 8ft and the downstream invert 4 ft. If the depth at the upstream end of the culvert is 8 ft, what is the flow through the culvert. Assume the culvert is in inlet control.
Four pumps are to be used in 0.5-m diameter wells at the four corners of the site. Determine the required pumping rate. The aquifer has T = 1600 m^2/day and the wells each have a radius of influence of 600 m.
a silty material is to be used to fill an earth damn. How much water must be added to bring the water content of each ton (2000 lb) of the material to 35% if the original watter content is 11.4%
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