Determine the primary consolidation settlement of the pile group.


A 15-m-long closed-end steel pipe pile group is driven into a homoge-

neous clay. The pile cap is square, and the nine piles are evenly spaced.

The layout of the pile group is shown in Figure 4.25. The pile group

is subjected to a vertical load of 5200 kN. The soil has a unit weight

of 18.5 kN∕m³, cohesion of 100 kN∕m², friction angle of 10 degrees.

The clay layer is 100 m deep, and beneath the clay layer is dense sand.

The groundwater table is at the ground surface. Preliminary laboratory

testing found that the clay’s void ratio is 0.45, compression index is

0.3, swell index is 0.08, and the clay is overconsolidated. The precon-

solidation pressure is 200 kN∕m². Determine the primary consolidation

settlement of the pile group.

find the cost of your paper

Explain why attenuation is not a big problem in PET.

Consider a 2-D object consisting of two triangle compartments, as shown in Figure P9.4. Suppose a solution containing a 511 KeV gamma ray emitting radionuclide with concentration f = 0.5….

Give the mean and the variance of the reconstructed image, mean[ˆ f(x, y)] and var[ˆ f(x, y)].

Ignoring the inverse square law and attenuation, an approximate reconstruction for SPECT imaging is given by where c˜() =  {||W()} and W() is a rectangular windowing filter that cuts off at = 0…..

Find the numerical responses in each to an event in crystal C(4, 6).

Suppose a PET detector comprises four square PMTs (arranged as a 2 by 2 matrix) and a single BGO crystal with slits made in such a way that it is….