The following are the results of a sieve analysis: U. S. Sieve No Mass of soil retained (g)
1/2 in
4 0
10 48
20 56
40 85
60 51
80 106
10 092
20 087
Pan 35
A. Determine the percent finer than each sieve and plot a grain-size distribution curve
Develop a spreadsheet for the computations and plotting required for problems and make sure to turn on "minor gridlines" for the grain size axis. Please present the grain size distribution in semi-log scale.
B. Determine D10, D30, and D60 from the grain-size distribution curve.
C. Calculate the uniformity coefficient, Cu.
D. Calculate the coefficient of graduation, Cc.

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false

When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?