Worksheet provided by your instructor to document your answers. 1. A weight of 20,000 lb. is supported on a rectangular base plate that is 8 in. wide
and 3 ft long. The base plate rests on a concrete slab. Determine the stress that the
base plate exerts on the concrete slab. Express your answer in units of (a) lb/in.2
and (b) lb/ft? (precision of 1 for (a) and of 1000 for (b))
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Principles Of Engineering Activity 2.3.1 Stress/Strain Calculations - Page 3

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)?